Re: [Emc-users] New installation but no pulse output
On Sat, 2009-06-13 at 06:32 +0100, Sondergerätebau wrote: > Dear List. > > I have build yesterdat a new installation of EMC2 > on my PC, but I am failing to see any pulses > on my DM25 port with my oscilloscope ? > > Is their a logical procedure to test for logic pulses > on EMC2 ? > > Many thanks kind regards > > Al: Hello Al. Please post which configuration files you are using, or post the files to pastebin or provide some other link. I assume you installed EMC2 from the LiveCD? You can check for signals with halscope: http://www.linuxcnc.org/docview/html//hal_tutorial.html#sec:Tutorial% 20-%20Halscope (Short URL) http://preview.alturl.com/egbg http://www.linuxcnc.org/docs/html/common_Getting_EMC.html -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] New installation but no pulse output
Dear List. I have build yesterdat a new installation of EMC2 on my PC, but I am failing to see any pulses on my DM25 port with my oscilloscope ? Is their a logical procedure to test for logic pulses on EMC2 ? Many thanks kind regards Al: -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] .ngc file RFReview
In case anyone is interested, I have an .ngc file that I'll probably run tomorrow, but if anyone finds anything that might improve it, I would appreciate hearing from you. Thanks. http://wallacecompany.com/machine_shop/EMC2/ngc/encoder-100ppr-4c.ngc -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metric? and aviation
Aviation uses buttlines, stationlines, waterlines, lofting and the XYZ zero is a distance in front of the plane. On Fri, Jun 12, 2009 at 4:09 PM, wrote: >> 2009/6/12 Douglas Pollard : >> >>> But what difference does base 10 make to a guy running a cnc machine?? > > > The aviation industry stepped around the imperial system of linear > measurement by ONLY using inches and decimal portions of them. > Stations and waterlines! > > Don't civil engineers use a "foot" of ten "inches" in the US ? Perhaps > not any more> > > Cal > > > -- > Crystal Reports - New Free Runtime and 30 Day Trial > Check out the new simplified licensing option that enables unlimited > royalty-free distribution of the report engine for externally facing > server and web deployment. > http://p.sf.net/sfu/businessobjects > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > -- you can lead a person to knowledge but you cannot make him think -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Stopping Bad O
On Fri, 2009-06-12 at 20:57 -0500, Jon Elson wrote: > Kirk Wallace wrote: > > Not that I would do anything as silly as setup a O while loop without > > incrementing the conditional counter, then putting EMC2 into an endless > > loop on loading the file, but how would one stop EMC2, other than using > > the X (window close) button? > > > the ESC key is "program abort". It "should" work even with an infinite > loop, but might > not if there are no moves being executed. > > Jon It's during the program load the problem occurs. I think while AXIS is munching on the back plot. I just tried ESC and that seems to work. Thanks. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] EMC2 Drip Feed
On Fri, 2009-06-12 at 21:15 -0500, Chris Radek wrote: > On Fri, Jun 12, 2009 at 03:06:56PM -0700, Kirk Wallace wrote: > > I'm not sure how handy it would be, but can EMC2 be "drip fed" (DNC) > > from a physical port, a file, spreadsheet or other? This may be obvious, > > but I'm drawing a blank. > > Nope. > > Drip feeding was done on controls with limited program memory. There > is no need for it in EMC2. > > Also, it can't work, because our gcode does not necessarily execute > linearly. Thanks Chris, Jon. This is more of a theoretical question to see what options there are for loading or editing g-code into AXIS or EMC2. For instance, I have been using a spread sheet to help develop g-code. I thought it would be nice to write the full code in the spread sheet and see the back plot in AXIS. If you change something in the spread sheet you can see the change in the back plot. Knowing what AXIS/EMC2 input options there are, would help me to know how close to this goal, I might be able to get. Right now, I have to block copy/paste, and file copy across three or four applications to get a similar outcome. Giving this more thought, I could see the spread sheet dynamically linked to the g-code file, with AXIS monitoring the file and automatically doing a file reload when it sees a change. Of course I don't expect this to happen while EMC2 is running a program. If an update were detected during a program run, a dialog could pop up to give the operator a chance to stop the program or just ignore the warning. I suppose a true drip feed might have some sort of legacy hardware value. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Need to Control 6 Axis Hexapod with 2 Additional Coordinated Axes. All Stepper
Rob Antonides wrote: > Hi, > > I would like to use one of Mesa's FPGA cards to drive 8 stepper axes. I > would ideally use 4 of their 7I32 stepper driver cards to drive all 8 > steppers. This is for a 6 axis hexapod with a rotary axis on top and > another stepper for extrusion. > > >From what I understand EMC2 only supports EPP or PCI. I also need at least > 4 50 pin headers to connect to the stepper daughter cards. > > This leaves me with the 5I22. > > Is the 7I60 also an option? I don't think so because it only has serial > ports. The 7I60 is a nice solution for me, because eventually I would like > this to be a standalone controller with the motion control program right on > the FPGA. Is the Xilinx WebPack easy to program with? Does someone have > experience with this? > FPGA programming is quite different from traditional computer languages. In nearly all computer languages, one small step is performed on each line of code. With FPGAs, in many cases, EVERY line of code is executed on every clock cycle of the FPGA. This makes them very powerful, but there are also many conditions that you have to be very careful with, or you will have a BIG mess. I have made a ramping one-axis positioning controller with an FPGA, and after resolving some dumb errors and faulty assumptions on my part, I did get it working. If you want complex arbitrary motion of a hexapod all in an FPGA, I think you are asking for big trouble. The only sane way to do that is with a very large FPGA with a power PC core on it, and run Linux on that CPU. Be comfortably seated when pricing one of these larger Virtex parts! Preferably, have someone standing by with smelling salts. Suddenly, a PC sounds like a very reasonable solution. Anyway, if you are not skilled in digital logic design, you will find the transition to VHDL or Verilog has MANY pitfalls that you had no idea existed. Also, you can't just put in a print statement to find out what is going on in an FPGA - you need at least a digital storage oscilloscope and most likely a logic analyzer. Two of my universal stepper controllers and your choice of Gecko stepper drives would also work, but at greater cost than the Mesa products. Jon -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] emc.nbl
Dave Engvall wrote: > Good Grief this is a young group. ;-) > > Happy Birthday Stuart! > Yeah, you always have to top us! Jon -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Stopping Bad O
Kirk Wallace wrote: > Not that I would do anything as silly as setup a O while loop without > incrementing the conditional counter, then putting EMC2 into an endless > loop on loading the file, but how would one stop EMC2, other than using > the X (window close) button? > the ESC key is "program abort". It "should" work even with an infinite loop, but might not if there are no moves being executed. Jon -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] EMC2 Drip Feed
Kirk Wallace wrote: > I'm not sure how handy it would be, but can EMC2 be "drip fed" (DNC) > from a physical port, a file, spreadsheet or other? This may be obvious, > but I'm drawing a blank. > Why, on EARTH, would you want to do this? Drip feed was used on systems with severely limited buffer memory, like early tape NC systems with BTR units, and BOSS and Bandit controls with a couple K bytes of memory. Since most EMC2 systems have a hard drive of a couple GBytes today, I don't see the point. EMC2 today reads the G-code from a "file", so that is already done. The other methods seem prone to problems, like the communication stopping before the part is completed, or whatever. Jon -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successive G0 moves
K.J. Kirwan wrote: > Hi all, > > Wait, are you sure this is a bug? > > I don't know how the motion controller works in EMC2 as > far as its "in-position" system. I don't see any .ini > parameters listed to set "in-position" tolerances. > (Q: What *are* EMC2's in-position tolerance settings, > and how are they adjusted if not in the .ini file?) > > It is not in the .ini file because there is no "in position" tolerance. There is a following error tolerance, but that causes a program abort. EMC does not wait for an axis to be "in position" before continuing. > But in the case of allowable following error, if the > machine is moving with sufficient velocity, the allowable > following error should ramp up from the low end > MIN_FERROR= (Integrator manual shows as .010" default) > to as high as > FERROR= (Integrator manual shows as 1.0" default) > (See Integrator Manual, Chapter 7.2.9, page 34) > It DOES have asliding scale for following error. > Could something like this be happening (normally) > with the "in-position" tolerance values? If the > machine has ramped up to max speed, and the next > line does not slow things down (even if direction > changes), then maybe "in-position" is reached as > much as an inch "early" and the next motion (quite > properly) begins? > EMC2 computes how far before the end of a move it needs to decelerate based on velocity and the max_acceleration parameter for that axis in the .ini file. As soon as the currently moving axis begins its deceleration, the next axis to move will begin to accelerate when in G64 mode. In G61, that is defeated, and the move must be completed before the next move starts. Jon -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] EMC2 Drip Feed
On Fri, Jun 12, 2009 at 03:06:56PM -0700, Kirk Wallace wrote: > I'm not sure how handy it would be, but can EMC2 be "drip fed" (DNC) > from a physical port, a file, spreadsheet or other? This may be obvious, > but I'm drawing a blank. Nope. Drip feeding was done on controls with limited program memory. There is no need for it in EMC2. Also, it can't work, because our gcode does not necessarily execute linearly. -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successive G0 moves
On Fri, Jun 12, 2009 at 11:37:22AM -0400, Eric H. Johnson wrote: > > my real question is, should one be able to trust that one > G0 command will complete before a subsequent G0 command starts? EMC has always blended G0 moves. Program a square path of four rapids, run it, and look at the backplot. You will see rounded corners. With long moves on a machine with low acceleration and with no path tolerance specified, you can get a fairly round corner. I think this is the behavior you're describing but I'm not entirely sure. You do have full control over this behavior though: To specify a path following tolerance, program G64 P--- To specify exact stop mode so each move goes exactly to the programmed endpoint, program G61. Chris -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successive G0 moves
Rainer Schmidt wrote: > On Fri, Jun 12, 2009 at 6:24 PM, Shabbir Hussain wrote: > >> G0 should not be used for cutting. It is only for positioning when the tool >> is at safe Z height (out of workpiece and clamps etc.). I have worked with >> Fanuc and Siemens controllers. In these controllers when G0 move is >> programmed, all the axis used in G0 move starts moving at rapid feeds (set >> in the parameters of the controller) and the axis that achieve the position >> just stops and others continue to run. So G0 move produces a non-linear >> move. This is normal behaviour. >> >> So G0 move should finally achieve the target position not the linear path. >> That is why it must be used for positioning. >> >> Thanks >> >> Shabbir Hussain >> > > Would > G0Z10 > G0X5Y8 > Posiiton Z first and then x and y? I did not spend to much thought > about this and find this thread potentially disaster avoiding... > It SHOULD move Z to close to coord. 10 before the X-Y move starts. If you have left the system in G64 mode, then it will begin the XY move as soon as the Z axis begins to slow down at the end of the move. This is the currently defined behavior. The point on Z where this happens depends on the acceleration defined in the ini file for the Z axis. If you do a G61 first, then it will complete the Z move before the XY starts. Jon -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] [OT]Re: Metricks - Mill-Drill needs steppers and servos?
On Fri, 2009-06-12 at 19:33 -0400, Douglas Pollard wrote:
> No depth dimension was ever put on a tap drilled hole because you
> had likely ground a new lead on your tap when it was needed. The
> engineer didn't know how long the lead was so it was up to the machinist.
> The only notation on the tap drilled hole other than location might
> be "drill through or through drill". A tolerance was given on bolt hole
> location but no hole size, the machinist knew what size hole and counter
> bore based on location tolerance.
> In my opinion this was a huge complement and show of respect for the
> ability and knowledge of journeyman machinists.
I started out as a draftsman and my understanding is that drawings were
made for the purpose of describing the shape and material requirements
of parts and assemblies, not to tell machinists how to do their jobs,
but to communicate and record necessary information to allow all
concerned parties make acceptable parts. Many times I put something on a
drawing that the machinists or others didn't like, but were there for a
reason other than making life easier. On the other hand sometimes
drafters make mistakes, get lazy or engineers think they can be
drafters, and make poor documents. Since the drawing is the foundation
of a successful part or assembly, a good drafter would expect anyone
that finds a mistake or flaw in a drawing, that this issue should be
made known to the drafter, before further work is done. I know this
isn't how the real world works, but if I were King of the World...
Since I have some stiff competition,
"
(\__/)
(='.'=) This is Bunny. Copy and paste bunny into your
(")_(") signature to help him gain world domination.
"
I guess the world is safe for now.
--
Kirk Wallace
http://www.wallacecompany.com/machine_shop/
http://www.wallacecompany.com/E45/index.html
California, USA
--
Crystal Reports - New Free Runtime and 30 Day Trial
Check out the new simplified licensing option that enables unlimited
royalty-free distribution of the report engine for externally facing
server and web deployment.
http://p.sf.net/sfu/businessobjects
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Emc-users mailing list
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Re: [Emc-users] emc.nbl
On Fri, 2009-06-12 at 08:10 -0500, Stuart Stevenson wrote: > Gentlemen, >Sorry about the dsyelixc command line. :) I think it is the result > of old age. Today is the marking of another year. Wish me happy > birthday. I am 56 today. > thanks > Stuart Happy Birthday, Stuart, John K. and Alex and anyone else that needs one. I am certainly glad that you guys have been around. (Group hug!) Okay, now back to work. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successive G0 moves
Hi all, Wait, are you sure this is a bug? I don't know how the motion controller works in EMC2 as far as its "in-position" system. I don't see any .ini parameters listed to set "in-position" tolerances. (Q: What *are* EMC2's in-position tolerance settings, and how are they adjusted if not in the .ini file?) But in the case of allowable following error, if the machine is moving with sufficient velocity, the allowable following error should ramp up from the low end MIN_FERROR= (Integrator manual shows as .010" default) to as high as FERROR= (Integrator manual shows as 1.0" default) (See Integrator Manual, Chapter 7.2.9, page 34) Could something like this be happening (normally) with the "in-position" tolerance values? If the machine has ramped up to max speed, and the next line does not slow things down (even if direction changes), then maybe "in-position" is reached as much as an inch "early" and the next motion (quite properly) begins? Someone who knows more about the inner workings of the motion controller (motion planner?) will have to answer this, I don't know. Just something to check. Experiments could be done to insert very small, very slow feeds in between the rapids, to see what effect that has on the motion planner's in-positions and early starts. (Without using any of the special "in-position" G codes, I mean.) Hope this helps. Thanks, Kim Eric H. Johnson wrote: > Hi all, > > It is my understanding that a rapid move (G0) should fully complete before a > subsequent motion command will start. In this case I am doing two successive > G0 moves, where in very rare occasions, the second G0 move will start to > move before the first entirely completes. > > For example: > G0 X20 Y15 > G0 Z0.1 > > In very rare instances, the second G0 move will start (based on the example > above) about 1" or so before the first G0 command has completed. But it > isn't as simple as that, it seems to depend on both a long G0 move followed > by a short G0 move followed by a number of short G1 moves (typically a > series of short G1 moves approximating an arc). At least that is the closest > thing to a pattern as I have been able to surmise based on the very few > instances in which it occurs. It is repeatable, however. > > I have found a couple of work arounds by adjusting the g-code generated > (HPGL -> G-Code), my real question is, should one be able to trust that one > G0 command will complete before a subsequent G0 command starts? > > Thanks, > Eric > > > > -- > Crystal Reports - New Free Runtime and 30 Day Trial > Check out the new simplified licensing option that enables unlimited > royalty-free distribution of the report engine for externally facing > server and web deployment. > http://p.sf.net/sfu/businessobjects > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Paraport output
I have an older Graphtec Flat bed pen plotter that has it's own "language" to accomplish many graphics tasks. Is it possible to use EMC and it's port connection to send simple text commands to this unit? Seems like a simple 2 1/2 D application not G code however. HP-GL is an option, though the software "conversion" is a bit convoluted. Serial interface is just a few dip switches and a cable away, but to use EMC seems an attractive. Is talking to the parallel port so difficult? Ideas for a Linux struggler? Cal -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successive G0 moves
On Jun 12, 2009, at Jun 12, 2009--3:39 PM, emc-users- requ...@lists.sourceforge.net wrote: > > From: Rainer Schmidt > Date: Friday2009June 12 Friday2009June 123:37:02 PM PDT > To: "Enhanced Machine Controller (EMC)" us...@lists.sourceforge.net> > Subject: Re: [Emc-users] Successive G0 moves > Reply-To: "Enhanced Machine Controller \(EMC\)" us...@lists.sourceforge.net> > > > On Fri, Jun 12, 2009 at 6:24 PM, Shabbir > Hussain wrote: >> >> G0 should not be used for cutting. It is only for positioning when >> the tool is at safe Z height (out of workpiece and clamps etc.). I >> have worked with Fanuc and Siemens controllers. In these >> controllers when G0 move is programmed, all the axis used in G0 >> move starts moving at rapid feeds (set in the parameters of the >> controller) and the axis that achieve the position just stops and >> others continue to run. So G0 move produces a non-linear move. >> This is normal behaviour. >> >> So G0 move should finally achieve the target position not the >> linear path. That is why it must be used for positioning. >> >> Thanks >> >> Shabbir Hussain > > Would > G0Z10 > G0X5Y8 > Posiiton Z first and then x and y? I did not spend to much thought > about this and find this thread potentially disaster avoiding... > Rainer > That was exactly my point earlier. If I write: G0 Z1 X0 Y0 the program should never transform that into G0 Z1 X0 Y0 . Now I have never noticed this happening on my machine, but if it can happen under some circumstance, I would definitely consider it to be a bug. Alan --- Alan Condit 1085 Tierra Ct. Woodburn, OR 97071 Email -- acon...@ipns.com Home-Office (503) 982-0906 -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metricks - Mill-Drill needs steppers and servos?
Rainer Schmidt wrote: > On Fri, Jun 12, 2009 at 5:26 PM, Andy Pugh wrote: > >> 2009/6/12 : >> >> >>> My Favorite unit >>> > > In Germany we also use Angstrom per Millennium as Bureaucratic Unit. I > observe similar speeds in the US. There seems to be some cross > contamination in between processes. > > -- > Crystal Reports - New Free Runtime and 30 Day Trial > Check out the new simplified licensing option that enables unlimited > royalty-free distribution of the report engine for externally facing > server and web deployment. > http://p.sf.net/sfu/businessobjects > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > My favorite unit is not a unit at all. It's instructions on a drawing that used to mean something to machinist. Such as: "Machine In a workman like manner" which I think meant to make it like a machinist and not like a jack legged mechanic. Another was written on a drawing with dimensions and no tolerance but said, "Make to fit and function". God help the guy that tried to make a spare part to the drawing. Another thing often on a drawing was the bolt size length thread pitch and so on. The position of the holes to be tapped was given but know depths. The machinist was expected to now how deep they should be. A steel bolt that was to go into as steel housing was to be tapped to the diameter of the bolt. That was the correct thread length plus a little :-) This to allow the bolt to break before stripping the thread. If the housing was aluminum the machinist new the course thread was to be two times the bolt diameter. This again to allow the bolt to break. No depth dimension was ever put on a tap drilled hole because you had likely ground a new lead on your tap when it was needed. The engineer didn't know how long the lead was so it was up to the machinist. The only notation on the tap drilled hole other than location might be "drill through or through drill". A tolerance was given on bolt hole location but no hole size, the machinist knew what size hole and counter bore based on location tolerance. In my opinion this was a huge complement and show of respect for the ability and knowledge of journeyman machinists. Often you were given a shaft size and told what class fit the bore was to be without a dimension. I ran a shop with 30 machinists in it. The only time I ever told a machinist how to do a job was if someone else was to do some other operations on it and most of my guys didn't even need that help. I darn sure didn't hold back though if I didn't like the job he did or how long it took. Each of them had a couple of apprentices. When I hired a kid in the shop he served a four year apprentice ship when he finished he was a second class machinist. After six years five or six years he was first class and was expected to take on an apprentice that he hired. In nine or ten years he was a master machinist had a two machinists working for him and each of the machinists had a second class machinist and several apprentice boys. All these guys had a small gerstner toolbox which I gave them when the finished their appenticeship. the older guys almost never quite though some of the youg ones did when their apprenticeship was over.. I lot of the boys quit the first and second year. Most of these master machinist worked directly with Nassa engineers and were very respected by them. They made wind tunnel models, stings and space mock ups and some things that went into space. The made steam turbine rotors for Battleships, spare blades, babbitt bearings and some bearings for propeller shafts 26 inch bores, babbitt lined. These guys now own and run the shop. It is smaller in size but still makes them a good living. I am retired. The story about Nassa making one part metric an the other imperial was tongue in cheek. The imperial dimensioned on the part had metric bearings in it. We worked on that part and we made the arm on the first Mars Lander :-[ The one that didn't work. What they did do for a short time was to dimension in inches but they represented metric dimensions. They only did that for a short time as they slowly converted and the builders ,mechanics and machinists got used to working in metrics. Mistakes ran rampant during that period. Doug -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _
Re: [Emc-users] Successive G0 moves
Yes, G0Z10 should be executed first. Then the other move G0X5Y8 Regards, --- On Fri, 6/12/09, Rainer Schmidt wrote: > From: Rainer Schmidt > Subject: Re: [Emc-users] Successive G0 moves > To: "Enhanced Machine Controller (EMC)" > Date: Friday, June 12, 2009, 3:37 PM > On Fri, Jun 12, 2009 at 6:24 PM, > Shabbir Hussain > wrote: > > > > G0 should not be used for cutting. It is only for > positioning when the tool is at safe Z height (out of > workpiece and clamps etc.). I have worked with Fanuc and > Siemens controllers. In these controllers when G0 move is > programmed, all the axis used in G0 move starts moving at > rapid feeds (set in the parameters of the controller) and > the axis that achieve the position just stops and others > continue to run. So G0 move produces a non-linear move. This > is normal behaviour. > > > > So G0 move should finally achieve the target position > not the linear path. That is why it must be used for > positioning. > > > > Thanks > > > > Shabbir Hussain > > Would > G0Z10 > G0X5Y8 > Posiiton Z first and then x and y? I did not spend to much > thought > about this and find this thread potentially disaster > avoiding... > Rainer > > -- > Crystal Reports - New Free Runtime and 30 Day Trial > Check out the new simplified licensing option that enables > unlimited > royalty-free distribution of the report engine for > externally facing > server and web deployment. > http://p.sf.net/sfu/businessobjects > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successive G0 moves
It seems clear to me that the described behavior is a bug. You should file a bug report. Ken Rainer Schmidt wrote: > On Fri, Jun 12, 2009 at 6:24 PM, Shabbir Hussain wrote: >> G0 should not be used for cutting. It is only for positioning when the tool >> is at safe Z height (out of workpiece and clamps etc.). I have worked with >> Fanuc and Siemens controllers. In these controllers when G0 move is >> programmed, all the axis used in G0 move starts moving at rapid feeds (set >> in the parameters of the controller) and the axis that achieve the position >> just stops and others continue to run. So G0 move produces a non-linear >> move. This is normal behaviour. >> >> So G0 move should finally achieve the target position not the linear path. >> That is why it must be used for positioning. >> >> Thanks >> >> Shabbir Hussain > > Would > G0Z10 > G0X5Y8 > Posiiton Z first and then x and y? I did not spend to much thought > about this and find this thread potentially disaster avoiding... > Rainer > > -- > Crystal Reports - New Free Runtime and 30 Day Trial > Check out the new simplified licensing option that enables unlimited > royalty-free distribution of the report engine for externally facing > server and web deployment. > http://p.sf.net/sfu/businessobjects > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successive G0 moves
On Fri, Jun 12, 2009 at 6:24 PM, Shabbir Hussain wrote: > > G0 should not be used for cutting. It is only for positioning when the tool > is at safe Z height (out of workpiece and clamps etc.). I have worked with > Fanuc and Siemens controllers. In these controllers when G0 move is > programmed, all the axis used in G0 move starts moving at rapid feeds (set in > the parameters of the controller) and the axis that achieve the position just > stops and others continue to run. So G0 move produces a non-linear move. This > is normal behaviour. > > So G0 move should finally achieve the target position not the linear path. > That is why it must be used for positioning. > > Thanks > > Shabbir Hussain Would G0Z10 G0X5Y8 Posiiton Z first and then x and y? I did not spend to much thought about this and find this thread potentially disaster avoiding... Rainer -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Stopping Bad O
Not that I would do anything as silly as setup a O while loop without incrementing the conditional counter, then putting EMC2 into an endless loop on loading the file, but how would one stop EMC2, other than using the X (window close) button? -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successive G0 moves
G0 should not be used for cutting. It is only for positioning when the tool is at safe Z height (out of workpiece and clamps etc.). I have worked with Fanuc and Siemens controllers. In these controllers when G0 move is programmed, all the axis used in G0 move starts moving at rapid feeds (set in the parameters of the controller) and the axis that achieve the position just stops and others continue to run. So G0 move produces a non-linear move. This is normal behaviour. So G0 move should finally achieve the target position not the linear path. That is why it must be used for positioning. Thanks Shabbir Hussain --- On Fri, 6/12/09, Eric H. Johnson wrote: > From: Eric H. Johnson > Subject: Re: [Emc-users] Subject: Re: Successive G0 moves > To: "'Enhanced Machine Controller (EMC)'" > Date: Friday, June 12, 2009, 1:48 PM > Dave, Alan, Andy, > > Thanks for the replies. I have read all of those things > too. I would > reiterate that this is something that occurs very rarely, > but when it does > happen it is very damaging. I have two basically identical > machines which > have been running for the last 7-9 months, and this problem > has only > occurred a handful of times over that span. > > It is also easily remedied in the G-Code, but the > application is basically a > once and done type, which means I need to in some way > anticipate the > conditions under which it occurs. My current brute force > approach is to > insert an additional line of G-code between consecutive G0 > moves any time > the distance of the first G0 move exceeds some threshold. > Even though > 99.% of the time, the extra line of code is > superfluous. > > But without being able to quantify exactly when it will > occur, there is no > guarantee that my brute force fix will in fact prevent it > from occurring > under any circumstance. > > Regards, > Eric > > For rapid linear motion, program G0 X- Y- Z- A- B- C-, > where all the axis > words are optional, except that at least one must be used. > The G0 is > optional if the current motion mode is G0. This will > produce coordinated > linear motion to the destination point at the current > traverse rate (or > slower if the machine will not go that fast). It is > expected that cutting > will not take place when a G0 command is executing. > > It is an error if: > > . all axis words are omitted. > If cutter radius compensation is active, the motion will > differ from the > above; see Appendix B. If G53 is programmed on the same > line, the motion > will also differ; see Section 3.5.12. > > > > Somehow the definition and the described motion don't seem > to > match. Bug? > > > -- > Crystal Reports - New Free Runtime and 30 Day Trial > Check out the new simplified licensing option that enables > unlimited > royalty-free distribution of the report engine for > externally facing > server and web deployment. > http://p.sf.net/sfu/businessobjects > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] X2 conversion
Hi I converted my X2 to CNC a few years ago. Started with home built L297/L298 driver boards but recently changed to micro stepping controllers from Motion Control Products http://www.motioncontrolproducts.co.uk/product_info.php?cPath=26&product s_id=3. Link to the PC is via a home built break out board (BOB) but there are plenty of low cost BOBs on the net - suggest you opt for one with optical isolation between the PC and CNC system. With ball screws on all axes (0.2" pitch 5/8" dia NOOK industries) and motors wired bi-polar parallel I can rapid the axes far faster than is practical for such a small machine. I limit the maximum velocity to 20inch/min and machine at lower speeds due to spindle rpm limitations (belt drive conversion recommended) and limitation on machine rigidity. Motor power comes from a 42VDC / 16Amp home built unregulated psu with an in rush suppressor. Basically, a transformer, bridge rectifier and a large smoothing capacitor. My DRO is again home built but the DRO350 looks a quality item and will be very useful even on manual machine. Regards Andy -Original Message- From: Wayne Patterson [mailto:way...@wavelinx.net] Sent: 12 June 2009 15:05 To: Enhanced Machine Controller (EMC) Subject: [Emc-users] X2 conversion Hey Guys, I am at a point that I need to convert my Sieg X2 mill to CNC control. I have found two kits/plans online and wanted to know if anyone on the list has used them? They are the "Steele Company's" conversion kit/plan and the "FigNoggle Designs" kits/plans. For what it is worth I plan on building the parts so I will be using the plans and not the kits. Right now my biggest concern is the electronics. While I am confident in building parts for the machine, the electronics is some what daunting. I have bought three "Linistepper" driver boards and assembled them with satisfactory results. But I 'm lost when it comes to the controllers. From what I have read I am leaning to the Mesa 7I43 to connect the driver boards to the PC. I also want to add DRO using ShumaTechs DRO-350. And was wondering if that could be integrated into EMC some how. If anyone has used any of these parts and/or plans and could give me some advice it would be greatly appreciated. My funds are limited and I don't want to waste it on things that will not work or conflict with EMC. Thanks in advance for any help! lennywayne -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] EMC2 Drip Feed
I'm not sure how handy it would be, but can EMC2 be "drip fed" (DNC) from a physical port, a file, spreadsheet or other? This may be obvious, but I'm drawing a blank. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metricks - Mill-Drill needs steppers and servos?
On Fri, Jun 12, 2009 at 5:26 PM, Andy Pugh wrote: > 2009/6/12 : > >> My Favorite unit > In Germany we also use Angstrom per Millennium as Bureaucratic Unit. I observe similar speeds in the US. There seems to be some cross contamination in between processes. -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metricks - Mill-Drill needs steppers and servos?
2009/6/12 : > My Favorite unit MegaParsec Barn. One gross of them is a reasonable size beer. However it is a very, very, long and very, very, thin unit of volume. -- atp -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metricks - Mill-Drill needs steppers and servos?
On Fri, Jun 12, 2009 at 5:14 PM, wrote: >>> >>> yea, my head hurts too. ... still better than measuring mass in slugs. >>> >> But that sounds a lot of fun. >> "I was eating at McDonalds and gained three slugs!" haha > > > > My Favorite unit > > The rate of change of acceleration? > > The JERK! > > Cal > Then there is wobblicity which decreases with higher rpm. 8) -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metricks - Mill-Drill needs steppers and servos?
>> >> yea, my head hurts too. ... still better than measuring mass in slugs. >> > But that sounds a lot of fun. > "I was eating at McDonalds and gained three slugs!" haha My Favorite unit The rate of change of acceleration? The JERK! Cal -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metric? and aviation
> 2009/6/12 Douglas Pollard : > >> But what difference does base 10 make to a guy running a cnc machine?? The aviation industry stepped around the imperial system of linear measurement by ONLY using inches and decimal portions of them. Stations and waterlines! Don't civil engineers use a "foot" of ten "inches" in the US ? Perhaps not any more> Cal -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Subject: Re: Successive G0 moves
Dave, Alan, Andy, Thanks for the replies. I have read all of those things too. I would reiterate that this is something that occurs very rarely, but when it does happen it is very damaging. I have two basically identical machines which have been running for the last 7-9 months, and this problem has only occurred a handful of times over that span. It is also easily remedied in the G-Code, but the application is basically a once and done type, which means I need to in some way anticipate the conditions under which it occurs. My current brute force approach is to insert an additional line of G-code between consecutive G0 moves any time the distance of the first G0 move exceeds some threshold. Even though 99.% of the time, the extra line of code is superfluous. But without being able to quantify exactly when it will occur, there is no guarantee that my brute force fix will in fact prevent it from occurring under any circumstance. Regards, Eric For rapid linear motion, program G0 X- Y- Z- A- B- C-, where all the axis words are optional, except that at least one must be used. The G0 is optional if the current motion mode is G0. This will produce coordinated linear motion to the destination point at the current traverse rate (or slower if the machine will not go that fast). It is expected that cutting will not take place when a G0 command is executing. It is an error if: . all axis words are omitted. If cutter radius compensation is active, the motion will differ from the above; see Appendix B. If G53 is programmed on the same line, the motion will also differ; see Section 3.5.12. Somehow the definition and the described motion don't seem to match. Bug? -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metric
2009/6/12 Ian Wright : > You can also find most sizes from 0.10 inch (.254mm) up in > the table on my website at http://tinyurl.com/mhmc27 . Ah, yes. Better layout, more sizes. Still has my name at the bottom, gets my vote :-) -- atp -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Need to Control 6 Axis Hexapod with 2 Additional Coordinated Axes. All Stepper
On Fri, 12 Jun 2009, Rob Antonides wrote:
Date: Fri, 12 Jun 2009 12:48:30 -0700
From: Rob Antonides
To: emc-users@lists.sourceforge.net
Subject: [Emc-users] Need to Control 6 Axis Hexapod with 2 Additional
Coordinated Axes. All Stepper
Hi,
I would like to use one of Mesa's FPGA cards to drive 8 stepper axes. I
would ideally use 4 of their 7I32 stepper driver cards to drive all 8
steppers. This is for a 6 axis hexapod with a rotary axis on top and
another stepper for extrusion.
If you are using EMC, the 7I32 is not currently supported (it could be by
extending the stepgenerator to output the sin/cos PWMs that the 7I32 uses)
Probably a better option would be to use either the 5I20 or 7I43 and some
low end step+dir drives
Thanks for your time.
Rob Antonides
Robotics and Motion Control in the Pacific Northwest
Apex Motion Control, Inc.
16056 92A Ave
Surrey BC V4N 3E2
Canada
r...@apexmotion.com
www.apexmotion.com
Ph: (604) 780-9344
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Peter Wallace
Mesa Electronics
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(='.'=) This is Bunny. Copy and paste bunny into your
(")_(") signature to help him gain world domination.
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[Emc-users] Need to Control 6 Axis Hexapod with 2 Additional Coordinated Axes. All Stepper
Hi, I would like to use one of Mesa's FPGA cards to drive 8 stepper axes. I would ideally use 4 of their 7I32 stepper driver cards to drive all 8 steppers. This is for a 6 axis hexapod with a rotary axis on top and another stepper for extrusion. >From what I understand EMC2 only supports EPP or PCI. I also need at least 4 50 pin headers to connect to the stepper daughter cards. This leaves me with the 5I22. Is the 7I60 also an option? I don't think so because it only has serial ports. The 7I60 is a nice solution for me, because eventually I would like this to be a standalone controller with the motion control program right on the FPGA. Is the Xilinx WebPack easy to program with? Does someone have experience with this? Thanks for your time. Rob Antonides Robotics and Motion Control in the Pacific Northwest Apex Motion Control, Inc. 16056 92A Ave Surrey BC V4N 3E2 Canada r...@apexmotion.com www.apexmotion.com Ph: (604) 780-9344 -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Subject: Re: Successive G0 moves
On Jun 12, 2009, at 10:46 AM, Alan Condit wrote: >> From: Andy Pugh - 2009-06-12 16:38 >>> >>> 2009/6/12 Eric H. Johnson : >>> It is my understanding that a rapid move (G0) should fully >>> complete before a >>> subsequent motion command will start. In this case I am doing two >>> successive >>> G0 moves, where in very rare occasions, >> >> I don't think that is necessarily true. Look at >> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?TrajectoryControl >> >> Or, if you really want to visit every point, use G61. >> >> -- >> atp >> >> > I understand the blending on cutting moves, but on G0 it sounds > particularly dangerous. If someone planned their G0 moves to miss > clamps or the like, having them blended could be dangerous. > > Alan > > --- > > Alan Condit > 1085 Tierra Ct. > Woodburn, OR 97071 > > Email -- acon...@ipns.com > Home-Office (503) 982-0906 > For rapid linear motion, program G0 X- Y- Z- A- B- C-, where all the axis words are optional, except that at least one must be used. The G0 is optional if the current motion mode is G0. This will produce coordinated linear motion to the destination point at the current traverse rate (or slower if the machine will not go that fast). It is expected that cutting will not take place when a G0 command is executing. It is an error if: · all axis words are omitted. If cutter radius compensation is active, the motion will differ from the above; see Appendix B. If G53 is programmed on the same line, the motion will also differ; see Section 3.5.12. Somehow the definition and the described motion don't seem to match. Bug? Dave > -- > > Crystal Reports - New Free Runtime and 30 Day Trial > Check out the new simplified licensing option that enables unlimited > royalty-free distribution of the report engine for externally facing > server and web deployment. > http://p.sf.net/sfu/businessobjects > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] X2 conversion
Please - MISTER Michalski is my dad :-) Your welcome. There was so much information gathered from open source I just had to publish my work freely. Hope so of it can be of use. Greg www.distinctperspectives.com > -Original Message- > From: Wayne Patterson [mailto:way...@wavelinx.net] > Sent: Friday, June 12, 2009 2:25 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] X2 conversion > > I can't thank all you guys enough! > BTW, I like your site Mr. Michalski. > Again thanks for all the info. > lennywayne > > Greg Michalski wrote: > > As a side note I believe the wiki reference on the X3 is the one I posted. > > Much more info at ww.distinctperspectives.com I realize it's not the same > > machine but the principles in making a backlash free mechanical setup (thus > > reducing headaches later) are well worth reading and studying. Plans are > > freely available. Also checkout cnczone.com in the benchtop mills section, > > particalulary all postings by HOSS or HOSS2006 (iirc) - he has gone > > overboard modding his X2 to the point of one being dubbed "The Freak". Also > > you can find a multitude of hookups there as well. Welcome to the list and > > good luck. Hope to see your EMC benchtop here in the future! > > > > Greg > > www.distinctperspectives.com > > > > > >> -Original Message- > >> From: John Thornton [mailto:bjt...@gmail.com] > >> Sent: Friday, June 12, 2009 11:43 AM > >> To: Enhanced Machine Controller EEMC" > >> Subject: Re: [Emc-users] X2 conversion > >> > >> > >> On 12 Jun 2009 at 9:04, Wayne Patterson wrote: > >> > >> > >>> Hey Guys, > >>> I am at a point that I need to convert my Sieg X2 mill to CNC > >>> control. I > >>> have found two kits/plans online and wanted to know if anyone on the > >>> list has used them? They are the "Steele Company's" conversion > >>> kit/plan > >>> and the "FigNoggle Designs" kits/plans. For what it is worth I plan > >>> on > >>> building the parts so I will be using the plans and not the kits. > >>> > >> In most cases if you chat a bit with other users that have that type of > >> > > mini mill > > > >> you might not need any "plans" to do the conversion. Try asking on the EMC > >> > > IRC > > > >> you might > >> run across someone that has a mill similar to yours. > >> > >> Doing a quick search on the EMC Wiki site I found this link > >> > >> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?An_X3_Benchtop_Mill_Conversion > >> > >> > >>> Right now my biggest concern is the electronics. While I am > >>> confident in > >>> building parts for the machine, the electronics is some what > >>> daunting. I > >>> have bought three "Linistepper" driver boards and assembled them > >>> with > >>> satisfactory results. But I 'm lost when it comes to the > >>> controllers. > >>> > >> You can either connect it directly to the parallel port or to a breakout > >> > > board > > > >> like the CNC4PC C10 for $25. You will have to find 5-wire or 6-wire > >> > > (unipolar) > > > >> motors > >> (not the most popular) for the Linistepper boards. It's a little late for > >> > > you but > > > >> in most cases when you spend $40 for a hobby driver board you end up with > >> $250 worth of headaches. When for $70 you could have purchased a good > >> > > quality > > > >> commercial driver like the Gecko G251. > >> > >> > >>> From what I have read I am leaning to the Mesa 7I43 to connect the > >>> driver boards to the PC. I also want to add DRO using ShumaTechs > >>> DRO-350. And was wondering if that could be integrated into EMC some > >>> how. If anyone has used any of these parts and/or plans and could > >>> give > >>> me some advice it would be greatly appreciated. My funds are limited > >>> and > >>> I don't want to waste it on things that will not work or conflict > >>> with EMC. > >>> Thanks in advance for any help! > >>> lennywayne > >>> > >> The DRO-350 is a quality product. I have built two and installed one on my > >> > > manual > > > >> mill. The > >> second one is for my manual lathe but I've not been motivated to figure > >> > > out how to > > > >> mount > >> scales on the lathe. It's only use for you would be when your in manual > >> > > mode. It > > > >> could not > >> be connected to EMC AFAIK. > >> > >> > >> John > >> > >> > >> > > > > -- > > > >> Crystal Reports - New Free Runtime and 30 Day Trial > >> Check out the new simplified licensing option that enables unlimited > >> royalty-free distribution of the report engine for externally facing > >> server and web deployment. > >> http://p.sf.net/sfu/businessobjects > >> ___ > >> Emc-users mailing list > >> Emc-users@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/emc-users > >> > > > > > > -- > > Crystal Reports - New Free Runtime and 30 Day Trial > > Check out the n
Re: [Emc-users] X2 conversion
I can't thank all you guys enough! BTW, I like your site Mr. Michalski. Again thanks for all the info. lennywayne Greg Michalski wrote: > As a side note I believe the wiki reference on the X3 is the one I posted. > Much more info at ww.distinctperspectives.com I realize it's not the same > machine but the principles in making a backlash free mechanical setup (thus > reducing headaches later) are well worth reading and studying. Plans are > freely available. Also checkout cnczone.com in the benchtop mills section, > particalulary all postings by HOSS or HOSS2006 (iirc) - he has gone > overboard modding his X2 to the point of one being dubbed "The Freak". Also > you can find a multitude of hookups there as well. Welcome to the list and > good luck. Hope to see your EMC benchtop here in the future! > > Greg > www.distinctperspectives.com > > >> -Original Message- >> From: John Thornton [mailto:bjt...@gmail.com] >> Sent: Friday, June 12, 2009 11:43 AM >> To: Enhanced Machine Controller EEMC" >> Subject: Re: [Emc-users] X2 conversion >> >> >> On 12 Jun 2009 at 9:04, Wayne Patterson wrote: >> >> >>> Hey Guys, >>> I am at a point that I need to convert my Sieg X2 mill to CNC >>> control. I >>> have found two kits/plans online and wanted to know if anyone on the >>> list has used them? They are the "Steele Company's" conversion >>> kit/plan >>> and the "FigNoggle Designs" kits/plans. For what it is worth I plan >>> on >>> building the parts so I will be using the plans and not the kits. >>> >> In most cases if you chat a bit with other users that have that type of >> > mini mill > >> you might not need any "plans" to do the conversion. Try asking on the EMC >> > IRC > >> you might >> run across someone that has a mill similar to yours. >> >> Doing a quick search on the EMC Wiki site I found this link >> >> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?An_X3_Benchtop_Mill_Conversion >> >> >>> Right now my biggest concern is the electronics. While I am >>> confident in >>> building parts for the machine, the electronics is some what >>> daunting. I >>> have bought three "Linistepper" driver boards and assembled them >>> with >>> satisfactory results. But I 'm lost when it comes to the >>> controllers. >>> >> You can either connect it directly to the parallel port or to a breakout >> > board > >> like the CNC4PC C10 for $25. You will have to find 5-wire or 6-wire >> > (unipolar) > >> motors >> (not the most popular) for the Linistepper boards. It's a little late for >> > you but > >> in most cases when you spend $40 for a hobby driver board you end up with >> $250 worth of headaches. When for $70 you could have purchased a good >> > quality > >> commercial driver like the Gecko G251. >> >> >>> From what I have read I am leaning to the Mesa 7I43 to connect the >>> driver boards to the PC. I also want to add DRO using ShumaTechs >>> DRO-350. And was wondering if that could be integrated into EMC some >>> how. If anyone has used any of these parts and/or plans and could >>> give >>> me some advice it would be greatly appreciated. My funds are limited >>> and >>> I don't want to waste it on things that will not work or conflict >>> with EMC. >>> Thanks in advance for any help! >>> lennywayne >>> >> The DRO-350 is a quality product. I have built two and installed one on my >> > manual > >> mill. The >> second one is for my manual lathe but I've not been motivated to figure >> > out how to > >> mount >> scales on the lathe. It's only use for you would be when your in manual >> > mode. It > >> could not >> be connected to EMC AFAIK. >> >> >> John >> >> >> > > -- > >> Crystal Reports - New Free Runtime and 30 Day Trial >> Check out the new simplified licensing option that enables unlimited >> royalty-free distribution of the report engine for externally facing >> server and web deployment. >> http://p.sf.net/sfu/businessobjects >> ___ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > > > -- > Crystal Reports - New Free Runtime and 30 Day Trial > Check out the new simplified licensing option that enables unlimited > royalty-free distribution of the report engine for externally facing > server and web deployment. > http://p.sf.net/sfu/businessobjects > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > > -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited roy
[Emc-users] Subject: Re: Successive G0 moves
> From: Andy Pugh - 2009-06-12 16:38 >> >> 2009/6/12 Eric H. Johnson : >> It is my understanding that a rapid move (G0) should fully >> complete before a >> subsequent motion command will start. In this case I am doing two >> successive >> G0 moves, where in very rare occasions, > > I don't think that is necessarily true. Look at > http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?TrajectoryControl > > Or, if you really want to visit every point, use G61. > > -- > atp > > I understand the blending on cutting moves, but on G0 it sounds particularly dangerous. If someone planned their G0 moves to miss clamps or the like, having them blended could be dangerous. Alan --- Alan Condit 1085 Tierra Ct. Woodburn, OR 97071 Email -- acon...@ipns.com Home-Office (503) 982-0906 -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metric?
Andy Pugh wrote: > 2009/6/12 Douglas Pollard : > > >> The Germans have have a set of metric standards the English have >> ISO standards and the Spanish have still another. >> > > I _think_ that DIN (German) BS( British) JIS (Japanes) and the rest > have all converged on ISO (Inrternational) but I might be wrong. > > >> Imperial bolts are designed to break before the threads pull out >> of the parent metal. The best thread pitch is picked for the bolt >> diameter to achive this partially by having a smaller or larger root >> diameter. >> > > Ah, but you eschewed the One True Thread angle (Whitworth 55 degrees), > rounding up to 60 degrees, which has a fractionally less optimum ratio > of self-locking to tension. > > The least useful standard I have come across is UNF, which seems > designed to seize irretrievably at the first hint of corrosion. In > contrast I have dismantled bits of old commercial vehicles left in > fields for 70 years where the hexes on the (Whitworth) nuts were half > their original size, and they just unscrewed like normal (once we > found a random socket that nearly fitted) > > This might be a good time to point you at my "Thread identification > table" which lists all the threads from all the standards I could find > at the time in the same table, in size order. In retrospect I omitted > the metric sizes below 3mm, and similarly many of the smaller American > sizes. > http://www.bodgesoc.org/thread_dia_pitch.html > (You can click the headers to link to lists sorted differently) > > Andy that's a nice chart I will bookmark it on both of my computers. I notice the ISO metric threads are also 60 degrees which was kind of surprising since as far as I know Britain came up with it in the first place. Someplace in the Machinerys hand book, I think there is a notation on why 55 deg and why 60 degrees. I just looked but can't find it. Maybe it was in an older version. I would have never considered that either angle would be locking. I always thought down around 7 degrees might be locking. Any way haven't thought about it in long time, so I don't know. Now, I am now curious. Doug -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metric
Andy wrote...<< You can also find most sizes from 0.10 inch (.254mm) up in the table on my website at http://tinyurl.com/mhmc27 . This information is also down-loadable as an Excel file if you want to keep a copy in the workshop. Ian -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] emc.nbl
Good Grief this is a young group. ;-) Happy Birthday Stuart! Dave On Jun 12, 2009, at 9:03 AM, Jon Elson wrote: > Stuart Stevenson wrote: >> Gentlemen, >>Sorry about the dsyelixc command line. :) I think it is the result >> of old age. Today is the marking of another year. Wish me happy >> birthday. I am 56 today. >> > Wow! You are a lot closer to me than I thought! I'm 58. > > Happy birthday, Stuart! > > Jon > > -- > > Crystal Reports - New Free Runtime and 30 Day Trial > Check out the new simplified licensing option that enables unlimited > royalty-free distribution of the report engine for externally facing > server and web deployment. > http://p.sf.net/sfu/businessobjects > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] X2 conversion
On Fri, 12 Jun 2009, Wayne Patterson wrote:
> Date: Fri, 12 Jun 2009 09:04:39 -0500
> From: Wayne Patterson
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: "Enhanced Machine Controller (EMC)"
> Subject: [Emc-users] X2 conversion
>
> Hey Guys,
> I am at a point that I need to convert my Sieg X2 mill to CNC control. I
> have found two kits/plans online and wanted to know if anyone on the
> list has used them? They are the "Steele Company's" conversion kit/plan
> and the "FigNoggle Designs" kits/plans. For what it is worth I plan on
> building the parts so I will be using the plans and not the kits.
> Right now my biggest concern is the electronics. While I am confident in
> building parts for the machine, the electronics is some what daunting. I
> have bought three "Linistepper" driver boards and assembled them with
> satisfactory results. But I 'm lost when it comes to the controllers.
> From what I have read I am leaning to the Mesa 7I43 to connect the
> driver boards to the PC. I also want to add DRO using ShumaTechs
> DRO-350. And was wondering if that could be integrated into EMC some
> how. If anyone has used any of these parts and/or plans and could give
> me some advice it would be greatly appreciated. My funds are limited and
> I don't want to waste it on things that will not work or conflict with EMC.
> Thanks in advance for any help!
> lennywayne
>
The 7I43 is probably overkill for what you are doing. EMC is quite capable of
driving your stepmotors up to stall speed via direct parallel port connection.
The 7I43 makes sense if:
1. You have microstepping or high voltage-high performance driver so you need
more than 20-50K steps/sec
2. You have a servo system
3. You need more or specialized I/O
Peter Wallace
Mesa Electronics
(\__/)
(='.'=) This is Bunny. Copy and paste bunny into your
(")_(") signature to help him gain world domination.
--
Crystal Reports - New Free Runtime and 30 Day Trial
Check out the new simplified licensing option that enables unlimited
royalty-free distribution of the report engine for externally facing
server and web deployment.
http://p.sf.net/sfu/businessobjects
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Re: [Emc-users] emc.nbl
Happy birthday, Stuart Shabbir --- On Fri, 6/12/09, Jon Elson wrote: > From: Jon Elson > Subject: Re: [Emc-users] emc.nbl > To: "Enhanced Machine Controller (EMC)" > Date: Friday, June 12, 2009, 9:03 AM > Stuart Stevenson wrote: > > Gentlemen, > > Sorry about the dsyelixc command line. :) > I think it is the result > > of old age. Today is the marking of another year. Wish > me happy > > birthday. I am 56 today. > > > Wow! You are a lot closer to me than I thought! > I'm 58. > > Happy birthday, Stuart! > > Jon > > -- > Crystal Reports - New Free Runtime and 30 Day Trial > Check out the new simplified licensing option that enables > unlimited > royalty-free distribution of the report engine for > externally facing > server and web deployment. > http://p.sf.net/sfu/businessobjects > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successive G0 moves
2009/6/12 Eric H. Johnson : > It is my understanding that a rapid move (G0) should fully complete before a > subsequent motion command will start. In this case I am doing two successive > G0 moves, where in very rare occasions, I don't think that is necessarily true. Look at http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?TrajectoryControl Or, if you really want to visit every point, use G61. -- atp -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] emc.nbl
Stuart Stevenson wrote: > Gentlemen, >Sorry about the dsyelixc command line. :) I think it is the result > of old age. Today is the marking of another year. Wish me happy > birthday. I am 56 today. > Wow! You are a lot closer to me than I thought! I'm 58. Happy birthday, Stuart! Jon -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metric
Jack wrote: <<<>>> The French tried it during the French Revolution when it was mandated by a decree on 5 Oct 1793. It was brought into use in 1794 and abandoned in 1795 The Chinese used a decimal time system alongside a duodecimal one for two or three thousand years. Their day was divided into 100 parts and also, optionally, into 12 double hours. The 100 parts were subdivided into 60 smaller parts. Their months were split into three periods of 10 days which they called xun and this is a term still used in some official documents. The 100 part day was dropped in the 17th century under the influence of Europeans and was changed instead to 96 parts. More recently, in 1998, Swatch tried to introduce a decimal time system which they called 'Swatch Internet Time' and which had 1000 'beats' per day. Like every other system, it didn't catch on. Best wishes Ian - Ian W Wright Sheffield UK -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metric
Jack wrote... <<<>> Why do programmers always get Christmas and Halloween mixed up? Because DEC 25 = OCT 31 Ian -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Speaking of metric
> Ed Nisley wrote > Given that money is power, I propose we measure & report all > financial changes in decibels. > > Hearing "The Dow was down 3 dB" yesterday wouldn't be very > disturbing, would it? > > Your previously extortionate 20% credit card rate would drop > to a mere 0.8 dB. Easy as falling off a log. John Prentice -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metric?
Andy - That is a wonderful table!!! Not to diminish it _any_ way shape of form but if one of our more savvy web types could make that page into frames so the column headings stay as you scroll down that would be an immensely useful shop/drafting board (antiquated term I know - but my company for some inane reason still uses them) tool. Bravo! Greg www.distinctperspectives.com > -Original Message- > From: Andy Pugh [mailto:a...@andypugh.fsnet.co.uk] > Sent: Friday, June 12, 2009 11:27 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Metric? > > 2009/6/12 Douglas Pollard : > > > The Germans have have a set of metric standards the English have > > ISO standards and the Spanish have still another. > > I _think_ that DIN (German) BS( British) JIS (Japanes) and the rest > have all converged on ISO (Inrternational) but I might be wrong. > > > Imperial bolts are designed to break before the threads pull out > > of the parent metal. The best thread pitch is picked for the bolt > > diameter to achive this partially by having a smaller or larger root > > diameter. > > Ah, but you eschewed the One True Thread angle (Whitworth 55 degrees), > rounding up to 60 degrees, which has a fractionally less optimum ratio > of self-locking to tension. > > The least useful standard I have come across is UNF, which seems > designed to seize irretrievably at the first hint of corrosion. In > contrast I have dismantled bits of old commercial vehicles left in > fields for 70 years where the hexes on the (Whitworth) nuts were half > their original size, and they just unscrewed like normal (once we > found a random socket that nearly fitted) > > This might be a good time to point you at my "Thread identification > table" which lists all the threads from all the standards I could find > at the time in the same table, in size order. In retrospect I omitted > the metric sizes below 3mm, and similarly many of the smaller American > sizes. > http://www.bodgesoc.org/thread_dia_pitch.html > (You can click the headers to link to lists sorted differently) > > -- > atp > > -- > Crystal Reports - New Free Runtime and 30 Day Trial > Check out the new simplified licensing option that enables unlimited > royalty-free distribution of the report engine for externally facing > server and web deployment. > http://p.sf.net/sfu/businessobjects > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Successive G0 moves
Hi all, It is my understanding that a rapid move (G0) should fully complete before a subsequent motion command will start. In this case I am doing two successive G0 moves, where in very rare occasions, the second G0 move will start to move before the first entirely completes. For example: G0 X20 Y15 G0 Z0.1 In very rare instances, the second G0 move will start (based on the example above) about 1" or so before the first G0 command has completed. But it isn't as simple as that, it seems to depend on both a long G0 move followed by a short G0 move followed by a number of short G1 moves (typically a series of short G1 moves approximating an arc). At least that is the closest thing to a pattern as I have been able to surmise based on the very few instances in which it occurs. It is repeatable, however. I have found a couple of work arounds by adjusting the g-code generated (HPGL -> G-Code), my real question is, should one be able to trust that one G0 command will complete before a subsequent G0 command starts? Thanks, Eric -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metric?
2009/6/12 Jack Coats : > > Would it also help if we did the same for time and went to a decimal clock > with 10 hours per day > and 100 minutes per hour, and 100 seconds per minute? It would certainly be a useful boost to the clockmaking and watchmaking industries. I did see a suggestion that 13 months of 28 days would be rather more logical. You then have New Years Day not be a day of the week, or part of any month and two of them on a leap year and it all works out. It also means that any given date is always the same say of the week. Saves all that messing about with "thirty days hath november, april may and" (Which you can see I never learned) -- atp -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metric?
2009/6/12 Douglas Pollard : > The Germans have have a set of metric standards the English have > ISO standards and the Spanish have still another. I _think_ that DIN (German) BS( British) JIS (Japanes) and the rest have all converged on ISO (Inrternational) but I might be wrong. > Imperial bolts are designed to break before the threads pull out > of the parent metal. The best thread pitch is picked for the bolt > diameter to achive this partially by having a smaller or larger root > diameter. Ah, but you eschewed the One True Thread angle (Whitworth 55 degrees), rounding up to 60 degrees, which has a fractionally less optimum ratio of self-locking to tension. The least useful standard I have come across is UNF, which seems designed to seize irretrievably at the first hint of corrosion. In contrast I have dismantled bits of old commercial vehicles left in fields for 70 years where the hexes on the (Whitworth) nuts were half their original size, and they just unscrewed like normal (once we found a random socket that nearly fitted) This might be a good time to point you at my "Thread identification table" which lists all the threads from all the standards I could find at the time in the same table, in size order. In retrospect I omitted the metric sizes below 3mm, and similarly many of the smaller American sizes. http://www.bodgesoc.org/thread_dia_pitch.html (You can click the headers to link to lists sorted differently) -- atp -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metric?
Would it also help if we did the same for time and went to a decimal clock with 10 hours per day and 100 minutes per hour, and 100 seconds per minute? (it would also be more accurate, 100,000 seconds per day versus 86,400, so the seconds would be smaller too!) Also time zones could be decimal, who needs 24 of them, we could just use 10. The same for latitude and longitude, and any 'angle based' need, using 100 degree circles with 100 seconds between each degree. (or 1000 decidegrees per circle?) ... We could just go computer and do it all in binary, or to be more succinct in hexadecimal. ... Then there is that nasty little thing called language. If we all spoke, wrote, read, and understood the same language the same way we could have less mis-understanding in most realms of life. Even in one language we have dialects that keep us apart now. Queens English vs Americal English vs Scottish or Welsh English vs NYC English vs New Jersey English vs ... we can go on. Or we could figure things are what they are, deal with it, and go on with life. -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] emc.nbl
Stuart Stevenson wrote: > Gentlemen, >Sorry about the dsyelixc command line. :) I think it is the result > of old age. Today is the marking of another year. Wish me happy > birthday. I am 56 today. > thanks > Stuart > Happy birthday, Stuart. You look pretty good for 65. (Pardon my dislexia.) :-) Ken > On Fri, Jun 12, 2009 at 8:04 AM, Stuart Stevenson wrote: > >> Gentlemen, >> This is the return from the command line start. >> >> stus...@stustev-laptop:~$ emc2-trunk-sim/scripts/emc >> EMC2 - 2.4.0~pre >> Machine configuration directory is >> '/home/stustev/emc2-trunk-sim/configs/vismach' >> Machine configuration file is '5axhydrotel.ini' >> Starting EMC2... >> libnml/cms/cms_cfg.cc 621: cms_config: can't open 'emc.nml'. Error = 2 >> -- No such file or directory >> libnml/nml/nml.cc 368: NML: cms_config returned -1. >> >> ** >> * Current Directory = /home/stustev/emc2-trunk-sim/configs/vismach >> * >> ** >> * BufferName = toolCmd >> * ProcessName = tool >> * Config File = emc.nml >> * error_type = 0 (NML_NO_ERROR) >> >> >> emcToolCmd buffer not available >> libnml/cms/cms_cfg.cc 621: cms_config: can't open 'emc.nml'. Error = 2 >> -- No such file or directory >> libnml/nml/nml.cc 368: NML: cms_config returned -1. >> >> ** >> * BufferName = toolSts >> * ProcessName = tool >> * Config File = emc.nml >> * error_type = 0 (NML_NO_ERROR) >> >> >> toolSts buffer not available >> libnml/cms/cms_cfg.cc 621: cms_config: can't open 'emc.nml'. Error = 2 >> -- No such file or directory >> >> ** >> * BufferName = emcError >> * ProcessName = tool >> * Config File = emc.nml >> * error_type = 3 (NML_INVALID_CONFIGURATION) >> >> >> emcError buffer not available >> can't connect to NML buffers in emc.nml >> 5axhydrotel.hal:31: execv(5axhydrotelgui) failed >> 5axhydrotel.hal:31: 5axhydrotelgui exited without becoming ready >> Shutting down and cleaning up EMC2... >> emc2-trunk-sim/scripts/emc: line 386: emc.nml: No such file or directory >> Cleanup done >> EMC terminated with an error. You can find more information in the log: >>/home/stustev/emc_debug.txt >> and >>/home/stustev/emc_print.txt >> >> thanks >> Stuart >> -- >> you can lead a person to knowledge >> but you cannot make him think >> >> > > > > -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] X2 conversion
As a side note I believe the wiki reference on the X3 is the one I posted. Much more info at ww.distinctperspectives.com I realize it's not the same machine but the principles in making a backlash free mechanical setup (thus reducing headaches later) are well worth reading and studying. Plans are freely available. Also checkout cnczone.com in the benchtop mills section, particalulary all postings by HOSS or HOSS2006 (iirc) - he has gone overboard modding his X2 to the point of one being dubbed "The Freak". Also you can find a multitude of hookups there as well. Welcome to the list and good luck. Hope to see your EMC benchtop here in the future! Greg www.distinctperspectives.com > -Original Message- > From: John Thornton [mailto:bjt...@gmail.com] > Sent: Friday, June 12, 2009 11:43 AM > To: Enhanced Machine Controller EEMC" > Subject: Re: [Emc-users] X2 conversion > > > On 12 Jun 2009 at 9:04, Wayne Patterson wrote: > > > Hey Guys, > > I am at a point that I need to convert my Sieg X2 mill to CNC > > control. I > > have found two kits/plans online and wanted to know if anyone on the > > list has used them? They are the "Steele Company's" conversion > > kit/plan > > and the "FigNoggle Designs" kits/plans. For what it is worth I plan > > on > > building the parts so I will be using the plans and not the kits. > > In most cases if you chat a bit with other users that have that type of mini mill > you might not need any "plans" to do the conversion. Try asking on the EMC IRC > you might > run across someone that has a mill similar to yours. > > Doing a quick search on the EMC Wiki site I found this link > > http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?An_X3_Benchtop_Mill_Conversion > > > Right now my biggest concern is the electronics. While I am > > confident in > > building parts for the machine, the electronics is some what > > daunting. I > > have bought three "Linistepper" driver boards and assembled them > > with > > satisfactory results. But I 'm lost when it comes to the > > controllers. > > You can either connect it directly to the parallel port or to a breakout board > like the CNC4PC C10 for $25. You will have to find 5-wire or 6-wire (unipolar) > motors > (not the most popular) for the Linistepper boards. It's a little late for you but > in most cases when you spend $40 for a hobby driver board you end up with > $250 worth of headaches. When for $70 you could have purchased a good quality > commercial driver like the Gecko G251. > > > From what I have read I am leaning to the Mesa 7I43 to connect the > > driver boards to the PC. I also want to add DRO using ShumaTechs > > DRO-350. And was wondering if that could be integrated into EMC some > > how. If anyone has used any of these parts and/or plans and could > > give > > me some advice it would be greatly appreciated. My funds are limited > > and > > I don't want to waste it on things that will not work or conflict > > with EMC. > > Thanks in advance for any help! > > lennywayne > > The DRO-350 is a quality product. I have built two and installed one on my manual > mill. The > second one is for my manual lathe but I've not been motivated to figure out how to > mount > scales on the lathe. It's only use for you would be when your in manual mode. It > could not > be connected to EMC AFAIK. > > > John > > -- > Crystal Reports - New Free Runtime and 30 Day Trial > Check out the new simplified licensing option that enables unlimited > royalty-free distribution of the report engine for externally facing > server and web deployment. > http://p.sf.net/sfu/businessobjects > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] emc.nbl
Happy Birthday! > Stuart Stevenson wrote: >> Gentlemen, >>I am 56 today. > > > Happy Birthday. You have me by a few - 47 last week. Me by a couple more :) 29 three weeks ago.. Alex -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metric?
Rainer Schmidt wrote: > I can vouch for the problems the us imperial system is creating. > There is not a single day in a custom shop I know off where there are > no parts messed up because of conversion problems which simply would > not exist with the metric system. Instead of simply shifting the > decimal point one has to be aware of the 12 the 3 and the fractions to > the respective decimals. At time the US imperial unit system is like a > rubics cube which has to be solved before the emergency exit can be > opened compared to a button you can press blindly. I know I am > exaggerating but the pile of little cut off's next to the chop saw is > telling a story. It's the 'Doh' pile. > Rainer > > -- > Crystal Reports - New Free Runtime and 30 Day Trial > Check out the new simplified licensing option that enables unlimited > royalty-free distribution of the report engine for externally facing > server and web deployment. > http://p.sf.net/sfu/businessobjects > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > There are American standards for threads, gears and other things like bolts etc. These are fixed and in every case are determined by best practices. The Germans have have a set of metric standards the English have ISO standards and the Spanish have still another. We here in the US have come closer to standardizing the metric system for screw threads than anyone in the world. We specify a metric screw and never say which standard, as a rule the the machinist makes it to one of the three. The Chinese don't work to any standards and at the same time they try to work to everyones. Imperial bolts are designed to break before the threads pull out of the parent metal. The best thread pitch is picked for the bolt diameter to achive this partially by having a smaller or larger root diameter. Europeans after WWII tried to copy this into the metric system for bolts and did a pretty good job. I am not sure this is true but I was told in apprentice school that prior to then they only had fine threads and determined whether the threads would strip out in the parent metal buy how deep the thread was. To a degree we do the same if the bolt and drilled an tapped whole are not in the same kind of metal. For example, a hardened steel bolt and a drilled and tapped hole in an aluminum engine block. The first rule in mechanical design is no sharp corners. Dig some bolts out of the drawer and look at them the all have sharp v threads they are not to any standard. Every standard in the world calls for a radius or truncation in the root of the thread. As a result nobody can calculate the strength of the bolt. The metric thread system is a kind one size fits all. There are only a couple threads for each size. Very convient but there is a reason we have so many threads and that is they all serve different purposes. The metric system has traditionally put more concerned itself with fitting the threads into a convient metric system instead of being the best thread pitch for the job. Since the metric system uses decimal places the same as we do I don't see where it's any easyier to use than imperial. Most of the fractions come into play because a machinist says in his own mind .493 Hmm that's about a half inch. More than likely a half inch shows up on a drawing as .5 or .50 or .500 it's all the same thing. It sounds like an excuse to me that a guy cut a piece of steel wrong because there were three decimal places instead of one. Does he also mistake a centimeter for a millimeter? Most parts are dimentioned on cad why in the heck would anyone be using fractions on cad cam? So if metric is not standard the world over and imperial is not why are we knocking ourselves out over this. For me this is not really about metrics or imperial. I think a huge majority of Americans think that anything that takes place in Europe is somehow wonderful. We are ashamed to drive an American car, just not enough prestige. What ever it is if it's US made it is somehow inferior to European. Their parliamentary governments are better, their health care is better, and we Americans are crude and unwashed. This of course is not a scientific argument it's a machinists argument and an American argument and they are both real , says me. Geeze, I have finally worked my way around to my pet peeve. I guess this is really where I'm coming from :-) Sorry guys, I started to delete this whole thing and changed my mind as there might be something here for somebody . Doug -
Re: [Emc-users] X2 conversion
On 12 Jun 2009 at 9:04, Wayne Patterson wrote: > Hey Guys, > I am at a point that I need to convert my Sieg X2 mill to CNC > control. I > have found two kits/plans online and wanted to know if anyone on the > list has used them? They are the "Steele Company's" conversion > kit/plan > and the "FigNoggle Designs" kits/plans. For what it is worth I plan > on > building the parts so I will be using the plans and not the kits. In most cases if you chat a bit with other users that have that type of mini mill you might not need any "plans" to do the conversion. Try asking on the EMC IRC you might run across someone that has a mill similar to yours. Doing a quick search on the EMC Wiki site I found this link http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?An_X3_Benchtop_Mill_Conversion > Right now my biggest concern is the electronics. While I am > confident in > building parts for the machine, the electronics is some what > daunting. I > have bought three "Linistepper" driver boards and assembled them > with > satisfactory results. But I 'm lost when it comes to the > controllers. You can either connect it directly to the parallel port or to a breakout board like the CNC4PC C10 for $25. You will have to find 5-wire or 6-wire (unipolar) motors (not the most popular) for the Linistepper boards. It's a little late for you but in most cases when you spend $40 for a hobby driver board you end up with $250 worth of headaches. When for $70 you could have purchased a good quality commercial driver like the Gecko G251. > From what I have read I am leaning to the Mesa 7I43 to connect the > driver boards to the PC. I also want to add DRO using ShumaTechs > DRO-350. And was wondering if that could be integrated into EMC some > how. If anyone has used any of these parts and/or plans and could > give > me some advice it would be greatly appreciated. My funds are limited > and > I don't want to waste it on things that will not work or conflict > with EMC. > Thanks in advance for any help! > lennywayne The DRO-350 is a quality product. I have built two and installed one on my manual mill. The second one is for my manual lathe but I've not been motivated to figure out how to mount scales on the lathe. It's only use for you would be when your in manual mode. It could not be connected to EMC AFAIK. John -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] X2 conversion
Hey Guys, I am at a point that I need to convert my Sieg X2 mill to CNC control. I have found two kits/plans online and wanted to know if anyone on the list has used them? They are the "Steele Company's" conversion kit/plan and the "FigNoggle Designs" kits/plans. For what it is worth I plan on building the parts so I will be using the plans and not the kits. Right now my biggest concern is the electronics. While I am confident in building parts for the machine, the electronics is some what daunting. I have bought three "Linistepper" driver boards and assembled them with satisfactory results. But I 'm lost when it comes to the controllers. From what I have read I am leaning to the Mesa 7I43 to connect the driver boards to the PC. I also want to add DRO using ShumaTechs DRO-350. And was wondering if that could be integrated into EMC some how. If anyone has used any of these parts and/or plans and could give me some advice it would be greatly appreciated. My funds are limited and I don't want to waste it on things that will not work or conflict with EMC. Thanks in advance for any help! lennywayne -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] emc.nbl
Stuart Stevenson wrote: > Gentlemen, >I am 56 today. Happy Birthday. You have me by a few - 47 last week. John -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] emc.nbl
Gentlemen, Sorry about the dsyelixc command line. :) I think it is the result of old age. Today is the marking of another year. Wish me happy birthday. I am 56 today. thanks Stuart On Fri, Jun 12, 2009 at 8:04 AM, Stuart Stevenson wrote: > Gentlemen, > This is the return from the command line start. > > stus...@stustev-laptop:~$ emc2-trunk-sim/scripts/emc > EMC2 - 2.4.0~pre > Machine configuration directory is > '/home/stustev/emc2-trunk-sim/configs/vismach' > Machine configuration file is '5axhydrotel.ini' > Starting EMC2... > libnml/cms/cms_cfg.cc 621: cms_config: can't open 'emc.nml'. Error = 2 > -- No such file or directory > libnml/nml/nml.cc 368: NML: cms_config returned -1. > > ** > * Current Directory = /home/stustev/emc2-trunk-sim/configs/vismach > * > ** > * BufferName = toolCmd > * ProcessName = tool > * Config File = emc.nml > * error_type = 0 (NML_NO_ERROR) > > > emcToolCmd buffer not available > libnml/cms/cms_cfg.cc 621: cms_config: can't open 'emc.nml'. Error = 2 > -- No such file or directory > libnml/nml/nml.cc 368: NML: cms_config returned -1. > > ** > * BufferName = toolSts > * ProcessName = tool > * Config File = emc.nml > * error_type = 0 (NML_NO_ERROR) > > > toolSts buffer not available > libnml/cms/cms_cfg.cc 621: cms_config: can't open 'emc.nml'. Error = 2 > -- No such file or directory > > ** > * BufferName = emcError > * ProcessName = tool > * Config File = emc.nml > * error_type = 3 (NML_INVALID_CONFIGURATION) > > > emcError buffer not available > can't connect to NML buffers in emc.nml > 5axhydrotel.hal:31: execv(5axhydrotelgui) failed > 5axhydrotel.hal:31: 5axhydrotelgui exited without becoming ready > Shutting down and cleaning up EMC2... > emc2-trunk-sim/scripts/emc: line 386: emc.nml: No such file or directory > Cleanup done > EMC terminated with an error. You can find more information in the log: > /home/stustev/emc_debug.txt > and > /home/stustev/emc_print.txt > > thanks > Stuart > -- > you can lead a person to knowledge > but you cannot make him think > -- you can lead a person to knowledge but you cannot make him think -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] emc.nbl
Gentlemen, This is the return from the command line start. stus...@stustev-laptop:~$ emc2-trunk-sim/scripts/emc EMC2 - 2.4.0~pre Machine configuration directory is '/home/stustev/emc2-trunk-sim/configs/vismach' Machine configuration file is '5axhydrotel.ini' Starting EMC2... libnml/cms/cms_cfg.cc 621: cms_config: can't open 'emc.nml'. Error = 2 -- No such file or directory libnml/nml/nml.cc 368: NML: cms_config returned -1. ** * Current Directory = /home/stustev/emc2-trunk-sim/configs/vismach * ** * BufferName = toolCmd * ProcessName = tool * Config File = emc.nml * error_type = 0 (NML_NO_ERROR) emcToolCmd buffer not available libnml/cms/cms_cfg.cc 621: cms_config: can't open 'emc.nml'. Error = 2 -- No such file or directory libnml/nml/nml.cc 368: NML: cms_config returned -1. ** * BufferName = toolSts * ProcessName = tool * Config File = emc.nml * error_type = 0 (NML_NO_ERROR) toolSts buffer not available libnml/cms/cms_cfg.cc 621: cms_config: can't open 'emc.nml'. Error = 2 -- No such file or directory ** * BufferName = emcError * ProcessName = tool * Config File = emc.nml * error_type = 3 (NML_INVALID_CONFIGURATION) emcError buffer not available can't connect to NML buffers in emc.nml 5axhydrotel.hal:31: execv(5axhydrotelgui) failed 5axhydrotel.hal:31: 5axhydrotelgui exited without becoming ready Shutting down and cleaning up EMC2... emc2-trunk-sim/scripts/emc: line 386: emc.nml: No such file or directory Cleanup done EMC terminated with an error. You can find more information in the log: /home/stustev/emc_debug.txt and /home/stustev/emc_print.txt thanks Stuart -- you can lead a person to knowledge but you cannot make him think -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] emc.nbl
On TRUNK, you should be able to remove [EMC]NML_FILE from your inifile. WHen you do this, emc.nml in a default location will be used instead. All the sample inifiles on TRUNK were edited to work this way around May 4 2009. The Makefiles on TRUNK no longer make any copies of emc.nml. I believe Alex's information in another reply is incorrect. If you still want to specify [EMC]NML_FILE, for instance so that your config also works on 2.3 without changes, copy it from configs/common to the directory with your inifile. Jeff -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metric?
I can vouch for the problems the us imperial system is creating. There is not a single day in a custom shop I know off where there are no parts messed up because of conversion problems which simply would not exist with the metric system. Instead of simply shifting the decimal point one has to be aware of the 12 the 3 and the fractions to the respective decimals. At time the US imperial unit system is like a rubics cube which has to be solved before the emergency exit can be opened compared to a button you can press blindly. I know I am exaggerating but the pile of little cut off's next to the chop saw is telling a story. It's the 'Doh' pile. Rainer -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metrics
Andy Pugh wrote: <>> What's one of those Andy? ;-) - Oh, maybe you mean Metre and not something for measuring with... time someone standardised the 'English' language ( and yes, I did spell 'standardised' correctly!) I think you will find that the International Master Kilogram IS getting lighter due to 'corrosion' and atoms being knocked off by cosmic rays etc... Also, the International time standard is not one Rubidium-based clock but the average time of about 300 Caesium clocks distributed around the world. Of course, comparing these clocks is not easy as their time has to be relayed to a central point by satellite and the time for the signal to reach the satellite and bounce back to earth can vary dependent upon weather conditions, solar wind etc.. Another thing, of course, is that you can never know the exact time at any particular point in your travel through life because, while you are reading it, that time has passed and so, all-in-all, time is really just a guess at an arbitrary number. As an horologist, time is MY hang-up I'm afraid... Best wishes, Ian Ian W. Wright Sheffield UK at " 11:45 and twenty seconds precisely.." -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Speaking of metric
Given that money is power, I propose we measure & report all financial changes in decibels. Hearing "The Dow was down 3 dB" yesterday wouldn't be very disturbing, would it? Your previously extortionate 20% credit card rate would drop to a mere 0.8 dB. But your CDs would yield 0.08 dB and let's not talk about your savings account (remember those?). OK, enough of this... -- Ed -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metricks - Mill-Drill needs steppers and servos?
2009/6/12 Ian Wright : > this illustrates one of the > sillinesses of our use of the metric system - 1 inch is a > good approximation but 2.54mm is not an approximation, its a > direct conversion from an inch and accurate to 4 thou. FWIW an inch is _exactly_ 25.4mm as it was officially redefined that way, so it can be traced back to the same standards. As pointed out elsewhere, the metre is defined as a decimal fraction of the quarter-circumference of the earth, measured badly. As for the metre being defined in terms of the distance travelled by light, this is to relate the metre back to the second and as part of a movement away from physical prototypes. It means that someone can calibrate their equipment without borrowing the international prototype meter. The second is defined in terms of oscillation counts of an atomic clock. Given such a clock and a laser, you can calibrate length. In effect you are using the assumption that all Rubidium (I think) atoms are identical to define both. Physical protypes are troublesome. The Wikipedia page on the International Prototype Kilogram goes into this in some detail, as it seems that either the master kilogram mass is getting lighter, or all the national standards are getting heavier. Hence the idea of defining a kilogram as "exactly 2.1507303E22 atoms of 28Silicon" Sorry, you have touched on one of my geekier interests here :-) -- atp -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metric?
2009/6/12 Douglas Pollard : > But what difference does base 10 make to a guy running a cnc machine?? Absolutely none at all. The numbers are just numbers, and it doesn't matter what the units are as they are always [length] There does seem to be a little confusion inside EMC between /second and /minute rates. I think the stepconf wizard is all in /second and Axis and the interpreter use /minute for feeds and speeds. The SI system is significantly simpler when it comes to mixed-unit calculations as it is a consistent system. For example power is exactly torque x speed rather than needing a constant term (and as long as you measure speed in rad/sec) It is not without it's own historical issues, though. The base unit of mass is the kg. Ideally this should be renamed to either be a gram (which would cause confusion) or be given a new name without the spurious "kilo" Personally I do "science" in metric, as that is what we were taught at school. However I tend to make things in Imperial because when I was a kid "helping" my dad in his home workshop everything there is imperial. Similarly with building their house, we use imperial to simplify communications. Despite being a metric country (the UK) the only legal unit for beer is Pints, and road signs are mandated to be in miles, speed limits in mph and junction warnings in yards. We buy fuel in litres now, though, so I think of fuel consumption in miles per litre. -- atp -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metrics
> back that metric is scientific measurement because it is a part of the > > circumference of the world. That may matter to a map maker but I don't <<<>>> In actual fact, the metre has no relationship to any physical thing. It arose as a 'standard' measurement in 1791 after the French revolution when King Louis XVII instructed the French Academy of Sciences to define a standard metre. They decided that it should be One ten-millionth of the distance from the North Pole to the Equator measured on a line which passed through Paris. Unfortunately, even though the best minds in Paris at the time spent about four years working on this, they failed to allow for the flattening of the earth near the poles and so got the measurement wrong. At about the same time both the UK and the US were also proposing a change to metric measurements and Thomas Jefferson made a report to Congress on 4the July 1790 with such proposals. If this had been accepted, the standard measures would have been:- "Let the foot be divided into 10 inches; The inch into 10 lines; The line into 10 points; Let 10 feet make a decad; 10 decads one rood; 10 roods a furlong; 10 furlongs a mile. " If you want to read the whole transcript of the report, you can find it here.. http://tinyurl.com/mc7zlz Best wishes, Ian Ian W Wright Sheffield UK -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metricks - Mill-Drill needs steppers and servos?
Jack wrote <<< You sure its about 2.54mm and not 2.55mm? My thumb is maybe wider than yours this illustrates one of the sillinesses of our use of the metric system - 1 inch is a good approximation but 2.54mm is not an approximation, its a direct conversion from an inch and accurate to 4 thou. This way of working leads to many similarly silly measurements appearing in the real world. In a previous post I mentioned bricks - in the previously Imperial world of the UK, their size was set such that the brick plus a normal thickness mortar joint below and to one side would form a convenient modular size. Only now, after almost 40 years, are bricks readily available in truly metric sizes but, while that is good for new-builds, they don't blend in with older brickwork and so you see walls with ugly infill panels where the mortar joints are almost as wide as the bricks! The metric system also seems to encourage a sloppy attitude which can easily lead to errors - decimal points in the wrong place or verbal use of the wrong units. Being involved with a local primary school, I have a constant battle with both children and teachers to get them to understand precision. For some unknown reason, about half the British public would say 2.54 as two point fifty-four - you even hear such rubbish on TV quite regularly, particularly on children's programmes. When I hear this at school I always ask - right, well which is the bigger then, two point fifty-four or two point a hundred and twenty-five? Most times I just get a glazed look and complete lack of comprehension!!! This may be a pet peeve of mine but it is the kind of stupidity the metric system encourages that ultimately leads to things like shuttle disasters.. Having said that, I use the metric system all the time - except for my weight which is in stones and pounds, pounds and ounces for cooking, miles and furlongs for distance and miles-per-gallon for fuel economy although I do have to buy my fuel in Litres as, I guess, the fuel companies have worked out that a price rise of a penny-per-litre would not have the same shock effect and backlash as a rise of 4 1/2 pence-per-gallon ( I wonder, is the US liter different from the UK litre just as the US gallon is?) - oh, and its still cheaper to buy some types of steel rod in 'standard' Imperial sizes rather than metric. ;-) Best wishes, Ian --- Ian W Wright Sheffield UK -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metricks - Mill-Drill needs steppers and servos?
> > I have argued this with many German machinists and they always > > come back that metric is scientific measurement because it > is a part > > of the circumference of the world. That may matter to a > map maker but > > I don't > > That's very unscientific definition of metric system and > makes no sense in reality. I had to look this up. In wikipedia... "Historically, the metre was defined by the French Academy of Sciences as the length between two marks on a platinum-iridium bar, which was designed to represent 1⁄10,000,000 of the distance from the equator to the north pole through Paris." Which brings back memories of high school physics classes when we used the 40,000km as the circumference of the earth. And the current definition... "In 1983, it was redefined by the International Bureau of Weights and Measures (BIPM) as the distance travelled by light in free space in 1⁄299,792,458 of a second.[3]" I find it so much easier to measure distances with a stop watch rather than a tape measure ;) -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mill-Drill needs steppers and servos?
2009/6/12 Steve Blackmore > > Nahh - it's only inches But, as it's mainly cutting ply, laminate > and the odd Al sheet it's plenty good enough. > > 2 x 30mm wide belt, very high tension. A word of warning - The belt > tension is often more than the rest of the bearings/mounts can stand so > be careful there. Don't ask how I know that.. > > .. > One way to get good results with belts is to strobe them at full speed > and watch the first tooth engaged by the pulley. If the tooth is trying > to climb out, it's too slack. That fault often shows after a time as a > line of wear on the pulley teeth near the crest, but it's a bit late > then. > > > > >We thought about a way to get rid of that last flex and thought about > >some mechanism which measures the tension dynamically and tweaks an > >idler pulley accordingly. > > I put idlers on that one initially - caused bizarre resonance problems > at different speeds, best without if you can get the tension high > enough. > > Steve Blackmore There's another way to make a belt drive tight, have a look at http://www.youtube.com/watch?v=OdJoVh6DRPA It shows in the end how it's mounted. The stress/stretch factor on the belt this way is decent. I doubt the pat. pend though, I've seen it before and the company I order belts from even have special profiles for this setup. --S -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Servo tuning
> -Original Message- > From: Stephen Wille Padnos [mailto:spad...@sover.net] > Sent: Friday, 12 June 2009 2:51 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Servo tuning > > Jon Elson wrote: > > >Frank Tkalcevic wrote: > > > > > >>I have a pair of Yaskawa servo motors and drivers > (servopaks) to run > >>my lathe. They are the Speed/Torque variety and I'm > driving them with > >>a mesa analog driver, providing +/-10v. I'm unsure of how > to tune my > >>system, as the servopaks have a collection of tuning > parameters (and > >>auto-tune procedure), as well as the tuning of emc. I'm > struggling to > >>get the system stiff, and stop the small oscillations at > the same time. > >> > >>Can anyone suggest a plan of attack? How should I be > setting up the > >>servopaks? > >> > >> > >> > >There is a setup program available from Yaskawa. In their > manual, they > >give details of how to make a cable to connect a PC's serial port to > >their serial connector. No converter is needed, just the correct > >wiring. > > > >Since the control loop is handled by the Servo Pak, you need very > >little gain (P) and the same for I and D. You specify velocity from > >EMC, and the Servo Pak does it exactly. > > > > > Note that FF1 should be 1.0, if your DAC scaling is correct. > Add a very small P and maybe I and D (even smaller), and you > should be good to go. > This is assuming that you use them in velocity mode, not > torque mode. > For torque mode, you should need FF2 to be 1.0 (I think), but > I'm not sure what else needs to change. Thanks for the tips. Making the FF1 more significant meant I could reduce P,I and D. It's still not perfect, but I'll be able to be in the same room as it now while it is idling. -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Metric?
Douglas Pollard wrote: .. > But what difference does base 10 make to a guy running a cnc machine?? Let me answer with a question: what's easier to add, 3/8 + 11/32 or 0.375 + 0.34375? While this is CNC related mailing list, standards are critical for clear communications between interested parties. Some of us still remember time before the Internet and how hard it was to "talk to anybody" around the world. Whole world adopted TCP/IP internet protocol to connect computers over different media. Many standards were adopted from inventions coming from USA, computer standards (software and hardware), aviation, etc. but for God's sake drop this silly awkward measuring system that majority of population doesn't understand and go metric. I challenge you to ask 5th grade student what's the difference in thickness between gauge 22 copper wire and 12 gauge steel wire. > I'm sure it makes a difference from some scientific perspective but we > are making parts. It seems to me that it is the job of engineers, > designers and scientist to design them. After that his job is to Metric system is simply easier to understand because it's a decimal system. God gave us 10 fingers for use with a decimal system not 12. Everybody with 2 or 3 years of basic schooling can understand it. Machinists use mm (millimeters) with precision in 1/1000's of mm in general. Carpenters use centimeters (1cm=10mm) in my experience, and so do cabinet makers and house builders. It's the level of accuracy you need that determines which one you use as a base, mm or cm. What you don't see perhaps is the simple relationship between basic units of weight, volume, mass, power, energy, etc. 1 cubic meter of water weights 1 ton = 1000kg. 1L = 1kg = 10cm^3 of water. Other relations are easy too but I won't go into that here. Same thing no matter where in the world you go, including ISS. > discribe in the best possible way and dimension and draw them in such a > way that we as machinists, can make them. It is not important how he > would like to do it but only that he can get his ideas across to the > person who is going to make the parts. The moment the communication > becomes about the designer's preferences the connection is lost quality > goes down and cost goes up.No matter how great the engineer if he > does not comunicate in the best possible way the machinist or machine > operators all need to go get a degree. It is all about communication and > what ever system communicates the best is the answer. This is at least > how it seems to me. The burden is on the communicator to make his wants > understood. A qualified machinist should be able to look at a drawing > a few minutes and only look back at the drawing now and then to check a > dimention. I feel I have worn this subject out. I'm sure others do not > see this from my point of view at all and so this is only my > perspective.Doug > Some of us adapted to different culture, language, technologies, etc. I don't mind doing that if it takes me a meter ahead but dragging feet is not. That's life. -- Rafael -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
