Re: [Emc-users] EMC the right choice for us?

2008-07-03 Thread John Thornton
Sounds like a normal renashaw type of probe you have. When probing your first touch is at a higher speed then the second touch is slower to get exact position. The results can be stored in a file. Look at gridprobe.ngc in your nc_files folder for an example. John On 3 Jul 2008 at 9:47, Kai S

Re: [Emc-users] EMC the right choice for us?

2008-07-03 Thread Kai Schaeffer
Hi every1, Thank you for all the response to my question. So this is a very active community. As our ERP system we have chosen ADempiere (http://www.adempiere.com). There we have a very active community, too (and we are an active part of it ;-) ). I know how valuable such a community is for an

Re: [Emc-users] EMC the right choice for us?

2008-07-02 Thread Jon Elson
Kai Schaeffer wrote: > Andre' Blanchard schrieb: What does "it wouldn't be trivial" mean in man-months? Actually, I think those were my words. EMC doesn't currently have a feature to scan a surface and then modify the meaning of a G-code file. There was some discussion once about a general t

Re: [Emc-users] EMC the right choice for us?

2008-07-02 Thread Jon Elson
Andre' Blanchard wrote: > > It kind of sounds like the current system may be running multiple machines > off one computer, some type of drip feed DNC. > It is highly desirable to NOT do this anymore. 1970's technology, only the tiniest step above paper tape! > > >- Measurement of the sur

Re: [Emc-users] EMC the right choice for us?

2008-07-02 Thread Kenneth Lerman
One possible solution to the probing issue is to write a special kinematics that interfaces with probing. With the kinematics turned off, probe the sheet at the desired resolution. A special (new) command would write the X, Y, Z coordinates of each probed point to the kinematics. When the kinem

Re: [Emc-users] EMC the right choice for us?

2008-07-02 Thread Leslie Newell
I have to admit I don't have a vast amount of experience of the internals of EMC but it shouldn't be difficult to probe the whole sheet then generate a correction matrix that is used before the G-code is generated. Probing a large sheet would be very time consuming. Do you need this for engravi

Re: [Emc-users] EMC the right choice for us?

2008-07-02 Thread Andre' Blanchard
At 03:29 PM 7/2/2008, you wrote: >Andre' Blanchard schrieb: > >> > > > - Measurement of the surface for a Z-correction > > > > > probing? > > > >>> At the beginning of each program we measure the Z-profile of the surface > >>> of the sheet. This profile is used to correct

Re: [Emc-users] EMC the right choice for us?

2008-07-02 Thread Kai Schaeffer
Andre' Blanchard schrieb: >> >> Why would it run out of lines? It should always have a buffer >> of interpreted G-code to read ahead. I did some experiments >> with the relatively new G64 P command to set the allowable >> tolerance during contouring. I was doing 588 blocks of G-code a >> sec

Re: [Emc-users] EMC the right choice for us?

2008-07-02 Thread Kai Schaeffer
Hi Kirk, You are asking very good questions. :-) Kirk Wallace schrieb: > Is this document also valid? > > http://www.datron.de/fileadmin/media/pdf/Englisch/CNC/CNC_Large-format_GB_I_V10.pdf > Yes it is. > Here are some thoughts that come to mind: > > How much of the conversion do you want to

Re: [Emc-users] EMC the right choice for us?

2008-07-02 Thread Ray Henry
On Wed, 2008-07-02 at 09:21 -0700, Kirk Wallace wrote: > On Wed, 2008-07-02 at 12:17 +0200, Kai Schaeffer wrote: > > Hello EMC community, > > > > I am new here and I am dropping in with a longer question. > I > prefer to keep EMC2 lean, so I tend to use C to make HAL components to > add features

Re: [Emc-users] EMC the right choice for us?

2008-07-02 Thread Andre' Blanchard
At 12:36 PM 7/2/2008, you wrote: >Kai Schaeffer wrote: > > > >>There's also an issue with the speed at which the interpreter can > >>process and output G-code lines, but others know more about this... > >> > > > > Good point. What happens if the system is running out of lines? Does the > > machine

Re: [Emc-users] EMC the right choice for us?

2008-07-02 Thread Jon Elson
Kai Schaeffer wrote: > > This sound not so bad. Actually we need this speed only for the rapid > movements. For the cutting speed we have to max. speed of 5m/min. That > would mean 0.02mm per cycle. I guess we could work with this. Or what do > you think? > Depending on thew hardware interface

Re: [Emc-users] EMC the right choice for us?

2008-07-02 Thread Kirk Wallace
On Wed, 2008-07-02 at 12:17 +0200, Kai Schaeffer wrote: > Hello EMC community, > > I am new here and I am dropping in with a longer question. Sorry for > this, but we are looking for a machine controller and this might help us > to decide if this is the right place for us. So here is the story:

Re: [Emc-users] EMC the right choice for us?

2008-07-02 Thread Christof Klaiber
Am Mittwoch, den 02.07.2008, 13:44 +0200 schrieb Kai Schaeffer: > Stored Program Control (in German called SPS). The guys from abroad call it "PLC" (Programmable Logic Controller) > Perhaps it's not so common outside Germany... :-) Oh - I've seen some here and there... ;-) And I'm also glad to s

Re: [Emc-users] EMC the right choice for us?

2008-07-02 Thread Chris Radek
On Wed, Jul 02, 2008 at 01:47:51PM +0300, Anders Wallin wrote: > Writing a simple script in python to estimate the milling time would be > straightforward. AXIS does a simple milling time estimate. It is on the File/Properties window with some other useful information about the loaded program.

Re: [Emc-users] EMC the right choice for us?

2008-07-02 Thread Kai Schaeffer
Hi Andreas, thank you for your quick answer... >> - Fast movements (up to 16m/min, we are doing HSC) >> > > You must find a motherboard+cpu combination that has good real-time > performance. I am running emc2 with a servo-thread rate of 4 kHz, during > that 250 us your machine would move 0.

Re: [Emc-users] EMC the right choice for us?

2008-07-02 Thread Anders Wallin
> - Servo motors yes, depending on what servo-interface you choose the drives can be controlled either with a -10..+10V analog voltage or with PWM+direction signals. Newer interfaces such as canbus or sercos are not supported afaik. > - Fast movements (up to 16m/min, we are doing HSC) You must

[Emc-users] EMC the right choice for us?

2008-07-02 Thread Kai Schaeffer
Hello EMC community, I am new here and I am dropping in with a longer question. Sorry for this, but we are looking for a machine controller and this might help us to decide if this is the right place for us. So here is the story: We are a manufacturer of customized front panels - specialized on