Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread Chris Morley
> > Sure, you can say "an EDM will never make a spindle synchronized > > move", but changes to the motion module need to do sane things > > regardless of what kind of a machine is being controlled. > > > > > > What about different motion modules optimized different classes of > applications? >

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread Viesturs Lācis
2013/2/4 Chris Morley : > > >> If anyone needs translation from Russian: >> The way this works is a g-code filter, which generates a "reverse" >> g-code for a particular g-code line and inserts it _before_ this >> particular g-code line with a "/" symbol in front of it. >> It seems like a change in

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread Chris Morley
> If anyone needs translation from Russian: > The way this works is a g-code filter, which generates a "reverse" > g-code for a particular g-code line and inserts it _before_ this > particular g-code line with a "/" symbol in front of it. > It seems like a change in Axis GUI script to redefine "z

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread Viesturs Lācis
2013/2/4 sam sokolik : > Oh - and this is kinda interesting... > > http://www.youtube.com/watch?v=eTLs89YPtck > > Follow and translate the link in the description.. (interesting hack..) If anyone needs translation from Russian: The way this works is a g-code filter, which generates a "reverse" g-

[Emc-developers] From Paolo

2013-02-03 Thread Gene Heskett
Is there now any interest in this announcement? Return-Path: [...] From: mantega...@aero.polimi.it To: "r...@rtai.org" User-Agent: SquirrelMail/1.4.21 MIME-Version: 1.0 X-Priority: 3 (Normal) Importance: Normal X-PMX-Version: 5.6.1.2065439, Antispam-Engine: 2.7.2.376379, Antispam-Data: 2

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread TJoseph Powderly
EBo, your name rings a bell all the way back to Paul Corner EMC days, you been arounf here a long time i think btw: mydynac ( and RayHenry's) approach could not reverse even 1 unit of measure the 'adaptive speed' method could only reduce forward velocity , can not reverse at all there was no dw

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread EBo
Looking at the pictures I really love the PDP-8 in one of them... Thanks for the links! On Feb 3 2013 8:44 PM, sam sokolik wrote: > there was a guy on irc that converted an wire edm to linuxcnc using > adaptive feed. I thought it worked pretty well - he had posted > pictures > of stuff he had c

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread EBo
On Feb 3 2013 8:20 PM, TJoseph Powderly wrote: > On 02/03/2013 07:47 PM, EBo wrote: >> On Feb 3 2013 3:42 PM, Peter C. Wallace wrote: >>> On Sun, 3 Feb 2013, John Kasunich wrote: >>> Date: Sun, 03 Feb 2013 17:08:37 -0500 From: John Kasunich Reply-To: EMC developers To: EMC dev

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread EBo
Scott, Thanks. I will look at this when I get a chance. I may end up reworking an old Bezier spline driver module to straight step direction code if it comes to that. More later, EBo -- On Feb 3 2013 7:17 PM, Scott Hasse wrote: > For simple simker EDM I implemented reversing in a gco

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread sam sokolik
Oh - and this is kinda interesting... http://www.youtube.com/watch?v=eTLs89YPtck Follow and translate the link in the description.. (interesting hack..) sam On 02/03/2013 09:20 PM, TJoseph Powderly wrote: > On 02/03/2013 07:47 PM, EBo wrote: >> On Feb 3 2013 3:42 PM, Peter C. Wallace wrote: >>>

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread sam sokolik
there was a guy on irc that converted an wire edm to linuxcnc using adaptive feed. I thought it worked pretty well - he had posted pictures of stuff he had cut... his handle on irc was mdynac a post by him on cnczone.. http://www.cnczone.com/forums/463833-post31.html oh - found the pictures -

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread TJoseph Powderly
On 02/03/2013 07:47 PM, EBo wrote: > On Feb 3 2013 3:42 PM, Peter C. Wallace wrote: >> On Sun, 3 Feb 2013, John Kasunich wrote: >> >>> Date: Sun, 03 Feb 2013 17:08:37 -0500 >>> From: John Kasunich >>> Reply-To: EMC developers >>> To: EMC developers >>> Subject: Re: [Emc-developers] custom EDM co

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread Scott Hasse
For simple simker EDM I implemented reversing in a gcode loop sensing an analog input: http://code.google.com/p/sector67-sandbox/wiki/FrequencyBasedAnalogInput this was simple for my application, could stand to be refined somewhat, and would get complicated for anything but straight down/up. Sco

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread EBo
On Feb 3 2013 3:08 PM, John Kasunich wrote: > On Sun, Feb 3, 2013, at 03:59 PM, EBo wrote: > >> >> possibly, but a more principled hack would be to interface it at the >> point where it calls the low lever Catmull-Rom spline, and just >> evaluate >> it in reverse. I do not know how difficult that

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread EBo
On Feb 3 2013 3:42 PM, Peter C. Wallace wrote: > On Sun, 3 Feb 2013, John Kasunich wrote: > >> Date: Sun, 03 Feb 2013 17:08:37 -0500 >> From: John Kasunich >> Reply-To: EMC developers >> To: EMC developers >> Subject: Re: [Emc-developers] custom EDM configuration questions >> >> >> >> On Sun, Fe

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread Peter C. Wallace
On Sun, 3 Feb 2013, John Kasunich wrote: > Date: Sun, 03 Feb 2013 17:08:37 -0500 > From: John Kasunich > Reply-To: EMC developers > To: EMC developers > Subject: Re: [Emc-developers] custom EDM configuration questions > > > > On Sun, Feb 3, 2013, at 03:59 PM, EBo wrote: > >> >> possibly, but a

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread John Kasunich
On Sun, Feb 3, 2013, at 03:59 PM, EBo wrote: > > possibly, but a more principled hack would be to interface it at the > point where it calls the low lever Catmull-Rom spline, and just evaluate > it in reverse. I do not know how difficult that would be, but it would > require the ability to

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread EBo
On Feb 3 2013 1:59 PM, ed wrote: > Steve Stallings wrote: > > > > SNIP >> >> That would be Pete Gruendeman. We have not been >> in contact since about 2008, a year after the >> fest where he brought his setup. >> >> I keep intending to get back to making something >> more for EDM, but never seem t

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread EBo
On Feb 3 2013 1:02 PM, Chris Morley wrote: >> >> ... > > Michael did a proof of concept on jog-while-paused once. > You can see it on Utube. I just looked this up and the video does not move backward along the jogged path, but straight to where it was before. I would expect that with a wirefed

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread EBo
On Feb 3 2013 1:02 PM, Chris Morley wrote: >> >> > I don't know if the trajectory planner keeps the move history, if >> it >> > does then it might be possible to allow negative adaptive feed. >> >> Unfortunately negative feed would require major rework - there is no >> history of the path that has

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread ed
Steve Stallings wrote: SNIP > > That would be Pete Gruendeman. We have not been > in contact since about 2008, a year after the > fest where he brought his setup. > > I keep intending to get back to making something > more for EDM, but never seem to get the time. > > Pete's system did not use

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread Chris Morley
> > > I don't know if the trajectory planner keeps the move history, if it > > does then it might be possible to allow negative adaptive feed. > > Unfortunately negative feed would require major rework - there is no > history of the path that has been executed. (That has also been > discussed

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread Dave
Ebo.. Please let us know if you hear back from him. I know of several EDM machines that need new controls.. and the ability to back up seems to be really important for a wire edm. Thanks, Dave On 2/3/2013 2:04 PM, ebo wrote: > Sure. I would like to touch base with him. If I can not easily r

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread John Kasunich
On Sun, Feb 3, 2013, at 06:57 AM, andy pugh wrote: > On 3 February 2013 13:39, EBo wrote: > > > What I am trying to figure out is how to configure EMC so that the > > electronics can return a "pause" signal until it has burned burned > > through the requested material, > > Adaptive feed _might

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread ebo
Sure. I would like to touch base with him.  If I can not easily run it on emc then I will write a similar C program to drive it (probably via ANdroid) Sent from my Galaxy S®III Original message From: Steve Stallings Date: To: dengv...@charter.net,'EMC developers' Subject:

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread Steve Stallings
> -Original Message- > From: dave [mailto:dengv...@charter.net] > Sent: Sunday, February 03, 2013 10:43 AM > To: EMC developers > Subject: Re: [Emc-developers] custom EDM configuration questions > > On Sun, 2013-02-03 at 15:50 +0200, andy pugh wrote: > > On 3 February 2013 15:39, EBo wro

Re: [Emc-developers] cylindrical grinding and cam turning

2013-02-03 Thread Gene Heskett
On Sunday 03 February 2013 13:06:52 andy pugh did opine: Message additions Copyright Sunday 03 February 2013 by Gene Heskett > On 3 February 2013 18:30, David Armstrong wrote: > > i now have a requirement to look at both grinding and cam turning on > > my small lathe > > It is fairly straightfor

Re: [Emc-developers] cylindrical grinding and cam turning

2013-02-03 Thread andy pugh
On 3 February 2013 18:30, David Armstrong wrote: > i now have a requirement to look at both grinding and cam turning on my > small lathe It is fairly straightforward as long as you can make the spindle turn slowly enough for the X axis to be able to follow it. You also, obviously, need a spindle

[Emc-developers] cylindrical grinding and cam turning

2013-02-03 Thread David Armstrong
i now have a requirement to look at both grinding and cam turning on my small lathe looking around i notice shirline have done some coding in this respect to emc for cam grinding has anyone else looked or done the same . i'm looking at how to approach this or alternatives . my own fault i think

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread dave
On Sun, 2013-02-03 at 15:50 +0200, andy pugh wrote: > On 3 February 2013 15:39, EBo wrote: > > > Short answer is that decades ago I was shown a EDM head that could self > > retract a small distance > > If this is purely a die-sinking application then I suggest not > bothering with G-code at all.

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread andy pugh
On 3 February 2013 15:39, EBo wrote: > Short answer is that decades ago I was shown a EDM head that could self > retract a small distance If this is purely a die-sinking application then I suggest not bothering with G-code at all. Do the whole thing in HAL with a custom component, and maybe you

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread EBo
On Feb 3 2013 4:57 AM, andy pugh wrote: > On 3 February 2013 13:39, EBo wrote: > >> What I am trying to figure out is how to configure EMC so that the >> electronics can return a "pause" signal until it has burned burned >> through the requested material, > > Adaptive feed _might_ work, but there

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread andy pugh
On 3 February 2013 13:39, EBo wrote: > What I am trying to figure out is how to configure EMC so that the > electronics can return a "pause" signal until it has burned burned > through the requested material, Adaptive feed _might_ work, but there is no way in the current code to run the path bac

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread EBo
On Feb 3 2013 4:47 AM, Viesturs Lācis wrote: > 2013/2/3 EBo : >> Long story short I am looking at building a project that would >> likely >> work best with EDM. I am looking at building a custom EDM head for >> a a >> CNC router that is currently configured for 0.0001" step. >> >> What I am tryi

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread Viesturs Lācis
2013/2/3 EBo : > Long story short I am looking at building a project that would likely > work best with EDM. I am looking at building a custom EDM head for a a > CNC router that is currently configured for 0.0001" step. > > What I am trying to figure out is how to configure EMC so that the > elect

[Emc-developers] custom EDM configuration questions

2013-02-03 Thread EBo
Long story short I am looking at building a project that would likely work best with EDM. I am looking at building a custom EDM head for a a CNC router that is currently configured for 0.0001" step. What I am trying to figure out is how to configure EMC so that the electronics can return a "pa