[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

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread Viesturs Lācis
2013/2/3 EBo e...@sandien.com: 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

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 e...@sandien.com: 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

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread andy pugh
On 3 February 2013 13:39, EBo e...@sandien.com 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

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 e...@sandien.com 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

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread andy pugh
On 3 February 2013 15:39, EBo e...@sandien.com 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

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 e...@sandien.com 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

[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

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

2013-02-03 Thread andy pugh
On 3 February 2013 18:30, David Armstrong dave...@outlook.com 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,

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 dave...@outlook.com wrote: i now have a requirement to look at both grinding and cam turning on my small lathe It is

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

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 steve...@newsguy.com Date: To: dengv...@charter.net,'EMC

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 e...@sandien.com 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

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

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 at

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 EMC, but

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 been executed.

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 EDM,

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 to get the time.

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 move

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 jmkasun...@fastmail.fm Reply-To: EMC developers emc-developers@lists.sourceforge.net To: EMC developers emc-developers@lists.sourceforge.net Subject: Re: [Emc-developers] custom EDM

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 jmkasun...@fastmail.fm Reply-To: EMC developers emc-developers@lists.sourceforge.net To: EMC developers emc-developers@lists.sourceforge.net

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 would be,

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.

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 jmkasun...@fastmail.fm Reply-To: EMC developers emc-developers@lists.sourceforge.net To: EMC developers

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 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: On

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

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 jmkasun...@fastmail.fm Reply-To: EMC developers

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

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

[Emc-developers] From Paolo

2013-02-03 Thread Gene Heskett
Is there now any interest in this announcement? Return-Path: rtai-boun...@rtai.org [...] From: mantega...@aero.polimi.it To: r...@rtai.org 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:

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread Viesturs Lācis
2013/2/4 sam sokolik sa...@empirescreen.com: 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

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 zoom-in

Re: [Emc-developers] custom EDM configuration questions

2013-02-03 Thread Viesturs Lācis
2013/2/4 Chris Morley chrisinnana...@hotmail.com: 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

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? Yes Peter I