Hello Guest it is September 20, 2019, 09:25:12 PM

Author Topic: Mach3 going off course of cut  (Read 9867 times)

0 Members and 1 Guest are viewing this topic.

Offline ger21

*
  • *
  •  6,288 6,288
    • View Profile
    • The CNC Woodworker
Re: Mach3 going off course of cut
« Reply #10 on: December 09, 2006, 08:46:58 AM »
Is your IJ mode set to absolute? It ran fine on my PC ( simulation mode) with IJ set to incremental. Also, only your first G42 has a D1. Every G42 needs a D1, and you also need the tool diameter for tool1 set in the tool table.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html

Offline Graham Waterworth

*
  • *
  •  1,882 1,882
  • Yorkshire Dales, England
    • View Profile
Re: Mach3 going off course of cut
« Reply #11 on: December 09, 2006, 09:08:59 AM »
His program has a G91.1 in it, also D1 is global as far as I know.

Graham.
Without engineers the world stops
Re: Mach3 going off course of cut
« Reply #12 on: December 09, 2006, 01:11:54 PM »
Ok here is something else to add to the mix..When I run it without a tool being selected...TOOL 0...it runs just fine ,no problem except there is no offset..When I put in TOOL 1...that is when it goes off...Graham ,this is what was throwing me for a loop on that wing rib that you helped me on..It finally worked properly with the tool offset when I put in a P.0625 at each and every G41 down the list..Putting in the TOOL1 is what is messing this up

ger21...I checked the IJ mode..yes it is set to absolute ...I have the tool diameter set at .125

Graham..what is the G91.1 and how is it getting in there,if it not suppose to be there?

Offline Graham Waterworth

*
  • *
  •  1,882 1,882
  • Yorkshire Dales, England
    • View Profile
Re: Mach3 going off course of cut
« Reply #13 on: December 09, 2006, 01:45:57 PM »
I don't get it, it works fine here.

Tool 1 offset are set to :-

dia = .125
length =0
wear dia = 0
wear len =0

Here is the mach path and the code I used to do it.

« Last Edit: December 09, 2006, 01:56:39 PM by Graham Waterworth »
Without engineers the world stops

Offline Chaoticone

*
  • *
  •  5,589 5,589
  • Precision Chaos
    • View Profile
Re: Mach3 going off course of cut
« Reply #14 on: December 09, 2006, 02:05:41 PM »
Michael,
     What version are you using?

Graham,
    What version does it do good on for you?
;D If you could see the things I have in my head, you would be laughing too. ;D

My guard dog is not what you need to worry about!
Re: Mach3 going off course of cut
« Reply #15 on: December 09, 2006, 02:20:30 PM »
I am running R1.84.00...When I simulate the run,that is the only thing I am changing..The Tool 1 ..or...Tool 0..I created a new modified code by inserting the P.0625 at each G41..I am going to try that now..Will let you know..Graham..when you ran my original tap file,did you put in a TOOL ..?or was it set to TOOL 0      ..?  also when you rewrote the code, you took out the drill points..which is fine,because I don"t think that has anything to do with it..And on my original tap,the drill points and the holes ran fine until it got out on to the outside profile..which is weird because it will start just fine on the profile, maybe a third of the way and then off it goes..and when it goes off,it is where there is  a straight line and then it hits a curved line..Right where the two lines meet..But the profile was drawn in Autocad using a closed polyline,so there is no gap there..Michael
Re: Mach3 going off course of cut
« Reply #16 on: December 09, 2006, 03:21:18 PM »
Well..It didn't work with the G41 all having P.0625...Tool 0...It did the crazy course again...Here is the screen shot and the modified tap file with all G41 P.0625 ...in it..If you are able to make my file run on your machine,then I must have some bug in mine..What gets me is I have two computers running this with the same results..Computer one is the one inside that I design on and one outside in the shop where the mill is...same results...I must have some bug or something...

Offline ger21

*
  • *
  •  6,288 6,288
    • View Profile
    • The CNC Woodworker
Re: Mach3 going off course of cut
« Reply #17 on: December 09, 2006, 04:10:48 PM »
His program has a G91.1 in it, also D1 is global as far as I know.

Graham.


Graham, the D1 didn't appear to be gloabal for me. Only the first circle was comped.

Michael, I think there are some comp (G41/G42) bugs in 1.84. Try it with the latest version.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html

Offline ger21

*
  • *
  •  6,288 6,288
    • View Profile
    • The CNC Woodworker
Re: Mach3 going off course of cut
« Reply #18 on: December 09, 2006, 04:18:40 PM »
Graham, I just checked and the D1 is not modal for me. Try this. Use .25 for the diameter of tool 1.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html

Offline Graham Waterworth

*
  • *
  •  1,882 1,882
  • Yorkshire Dales, England
    • View Profile
Re: Mach3 going off course of cut
« Reply #19 on: December 09, 2006, 06:12:03 PM »
Apologies Gerry, you appear to be right, that is a major problem and needs to be corrected.

The repercussions of it are huge. For one it meens that any form of subroutine using external D command are out.

I think this needs pointing out to Art and Brian.

Graham.

Without engineers the world stops