Messages

1

General Mach Discussion / Re: M3 and Dwell doesn't alway work

« on: February 08, 2015, 10:24:33 PM »

I was referring to money not bits with the couple hundred line.  What is weird is it will work fine, M3 will start the spindle and dwell for 10 sec for several calls.  Load another program and it will not even acknowledge it.  Then restart the computer or the Mach3 and it may work fine or it may not.  Any ideas?

2

General Mach Discussion / M3 and Dwell doesn't alway work

« on: February 08, 2015, 03:00:14 PM »

This problem just started, M3 for spindle on will not actually turn on the spindle and the dwell will not initialize either.  I have tried uninstalling and installing mach again.  I tried removing the extra characters in the M3.mts file.  Am I at a point of a clean install of Windows to clear this up? I have broken a lot of small bits now.  At least a couple hundred worth since this began.

3

General Mach Discussion / Re: Hesitates with tabs in profile toolpath

« on: November 02, 2014, 02:17:37 PM »

The finding was and is related to the Stop CV on angles >....

For some reason it only affects cutting in the direction I spoke of before.  I changed it to 180 and the problem went away with the tabs on circles.

4

General Mach Discussion / Re: Hesitates with tabs in profile toolpath

« on: December 29, 2013, 08:29:28 AM »

To add one more complexity to this.... I have found that the hesitation as previously discussed was between the G1 and G2 transition; however, it only does it when moving clockwise (looking down at the part).  Counter-clockwise works fine. 

5

General Mach Discussion / Re: Hesitates with tabs in profile toolpath

« on: December 05, 2013, 09:45:44 PM »

Gerry,
I would agree with you. I generated two toolpaths for a rectangle.  One profile path with 2 pass depths without tabs and one with 4 tabs.  Both ran flawless.  You are correct.  I was looking back through the problem tabs programs and they were always on an arc.  I misspoke (sorry mistyped) before, I started noticing it when I was cutting 3D puzzles to put together.  These always had tabs on the arcs.  The larger circle that the sample code above was for a lid.  It too was on an arc.  I can live with it but it is rather annoying.  Maybe Mach4 will have a solution for it.  Thank you for your time and answers with this.   It is greatly appreciated and does not go unnoticed.

6

General Mach Discussion / Re: Hesitates with tabs in profile toolpath

« on: December 05, 2013, 09:17:13 PM »

Gerry,
Unfortunately I have no other cam software to compare it against.  I can increase my accel to 90 before missing steps with the same velocity setting.  I saw many posts with people saying about troubles with v-carving and this problem.  I don't seem to be experiencing that, well at least I never noticed it. No problems with 3D work either.  I have noticed it with all profiles that have a tab though.  All my tabs I try to place them on straight lines.  The closest thing I have seen for an explanation for this is here from reply 30 through 33  http://www.machsupport.com/forum/index.php/topic,1724.msg11211.html#msg11211
I will generate code for a plain rectangle with a profile and a profile with tabs.  I will post back what I find.

7

General Mach Discussion / Re: Hesitates with tabs in profile toolpath

« on: December 05, 2013, 08:14:06 PM »

Stop CV on angles is 65.  Does not matter if it is enabled or not.  Same reaction. 

I think it is the transition between the G1 and G2.  Feed Rate Override does exacerbate it.  But I have been trying to find info you on the forum.  I have not seen any problems like a lot of the other threads.  I have only had problems with tabs on profile cuts.  My velocity is 500 and accel is 25.  I may play with the accel some more
 

8

General Mach Discussion / Re: Hesitates with tabs in profile toolpath

« on: December 05, 2013, 07:05:34 PM »

Ok, on the settings page I have checked that CV feedrate is off.  I have tried with both the CV controls on and off in the general config page.  It is occurring when Z ramps back down to Zero or directly after, like the 4th & 5th lines below
4th & 5th lines  here
N300G1X20.9065Y20.4105Z0.3750
N310G1X21.0172Y20.2901Z0.3750
N320G1X21.1280Y20.1696Z0.3750
N330G1X21.3429Y19.9229Z0.3750
N340G2X24.2500Y12.0000I-9.3429J-7.9229
4th & 5th lines  here
N450G1X20.9065Y20.4105Z0.0667
N460G1X21.0172Y20.2901Z0.1000
N470G1X21.1280Y20.1696Z0.0667
N480G1X21.3429Y19.9229Z0.0000
N490G2X24.2500Y12.0000I-9.3429J-7.9229

9

General Mach Discussion / Re: Hesitates with tabs in profile toolpath

« on: December 05, 2013, 05:07:43 PM »

It had already tried turning off the CV controls and my look ahead lines are at 200.

10

General Mach Discussion / Hesitates with tabs in profile toolpath

« on: December 04, 2013, 10:41:20 PM »

I think I know the answer to this but I just want to make sure first.  I have the current Mach3 release.  I use Aspire for CAM.  I output toolpaths with the Mach2_3_ATC_Arcs_inch.pp.  Whenever I select add tabs to toolpath it adds extra points on each pass depth cut instead of the one that needs it.  This causes a jerking that is not noticeable until you get over 125 ipm.  Examples next and question below.

Example code with tabs
N190X0.0000Y0.0000F100.0
N200G00X1.4486Y5.7766Z2.7500
N210G00X1.4486Y5.7766Z1.0000
N220G1X1.4486Y5.7766Z0.3750F20.0
N230G1X1.2878Y6.0577Z0.3750F100.0
N240G1X1.2111Y6.2003Z0.3750
N250G1X1.1344Y6.3430Z0.3750
N260G1X0.9887Y6.6322Z0.3750
N270G2X-0.2500Y12.0000I11.0113J5.3678
N280G2X12.0000Y24.2500I12.2500J0.0000
N290G2X20.6786Y20.6454I0.0000J-12.2500
N300G1X20.9065Y20.4105Z0.3750
N310G1X21.0172Y20.2901Z0.3750
N320G1X21.1280Y20.1696Z0.3750
N330G1X21.3429Y19.9229Z0.3750
N340G2X24.2500Y12.0000I-9.3429J-7.9229
N350G2X12.0000Y-0.2500I-12.2500J0.0000
N360G2X1.4486Y5.7766I0.0000J12.2500
N370G1X1.4486Y5.7766Z0.0000F20.0
N380G1X1.2878Y6.0577Z0.0667F100.0
N390G1X1.2111Y6.2003Z0.1000
N400G1X1.1344Y6.3430Z0.0667
N410G1X0.9887Y6.6322Z0.0000
N420G2X-0.2500Y12.0000I11.0113J5.3678
N430G2X12.0000Y24.2500I12.2500J0.0000
N440G2X20.6786Y20.6454I0.0000J-12.2500
N450G1X20.9065Y20.4105Z0.0667
N460G1X21.0172Y20.2901Z0.1000
N470G1X21.1280Y20.1696Z0.0667
N480G1X21.3429Y19.9229Z0.0000
N490G2X24.2500Y12.0000I-9.3429J-7.9229
N500G2X12.0000Y-0.2500I-12.2500J0.0000
N510G2X1.4486Y5.7766I0.0000J12.2500
N520G00X1.4486Y5.7766Z2.7500

Example code with without tabs
N190X0.0000Y0.0000F100.0
N200G00X12.0000Y-0.2500Z2.7500
N210G00X12.0000Y-0.2500Z1.0000
N220G1X12.0000Y-0.2500Z0.3750F20.0
N230G2X-0.2500Y12.0000I0.0000J12.2500F100.0
N240G2X12.0000Y24.2500I12.2500J0.0000
N250G2X24.2500Y12.0000I0.0000J-12.2500
N260G2X12.0000Y-0.2500I-12.2500J0.0000
N270G1X12.0000Y-0.2500Z0.0000F20.0
N280G2X-0.2500Y12.0000I0.0000J12.2500F100.0
N290G2X12.0000Y24.2500I12.2500J0.0000
N300G2X24.2500Y12.0000I0.0000J-12.2500
N310G2X12.0000Y-0.2500I-12.2500J0.0000
N320G00X12.0000Y-0.2500Z2.7500

First off, should it react this way with the hesitation? I thought it read the next point so it would be able to maintain constant velocity?  If this is normal operation, is there a way to minimize it or do I just have edit the gcode?  I don't understand why they have them on every pass depth that does not require a movement in the Z axis.