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Messages - bob.mullikin

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1
General Mach Discussion / Re: G31 Probing problem
« on: March 30, 2010, 03:32:18 AM »
Here's the newest Gcode file.

2
General Mach Discussion / Re: G31 Probing problem
« on: March 30, 2010, 03:29:48 AM »
Here's an update on this.  The G31 probing code still does not work consistently.  I've reworked the Gcode, and I even wrote it in a VB Macro.  In each case the end result is the same.  It will go along for a while running the G31 probing routine, but then it totally fails.  I've checked the variables for x and y and they are present, yet it won't probe.  After doing the "HERKY JERKY" for 8 to 16 cycles, it starts working again.  I'm beginning to think this is a Mach3 problem.  Anyone have an idea that I might try?

Bob

3
General Mach Discussion / G31 Probing problem
« on: March 15, 2010, 03:48:33 AM »
Hello, I'm hoping to get some help.  I'm having a hard time with a g31 probing routine.  This is a macro and gcode that originally was posted by Terry (Vmax549).  It's a internal polar aray routine that probes the inside of a part in the x and y direction.  I modified it to be able to specify a Z depth amount and Z depth step amount so it would probe down say an inch or two in what ever step size i specify.  It cycles just fine for a while, but at some random point as it completes a step or more in z direction the G31 command doesn't send the probe out more than a tenth or so, it just jerks in short steps for a cycle or two or sometimes more and then it starts working again.  I've tried changing to slower feed rates, and everything else I can think of, but I"m out of ideas as to what could be causing this.  Sometimes it's around 40 G31 calls before it fails and other times it has been several hundred.

I updated to the latest lock down version of Mach3 today to try to solve this, but it didn't change anything.

I've included the files for anyone who would like to take a look at this.


4
General Mach Discussion / Re: Help Mach turn OD cut arc
« on: March 01, 2010, 06:12:24 PM »
Rich, it's Mach3 Turn in diameter mode.

I made some headway.  I turned backlash comp off and it worked perfect !!!  So, it seems that the problem is related to backlash compensation.

Bob

5
General Mach Discussion / Re: Help Mach turn OD cut arc
« on: March 01, 2010, 03:24:12 PM »
The X DRO says it's at .5" but the tool is closer to center. Like  .3" or .4" sometimes.  It seems, the more cuts it makes the more variance there is.  I was wondering if it was a stepping problem, but i"m not just exactly sure how to test for that.

6
General Mach Discussion / Help Mach turn OD cut arc
« on: March 01, 2010, 01:39:37 PM »
I hope someone can help me with this.  I think I have checked everything under the sun.  I'm running V3.042.029

Here's my problem.  I'm simply trying to turn a ball end on a 1/2" shaft.  I plugged the information into the wizard.  When I run the routine, what happens is my X axis gradually changes as the process operates.  X is set at .5" at the start.  This is verified.  After it makes 3 or 4 passes my X axis moves toward 0".  It doesn't seem to change in a set amount. 

I've checked the steps per inch over and over.  I've checked the backlash.  I've used a dial indicator and cycled the X 20 times to verify it does not change.  I've tried this in CV mode and in stop mode.  I've looked at the code created by the wizard and don't see anything that would cause a change my X calibration.

What am I missing here?

Bob

7
Mach SDK plugin questions and answers. / Re: Probing g31 file question
« on: February 22, 2010, 05:06:38 PM »
Perfect!  Thank you.

8
Mach SDK plugin questions and answers. / Probing g31 file question
« on: February 22, 2010, 02:52:46 PM »
I'm doing some probing.  Things are working fine, but what needs to be done to get the axes (X,Y,Z) listed along with the numbers in each column of the output file?   Have I missed a setting?

Thanks for any help
Bob

9
General Mach Discussion / Re: G31 probing via array macro.
« on: February 22, 2010, 02:48:06 PM »
Hey Terry, I checked out your probing arrays today.  They are very cool.  I'm one of those people who is planning to do cylinder head port work.  I have several questions.  First, my g31 code output file doesn't list the axes like your example did.  I just get three columns of number.  Is there a setting I have missed?  Second, how would I incrimentally move down a port in Z?  Is this something that must be done manually?

10
General Mach Discussion / Re: Threading problem
« on: August 20, 2009, 04:13:07 PM »
Yep, it's licensed.  :)

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