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Messages - one_0_wonder

Pages: 1
1
General Mach Discussion / Re: Constant velocity
« on: October 23, 2007, 05:44:23 PM »
Art,

Installed 2.56.1 and ran my old jobs, they all ran OK.  Generated a wild test program for CV and it also worked fine.
As far as I'm concerned everything is working correctly again.

Regards,
Tom

2
General Mach Discussion / Re: Constant velocity
« on: October 23, 2007, 02:40:38 AM »
Thanks Art & Brian.  Will watch for next release.

Regards,
Tom

3
General Mach Discussion / Re: Constant velocity
« on: October 17, 2007, 07:39:19 PM »
Brian,
To go along with the drawing Ian provided on 9/28/07, I'm attaching a sample tap file that demonstrates the failure.

It's a sine wave that shows how CV drops out when angles are in a [CCW] direction.
Running at 70 ipm you see the speed moving right along during the first half of the wave, chord angles are [CW] and CV is working.
Now in the second half of the wave the chord angles are [CCW] and it slows way down, CV has dropped out.

In Config/General Logic Config:
    CV Dist Tolerance = 0.01
    Stop CV on angles > 35 Degrees

Hope this will be useful to you.
Regards,
Tom

4
General Mach Discussion / Re: Constant velocity
« on: October 16, 2007, 07:37:25 PM »
Ian,

Your quite right that the CV works on CW angles but not on CCW angles.  I did the same tests that you performed in your post of 9/28/07 which answers my questions.  I have dropped back to version 2.42 which does not have the problem.  Most of the routing I do is in a CCW direction so I can't use the latest code until this if fixed.  Maybe Brian or Art will hear us and give a progress report.

Tom

5
General Mach Discussion / Re: where is my calibration.....
« on: September 29, 2007, 12:17:26 PM »
Coog,

Glad to hear you were able to get your numbers.

Tom

6
General Mach Discussion / Re: where is my calibration.....
« on: September 28, 2007, 06:17:42 PM »
Coog,

I think what you are looking for is on the (Settings Tab) screen.
Right above the Reset Button on this screen you'll find (AXIS CALIBRATION - STEPS PER UNIT).
That will guide you.

Regards,
Tom

7
General Mach Discussion / Re: Constant Velocity Changed Recently
« on: September 24, 2007, 10:21:55 AM »
OK, I'm back in business. 

For a guy that reads the Yahoo and Online Forum daily I sure skimmed over the answer to this.
I turned off (Stop CV on angles >) which smoothed out my run again.  For some reason I felt uncomfortable turning this off.

To verify sharp angles were not being rounded I installed my plotting attachment and ran a test object with sharp angles and long splines.
Ran this plot over itself 5 times with no deviation and all 90 deg corners looked square (used a magnifying glass).
Plot was run at 50 ipm so routing at 35 ipm should be fine.

Thanks TP and Stirling for your advice.  I'm afraid I was asleep at the keyboard on this one.

Regards,
Tom

8
General Mach Discussion / Re: Constant Velocity Changed Recently
« on: September 22, 2007, 02:07:13 PM »
Thanks for the information guys.

I'll install the latest codes then start tweaking the CV and see if I can get it to smooth out.
Will reply with my results but may be a little later, working a contest this weekend.

Tom

9
General Mach Discussion / Constant Velocity Changed Recently
« on: September 21, 2007, 02:27:00 PM »
Brian,

Noticed that CV has changed in one of the last few releases.
My CV was running smooth thru Rel 2.42 then I noticed it started acting like it was in Exact Stop mode.

Sorry I didn't catch it until Rel 2.48 so don't know which release between these 2 started the problem.
I've reinstalled the older release and it works fine.  I'm guessing a modification around the first part of September is where it started.

I've been running steppers on my router without any problems for the past 2 years.
Let me know if you need more information.

Thanks,
Tom

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