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Author Topic: Rotational feedrate problem  (Read 8232 times)

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Offline rcrabb

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Rotational feedrate problem
« on: January 07, 2007, 09:55:24 PM »
I'm having a problem with with my feedrate on my rotational axis. I have .0001 in the rotational Dia DRO. The feed rate seems ok untill a line of Gcode has no Z move. Then the feedrate goes too high and my motors stall. If I enter the actual diameter of the piece in the DRO the feedrate stays constant for a while then ramps up periodicaly. What am I doing wrong here?
Ryan

Offline Chaoticone

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Re: Rotational feedrate problem
« Reply #1 on: January 07, 2007, 10:08:51 PM »
In config, toolpath, do you have your use diameter for feedrate checked?
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Offline rcrabb

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Re: Rotational feedrate problem
« Reply #2 on: January 07, 2007, 10:10:27 PM »
Yep, its checked
Ryan

Offline Chaoticone

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Re: Rotational feedrate problem
« Reply #3 on: January 07, 2007, 10:15:46 PM »
How about in config, slave axis. Are any axis slaved?
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Offline rcrabb

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Re: Rotational feedrate problem
« Reply #4 on: January 07, 2007, 10:18:23 PM »
Nothing slaved
Ryan

Offline Chaoticone

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Re: Rotational feedrate problem
« Reply #5 on: January 07, 2007, 10:21:12 PM »
I got to take a nap soon. Can you post your xml and the code with notes of where you are having problems? What version of Mach are you running? Mach 3 version 2.0.0??


Brett
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Offline rcrabb

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Re: Rotational feedrate problem
« Reply #6 on: January 07, 2007, 10:31:01 PM »
Mach Version 2.0.031.

I enter .0001 in the rotational diamenter DRO and the rotational feedrate is good untill a line code has no Z move.

If I enter a Diameter of 1.25 in the DRO the feedrate ramps up about every 20th line.
Ryan

Offline Chaoticone

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Re: Rotational feedrate problem
« Reply #7 on: January 07, 2007, 10:55:01 PM »
Forgive me, I will have to look closer in the morning. Are you running in single block or doing a feed hold while it is runnig this program? If so, try it running straight through with neither feed hold or single block. They had a few bugs in the past but I think they have been fixed.

Brett
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Re: Rotational feedrate problem
« Reply #8 on: January 08, 2007, 07:51:36 AM »
Could you please post an example of the code that is giving you trouble ?
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Offline rcrabb

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Re: Rotational feedrate problem
« Reply #9 on: January 08, 2007, 08:18:56 AM »
Brian,

Here is an example of the code giving me trouble.
Ryan