Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: baldysm on August 01, 2007, 05:37:07 PM
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I'm having a problem with a 4th axis on my mill.
In the past, I would set everything up, and switch the cabling around on my Y and A axis and everything would work great. That worked since steps and ratios worked out were the same.
I upgraded to a precision lead screw on the Y axis, which has a different pitch on the threads.
The problem is that I can't move the A axis in a program. I can go into jog mode, and use the insert/delete keys and the A axis spins just like it is supposed to. So I know it's not a wiring problem or something, it's a configuration problem someplace. In jog mode, the displayed position of the A axis changes as well.
I went into my G-code program, did a find/replace and changed all the Y's to A's. Program runs, just the rotary table never moves.
Any ideas what could be wrong?
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If you select the "MDI" screen, and type a line of code in the manual data entry textbox, does the machine respond correctly to the commands?
William
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Thanks for the response William.
Figured it out. Brain fart on my part. For some reason, the steps per rev was 1/100 of what it should have been. So it was actually moving, just didn't look like it.
Think it's all fixed.
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Yep, I done that one too!!
William