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Topics - bobkeyes

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1
General Mach Discussion / After homing axis don't back off Switches
« on: December 13, 2013, 09:41:24 PM »
I've never had much problem with my mini mill and Mach until now!

When I home the machine each axis does not back off of the limit switch and the DRO's don't go to zero. The problem just started today. I have checked and everything seems to be OK.

3 limits wired to 3 inputs. Using each switch as home and limit.

Does anyone know how I have turned this function off??

Thank you for any help you can give.

Bob Keyes

2
General Mach Discussion / Spindle Speed Control
« on: March 22, 2009, 11:43:21 PM »
Hello All,

I am trying to get program speed control for a Chinese mill. The mill presently uses a potentiometer. I have a CNC4pc Speed control board and have it working on PWM. Here's my problem. I cannot find the right settings to give me good speed control. I can get it tuned from 500 to 2000 rpm and then from 2000-4000 is way off. If I get it tuned from 2000-4000 then the 500-2000 is way off. Also, I am not sure what function the "Increment" setting plays and I can't find anything in the manual that explains it. But, it does effect the speeds.

Can anyone help me with this? I am beginning to get frustrated after a week of "cut and try".

Thanks for your help in advance.

Bob Keyes
Kentucky

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