Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: cms on October 06, 2011, 02:06:14 PM

Title: calibration probems
Post by: cms on October 06, 2011, 02:06:14 PM

We are attempting to repeat the same part located on a fixture using a router and Mach 3. It seems that we are getting "creep" in the "0" location with each run of the program. Is this a program problem or  a setting in Mach 3? Can someone please help?

Title: Re: calibration probems
Post by: Hood on October 06, 2011, 03:22:38 PM

Most likely you are losing steps, try reducing the Accel; and Velocity by half to test.
Hood

Title: Re: calibration probems
Post by: cms on October 13, 2011, 04:48:42 PM

This helped some, but we are seeing a change in "z" each time we run our program of about .025". Is there something in the code or in the offsetts in Mach 3 that would cause this?

Title: Re: calibration probems
Post by: RICH on October 13, 2011, 05:04:19 PM

Still sounds like your missing steps, reduce by 50 % again and see how it goes. Make sure he steps per unit are correct. If it's not an accel or velocity problem have a hard look at the z axis for mechanical problems.
RICH

Title: Re: calibration probems
Post by: rcaffin on October 14, 2011, 05:21:37 AM

Quote from: cms on October 13, 2011, 04:48:42 PM

but we are seeing a change in "z" each time we run our program of about .025".

Check tightness of collet holding cutter.
Been there ...

Cheers