Hi, D CUSTOMS

I'm sorry this has turned into a Mathmatical/Threory Class.

For Sure You Can Calibrate any Axis without knowing anything about the BallScrew Pitch or Reduction/Gearing.

Mach shows on it's DRO's to .0001 ackuracy, But in fact it retaines a .000000000000001 "15" dec. point's or so I Think, Precision Accuracy (The Remainder is "Applied" to the "Closest Step Per" Unit as setup in Motor Tuning.

In my last post I was trying to help you find out If you have Backlash Issues Also.

OK

Using the 20,967 that's Giving you a 1 inch move.

Move the axis "pos" 1 inch "Pre-Load", (It takes backlash out, If there is any.

Then zero the indicator and your linear scale DRO, Move in the pos dir 1 inch.

Dose the indicator show a 1 inch move. ? _____________

Dose the linear scale "DRO" show a 1 inch move. ? _______________

Dose the Mach show a 1 inch move. ? ______________

Now move the other direction 1 inch.

Does the indicator move back to Zero, ? _________

Dose the linear scale "DRO" show a 1 inch move. ? __________

Dose the Mach show a 1 inch move. ? ________

If the indicator dosen't return to 0, The distance to go is "Backlash".

Thanks, Chip