Splint, Unless I am missing something, your numbers are flawed for the X.
1/ If the x axis has the same motor and using the same pitch screw, (you did not indicate any different) the ratio will still be still be the same. A 11.4mm pitch and 18 teeth do not automatically come out at 205.2mm/rev, that is a circumference amount and not a linear amount.
If you have the same pitch screw, the feed rate at 4000 rpm would be 666mm/min.
What are you using on the Y & Z if not belt and pulley?
I could be proved wrong.
Al.
__________________
CNC, Mechatronics Integration and Machine Design.
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E. |