MechMate CNC Router Forum - shaft coupling or timing pulleys?

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- - shaft coupling or timing pulleys? (http://www.mechmate.com/forums/showthread.php?t=3447)

coinhunter

Wed 13 July 2011 22:27

shaft coupling or timing pulleys?

In this moment I’m assembling my first CNC and I have some doubts about how to couple the motors to the axis, I’m going to build a small machine 70”x 40” x 20” and I have some 640 oz step motors and some screwballs to do it, however I wonder if it is OK to couple using shaft couplings or to use timing pulleys with some kind of relation, what is the best way to do it , thanks for your help.

KenC	Wed 13 July 2011 22:38

have you dig the forum yet?

coinhunter

Wed 13 July 2011 23:33

Yes, I did it.

KenC	Thu 14 July 2011 00:25

Its your choice really. The beauty of engineering is nothing is cast in stone.

MariusL

Sat 16 July 2011 00:57

Ball screws are best connected with a coupler that will relieve any misalignment. Unless your ball screw is very coarse, I would not reduce the coupling.

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