I just pried of the cover plate.
It looks like there is a stub of a shaft the can be accessed.
It currently has the worm gear on it, it looks to be just a roll pin holding it.
It takes ~29.5 turns of that shaft to cover the full range of 3.75 quill travel.
That equals 0.127 inch per rev (I will do closer measurements, its probably .125 per rev)
What are the chances of getting any realistic accuracy from that drive, possibly with just a coupling to the stepper and some sort of spring to control the backlash?
Jeff |