Quote Originally Posted by BillTodd View Post
I would use one or perhaps two stages of plain rubber belt speed reduction between the motor and lead-screw (stepper motors, gears and notch belts are noisy)
Bill
So if i was to use an 0.050" lead leadscrew thats 1.27mm per rev so my 2mm feedrate will require 1.575 revs of the leadscrew per minute. (correct me if i'm wrong!)
What would be a sensible gearing ratio? I'm thinking a single stage might be better, to reduce losses/ slip ?? What kind of speed would a servo motor prefer to run at whilst giving me some leeway? This is all new to me, does anyone have links regarding servo motors or tacho generators?
If i was to have 2 or more stages of speed reduction surely i would be better to have the tacho generator driven by the leadscrew itself? Is this ever done?
Many Thanks