There seem to be two types of motor-screw couplings for CNC - Oldham couplings where there is a sliding disk,and a type whose name I don't know with spiral cuts in them.
Both seem to be very expensive for what you get!
Anyway, can anyone tell me what they actually do -the Olham couplings seem to compensate for slight misalignment between the drive and driven shafts, but do the other ones do the same? Which is better?
Thanks,
-- Peter Fairbrother