Quote:
Originally Posted by bojan
The belts and pulleys came from Small Parts & Bearings, and overall reduction is 1:16, same as in previous version [20:80 spur gears pair (I wish they were helical) and 12:48 timing belt pulleys].
This gives 1:2880 at motor axle, and resolution is 2.2500 arcsec/step or 0.0703 arsec/u_step (at 32 /u steps as per Darren's firmware)
|
Hi Bojan,
can you please clarify how you get the 1:2880 reduction ratio from 1:16,
is it after the worm and tooth reduction on the EQ6?
is it detrimental to use v belts and pulleys rather than timing belts? its just that I need a total reduction of around 800:1 for a step clock of 33Hz, and I can't get the matching timing pulleys or pulleys with tooth on the OD and Hub to make a gearbox with timing pulleys to reduce backlash.
i've been thinking of planetary gearboxes, i pulled out one from a cordless drill, reduction ratio is quite high, but not sure of backlash.
had a look at the stepper gearheads from various suppliers, they're quite expensive.
any recommendations?