Re: [CAD_CAM_EDM_DRO] Re: gearmotors,encoders

jmw@... wrote:

> Jon, what do you think about the rigidity of a 1.25" screw 36" long--
> moving a 36" x 12" table plus the work. The encoder will have a
> thousand lines (as soon as I figure out how to recode 1968 line
> output to 1000 line). Maybe on a sharp accel you'd loose a count ...
> maybe only your ME knows for sure.

I'm not an ME (just a dumb chemist) but occasionally can run a calculator.
assuming 1.1 for effective dia. of the 1.25" lead screw and only 800 oz-in of applied torque I get 0.06 degrees or 1 count in
5700.
If your drive exceeds the 800 oz-torque on accel. then all bets are off.

Dave

ps
The deflection is linear with torque so at least you don't have a power function working against you. ;-)