Re: [CAD_CAM_EDM_DRO] sprockets?

At 04:28 AM 7/11/02 -0000, you wrote:

>threaded rod and with a anti-backlash nut for the Z-axis. What would
>be a good ratio from stepper to rod sprockets? 1:1, 1:2 The stepper
>have a 180 S/R.>
>How thick of a timing belt should I be looking at? 3/8", 1/2" or ???

I drive from 450 and 600 oz-in steppers using Berg's cable-timing belt in
.2 pitch. These rate at 100 lbs tensile at the splice. They are about 5/16"
wide. Have never slipped but I did crack a few splices in various
contretemps situations. They should hold up to 150 oz-in steppers forever.

Your drive ratio is going to depend on required precision and lead pitch.

Regards, Hoyt


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