Re: [CAD_CAM_EDM_DRO] Handwheels on a retrofit? Why!? was Re: software questions DRO

If the axis is set up properly, ie nothing is binding, it doesn't take
much force on the table to spin the ballscrew. We've got several axes
set up with 3/4" 5TPI ballscrews direct driven by servos where we can
push on the axis and it will spin the motor.

I wouldn't rely on an un powered ballscrew to hold an axis in place.

Kim

> Ron
> This isn't usually true, more like a wives tale. If your ballscrew
> pitch is much more than .5 turn/inch it won't backdrive. Most mills
> are several turns per inch. If this wasn't true Bridgeport would not
> have offerred a manual mill with ballscrews. Check out the ballscrew
> company web sites.
>
> Roger S.
>
>
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--
Kim Lux <lux@...>