Re: Stepper motors for mill/drill & source of supply?

I have my ears open on this question. I am waiting for my lathe to
arrive with plans on CNC'ing it. There are some sites that offer
motors, but I to have not found how to size them. And the few sites
that do offer larger units don't list much detail.

I am still looking for details on stepper holding power vs using a
worm gear. Electical vs mechanical. It seems that the higher
mechanical holding power of a worm gear allows a lower required
holding power for the stepper. The trade off being slower speed
through the gears. But that seems to be a benefit in resolution.
But it could increase the error....

I'll stop talking now.

Dave

--- In CAD_CAM_EDM_DRO@y..., "Jeff Swayze" <jswayze@o...> wrote:
> Hi,
>
> Can anyone recommend what size stepper motor I would need to drive
a
> mill/drill table for CNC control? I've heard numbers in the range
of
> 400 oz.-in., but I'd like to hear from those with experience.
>
> Also, where's a good source of supply for such a motor? It seems as
> though there's quite a large price difference between the different
> sites on the web.
>
> Thanks,
>
> Jeff