Re: Retrofitting sloppy drives

Russell,

There are more than a few who have retained the acme screws in a mill
cnc retrofit. You will need to adjust b/l often at the nuts, but
don't feel as if you MUST discard the screws. Having said this,
ballscrews are better, and getting easier to obtain and install.

Hope this helps.

Ballendo

--- In CAD_CAM_EDM_DRO@y..., Russell Shaw <rjshaw@i...> wrote:
>
>
> "Fitch R. Williams" wrote:
> >
> > On Sun, 20 Jan 2002 00:09:42 +1100, Russell Shaw <rjshaw@i...>
> > wrote:
> >
> > >To make a cheapy manual milling machine into a cnc
> > >one, what do you do about the 1/2 turn of backlash
> > >in the x-y screw threads?
> >
> > Use ball screws and nuts (best), or rolled acme screws with
adjustable
> > nuts (workable but not as good).
>
> So i guess that means ditching the old thread shafts
> completely. That's all i needed to know.