RE: [CAD_CAM_EDM_DRO] General machine discussion, was Bent Nookballscrews ?????

I'm happy to hear that you enjoyed the thread. I was under the
impression it had deteriorated to the point where people were annoyed.

I'm going to check out the reference to putting oversized balls in
ballnuts as a means to eliminate backlash.

I'll be checking out of the group for a while. I'm really busy and I've
got to get back to my normal work. Thanks for all the input and
discussion.

Kim

On Wed, 2003-08-13 at 07:41, Mike Gann wrote:
> This has been a great thread for me - I have learned a lot.
> As regards to the comments below, here is one example from a Hiwin Ballscrew
> manual someone posted a link for yesterday:
>
> "Single nut preloading:
>
> There are two ways of preloading a single
> nut. One is called "the oversized-ball
> preloading method". The method is to insert
> balls slightly larger than the ball groove space
> (oversized balls) to allow balls to contact at
> four points (Fig. 5.7).
> Fig. 5.7 : Preload by ballsize."
>
> > Ballendo wrote:
> >
> > P.S. FWIW, loading ballnuts with oversize balls to create a negative
> > clearance IS something the ball screw and nut mfrs. HAVE been doing
> > for decades...
>
> Kim Lux wrote:
>
> If that were the case, then there would be no reason for a two nut zero
> backlash ball system.
>
>
>
>
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Kim Lux <lux@...>