Re: [CAD_CAM_EDM_DRO] Re: Threaded Rod/Cable Driven Encoders

Your explanation then is very similar to the inexpensive type of
anti-backlash nut, Instead of a Spring, the "o" ring causing the consistant
tension to the shaft.

Sounds like a pretty good inexpensive solution to me !

Thanks,

Chris

ballendo wrote:

> Chris,
>
> Not quite like that, but...
>
> If you start with round stock for the nut; drill and tap it for the
> screw, and turn a semicircular depression near one end (can be done
> with a chainsaw sharpening file)
>
> Then you stand it on end (depression end up), and saw partway down
> (making 2 or 4 fingers with one or two sawcuts).
>
> Finally put an o-ring in the depression you made earlier to provide
> the force to push the fingers in... Use an "thicker" o-ring for more
> force.
>
> Works well. Will be better on acme than american std due to flank
> angle.
>
> Hope this helps.
>
> Ballendo
>
> P.S. the "other" end can be threaded like commercial nuts, or glued,
> or clamped to the machine frame. If you have a lathe or drill press,
> this is a quick and easy project...