Re: [CAD_CAM_EDM_DRO] rack&pinion

As a machine designer with many years of experience I can say the backlash
can be eliminated entirely thru proper design. Proper design would also
eliminate any problems of keeping the pinion on the rack. I can't provide
any web sites that would show this as proper design must be built in to the
machine during the design stage.

Smoke

>Excuse me for going in a different direction as everyone here seem to
>be fixed on ball-screw or its poorer cousin the lead-screw, and would
>thumb their nose at rack-and-pinion, but.....
>
>Questions:

>Why? Is it because of higher backlash? If so, any qualitative
>indication? Any redeeming factors? (like higher speed, easier
>construction, lower cost?)
>
>How would one keep the "pinion" on the "rack"? Any link to a site for
>more information, especially diagram?
>
>Thanks
>
>Peter
>
>