Re: Fine-pitch allthread?

Interesting, a tandem design would better tolerate the machining
forces applied and be less susceptable to damage from
contamination. It could also facilitate a "two-speed" motion by
connecting a stepper directly to each screw. Charles

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jeff Demand <jdemand@a...>
wrote:

> Randy,
>
> Have you thought about using a differential screw? Using two

coarser

> threads in tandem to achieve a finer effective pitch. I always

thought it

> an interesting technique but haven't yet found the need to make

one.

>
> Jeff
>
>
>
>
>
>
> -
> Jeff Demand
> Modeling Solutions
> http://www.aztec-net.com/~jdemand
> -