Re: [CAD_CAM_EDM_DRO] Re: Fine-pitch allthread?

Jeff,
I think that would defeat his purpose. I've cut and used multiple lead
screws, and the screw advances by the pitch of one of the threads, for
example, if you use a 10 TPI, and cut 4 leads, it may look like 40 TPI, but
it effectively is a 10 TPI screw. I think he's looking for a screw with a
very fine adjustment.

Marv Frankel
Los Angeles

----- Original Message -----
From: "Jeff Demand" <jdemand@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, July 03, 2003 6:05 PM
Subject: [CAD_CAM_EDM_DRO] Re: Fine-pitch allthread?


> 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
>
>
>
>
>
>
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> Jeff Demand
> Modeling Solutions
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