RE: [CAD_CAM_EDM_DRO] Re: Thread milling

And most taps that I have seen have a "standard" shank size-not necessarily
the same as the major or minor diameter of the cutter part.

Andy Wander
Verrex Corporation


-----Original Message-----
From: metlmunchr [mailto:metlmunchr@...]
Sent: Thursday, December 09, 2004 2:18 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: Thread milling

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Jeff Jones" <cnc@d...> wrote:

> I've been following this thread with some interest. Kinda imagining it
> in my mind's eye... And when I "glanced up" I realized I have no idea
> how you'd hold a tap in the spindle. Seems like thread mills had
> standard sized shanks, no? Maybe if the tap was just the righ size
> a collet would do the trick. If not I'm stumped. Or did I miss
> something?
>
A standard set of collets has sufficient range to hold any size shank
within their min to max size range. Depending on the type collet,
they will each collapse a certain amount. The collapse amount varies
by type of collet and that determines the increments necessary to
actually have a "full" set of collets.