Re: [CAD_CAM_EDM_DRO] 5C collet closer drawbar threading problem

> >>
> Are you sure the ID thread on the collet is concentric? A lot of cheaper
> collets have a steel plug that is welded or pinned into the collet body,
> such that the OD threads may be concentric, but the ID ones aren't.
> The ID threads are usually used to hold a collet stop in the 5C, and so
> a modest runout won't cause a problem. You may have to make an
> ID to OD adaptor so the same drawtube can be made to pull on the
> OD of the collet. I have a strong suspicion my 5C collets would
> act just like this.
>

There was a burr on the internal thread that we didn't see. We cleaned
it up and everything runs fine.


--
Kim Lux <lux@...>