Re: Stuck collet

Hello Ballendo,

Interesting opinion you have.
First Taig gives you 1" and 3/4" nuts to tighten with, so it is hard
to tighten easy with a 1 and a 3/4 inch wrench.
I should probably mill a 1/8 thick inch, steel stubby wrench (Does
any body know where to buy them for Taig?)

Next, the spindle scores the collet, since the collet is such a sharp
angle.

Last can you explain the lubraction problem? And what does this mean
... "lube "migrates" to the tool holding surface"?

Thanks,

Buck

--- In CAD_CAM_EDM_DRO@y..., ballendo@y... wrote:
> Gotta Jump in here!
>
> Don't put "lube" on a collet! It will only make things worse.
>
> The Taig collets(also used by MaxNC) have 15 degree tapers, and ARE
> compressed from the front, like a woodworking router.
>
> If a collet of this type is sticking, there is most likely
something
> on the collet itself, or in the collet seat in the spindle causing
> the problems. Very often(if precautions are not taken) some grit
gets
> in and creates a burr which then causes the sticking.
>
> Could also be something on the cutting tool. OR, the use of
precision
> collets and "wrong size" tools for the collet. Collets are made for
a
> very narrow range of diameters (usually), and they like to have
> REALLY ROUND shanks inserted (assumes round hole collets, obviously
> <g>).
>
> The other way this happens was referred to in an earlier post.Too
> tight on the install. This is made worse by the lube idea, and
often
> the lube "migrates" to the tool holding surface, which can have
> disastrous results! Silicone should not be anywhere NEAR collets,
IMO!
>
> So get that thing out of there and do some investigating. I'm sure
> one of the things I've mentioned is at work. Correct it, and the
> collet will work as designed.
>
> Hope this helps.
>
> Ballendo
>
>
> > Lubrication - Sounds like a good idea, I just but silicon on the
> > latest mill.
> <snip>
> > BUT why are we having to reinvent this? Is it really a lousy
design
> > that they just keep selling?
> >
> > Buck
> >
>
> > --- In CAD_CAM_EDM_DRO@y..., Brian Pitt <bfp@e...> wrote:
> > > a dab of lipstik (chapstic wont work) on the collet taper helps
> > > keep the collet from jamming in the spindle
> > > could be worth a try next time
> > >
> > > Brian