RE: [CAD_CAM_EDM_DRO] power chucks, bar feeders etc

I just think it seems like a neat project.

--- Paul Kelly <tech@...> wrote:

> I, inadvertently, over-dissasembled a Herbert 2D
> collet chuck whilst
> changing a collet the other week. It's a fairly good
> arrangement with a
> pnematic release up close to the collet.
> Will a collet do the job for you or do you need
> something with the range of
> a typical 3 jaw?
> PK
>
> > -----Original Message-----
> > From: CAD_CAM_EDM_DRO@yahoogroups.com
> > [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf
> Of Doug Pfaff
> > Sent: Saturday, 3 June 2006 10:07 AM
> > To: CAD_CAM_EDM_DRO@yahoogroups.com
> > Subject: Re: [CAD_CAM_EDM_DRO] power chucks, bar
> feeders etc
> >
> > Are you going to be doing any drawings for this
> project? If
> > yes, I'd be interested in a copy of them.
> >
> >
> > Doug Pfaff
> >
> > --- Graham Stabler <eexgs@...> wrote:
> >
> > >
> > > I'm just wondering if anyone knows much about
> the operation of the
> > > typical power chuck?
> > >
> > > I'm mentally designing a small swiss-style lathe
> and I
> > can't work out
> > > how to automate the rear chuck, it needs to be
> able to grip and
> > > release bar stock at will even at low speeds
> (i.e.
> > > no centrifugal chuck).
> > >
> > > I've seen wedge based chucks mentioned but you
> only seem to
> > get to see
> > > the outside of commerical ones.
> > >
> > > My only real idea has been a spring loaded
> collet chuck
> > with springs
> > > to keep the chuck closed on the bar stock and an
> external pneumatic
> > > mechanism to release it when required.
> > >
> > > Only minimal accuracy is required in terms of
> centering so I feel
> > > there must be some neat and dirty solutions out
> there somewhere.
> > >
> > > Graham
> > >
> > >
> > >
> > >
> > >
> > >
> > > Addresses:
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> >
> > OFF Topic POSTS: General Machining
> > If you wish to post on unlimited OT subjects goto:
>
> > aol://5863:126/rec.crafts.metalworking or go thru
> Google.com
> > to reach it if you have trouble.
> > http://www.metalworking.com/news_servers.html
> >
> > http://groups.yahoo.com/group/jobshophomeshop I
> consider
> > this to be a sister site to the CCED group, as
> many of the
> > same members are there, for OT subjects, that are
> not allowed
> > on the CCED list.
> >
> > NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC
> DOMAIN BY
> > POSTING THEM. DON'T POST IF YOU CAN NOT ACCEPT
> THIS.....NO
> > EXCEPTIONS........
> > bill
> > List Mom
> > List Owner
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
>
>
>
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