RE: [CAD_CAM_EDM_DRO] Re: power chucks, bar feeders etc

http://www.caswa.com/collet.jpg
Not really related to what you're doing (it's going to be an ATC spindle)
but it demonstrates one way of keeping a collet closed.
Yours would be bigger and the draw bar would be hollow (and probably screw
onto the outside of the collet like the 5C closers do).The assembly could be
as short or as long as you want.
That stack of Bellville washers can generate a prodigious amount of closing
force..
Add a thrust bearing to allow a pneumatic arm to open and close the thing
while it's spinning. You get the idea.

PK

> -----Original Message-----
> From: CAD_CAM_EDM_DRO@yahoogroups.com
> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Graham Stabler
> Sent: Saturday, 3 June 2006 5:18 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Re: power chucks, bar feeders etc
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Graham Stabler" <eexgs@...>
> wrote:
> >
> > So I'm thinking some form of 2 or 3 jaw chuck
>
> on second thoughts scratch that, a chuck would mark the stock
> making it jam in the front bushing unless it was a two jaw
> with smooth jaws to match the stock.
>
> Graham
>
>
>
>
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com,
> wanliker@..., timg@...
> Moderator: pentam@... indigo_red@...
> davemucha@... [Moderators] URL to this group:
> http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> 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
>
>
>
>
>
>
>