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Author Topic: "Sealing" a 5C Collet  (Read 7709 times)

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"Sealing" a 5C Collet
« on: February 04, 2009, 03:19:00 PM »
 :) Hello All,
    I am loading parts into a 5C collet from the tooling end to an internal stop.
Running a flood of coolant/cutting oil.
Looking for any suggestions or industry standards for sealing the collet to keep the flooded swarf out.
The flood follows the tool so it is clear of the collet during the part change.
I need to eliminate/minimize the chance of chips altering the stop setting and marring the part by getting between the bore of the collet and the material.
Not to mention leaking at the back end of the closer.
Thanks for anything,
RC

Offline wil

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Re: "Sealing" a 5C Collet
« Reply #1 on: February 05, 2009, 07:52:56 AM »
Space and Part loading permitting -
How about making a new clamping nut for the collet.
Where a normal clamping nut has a thru bore, make one that is solid on the front end.
Load a short piece of the finish bar size into the collet and lock it up in the usual way.
Then bore out the front part of the new collet nut as close to finish bar size as possible,
you could also incorporate an internal O`ring undercut in the bore for better sealing.

You could also turn a blunt point onto the end stop you have, so the contact area is much reduced.

Re: "Sealing" a 5C Collet
« Reply #2 on: February 05, 2009, 08:09:14 AM »
Hi Wil,
   The 5C is pulled into the spindle with a draw tube.
I need to seal the slots in the collet.
I'd thought about casting it with urethane or such....something resilient enough to seal without affecting the clamping action.
Just looking for ideas, I like the blunt point suggestion.
Thanks,
RC

Offline wil

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Re: "Sealing" a 5C Collet
« Reply #3 on: February 05, 2009, 08:28:57 AM »
doh!   sorry mate I had ER type collet in my head.

Offline Graham Waterworth

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Re: "Sealing" a 5C Collet
« Reply #4 on: February 05, 2009, 11:59:38 AM »
You could try a spinner disc, grip the spinner in the collet with the component located in the spinner.

Graham
Without engineers the world stops

Offline RICH

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Re: "Sealing" a 5C Collet
« Reply #5 on: February 05, 2009, 12:12:24 PM »
How about trying some GE Silicone clear caulk? Just degrease the 5c and only enough to form a "gasket"  and such that it won't bulge out when pulled. There are some other rubberized caulks used for concrete / glass that are even more pliable.
RICH
Re: "Sealing" a 5C Collet
« Reply #6 on: February 05, 2009, 01:29:02 PM »
Hi Graham, That's a pretty keen idea.....I'd need a slicker with a hood.  No enclosure....YET !

Hey RICH, I hadn't thought about silicone caulk.......I'm tryin' it.

Thanks Guys,
RC

Offline da21

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Re: "Sealing" a 5C Collet
« Reply #7 on: February 05, 2009, 05:07:23 PM »
i usualy direct a fixed jet of coolant ,( i made a wide angle nozzle out of some tin plate, to slip over the origional nozzle ) at 90 deg across the collet as close to the collet as i can get , if anything the jet is angled forwards slightly  , so the flow pushes any swarf away from the 5c face does the trick for me .

flow pressure is quite high too


dave