collet closer on hardinge hlv-h

collet closer on hardinge hlv-h - Printable Version

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collet closer on hardinge hlv-h - carkrazd - 07-26-2013

Picked up from intro page . See carkrazd
collet closer will not lock in place with stock in it.
I gave the collet two full turns on the collet threads.
collet will not click into place to lock stock in collet.
As TomG said you guys bring a lot to the table and I hope I can help you guys too

RE: collet closer on hardinge hlv-h - Mayhem - 07-26-2013

I've quoted the posts from your intro thread here. Ed may be able to move them but I know I screw up once before trying to do this Slaphead

(07-26-2013, 08:25 PM)carkrazd Wrote: Hi Tom
Glad to be here as per hardinge I toyed with it last night till around 11 pm I learn something every time I turn it on.
Its truly an incredible machine
I 'm still in shock that I found it
I have a few ? on the collet closer , it seems it should click or lock into place it seems to stay loose I think some repairs are needed there other than that its very nice just not as pretty as yours.
its found my soft spot its a 63 vintage just like me.

(07-26-2013, 09:55 PM)TomG Wrote: The collet closer arm attaches to the rear of the headstock with a pivot pin and the closer lever pivots on the arm to close the collet. The whole assembly can be removed by taking out the pin.

Tom

(07-26-2013, 11:01 PM)carkrazd Wrote: Hi Tom

When I try to lock the stock in the collet it does not seem to clamp the stock tight. someone said it has fingers inside the closer but I haven't taken it apart yet to see.
So last night when turning some brass scrap I put on the 3 jaw and went for it. I left the collet in and put the 3 jaw over it.
Any thoughts on the closer or adjustment of the fingers?
Thanks carkrazd

(07-26-2013, 11:10 PM)TomG Wrote: There are no fingers. The lever just pulls on a tube that the the collet is attached to and the tube pulls the collet into a tapered bore to close it. Sounds like you just need to screw the closer farther onto the collet.

Tom

(07-26-2013, 11:37 PM)TomG Wrote: Here is a link to an early operators manual that shows how the closer works. Better make a copy, it's a keeper.

HLV-H Operator's Manual

Tom

RE: collet closer on hardinge hlv-h - carkrazd - 07-27-2013

Thanks Tom
This book may be different than mine, I think mine is newer.
The machine on the front is exact to mine the closer is the same.
The copy has been saved. Thumbsup

And mayhem thanks for helping guide the post to the right spot.

RE: collet closer on hardinge hlv-h - carkrazd - 07-28-2013

Last night I took the collet closer apart .
in side there are three fingers that look to have wear to them.
In the Hardinge parts book I found the clutch fingers # 37a-485.
I hope Hardinge still has them without having to sell the house.
Is there a post on showing the pics I'm not sure how to yet.

RE: collet closer on hardinge hlv-h - EdK - 07-28-2013

(07-28-2013, 12:07 PM)carkrazd Wrote: ...
Is there a post on showing the pics I'm not sure how to yet.

Yes, it's here.

http://www.metalworkingfun.com/showthread.php?tid=1006

Ask questions if you need help after reading that thread.

Ed

RE: collet closer on hardinge hlv-h - carkrazd - 07-28-2013

Hope this works Thanks Ed

RE: collet closer on hardinge hlv-h - carkrazd - 07-28-2013

Now the real trick is to find out how much wear before spending a bunch with Hardinge and being sure the problem is here.
This is what a fellow from the UK told me the problem was.
Hope he's right it makes sense these fingers will lock the collet in to place.
A fellow named Frank Ford also talks about this in a post on HSM.

RE: collet closer on hardinge hlv-h - TomG - 07-29-2013

Here's a guy who restored an HLV-B, which looks to be what you have. I see he also has a parts list section on his site as well as cross references to current Hardinge part numbers. It looks like the "fingers" act as over center cams that lock the collet closed. Looking at the parts list, there appear to be adjustments for them.

Hardinge HLV-B

Tom

RE: collet closer on hardinge hlv-h - carkrazd - 07-29-2013

Hi Tom
The hlv-b ended in about 1959
The model on the bed of the one I have is hlv-h -1105
the 1105 makes it a 1963
The hlv-b shown in the rebuild has controls in the front of the cabnet.
Mine like yours are above the head.
In the first pic. you sent the black collar covers were the clutch fingers are located.
If you remove the collar (4 allen screws) and slide the black collar back you will see the clutch fingers.
also there is a collet closer called a royal which is the same design.
as far as a adjustment I'm still studying on that and will post what I find As always thanks for your help

RE: collet closer on hardinge hlv-h - carkrazd - 08-17-2013

Up date
For only $209 you too could buy a new set of clutch fingers.
I don't think so.
But I do think I will try to weld a 1/16 of an inch and start filing till it works.
pics of this project coming soon stay tuned.