Trying to identify a collet holder/collets

[Brent H]

I got a tip from @architect aboit some possible 30 taper tool holders for my mill so I went and got them. They are interesting- more than likely CNC machine as they depth limit the tool and have five collet sizes - 1/4, 3/8, 1/2, 5/8 and 3/4. The four I picked up came with some other stuff that all sorta fits?

The other items:


There are three of these and look to bolt onto a machine - the one end takes a collet with a nut and I have 2 x1” collets and 1 x 1/2” one - two retaining nuts


There are 4 other plates that the collets thread into and could then be bolted to a machine:


There are some smaller collets with locating pins in the sides of them.
This is one collet with manufacturing marks:


If anyone can perhaps identify/show how things go together or can use some of the items (not the 30 tapers ) please let me know. I have a part plan to use some of the other stuff but would rather see it fit back onto a machine that needs it.

 

[SimonM]

Could they be collet chucks for a lathe or rotary table/dividing head?

 

[Brent H]

@SimonM I think you are correct - they would appear to be a CNC lathe collet chuck.

 

[Johnwa]

There is some discussion on Clare collets here
https://www.model-engineer.co.uk/forums/postings.asp?th=127814

 

[RobinHood]

Looks like they could be a fore runner of the Clarkson Autolock collet system. Found the patent drawing.



A search also revealed this:

https://www.abandoned-derelict.co.uk/clare-tooling-systems-factory-urbex/

 

[Brent H]

Great info!
I plan to set up the 4 x 30 tapers with 4 different tools and that will be that for them. Should work out well - can even put a tongue on the back of the tools if required - will see.

the other items I will have to see if there is a re-purpose for them. Might have a use on the tool cutter/grinder.

 

[Tom Kitta]

Clarkson uses threaded endmills - I have two of these chucks. Collets look quite different. They have a lip at the bottom and inside thread.