Collet work holding

Freedommachine

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A thread for sharing and learning about all things related to collet work holding solutions.

Have you used a collet chuck in an unconventional set up that worked well?

Has anyone made their own collet chuck, fixtures or adapters? Would you mind sharing pics of the set up and describing how you built it and how it works?

Is there any particular brand of collet work holding tooling you prefer?

Do air actuated fixtures save a substantial amount of time over cam-lock or scroll type collet closing methods?

I had mentioned in another thread that the majority of affordable collet type work holding is only available for 5C collets.

It would be nice to have affordable commercial options like cam-lock, scroll lock or air actuated collet fixtures; indexers, or even just simple collet blocks for larger sizes such as 3J, 16C or 22C collets.

There are options available from companies such as Yuasa, Hardinge, Royal and a few other top of the line brands. However, they are all $1200 + for a simple, single station, manually operated collet fixture.

There was a company making basic square and hex 3J collet blocks but it looks like they are no longer in business.
 

Mud

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This is a Mead air operated 5C chuck. I really like it. Here we're tapping those standoffs clear through, drop it in, flip the toggle, feed the quill, flip the toggle again, remove. A foot pedal would be slower. Only way I see to improve would be to activate the air when the quill moves.
20220122_183310.jpg
 

Doug

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This is a Mead air operated 5C chuck. I really like it. Here we're tapping those standoffs clear through, drop it in, flip the toggle, feed the quill, flip the toggle again, remove. A foot pedal would be slower. Only way I see to improve would be to activate the air when the quill moves.
View attachment 2840
get a air valve that looks like a microswitch with the roller or lever and mount it up on the quill stop.
When the downstop nut comes off it, the air flows, back the quill all the way up. and that nut
actuates the air valve to open the closer.

Or just get a Snow tapping machine and it's all built in, ready to go.....6 position selector switch
sets the "logic" of how the machine operates.
 
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Barbter

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I was lucky to find one of these on ebay in the UK. It worked great in the lathes as we just bored jaws and held it on the OD.
It also has threads in its base, to mound on a block which I never did....so it is universal (but 5C).
Could be worth a "copy"....
 

Spruewell

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This is a Mead air operated 5C chuck. I really like it. Here we're tapping those standoffs clear through, drop it in, flip the toggle, feed the quill, flip the toggle again, remove. A foot pedal would be slower. Only way I see to improve would be to activate the air when the quill moves.
View attachment 2840
Could also improve by having them come out of the lathe with the threads already in them.

I picked up an Eagle Rock version of the air actuated 5C collet chuck. It was totally worth it over the cam actuated one I was using before. Only downside was the small mounting holes and round base. Sometimes it’s nice to be able to lay the collet holder on its side.
 

Mud

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Could also improve by having them come out of the lathe with the threads already in them.
Definitely. At the time I hadn't single pointed yet, so I reverted back the the way it used to be done. The threads go through both ends, so tapping in the lathe is a little dicey. I plan to never do these (or anything else) for that customer again so I am not too concerned about improving it at this time.
 

Spruewell

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I had a 5C cam lock holder that failed on me. I rebuilt it:


Seemed like a good idea at the time, but it turned out to be a bit awkward to tighten. I needed to use a big crescent wrench to get enough torque to hold parts securely. I was going to make a more compact wrench to fit it, but the urgency waned when I got the air actuated setup
 

Doug

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Definitely. At the time I hadn't single pointed yet, so I reverted back the the way it used to be done. The threads go through both ends, so tapping in the lathe is a little dicey. I plan to never do these (or anything else) for that customer again so I am not too concerned about improving it at this time.
I know the push these days is "once and done" and "Drop it off the lathe complete"
But on short runs, getting the tap set just right, and doing it on a bar end makes it
a blind hole.
Sometimes, it pays to just get the lathe producing parts quickly, and if you have a 2nd op tapping station handy, run them that way. Much less set-up time.
The cut off qty might be 500 parts, or it may be 50 parts.
 

Mud

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I like that little collet fixture. I need one of those for 3J collets. I have two 5 gal buckets full of 3J collets - basically every shape and size - but I have nothing that uses them.

Maybe a topic for a new thread? 🤔
3J D1-8 collet chuck -
I need one of these for a D1-6
 

Garwood

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How about I send it in a flatrate box and you decide if it's worth a few bucks or a trade for shit you don't need or it's just a doorstop?
 

eKretz

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I converted mine to D1-6. Not that difficult a job. I made it a "Bump-Tru™" - haven't got around to adding the set screws to make it a Set-Tru.
 
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