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Drill, mill, and collet chucks?

Spackman

Plastic
Joined
Dec 3, 2019
Consider me a complete noob. I'm just a new tool tech working in a machine shop who wants to learn more outside of people telling me "this is how it's always been done".

I am confused about the difference between drill, mill, and collet chucks. Where I work we do not refer to anything as a collet chuck.

https://cdn11.bigcommerce.com/s-mzp...sm_2013__54287.1484243415.jpg?c=2&imbypass=on
We call holders like this drill chucks, I believe these are actually called collet chucks?

http://www.lyndexnikken.com/images/files/Lyndexnikken-CT-millingchuck(1).jpg
We call these mill chucks which I believe is correct. Tad confusing because we also use collets in these, we just call the mill collets instead of drill collets.

https://www.freertool.com/content/i...-mount-plain-bearing-drill-chuck-wkey_550.png
And we call these holders just chucks but I believe these are actually called drill chucks. We don't have many of these and only use them for holding dial indicators, we never actually use them to drill.


From now on I will refer to the holders by (what I think are) the proper names for them.

We only ever drill in collet chucks and mill in mill chucks or heat shrinks. I have been told that collet chucks do not provide enough side support for milling, and the radial force will cause chatter. But after some googling it seems like collet chuck are mostly capable of milling, just can't handle aggressive or high speed operations. Is it really ok to mill in a collet chuck?

And regarding heat shrinks and mill chucks (I believe these are mostly the same so I categorize them together), is it ok to drill in them? I was told that we drill in collet chucks specifically due to the lack of side support, so that the drill can walk to the indent from the spot drill. What would be so bad about drilling in a mill chuck or heat shrink, especially if the hole wasn't spot drilled before hand?
 








 
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