| Gallery, Projects and General > How do I?? |
| How do I get my chucks off? |
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| vtsteam:
Ahem. Now that I have your attention....... :D I was given 3 Jacobs chucks a couple years ago, and I'd dearly like to get one mounted on my mill drill -- at least one is a "Superchuck" and they're all stuck on collet adapters -- I think for CNC tool changers. I tried using a drift to pop them off. No go. Then I took them down to Lester. He owns a local machine shop that ought to be a museum. Flat belt overhead drives to dust covered lathes and machines, tools everywhere, ancient motors, giant press, etc. His father owned the shop before him. Lester always works alone. I buy my steel and welding supplies from him -- it always takes an hour to get something -- you have to tell stories and hear some good ones too before getting down to business. Anyway, I brought the chucks to Lester one rainy morning when I knew things would be slow -- and together we tried to get the chucks loose. The press was pushed as far as he felt comfortable without wrecking the chucks. Still no go. So, suggestions on what to do? I'm thinking that if the Jacobs taper part isn't hardened that I might try drilling it out with a drill a little under the smallest diameter of the taper. EDIT: added photo: |
| DavidF:
I'll take a look at mine tomorrow and see if I can figure it out. I know my one chuck is threaded and a couple others are jt. Have you tried heating it a bit? Or putting a wrench on the tang and giving it a little twist? |
| vtsteam:
Thanks Dave, these are taper chucks -- they are marked with the taper type. Don't have them in front of me now, but will post photos tomorrow. I don't want to heat it. Funny I was just surfing through the "Ooops" section on the forum, laughing at other people's mistakes, just amazing how other people do these things :zap: thank goodness I've never done anything like, well, for instance contacting the the chassis with a wrench while weraing a ring while tightening a positive battery terminal in my old pickup tr...I mean a friend of mine did that, not me. Burned a nice circle on his ring finger, and he threw the ring into a field trying to get it off. What a maroon! Anyway just reading up on these foibles, and then suddenly happened across a long thread on removing a stuck collet chuck from a mill. Coincidence? The thing that finally did it in that thread was a pair of U shaped wedges driven together by some bars with bolts through them. I think that might be a good bet for me. See here: http://madmodder.net/index.php/topic,6881.75.html |
| RussellT:
Jacobs sell wedges for that purpose. http://www.jacobschuck.com/drill-chuck-install.asp Russell |
| vtsteam:
:thumbup: Ah, excellent page of info. Thanks so much RussellT! |
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