Homemade Power Drawbar
#4
I love that idea, and the execution!

How does one determine the difference in torque normally applied when tightening a collet by hand versus the torque that system applies? That's my only concern, as the 7/16-20UNF thread isn't all that strong. Still I find myself using more or less force depending upon the tool. A milling cutter that could pull down and mill my new hard jaws gets cranked pretty good, while a drill chuck for a small hole doesn't need that. Do you get one setting with that, or do you vary air pressure for more or less clamp pressure?

Also, when I release a collet by hand the drawbar unscrews up and I tap the end of it to release the tool & collet from the taper "lock." Does that system automatically eject the tool & collet by virtue of being fixed and preventing the drawbar from riding up as it unscrews? I assume so, and that the "hammer" part of the tool works well to break the taper lock.

One of those would be even more appropriate on my mill that's so tall. When some vertically challenged friends have used the machine, it's a long reach!
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Messages In This Thread
Homemade Power Drawbar - by zmotorsports - 06-11-2015, 09:32 AM
RE: Homemade Power Drawbar - by EdK - 06-11-2015, 05:01 PM
RE: Homemade Power Drawbar - by zmotorsports - 06-12-2015, 06:54 AM
RE: Homemade Power Drawbar - by PixMan - 06-12-2015, 07:30 AM
RE: Homemade Power Drawbar - by zmotorsports - 06-12-2015, 08:28 AM
RE: Homemade Power Drawbar - by PixMan - 06-12-2015, 07:46 PM
RE: Homemade Power Drawbar - by zmotorsports - 06-12-2015, 09:12 PM
RE: Homemade Power Drawbar - by Kennyv - 06-13-2015, 04:18 PM
RE: Homemade Power Drawbar - by EdK - 06-13-2015, 04:36 PM
RE: Homemade Power Drawbar - by zmotorsports - 06-13-2015, 04:36 PM
RE: Homemade Power Drawbar - by EdK - 06-25-2015, 06:15 PM
RE: Homemade Power Drawbar - by the penguin - 06-25-2015, 07:14 PM
RE: Homemade Power Drawbar - by PixMan - 06-25-2015, 09:13 PM
RE: Homemade Power Drawbar - by Roadracer_Al - 06-26-2015, 11:28 AM
RE: Homemade Power Drawbar - by Mayhem - 06-26-2015, 01:13 AM
RE: Homemade Power Drawbar - by zmotorsports - 06-26-2015, 08:12 AM
RE: Homemade Power Drawbar - by EdK - 06-26-2015, 11:23 AM
RE: Homemade Power Drawbar - by zmotorsports - 06-26-2015, 01:38 PM
RE: Homemade Power Drawbar - by EdK - 06-26-2015, 08:06 PM
RE: Homemade Power Drawbar - by zmotorsports - 06-26-2015, 09:00 PM
RE: Homemade Power Drawbar - by EdK - 06-30-2015, 02:06 PM
RE: Homemade Power Drawbar - by EdK - 06-30-2015, 02:28 PM
RE: Homemade Power Drawbar - by zmotorsports - 06-30-2015, 02:38 PM
RE: Homemade Power Drawbar - by EdK - 06-30-2015, 02:45 PM
RE: Homemade Power Drawbar - by EdK - 06-30-2015, 03:52 PM
RE: Homemade Power Drawbar - by EdK - 07-01-2015, 03:43 PM
RE: Homemade Power Drawbar - by zmotorsports - 07-02-2015, 08:46 AM
RE: Homemade Power Drawbar - by EdK - 07-02-2015, 08:59 AM
RE: Homemade Power Drawbar - by zmotorsports - 07-02-2015, 12:02 PM
RE: Homemade Power Drawbar - by EdK - 07-02-2015, 01:51 PM
RE: Homemade Power Drawbar - by EdK - 07-02-2015, 01:56 PM
RE: Homemade Power Drawbar - by zmotorsports - 07-02-2015, 04:56 PM
RE: Homemade Power Drawbar - by EdK - 07-02-2015, 06:53 PM
RE: Homemade Power Drawbar - by zmotorsports - 07-04-2015, 12:24 PM
RE: Homemade Power Drawbar - by EdK - 07-04-2015, 07:27 PM



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