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Poll

Knee or Quill for Z axis

Knee
2 (25%)
Quill
3 (37.5%)
Both
3 (37.5%)

Total Members Voted: 8

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Author Topic: Bridgeport Mill  (Read 6875 times)

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Offline M250cnc

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Bridgeport Mill
« on: March 02, 2008, 10:21:35 AM »
If you feel strongly enough please add a comment.

Phil_H
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The Good Thing About Mach3, Is It's very Configurable

The Bad Thing About Mach3, Is It's Too Configurable

Offline Chaoticone

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  • 5,624 5,624
  • Precision Chaos
Re: Bridgeport Mill
« Reply #1 on: March 02, 2008, 10:30:16 AM »
Phil,
   I did the knee on mine. I love it except for the speed. The only way I would do the knee again would be to use an air assist ballscrew and a big servo for speed. You could just hang a motor on the knee for tool length comp. and setting your work 0 and drive the quill for your z. They both have their benefits. The quill can be driven much faster for the same money. If you use the knee, you can lock the quill or still use it by hand for things like tapping.

Brett
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;D If you could see the things I have in my head, you would be laughing too. ;D

My guard dog is not what you need to worry about!

Offline panaceabeachbum

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  • 338 338
Re: Bridgeport Mill
« Reply #2 on: March 02, 2008, 07:50:20 PM »
I did both on mine a few years ago , I unplug the knee and plug in the rotary table from time to time, I generaly use the quill as the z  axcept when swapping from an endmill to the drill chuck on certain files, nice to have the option. The knee is slower but much easier to fit a servo motor
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Offline BluePinnacle

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  • 307 307
Re: Bridgeport Mill
« Reply #3 on: March 04, 2008, 08:38:09 AM »
I vote for Quill as it's the least astonishing idea - but both is an intreguing prospect. Could you get mach3 to understand the idea of two Zs working togther?
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