511
General Mach Discussion / Re: BT30 spindle from scratch - with power drawbar and ATC of course
« on: October 04, 2012, 07:24:16 PM »
Feedback is that people really like to see the raw materials and not just the finished parts. Also, mock ups seem to be popular. It would be nice if there was more participation in this thread instead of my e-mail, but in any case, here are some mock ups of the mechanisms for the arm and the carousel. I am most likely going to use the same gear box for both, although the carousel will be driven by a smaller BLDC servo and a Coplet Accelnet drive.
To Hood; incidentally, the Copley does have the configurable roll-over feature. I have not had time to check out the rest of the related feature set that you described, but it looks like it may be the hot setup for the carousel. The Mitsu J3 has a special anti vibration capability that should make it a good choice for the uber accell/decell of the arm.
http://www.youtube.com/watch?v=8JkFqzwlyiI
The Mitsu motor can blast over 6K RPM momentarily so with the 50:1 worm gear drive the swing should happen in about 1/4 of a second give or take. Any of the 6 tools should be reachable in less than 1/2 second with the little BLDC servo motor. I *might* be able to eliminated the pneumatic release of the tool from the carousel, so I think I am on target for sub 5 second tool changes and be well back from the maximum speeds.
To Hood; incidentally, the Copley does have the configurable roll-over feature. I have not had time to check out the rest of the related feature set that you described, but it looks like it may be the hot setup for the carousel. The Mitsu J3 has a special anti vibration capability that should make it a good choice for the uber accell/decell of the arm.
http://www.youtube.com/watch?v=8JkFqzwlyiI
The Mitsu motor can blast over 6K RPM momentarily so with the 50:1 worm gear drive the swing should happen in about 1/4 of a second give or take. Any of the 6 tools should be reachable in less than 1/2 second with the little BLDC servo motor. I *might* be able to eliminated the pneumatic release of the tool from the carousel, so I think I am on target for sub 5 second tool changes and be well back from the maximum speeds.