Thanks again to Wes, the electromagnetic clutch works perfectly. This was a smooth project. I had all the right parts and it all fell together. I still have to do some wiring and make a cover to keep the chips out of the gears.
The number one consideration for this project is that there be no modifications to the lathe. That is achieved.
The brass fitting is threaded on the end of the crossfeed leadscrew. Left hand Acme thread, inside, blind. That was the hardest part. I had to make it twice. Then we have a very special zero backlash helical coupler. $$$. Was free though. Dug it out of the packrat stash. Next is the black clutch. It works perfectly and gives the instant on/off that I wanted. It will slip at just the point where you would say to yourself "Ugg, why is this so hard to turn?"
It is powered by the motor from a barbeque rotisserie. It gives a rate of .005 per second which should be perfect. It can be slowed to about half that speed using a dimmer although it is a synchronous motor and is not designed to be speed controlled, but it works great.
All in all, a nice project.
Forgot to mention, it removes by unscrewing two bolts. Takes about 30 seconds.
[This message has been edited by Evan (edited 10-13-2003).]
The number one consideration for this project is that there be no modifications to the lathe. That is achieved.
The brass fitting is threaded on the end of the crossfeed leadscrew. Left hand Acme thread, inside, blind. That was the hardest part. I had to make it twice. Then we have a very special zero backlash helical coupler. $$$. Was free though. Dug it out of the packrat stash. Next is the black clutch. It works perfectly and gives the instant on/off that I wanted. It will slip at just the point where you would say to yourself "Ugg, why is this so hard to turn?"
It is powered by the motor from a barbeque rotisserie. It gives a rate of .005 per second which should be perfect. It can be slowed to about half that speed using a dimmer although it is a synchronous motor and is not designed to be speed controlled, but it works great.
All in all, a nice project.
Forgot to mention, it removes by unscrewing two bolts. Takes about 30 seconds.
[This message has been edited by Evan (edited 10-13-2003).]
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