novel shaftgrabber

I think maybe I just solved my southbend retrofit leadscrew drive
problem. Here's the idea.

Buy an 11/16" 3MT collet and a 1 1/4" OD MT3 socket.

Shorten socket at big end very slightly until ID is enough smaller
than 1" to allow turning a very short 1" OD step for mounting a 1" ID
encoder wheel. This can leave a very thin wall as there is essentialy
no torque on the codewheel.

Put collet in socket, put screw end in collet. Tighten with a bolt
through the back of the socket.

Make a fixture with a sintered bronze bearing for the sleeve to run in.

Attach timing belt sprocket to 3MT sleeve with normal shrink bushing.

Chris Stratton

-------------------------------------------------
Christopher C. Stratton
Engineer, Instrument Maker, and Horn Player
ccs@... 617 628 1062
http://web.mit.edu/~stratton/www/brassbuild.html