Re: [CAD_CAM_EDM_DRO] Re: lead screw pitch

I recently added Koyo encoders to a Cincinnati 5VC-750 with Siemens 3078
motors. The encoder was mounted on the back of the tach cover and covered
with sections of muffin tin.(high tech stuff<BG>) I bored a hole through
the back cover and turned a tapered adaptor shaft to fit the tach mounting
nut. The encoders used were the hollow shaft type. They have springy ears
on the body to handle misalignments. The springy ears were bolted to the
tach cover and the hollow shaft solidly mounted to the tapered adaptor shaft.

Contact me off list and I can send you a cad file with the details.

-Bob

>For discussion lets assume that it is a 8mm screw. What do the guys in
>european countrys using to operate their machines. The motors and the
>drives on this machine are siemens. The machine was built by
>cincinatti millicron in 1982, if that helps any. I currently has tach
>mounted on the motor shaft, and a gear driven resolver. I had planed
>to remove both of these items and would have plenty of room for a
>encoder. Could I use some sort of gear drive or small timing belt
>drive for the encoder to get the ratio correct? I do not want to
>change the screws as I was told that this machine has less than 500
>hours on it. It was used as a project at a university, they
>experimented with the control system. I bought the iron when they were
>done. This is my last hurdle to
>getting it running again. I think! Thanks again for the help. Don B