Re: [CAD_CAM_EDM_DRO] Adding a Tail shaft to servo's with no tail shaft

Thanks Wayne, I'm leaning towards a interference or press fit of a stub'd shaft into a bored hole in the existing shaft.. as you say, chuck the armature, bore the tail, press in a extension and if need be machine back true.

The motor is the exact same as a servo motor of the same manufacture, just that it doesn't have the tail shaft.. I think it was used for running a conveyor or something that didn't need feedback as to its speed. I could go back to the manufacture and buy them direct from them w/ the proper tail shaft but they'd be over twice the money.. :-)

Jarrett

> jerryflyguy wrote:
> > I remember someone posting a process they went through to add a
> tail
> > shaft to a DC motor, thus making it possible to put an encoder
> on it. I
> > can't find the site in my huge pile of favorites, anyone ever
> done this
> > or remember the site I'm thinking of?? I've got my hands on
> some great
> > DC motor's but they don't have the tail shaft..
>
> I've done it a few times. I take the armature out of the motor,
> chuck
> it up in the lathe and support the end you need to fit the shaft
> with a
> fixed steady.
>
> Drill, ream, bond a shaft in with a high strength loctite. If
> you need
> to you can make the new shaft slightly oversize, and true to size
> in the
> same setup as soon as the loctite has gone off.
>
> If you are trying to use a standard DC motor, try to use one with
> a
> skewed rotor, they work better as servo motors.
>
> Wayne....