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

I have popped the motors in a lathe before, drilled and taped the end, then
bolted a stub on with some locktight.

You can normally get it pretty true if your careful with your turning, you
can run the motor and hand work the stub afterwards with a graver if there's
any slight error, or spin the motor on a lathe with the body held in the
steady so it runs tru in the motor bearings to finish it off. Make sure you
use a flex coupling to the encoder, even on motors with tail shaft stubs
from new.

I have seen others join the stub in with a V, or filled slot to stop it
turning, but locktight and hi tensile socket cap head seems to work, glues
it all to the screw.

Make sure you motor doesn't have a thrust bearing on the end, if it's a
roller bearing your OK, but some motors have a single ball thrust bearing
which might cause an issue.



Regs Mark



Dr. Mark Vaughan Ph'D. B.Eng. M0VAU

Managing Director

Vaughan Industries Ltd, reg in UK no 2561068

Water Care Technology Ltd, reg in UK no 4129351

Addr Unit3, Sydney House, Blackwater, Truro, Cornwall, TR4 8HH, UK.
Phone/Fax 44 1872 561288

RSGB DRM111(Cornwall)

_____

From: CAD_CAM_EDM_DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of jerryflyguy
Sent: 26 April 2007 22:08
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Adding a Tail shaft to servo's with no tail shaft



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..

Thanks guy's

Jarrett





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