Re: [CAD_CAM_EDM_DRO] Taig retrofit servo motors

Dan,

Is that encoder mounting technique useable on the HP HEDS 6200? Two
holes at 1.811" ring circle. Also, what's your source for the HEDS?
I'd like to put them on Sherline's steppers, or Sanyo Denki 233-180-DU
motors.

Alan KM6VV

Dan Mauch wrote:

>
> Some time in early December I posted on the Sherline group my
> experience at putting a servo motor on a Sherline. I mentioned that it was
> running the X axis at 72 IPM at 25 lbs. force using a gecko drive and a
> small servo motor that I adapted to my nema 23 extrusions on the sherline.
> Unfortunately, I did not get a single comment until just recently. So I
> didn't persue making up a batch of these motors for the small machines like
> the taig, REX ,sherline and grissly. I spent a lot of time searching for a
> low cost motor that had the torque that I wanted good speed without it being
> excessive and having an appropriate CPR encoder. Most of the nice pittman
> motors have a gear ratio that is way to high with the 500 count encoders
> mounted one them and that combined with the .050 pitch of the leadscrew gave
> a 500X4X6x20=240,000 CPI. So I finally found a motor that had the torque
> and speed that I wanted with a ball bearing on the shaft. But the motor did
> not have provisions for an encoder on it so I had to design an adapter plate
> for the back of the motor to add a Agilent HEDS 5500 E 04 dual channel
> quadrature encoder. I modified a few more and will soon add them to the
> remaining axis. The resolution of this set up is 200X4X20=16000 CPI or
> .0000625"
> Dan
> -----Original Message-----
> From: Andrew Werby <drewid@...>
> To: CAD_CAM_EDM_DRO@egroups.com <CAD_CAM_EDM_DRO@egroups.com>
> Date: Thursday, January 11, 2001 10:44 PM
> Subject: [CAD_CAM_EDM_DRO] Taig retrofit
> >I had a similar idea; but I'm retrofitting a Taig with Geckos and servos.
> >I'll have to make new motor-mounts, since no servos seem to be made with
> >NEMA 23 mounts, but having closed-loop speed and accuracy should make it
> >worthwhile. I got my Geckos a couple of days ago- they sure are small! I'm
> >wondering how hot they get when in use? Should I be attaching them to a big
> >heat-sink and fanning them?
> >
> >
>
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