Re: [CAD_CAM_EDM_DRO] Taig retrofit servo motors

The heds6200 is quite a bit different from the heds 5500 series that uses a
.850 pitch diameter pattern so the answer is not even close to having the
same method for adding them.
I have been buying mine from www.usdigital.com and FAI but FAI is out of
them.
Dan
-----Original Message-----
From: Alan Marconett KM6VV <KM6VV@...>
To: CAD_CAM_EDM_DRO@egroups.com <CAD_CAM_EDM_DRO@egroups.com>
Date: Friday, January 12, 2001 12:03 PM
Subject: 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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>
>Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the

discussion of shop built systems, for CAD, CAM, EDM, and DRO.

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