Re: [CAD_CAM_EDM_DRO] Motor/Leadscrew Couplers

Check out the connector in the last photo on this E-bay ad: (scroll to the
bottom!)

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1780808054

This allows for the misalignment with a minimum of spring to
the connection. I have no clue where to order it from, but
I just ordered three of these units to put the motors on a sherline mill.

George

----- Original Message -----
From: "Kory Hamzeh" <kory@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, November 22, 2002 6:13 PM
Subject: [CAD_CAM_EDM_DRO] Motor/Leadscrew Couplers


>
> I'm kind of a newbie at this and I'm trying to interface the Frog to my
> lathe. The end of the leadscrew on my lathe has an external M8 x 1.25
> thread, about 8mm long. The stepper motor is a nema 23 with a 0.250"
> diameter shaft. I was wondering if the group members had suggestions on a
> good coupler design. I machined a "hard" coupler out of aluminum threaded
> one side to screw on the leadscrew and reamed on the other side for the
> shaft. Each side has a couple of set screws to hold it in place. I was
told
> that you don't want to use a hard coupler and I kind of believe it -- any
> slight misalignment of the motor causes the friction to go through the
roof.
>
> Any suggestion would be greatly appreciated!
>
> Thanks,
> Kory
>
>
>
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