Re: [CAD_CAM_EDM_DRO] Motor Couplers

At 09:18 07/01/2005, you wrote:

>Hi,
>
>My home converted mill uses belt drives to connect the motors to the
>ballscrews. I am trying to motorise a dividing head by directly coupling the
>motor to the wormshaft. So far my home made attempts have all suffered from
>alignment problems. What I want is a coupler that allows for some
>misalignment of the two shafts and has no (well minimal) backlash.What do
>people use? If homemade what is the design? If not homemade what type of
>commercial couplers work well in this application.

I use Oldham couplings - see:

http://rswww.com

and search on "Oldham" to get an idea what they look like. The coupling
consists of 2 hubs coupled via a plastic torque disc. Should be able to
source similar items in the USA too.

Not too hard to make your own, but a little care needed machining the slots
in the disc if you are to avoid backlash.


Regards,
Tony