Re: Motor/Leadscrew Couplers

"Oldham" couplings tend to be cheaper & work just fine. Even possible
to make your own.

Regards,
Tony

--- In CAD_CAM_EDM_DRO@y..., Marv Frankel <dcdziner@p...> wrote:
> Guys,
> The coupling pictured can be ordered from
www.mcmaster.com , and is
> called a Helical Beam Coupling. There are other flex couplings in
their
> catalog that may work as well.
>
> Marv Frankel
> Los Angeles
>
> ----- Original Message -----
> From: "George Erhart" <erhart01@e...>
> To: <CAD_CAM_EDM_DRO@y...>
> Sent: Friday, November 22, 2002 4:58 PM
> Subject: 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@a...>
> > To: <CAD_CAM_EDM_DRO@y...>
> > 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
> > >
> > >
> > >
> > > Addresses:
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> >
> > OFF Topic POSTS: General Machining
> > If you wish to post on unlimited OT subjects goto:
> aol://5863:126/rec.crafts.metalworking or go thru Google.com to
reach it if
> you have trouble.
> > http://www.metalworking.com/news_servers.html
> >
> > http://groups.yahoo.com/group/jobshophomeshop I consider this
to be a
> sister site to the CCED group, as many of the same members are
there, for OT
> subjects, that are not allowed on the CCED list.
> >
> > NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY
POSTING THEM.
> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> > bill
> > List Mom
> > List Owner
> >
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >