Re: [CAD_CAM_EDM_DRO] Motor/Leadscrew Couplers

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@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
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@...>
> 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
> >
> >
> >
> > Addresses:
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>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
> Moderator: jmelson@... timg@... [Moderator]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> 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/
>
>