Alt-BEAM Archive

Message #05277



To: beam@sgiblab.sgi.com
From: "Andrew Miller" amiller@golden.net
Date: Tue, 13 Jul 1999 08:51:36 -0400
Subject: [alt-beam] Re: Nu(tating) Motor



> .
> This is from a sales brochure:
>
> The Morpac Nutating Motor is a unique development utilizing
the rotation of
> magnetic force, speed and a nutating gear to obtain low
speed/high torque

--8<---

>When the magnetic force has moved through
> 360', the rotor will have advanced one tooth since it has one
more tooth
> than the torroid gear. For example, if the torroid gear has
147 teeth and
> the rotor gear has one more, the motor provides 147:1 ratio.
With a 60 Hz
> line input, the magnetic force would rotate at 3600 rpm and
the rotor
> would rotate at 24.4 rpm (3600 -, 147)

--8<

On a similar note ...
harmonic drives produce the "one less tooth on the follower"
gear ratio as well..
these are also known as cup drives...Neat devices but $$$$ ..

http://www.sfnet.net/candycontrols/hdc_po.html

all4nw



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