Subject:
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Re: Mechanical pneumatic piston
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 8 Oct 2003 18:40:09 GMT
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Viewed:
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1488 times
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In lugnet.robotics, Philippe Hurbain wrote:
> >
> > You probably mean Leo's translational joint:
> >
> > http://carol.wins.uva.nl/~leo/lego/piston.html
> >
> > HTH
> > Mario
>
> Hi Mike,
>
> A version I built a long time ago from Leo's idea, using a standard motor:
> http://www.philohome.com/radarcar/gearcmd.htm
>
> Philo
I once built one of these, just to see how it worked. It's pretty ingenious. I
kept adding worm gears to see how big I could make it. Once you add more than
two, there's a big gap in between the gears and the end of the housing you build
for it. That means the worm gears can slide up and down the axle slightly and
separate the thread, which will either jam the mechanism or cause it to skip
over and over. I think you can fill that gap with one of the really thin old
bevel gears, but I never tried it.
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Message has 1 Reply:
 | | Re: Mechanical pneumatic piston
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| (...) Ah, that's it exactly! Thanks a lot. (...) Very interesting. Fairly small, and I imagine it moves pretty quick. Actually, in the application I want it for, it will be cranked by hand, so a motor isn't needed at all. (...) Hmm...I wonder why (...) (21 years ago, 9-Oct-03, to lugnet.robotics)
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