Subject:
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Re: Mechanical Indexing Drives
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Newsgroups:
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lugnet.robotics
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Date:
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Sat, 27 Jul 2002 19:13:45 GMT
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Viewed:
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663 times
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In lugnet.robotics, sjbaker1@airmail.net writes:
> Iain Hendry wrote:
>
>
> > > > Has anyone done any type of indexing drive, say, where a carousel is
> > > > driven intermitently, with dwell, from a continuously-rotating input
> > > > shaft?
>
> Here is a nice Geneva escapement done in Lego:
>
> http://home.insight.rr.com/worldof/lego/gen_whl_esc/index.html
>
> I used this quite successfully - although it is rather bulky.
>
> ----------------------------- Steve Baker -------------------------------
Great job Steve!! I *KNEW* someone must have built one already!
As soon as I saw Iain's post I started thinking about it, and quickly
built one. Although not as pretty or sturdy as Steve's, it works
nonetheless. Since I don't have access to a digital camera right now,
I built a simplified version of it in LDRAW. Mainly it's missing axles
and a few liftarms compared to my physical model. The distance between axle
centers is 7 studs, which does create some friction. It relies on the
4x4 round bricks
http://www.bricklink.com/catalogItem.asp?PartID=2577,
and is therefore not a purely-technic solution.
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=22244
(probably not public yet)
John
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Message has 1 Reply:
 | | Re: Mechanical Indexing Drives
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| (...) I should make it clear that this isn't my invention - I just remembered the URL for it. ---...--- Steve Baker ---...--- Mail : <sjbaker1@airmail.net> WorkMail: <sjbaker@link.com> URLs : (8 URLs) (22 years ago, 18-Jul-02, to lugnet.robotics)
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Message is in Reply To:
| | Re: Mechanical Indexing Drives
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| (...) Here is a nice Geneva escapement done in Lego: (URL) used this quite successfully - although it is rather bulky. ---...--- Steve Baker ---...--- Mail : <sjbaker1@airmail.net> WorkMail: <sjbaker@link.com> URLs : (8 URLs) (22 years ago, 18-Jul-02, to lugnet.robotics)
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