Subject:
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Re: How to get non-circular movements?
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Newsgroups:
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lugnet.technic
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Date:
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Mon, 23 Aug 2004 17:13:04 GMT
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Viewed:
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3581 times
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>
> Long question: I'm trying to figure out how to drive an arm so that the tip
> traces out an oval or elliptical path. But using only standard technic parts,
> I'm stumped. Gears and wheels obviously move in perfect circles, as do anything
> attached to a cam at a fixed point. An arm attached to a gear and a pivot point
> sweeps out a circular arc. And a piston attached to either of those moves in a
> straight line, back and forth.
Greetings,
An "elliposgraph" aka "elliptic trammel" should be just what you need.
http://www.ies.co.jp/math/java/conics/toy/toy.html
Tom
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Message has 1 Reply:
Message is in Reply To:
 | | How to get non-circular movements?
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| Short question: how can I combine technic gears, arms, cams, etc. to make a motor-driven part that does not move in either a straight line, a circle, or an arc (i.e. part of a circle)? Long question: I'm trying to figure out how to drive an arm so (...) (20 years ago, 23-Aug-04, to lugnet.technic)
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