Subject:
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Re: ok, time for a stupid question...
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 19 Jan 1999 05:17:11 GMT
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Original-From:
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dave madden <dhm@paradigm.webvision.com#SayNoToSpam#>
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Viewed:
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1219 times
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=>Chris Stanley wrote:
=>>
=>> what exactly is the purpose of a differential gear? i've got several of
=>> them, i've seen them used in various projects, but i've never quite
=>> managed to figure out what they do.
Zachary A. Bourk" <zbourk@san.rr.com> replied:
=>
=>I believe it allows the two wheels attatched to one drive shaft to turn
=>at different rates, thus allowing the gear-motor system to corner
=>without skidding.
That's a common use in the real world. You can also make mechanical
adding and subtracting devices from them. Somebody posted a URL with
a picture of a Lego(r) system that takes rotary inputs A and B, and,
with two differentials and a few other gears, produces rotary outputs
(A+B) and (A-B), but I can't find it now. If you're interested, you
can probably find it in the archives, or I can build one and post
pictures.
d.
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 2 Replies:
 | | Re: ok, time for a stupid question...
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| (...) Indeed. There's a very cool hands-on display at the Exploratorium (for anyone fortunate enough to live within driving distance of San Francisco) that has a single motor input, and two wheel outputs. Motor runs, and both wheels turn at the same (...) (25 years ago, 19-Jan-99, to lugnet.robotics)
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Message is in Reply To:
| | Re: ok, time for a stupid question...
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| Chris: I believe it allows the two wheels attatched to one drive shaft to turn at different rates, thus allowing the gear-motor system to corner without skidding. -Zach (...) ---...--- Zachary Bourk UCSD, EE http:\\www.geocities...ystem\4968 (...) (25 years ago, 19-Jan-99, to lugnet.robotics)
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