Interesting Geared Device

by nicholasclewis, published

Interesting Geared Device by nicholasclewis Apr 23, 2010

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This is an interesting set of gears inspired by an illustration in a "Manual of Mechanical Movements." It has a big wheel with slots that a smaller gear wheel slides in.

The .prt files are Unigraphics files.

I originally made this during a class at the Solheim Rapid Prototyping Lab @ the University of Washington (Open3DP)

This is an entry in the Makerbot contest (http://blog.makezine.com/archive/2010/04/makerbot_giveaway.html)

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From Wikipedia: "The Geneva drive or Maltese cross is a gear mechanism that translates a continuous rotation into an intermittent rotary motion"

So this is not a Geneva Wheel because it transmits continuous rotation. :)

The book I found this in describes it as follows:

"Multiple Gearing" - a recent invention. The smaller triangular wheel drives the larger one by the movement of its attached friction rollers in the radial grooves

It is a geneva wheel. Just look at wikipedia and you will see this version of it.

Might have to make one! 8-)


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Print all four parts (I have included two versions of the little wheel, one with built in pegs and one that needs pegs, the picture shows one made with brass pegs)

Assemble as shown using screws, nuts, and washers.


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PrintTo3D on Apr 23, 2010 said:

Might have to make one! 8-)

MakerBlock on Apr 23, 2010 said:

Interesting - it looks like an upright geneva wheel mechanism. http://www.thingiverse.com/tag...

ZNahum on Dec 20, 2010 said:

It is a geneva wheel. Just look at wikipedia and you will see this version of it.