Mecanum Wheel MK2
by Zaggo, published
This design is now based on the (originally intended) 624 ball bearings. I was able to shrink the whole design, so the center wheel now fits on a standard Makerbot build platform and can be printed in one piece.
See my blog post at pleasantsoftware.com/developer/3d/2010/04/23/its-printable for more information on the project. This post also contains a video showing the assembly process.
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This is a near-perfect fit for a robot my students are working on. They used the uni-wheel as a template to draw their own.
This site and your drawings have helped focus the students on the concept of prototyping.
very nice project
what software did you use to design it? I wanna change motor shaft hole to different size, so I'd be more than glad for cad files ;)
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You need only one of both to build one Mecanum wheel. However, to build a chassis with omni-directional steering abilities, you'll need four Mecanum wheels, two "left" and two "right".
In addition to the center wheel, you'll need 16 "roller.stl" pieces. You might want to use Skeinforge's "Multiply" tool to print more than one roller per print.
You also need the following not (yet) printable parts:
8x M4x55mm bolt
8x M4 nut
8x 624 ball bearing
32x M4 washer
1x M3 nut
1x M3x3mm set screw (or M3x15 bolt, alternatively)
See pleasantsoftware.com/developer/3d/2010/04/23/its-printable for detailed build instructions.
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