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Magnetic Worm Gear

by h-kimura, published

Magnetic Worm Gear by h-kimura Mar 27, 2013
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6745Views 746Downloads Found in Mechanical Toys
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Summary

I made a magnetic worm gear which is making use of steel-wire and magnets.

2013.04.16 Binary version of the STL file is added.

2016.04.06 The diameter of the hole in the worm gear is 10mm, sorry.

Instructions

Please prepare two shafts with 5mm diameter and eight cylindrical magnets with 5mm diameter and a steel wire with 1mm diameter and about 30cm length. Please fit the wire into the trench of the worm, and put the magnets to the holes of the worm wheel.

2016.04.06 The diameter of the hole in the worm gear is 10mm, sorry.

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Thing Info

6745Views 746Downloads Found in Mechanical Toys
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License

BSD License
Magnetic Worm Gear by h-kimura is licensed under the BSD License license.

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I am puzzled why the internal diameter of the worm is 10mm rather than 5mm. Anyone any ideas?

how much force can this work gear produce before skipping "teeths"

Nice magnetic worm gear drive. Now for the big challenge of finding a usable passive magnetic bearing. One may find the Holy Grail first. :-)

This is a brilliant frictionless gear, and got me thinking. 3D printed parts with a need for low friction (motors, moving parts, etc.) could really benefit from this. Imagine frictionless machines, with magnetic bearings instead of roller bearings.
No gears to strip, no need for high-resolution prints, no rubbing plastic to wear down or heat up at high RPMs!

How did you calculate the angles of the wire on the spool? Is there a slot to hold teh wire? Very clever idea!

The is no anchor for the end of the wire as I have printed the worm. However, it is an easy task to drill a hole to take the ends.

Neat! I have an urge to pass a current through that somehow, but I don't know where.

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