FIDGET TOY

HYPOID GEAR

3D Printed Play Mechanism

Challenge 
Incorporating movement and value of play into a mechanism of multi-component parts.

Constraints 
Achieve rotation
seamless dynamic piece
Palm size


Tools
Fusion 360
FDM printing
Blender
Rendering


Main Takeaways 
1. 
Movement and sensory input are essential for concentrating
2. These would probably not be a teacher's favorite
3. Always keep negative space between components

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Toy mechanism composed of two main hyperboloidal gears that interact with each other, triggered by a handle that rotates the pieces. The toy’s purpose is create a simple movement that relieves stress when used. It's created from the basis of two cylinders with shifted loop vertices at a shaft angle of 45 degrees, each side on the opposite direction to equally match each other. A small, fun toy to relieve stress during a short work break.

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The Math behind
it Hyperboloidal gears are essentially regular spur gears with their top and bottom twisted in the opposite directions.

Gear 3D model

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Prototypes

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