Module

Opening Fibo Module

All 3D prints

Single-Tooth Involute Gears

  • PLA
  • Intermediate
  • High school

About this print

Three gears that each have only one tooth: heart-shaped involute plates stacked three high, 120 degrees apart, so one plate is always in contact. The two outer gears turn in opposite directions.

A surprising model for older students on gear tooth shape (the involute curve) and continuous contact.

Design by osamutake on Printables, shared under CC BY-SA 4.0. The files and photos are the designer's, unchanged.

Printing and using it

  1. Print the "printable" file and assemble.
  2. Turn one gear slowly and watch which plate is in contact.
  3. Ask: why would a single plate stop meshing?

Photos