State-of-the-art Engineering Equipment

EM-211.01 | Gear Tooth Form Apparatus

  • Length: 690 mm.
  • Width: 530 mm.
  • Height: 80 mm.
  • Weight: 13 kg.
Technical Specification
A bench top base plate contains all elements for this experiment. Three gears are located onto the base plate. A large gear and small gear mesh together and can be rotated to produce analysis of ratios. A third gear is removable to allow students to review its tooth form, pitch circle diameter (PCD) and other key geometry of a tooth form. The apparatus also explains the form of an involute curve and how this is used to create a gear tooth profile. To help describe what an involute curve is, paper can be placed into the apparatus and an involute curve drawn. A set of vernier calipers is provided to allow the removable gear to be measured to help give a practical analysis of the gear form. Labels are used on the unit to help clearly explain gear theory.
Experimental Capabilities
  • Experimental determination of shape and construction of an involute curve.
  • Explanation of Gear Form.
  • Explanation of Gear Ratios.
  • Explanation of Gear Modules.
  • Explanation of Gear Trains and Rotational Direction.
  • Bench or Wall mounted apparatus.
  • Two connecting gears supplied.
  • One gear for measuring.
  • Drawing of Involute Gear form.
  • Theory and terminology clearly labelled on unit.
  • Large (Mod 4) gears.
  • Large gear: 50 tooth, Module 4, 200mm PCD.
  • Small gear: 18 tooth, Module 4, 72mm PCD.
  • Removable gear module 12.5.