This document discusses terminology related to bevel gears, which are gears that mesh at an angle other than 90 degrees. It defines key terms used to describe bevel gears like pitch cone, cone center, pitch angle, and addendum angle. It also mentions miter gears, which are a type of bevel gear where the pitch angles are the same and both gears rotate at the same speed with matching dimensions and teeth.

1. BEVEL GEARS
Gaurang Deep

4. EXAMPLES

9. In Miter Gear
1. Pitch angles are same
2. Both Pinion and Gear rotate at same speed
3. Both have same dimensions i.e. addendum, Dedendum, Pitch circle
diameter, number of teeth and module

10. TERMINOLOGY OF STRAIGHT BEVEL GEARS.
(For Intersecting Shaft at Right Angles)

12. TERMINOLOGY BEVEL GEARS.
• Pitch Cone
• Cone Centre
• Cone Distance (Ao)
• Pitch Angle
• Addendum Angle
• Dedendum Angle
• Face Angle
• Root Angle
• Back Cone
• Back Cone Distance / Back cone radius

13. Virtual or Formative number of Teeth (Tredgold’s Approximation)

15. Note: Refer Hand written notes for Details notes and for the solution of
Both Numerical.
Reference:
Design of Machine Elements by V B Bhandari