Design and Investigation of an Asymmetric Logarithmic Spiral Gear Drive

Table 1

Calculation formulas of the tooth profile parameters.

Parameter	Computational formula
Process angle of convex tooth profile θ1
Terminal angle of convex profile θ2
Process angle of concave profile θ4
Terminal angle of concave profile θ5
Gear tooth thickness s
Space width e
Arc radius at the bottom of convex tooth profile rg1
Arc radius at the bottom of concave tooth profile rg2