Flexible meshing type gear device having deflection meshing involute tooth profile

摘要

A flexible meshing type gear device has a rigid internal gear, a flexible external gear disposed inside the internal gear and a wave generator for flexing the external gear into an elliptical shape. One circle of curvature at the point of contact of the involute curve making contact at the meshing center position is made coincident with a tooth profile circle of curvature satisfying the Euler-Savary equation that applies between the tooth profile curvatures at the tooth profile contact points of speed change gears, and the other tooth profile circle of curvature of the equation is defined in the vicinity of the circle of curvature of the other involute curve.