Home » Minimal Tooth Number of Flexspline in Harmonic Gear Drive with External Wave Generator
Minimal Tooth Number of Flexspline in Harmonic Gear Drive with External Wave Generator
October 1, 2013
Wave generators are located inside of flexsplines in most harmonic gear drive devices. Because the teeth on the wheel rim of the flexspline are distributed
radially, there is a bigger stress concentration on the tooth root of the flexspline meshing with a circular spline, where a fatigue fracture is more likely to occur under the alternating force exerted by the wave generator. The authors' solution to this problem is to place the wave generator outside of the flexspline, which is a scheme named harmonic
gear drive (HGD) with external wave generator (EWG).