TOOTH GEOMETRY DESIGN AND TWO-DIMENSIONAL FINITE ELEMENT ANALYSIS FOR A STRAIN WAVE GEAR WITH DOUBLE-CIRCULAR-ARC PROFILE

摘要

The mathematical model of a strain wave gear (SWG) composed of a flexspline (FS), an elliptical wave generator (WG), and a circular spline (CS) was developed and the performance was simulated by two-dimensional (2-D) finite element analysis. A rack cutter exhibiting a double-circular-arc normal section was utilized to generate the FS, and the conjugate CS was also developed based on the theory of gearing and enveloping equation. Computer program developed in Visual C+ + was completed for the geometry and 2-D mesh generation. The performances as well as the rotational motion of the SWG with double-circular-arc profile were simulated and investigated by 2-D finite element analysis.