Theoretical Analysis of Interference of Teeth in Strain Wave Gearing

波動歯車装置における歯の干渉の理論解析

Theoretical Analysis of Interference of Teeth in Strain Wave Gearing

Creators Ishida Takeshi

Creators Hidaka Teruaki

Creators Huang Shuiping

This paper deals with a theoretical analysis of the inteference in a strain wave gearing (commonly known as a harmonic drive), which is a compact, light-weight mechanical device capable of high speed reduction as well as high mechanical advantage in a single stage. The analysis is carried out in a plane perpendicular to the input and output axes, and in a no load state. The involute profiles of teeth are simplified to straight lines. When the flexible spline is deformed into an oval shape by the wave generator, it is assumed that a neutral line exists there, which maintains the same length as that prior to deformation. The number of teeth causing interference at the same time in a strain wave gearing is found by the analysis, which changes with a period of one pitch of the circular spline.

[ISSN]0372-7661

[NCID]AN00244228