公开(公告)号：US20170343094A1

公开(公告)日：2017-11-30

申请号：US15681706

申请日：2017-08-21

Applicant: HIWIN TECHNOLOGIES CORP.

Inventor： Yi-Hung TSAI ,  Fung-Ling NIAN ,  Jhe-Hong WANG

IPC: F16H49/00

CPC classification number: F16H49/001 ,  F16H2049/003

Abstract: A method of making a strain wave includes the steps of a) providing a circular spline, a flexspline meshed with the circular spline, and an initial wave generator having an initial outer profile of a standard ellipse with a perimeter S0, and b) producing a modified wave generator rotatably fitted within the flexspline and having a modified outer profile with a perimeter S. A difference ES between the perimeter S of the modified outer profile and the perimeter S0 of the initial outer profile satisfies the equation ES=S−S0=0.1 m to 0.8 m, wherein m is the modulus of the flexspline. Through a special parameter design of the modified wave generator, the meshing ratio between the circular spline and the flexspline is increased, thereby improving the transmission accuracy and reducing the average load.