Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 08, 2024 - September 11, 2024
The strain wave gearing was invented by Musser in the 1950s. This device has many advantages such as small size, lightweight, a large reduction ratio and a small backlash, so it is widely used in industrial robots and semiconductor manufacturing equipment. But design and strength analysis problems have not been solved completely since the complex deformation of the flex-spline used in the tooth engagements. In particular, strength analysis using models that consider balls has rarely been conducted. This study develops design software for strain wave gearing in the surrounding of AutoCAD. This software can make it possible to design the strain wave gearing automatically and reduce design calculation and drafting time significantly. Also, it makes it possible for less experienced designers to design the strain wave gearing freely. The developed software can also be used to study tooth meshing characteristics of the strain wave gearing. Strength analysis problem is also study in this paper by using SolidWorks' Simulation function, a 3D finite element method model that includes the flexible bearing balls is proposed to conduct tooth contact analysis of the strain wave gearing. Tooth surface pressure, principal stress at the tooth root of the flex-spline, and the surface pressure on the balls are analyzed.
