Fundamental Analysis of Cycloid Ball Reducer (3rd Report)

Strength Design

Abstract

The Cycloid Ball Reducer has been developed for use.for servo mechanism elements. Motion principle of the reducer has been analyzed, and it becomes clear that there is the optimal value of trochoid factor which affects on pressure angle and radius of curvature. In this report, the fundamental design parameters of Cycloid Ball Reducer are investigated and derived, to adapt external type reducers with trochoidal groove or teeth. The strength of trochoidal groove for this reducer is analyzed using Hertz's theory. It is proved that the strength of reducer is influenced on center distance modification factor, ball diameter factor, ball number and module of this reducer. As the results, one of the design method that is based on theoretical strength, can be shown. Also, this method is able to evaluate the allowable load torque for this reducer.