Influence of friction on the force distribution at cycloidal speed reducer

Abstract

Cycloidal speed reducer belong to the generation of modern planetary gears. Their main features are: high transmission ratio, compact design, long and reliable working life, high efficiency, possibility of accepting big short-term overloads, wide application in various industries,... The main element of cycloidal speed reducer is certainly cycloid disc whose profile is equidistant of shortened epitrochoid. Analysis of the forces which act on the cycloid disc when friction is taken into account is presented in this paper. Comparative review of calculated forces in the presence and absence of friction is presented. The main conclusion arising from the results of of this study are that the phenomenon of friction has an important and unavoidable impact on the load distribution in cycloid speed reducer.