INNOVATIVE SYNTHESIS OF EPICYCLIC GEAR TRAINS BASED ON KINEMATIC CHAIN WITH SINGLE JOINTS

摘要

Basic epicyclic gear trains and all kinds of compound gear trains (they all were called epicyclic gear trains in this paper) have been broadly applied in engineering practice because of their many advantages such as bigger transmission ratio, higher mechanical efficiency, compact structure, running reposefully, and so on. In this paper, kinematic chain (K.C.) with single-joint (S.J.) was applied to innovative synthesis of the epicyclic gear trains. Structure theory of mechanism and method of the innovative synthesis for the epicyclic gear trains are presented. Not only the epicyclic gear trains in common uses were obtained, but some new types of epicyclic gear trains that are got difficultly by means of conventional combination method were gained. Thereby, a new way has been offered for the innovative synthesis of the epicyclic gear trains, at the same time, a way has also been offered for practical application of some multi-link K.C. with S.J. Gained by using the theory of type-number synthesis of the K.C. with S.J.. Examples show that the method presented in this paper is right and feasible, and the method is efficient and practical for the innovative synthesis of the epicyclic gear trains.