抄録
The movable tooth gear drives are categorized as those with movable tooth on their gear blank. There are two major kinds of movable tooth gear drive, one with local degrees of freedom gear tooth or the positions of the movable teeth relative to the gear blank (carrier) remains unchanged, and the other with revolute joint or sliding gear tooth. The first kind may be considered as an evolution from their predecessor of pin cycloildal gear drives and the second kind from their predecessor of harmonic gear drives. Because there are one or more moving pairs in movable tooth gear drives, the topological constructions can vary greatly. Many research works have been done in China since 1980's and a lot of new mechanisms for the movable constructions are patented [1]. In this paper, we summarized the characteristics of the conceptual developments of movable tooth gear drives and generate the atlas graph for the movable tooth gear drive. Two groups of design components are described in the paper, they are sleeve tooth gear drive, ball cycloid gear drive, sliding tooth gear drive, swing tooth gear drive and variable speed ratio movable tooth gear mechanism.
