Design of cycloid planetary gear drives with tooth number difference of two a comparative study on contact characteristics and load analysis

The cycloid planetary gear reducers are widely applied in automation machinery. Even having the advantages of high gear ratio, multiple contact tooth pairs and shock absorbing ability, enlargement of the power density of the drives is still the essential development work today. To this end, the concept of tooth number difference of two is proposed. The aim of the paper is to analyze systematically he influences of the design parameters on the loaded contact characteristic of such the cycloid planetary gear drives so as to evaluate the feasibility. These results are also compared with the conventional drive having tooth number difference of one.