The New Little Teeth Difference Planetary Gear Reducer Fuzzy Reliability Optimization Studies

On the basis of analyzing and discussing the structural weakness of Three-Ring Gear Reducer, this dissertation gives a new scheme of planetary gear reducer with few teeth difference. Through adequately making use of the theory of few teeth difference transmission, and alleviating disadvantages of libration, noise and over-heat, the novel gear reducer gives new way to meet the needs of the developing mechanical transmission.In this dissertation, kinetic analysis is presented by calculation and analysis, conclusion are drawn that the inertia force and moment of gear reducer can be completely balanced when phase difference among eccentricity of ring plates equals 180? Structure analysis is also presented on this novel gear reducer. Codes are programmed to decide modification coefficient of few teeth difference transmission, Finite element analysis is implemented on key part-internal gear ring plate by means ofANSYS.And based on traditional design, according to the design requirements and the working condition, a fuzzy reliability model is established by using principle of fuzzy mathematics and analysis of fuzzy reliability of gear reducer. Accordingly, the fuzzy-optimization model is changed to routine-optimization model. Optimization codes are also programmed to solve the problem.