| The cycloid steel ball planetary transmission is a new precision transmission form,with a series of good application properties, such as no reverse error transmission,highbearing capacity, high efficiency, having a broad application prospect in the precisionmachinery. In this paper, based on the theory of single-stage cycloid ball planetarytransmission, the construction, drive principles, mechanical properties and transmissionefficiency of NN-type cycloid ball planetary transmission are deeply studied..Accordingto this, the fuzzy reliability for the overall size and transmission efficiency are optimized.The composition, drive principles and types of NN-type cycloid ball planetarytransmission are analysed in this paper. It's continuous driving conditions of the practicaltooth profile is theoretically studied. And the two meshing pairs' movment is alsoanalysed, coming to the ball's trajectory and the vector equation.of all balls' position.Based on the stress model, mechanical analysis and strength analysis of the twomeshing pairs are carried out. By using the fuzzy reliability theory, the contact fatiguestrength fuzzy reliability is calculated.Closed power flow of the NN-type cycloid ball planetary transmission is discussedand the four different types' closed power are analysed respectively to obtain conditionsof having no closed-power.The efficiency compositions of this reduer is researched andaccording to meshing power method, the the meshing efficiency is acquired.The mathematical model for fuzzy reliability optimization is established and withsmall size and high efficiency as the objective functions, utilizing the Multi-objectiveParticle Swarm Optimization method to carry on the fuzzy reliability optimized designfor the NN-type cycloid ball planetary transmission. Under the constraints, the bestparameters for the reducer are gainde at last. |
PDF Full Text Request