The Optimization Design Of The Planetary Gear Reducer Of Small Tooth Differece With The Biasing Crank Shaft

With the transferring of the manufacture mode from single and volume produce to varieties, we must shorten the production cycle and reduce the cost in mechanical designing, thus we can improve competitiveness in market and gain more occupation rate. So optimization and structural analysis in design are important for improving the quality and reducing the cost of the product. In reality, the planetary gear reducer with small tooth difference has larger transmission ratio and smaller volume, so there are more uses in mechanic. Then the optimization design and the structural analysis are important in its design. For those, this paper optimized the planetary gear transmission organization and analyzed the structure of the planetary gear reducer's block with biasing crank shaft. At last, the optimization design of this reducer was settled.Firstly, this paper introduced the structure of the planetary gear transmission organization. Secondly, this paper built a multi-objective optimization problem which made up with the volume function and the working pressure angle, analyzed the constrains which influenced the objective modal.In order to have the best result, this paper calculated this optimization problem with the optimal toolbox in MATLAB firstly, then used hybrid genetic algorithm. In this paper, transferred the multi-objective problem to a dual-objective problem by using the goal object method, transferred the constrain problem to a non-constrain problem by using the penalty function, programmed in MATLAB. At last, this paper got the best result from comparing the two results.In order to improve the intensity of the reducer, this paper analyzed the structure of the reducer block by the finite element method. The modal of this block was built in UG software, then put this modal in ANSYS from the combine ANSYS with UG. The static and mode state of the box were analyzed in ANSYS software. From analyzing the result, the structure of box was optimized and made more reasonable.