Transactions of Materials and Heat Treatment

Title：Forming process of planetary gears for vehicles based on response surface method and NSGA-II

Authors： Wu Yue Gong Hongying You Jin Lan Yi

Unit： School of Materials Science and Engineering Shanghai University of Engineering Science

KeyWords： planetary gears extrusion forming die wear heating temperature extrusion speed friction factor

ClassificationCode：TG386.1

year,vol(issue):pagenumber：2024,49(10):65-74

Abstract：

For enterprises need, the planetary gears and their extrusion forming processes were studied, and the three-dimensional model of planetary gear for vehicles was established by software DEFORM. Then, the influences of blank heating temperature, die preheating temperature, extrusion speed and friction factor on the forming quality of gear and the die wear were analyzed by finite element simulation, and it is found that the gear damage degree and the die wear value were less affected by the extrusion speed and friction factor. Furthermore, with the optimization objective of reducing gear damage and die wear, the orthogonal test design and Box-Behnken response surface test design methods were adopted by combining with DEFORM simulation results and software Design-Expert 8 to optimize the test scheme，and the corresponding quadratic response function was established. Finally, the multi-objective optimization was carried out by software MATLAB and NSGA-II genetic algorithm, and the optimal combination of process parameters were determined, which successfully optimizes the planetary gear extrusion forming process and improves the production efficiency and die life.

Funds：

上海市自然科学基金资助项目（20ZR1422700）

作者简介：吴玥（1999-），女，硕士研究生,E-mail：wuyue0028@163.com;通信作者：龚红英（1974-）女，博士，教授,E-mail：ghyyw@163.com

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