锻压技术

基于响应面法和NSGA-Ⅱ的车用行星齿轮成形工艺

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

作者：吴玥龚红英尤晋兰毅

分类号：TG386.1

出版年,卷(期):页码：2024,49(10):65-74

摘要：

针对企业需求，对行星齿轮及其挤压成形工艺进行研究。使用DEFORM软件建立了车用行星齿轮的三维模型，并通过有限元仿真模拟分析了坯料加热温度、模具预热温度、挤压速度和摩擦因数等对齿轮成形质量和模具磨损的影响，发现齿轮破坏程度和模具磨损值受挤压速度和摩擦因数的影响较小。以减小齿轮破坏和模具磨损为优化目标，采用正交试验设计和Box-Behnken响应面试验设计方法，结合DEFORM仿真结果和Design-Expert 8软件进行了试验方案优化，并建立了相应的二次响应函数。最终，通过MATLAB软件和NSGA-II遗传算法进行了多目标优化，确定了最佳工艺参数组合，并成功优化了行星齿轮挤压成形工艺，提高了生产效率和模具寿命。

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.

基金项目：

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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