锻压技术

基于响应面法的齿轮轴模具磨损目标参数优化

英文标题：Optimization on wear target parameters for gear shaft mold based on response surface method

作者：何伟董万鹏孙礼宾孟翔耀朱越

单位：上海工程技术大学上海市激光先进制造技术协同创新中心上海交大中京锻压有限公司

分类号：TG315.2

出版年,卷(期):页码：2020,45(9):166-170

摘要：

为提高模具寿命，提出了利用响应面法(RSM)和有限元技术(FEM)相结合，以多目标锻造工艺参数为优化目标的优化方法。以齿轮轴预锻下模磨损量为优化目标，建立了有限元数值模拟与响应面法相结合的二阶响应面回归分析模型，求得该模型的拟合度为96.57%，并基于响应面目标函数求得最佳工艺参数组合为：始锻温度为1190 ℃、摩擦系数为 0.3以及模具硬度为54 HRC。通过Deform-3D数值模拟对目标参数进行了验证，得到磨损量为2.48×10-4 mm，根据允许最大磨损量0.5 mm，得到模具寿命为2016件，满足期望值2000+200-100件的生产要求，并基本符合生产验证所得的实际模具寿命2005件。

In order to improve the mold life, an optimization method was proposed by the combination of response surface method (RSM) and finite element method (FEM) with multi-objective forging process parameters as the optimization goal, and the second-order response surface regression analysis model combining finite element simulation and response surface method was established by taking the wear amount of pre-forging lower die for gear shaft as the optimization goal. Then, the fitting degree of the model was 96.57%, and based on the objective function of response surface, the optimal process parameters were obtained with the initial forging temperature of 1190 ℃, the friction coefficient of 0.3 and the mold hardness of 54 HRC. Furthermore, the target parameters were verified by numerical simulation software Deform-3D, and the wear amount was 2.48×10-4 mm. According to the the maximum allowable wear amount of 0.5 mm, the mold life was 2016 pieces, which met the production requirement of the expected value of 2000+200-100 pieces, and basically accord with the actual mold life of 2005 pieces obtained by production verification.

基金项目：

克拉玛依市科技重大专项（2018ZD002B）；科技援疆计划（2019E0235）；上海工程技术大学研究生科研创新项目（18KY0506）

何伟（1995-），男，硕士研究生 E-mail：1107632098@qq.com 通讯作者：董万鹏（1976-），男，博士，副教授 E-mail：dong@sues.edu.cn

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