锻压技术

汽车前轮毂包中段零件拉延成形叠料缺陷的模具优化与Autoform应用

英文标题：Die optimization and Autoform application of overlap defect in drawing for middle section of automobile front hub package

作者：李林鑫任小鸿陈显均谭波

单位：四川化工职业技术学院

关键词：前轮毂包中段吸料筋叠料缺陷拉延成形模具结构

分类号：TG386

出版年,卷(期):页码：2020,45(2):188-193

摘要：

针对某品牌汽车前轮毂包中段拉延成形件生产过程中出现的叠料缺陷，改进了模具结构，提出了增设吸料筋的新方法，通过增设吸料筋吸收多余材料解决叠料缺陷，并利用Autoform软件对其进行了模拟成形仿真，分析了FLD、起皱参数，验证了模具改进结构的正确性，并确定了压边力参数。通过生产验证，得到的产品消除了原有的叠料缺陷，质量合格。通过实践结果可得出，采用增设吸料筋的方法消除叠料缺陷是可行的。同时，采用计算机有限元模拟技术，利用Autoform软件对拉延成形效果进行提前仿真模拟和预测，在一定程度上可以反映出真实拉延成形质量，有利于获得较好的工艺参数和模具结构，降低模具开发时间和经济成本。

For the overlap defect in the drawing process of middle section for a certain brand automobile front hub package, the die structure was improved, and a new method of adding suction ribs was proposed. Then, the overlap defect was solved by adding suction ribs to absorb surplus materials, and the drawing process was simulated by software Autoform. Furthermore, the FLD and the wrinkle parameters were analyzed, and the correctness of the improved die structure was verified to determine the parameter of blank holder force. Through the production verification, the original overlap defect of products was eliminated, and the quality was qualified. The practice results show that it is feasible to eliminate the overlap defect by adding suction ribs. At the same time, the drawing effect was simulated and predicted in advance by the computer finite element simulation technology and software Autoform, and the real drawing quality displays to a certain extent. Thus, the better process parameters and die structure are obtained, and the die development time and the economic cost are reduced.

基金项目：

四川省2018-2020年高等教育人才培养质量和教学改革项目（JG2018-1109）

李林鑫（1984-），男，学士，副教授，E-mail：179207987@qq.com

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