锻压技术

汽车流水槽冲压工艺的数值模拟分析与试验

英文标题：Numerical simulation analysis and test on stamping process for automobile flow sink

作者：汤双清刘婷任寅迎

单位：三峡大学机械与动力学院

关键词：汽车流水槽冲压压边力拉延筋 Autoform

分类号：TG386

出版年,卷(期):页码：2021,46(12):61-66

摘要：

以某汽车流水槽为研究对象，应用Autoform软件对汽车流水槽的成形过程进行冲压数值模拟，并分析其成形工艺。分析了各工艺参数对汽车流水槽拉延工序的影响，通过将压边力从500 kN增加至800 kN，拉延筋系数从0.3增加至0.7等设置，预测了板料成形过程中存在的起皱、破裂等缺陷，确定了合理的压边力数值和拉延筋系数。模拟结果表明，该成形最大减薄率不超过0.25，成形区域起皱率不超过0.02，起皱率和减薄率均在合理范围内，消除了成形过程中可能出现的问题，使后续工序能够顺利进行。最后根据软件模拟进行了试验验证，所得零件和数值模拟结果基本一致，表面质量达到标准要求，验证了该冲压工艺参数的合理性，同时极大地提高了材料利用率，节约了成本，缩短了开发周期。

For a certain automobile flow sink, its forming process was numerically simulated by software Autoform, and its forming process was analyzed. Then, the influences of various process parameters on the drawing process of automobile flow sink were mainly analyzed, and the wrinkle, crack and other defects in the forming process of sheet metal were predicted by increasing the blank holder force from 500 kN to 800 kN and the drawbead coefficient from 0.3 to 0.7 to determine the blank holder force value and drawbead coefficient reasonably. The simulation results show that the maximum thinning rate of the forming does not exceed 0.25, the wrinkle rate of the forming area does not exceed 0.02, and the wrinkle rate and the thinning rate are within a reasonable range. Therefore, the problems that may occur during the forming process are eliminated, and the subsequent processes can be carried out smoothly. Finally, the test is carried out according to the software simulation, the obtained parts are basically same as the numerical simulation results, and the surface quality meets the standard requirement, which verifies the reasonableness of the stamping process parameters. And the material utilization rate is greatly improved, the costs are saved, and the development cycle is shortened.

基金项目：

国家自然科学基金资助项目(51175297)

作者简介：汤双清(1962-)，男，博士，教授 E-mail：tang_sq@ctgu.edu.cn 通信作者：刘婷(1997-)，女，硕士研究生 E-mail：2507980893@qq.com

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