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| 前围外板的冲压工艺设计及成形分析 |
| Design and Forming Analysis of the Stamping Process for Front Panel Part of Automobile |
| Received:May 21, 2014 Revised:July 01, 2014 |
| DOI：10.3969/j.issn.1674-6457.2014.04.007 |
| 中文关键词: 前围外板 数值模拟 工艺补充 拉延成形 |
| 英文关键词: front panel part numerical simulation addendum drawing forming |
| 基金项目: |
| Author Name | Affiliation | | HAN Yong-zhi | Anhui Jianghuai Automobile Co. , Ltd. , Hefei 230601, China | | XU Ying-qiang | Anhui Jianghuai Automobile Co. , Ltd. , Hefei 230601, China | | ZHANG Hai-zhou | Anhui Jianghuai Automobile Co. , Ltd. , Hefei 230601, China | | YU Bing-ding | Anhui Jianghuai Automobile Co. , Ltd. , Hefei 230601, China |
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| 中文摘要: |
| 目的 解决汽车覆盖件因为冲压变形复杂,成形工艺参数难以确定的问题。 方法 分析了汽车前围外板的成形工艺,研究了复杂型面拉深模具的型面设计,以有限元分析软件 AUTOFORM为平台,对其冲压成形过程进行了数值模拟。 根据模拟结果( 成形极限图、材料流动分布及材料变薄率) 对拉延型面及工艺参数进行了优化。 结果 所得零件材料最大减薄率为 17 . 3% , 在 SPCE( t = 0 . 8 mm) 材质减薄率安全范围内(18 . 7% ) ,消除了成形过程中的暗伤开裂风险,成形结果得到了大大改善。 结论 CAE 仿真能够预测零件成形过程中存在的缺陷,优化工艺参数,指导模具设计工作。 将优化结果用于指导实际生产,得到了符合质量要求的拉延零件。 |
| 英文摘要: |
| Objective Aiming at solving the problems of automobile panel such as complicated deformation during stamping process and uncertainty of forming technical parameters. Methods This paper analyzed the forming process of the front panel part of automobile, and discussed the surface design of complex drawing die. The stamping forming process of a front panel part was numerically simulated based on the finite element software AUTOFORM. According to the simulation results ( the forming limit diagram, flow distribution and material thinning rate) , the drawing surface and the process parameters were modified and optimized. Results The maximum thinning rate of the part material was 17. 3% , within the security range of SPCE ( t = 0. 8 mm) material thinning rate ( 18. 7% ) , and the defects in the forming process were eliminated,which largely improved the forming results. Conclusion CAE simulation could predict the defects existing in the forming process of parts, optimize the process parameters, and guide the die design. When the optimized results were applied to practical production, the eligible drawing parts were obtained. |
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