锻压技术

轿车侧围外板局部褶皱的分析与解决

英文标题：Analysis and solution on local wrinkles for side frame outer panel of a car

作者：肖敬伟

分类号：TG386

出版年,卷(期):页码：2021,46(12):92-99

摘要：

为了提升汽车侧围外板的表面质量，寻求其局部门洞处表面褶皱问题的解决与控制方法。基于轿车某车型平台，结合实际生产经验、生产工艺，借助AUTOFORM软件分析发现：侧围外板C柱立面出现的褶皱问题，是由于其拉延工序存在回弹现象，并伴随整形工序制件出现局部多料而产生的，而整形凸模镶块触料点的位置错误更是加重了此缺陷。经过分析与讨论，最终通过调整OP10拉延工序的结构和造型、在下模缺陷处加工去量1.8 mm、上模对应铣破口、局部烧焊2 mm以上，以及转移OP40翻边冲孔工序中镶块与制件的接触点位置措施，成功地解决了侧围外板门洞C柱立面的褶皱问题，节约成本约160 万元，改善了工作环境，可以为汽车行业的侧围外板的质量提升提供参考。

In order to improve the surface quality of side frame outer panel for a car, the solution and control methods for the problem of local surface wrinkles around the door holes were researched. Then, based on a certain car platform, combined with practical production experience and process, with the help of software AUTOFORM analysis, it is found that the wrinkle problems in the vertical wall of C pillar for the side frame outer panel are caused by the springback phenomenon in the drawing process and the partial over-materials of part during the shaping process, and the wrong positions of the contact material point for the shaping punch insert aggravates the above defect. The analysis and discussion show that the wrinkle problems in the vertical wall of C pillar for the side frame outer panel are solved successfully by adjusting the structure and shape of OP10 drawing process, processing to remove 1.8 mm at the defect of lower die, milling crack at the corresponding position of upper die, local welding over 2 mm,and offsetting the contact material point position between insert and part in OP40 flanging-punching process, which saves costs about RMB 1.6 million, improves the working environment, and provides the reference for the quality improvement of side frame outer panel in the automotive industry.

基金项目：

吉林省教育厅科研产业处课题；吉林省高等教育学会课题（JGJX2021B32）；吉林省职业院校创新创业教育教学指导委员会课题（CXCYHZW2021003）

肖敬伟（1986-），女，学士，讲师 E-mail：371005515@qq.com

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