第42卷第4期 Vol. 42No.4
假压技木
FORGING & STAMPING TECHNOLOGY
汽车侧围外板A柱拐角起皱的分析及解决方案
关来德
（柳州职业技术学院机电工程系，广西柳州545006）
2017年4月 Apr.2017
摘要：汽车侧围外板零件是车身重要的冲压件之一，成形过程较复杂，拉深过程中易产生起皱、开裂等缺陷。针对汽车侧围外板A柱拐角部位的起皱、开裂向愿题，通过分析零件现场冲压工艺、A柱拐角部位变形特征和材料发生起皱的原因，建立有限元仿真模型，使用AUTOFORM模拟软件对原冲压工艺方案进行全程仿真，分析结果表明，在第3工序侧整形时拐角处的流水槽面发生严重起皱缺陷。系统研究了二次拉深工序中增加吸料筋和调整压边力对起皱、开裂的影响规律，并提出在侧围外板A柱拐角处增加吸料筋和调整压边力的整改方案。经现场生产验证了分析结果的准确性和修模方案的有效性。
关键词：冲压；侧围外板：A柱；起皱；AUTOFORM；吸料筋 DOI: 10. 13330/j. issn. 1000-3940. 2017. 04. 009
中图分类号：TG386
文献标识码：A
文章编号：1000-3940（2017）04-0050-05
Analysisand solution on cornerwrinklingof sidepanel A columnforautomobile
Guan Laide
( Mechanical and Electronic Engineering Department, Liuzhou Vocational & Technical College, Liuzhou 545006, China)
Abstract : The outer side panel is one of the important parts for the automobile body, and the forming process is complex. Therefore, the wrinkling and cracking defects are produced easily in the drawing process. For the wrinkling and cracking problems at the A column cormer areas of the side panel for automobile, through the analysis on stamping process of parts, deformation features of A column corner and cau-ses of material wrinkling, the original whole stamping process was simulated by AUTOFORM simulation software by establishing the finite element simulation model. The analysis results show that the water tank surface at corner occurs severe wrinkling defects in the process of shaping, namely the third process, Furthermore, the influences regulation of increasing suction rib and adjusting blank holder force on wrinkling and cracking in the second drawing process were researched systematically, and the solutions were proposed by increasing suc-tion rib and adjusting blank holder force at the comer of side panel A column. The accuracy of analysis results and the effectiveness of the die repaired project are verified by production.
Key words; stamping; side panel; A column; wrinkle; AUTOFORM; suction rib
随着我国汽车工业的快速发展及人们对汽车需求的提高，对汽车质量的要求越来越高。侧围外板收稿日期：2016-11-14；修订日期：20170210
基金项目：2015年度广西高校科学技术研究项目（KY2015YB401）
作者简介：关来德（1977-），男，硕士，讲师 E-mail:529288595@qq.com
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万方数据
是汽车外覆盖件的重要零部件，要求表面光顺平滑、轮廓线清晰，外观面无起皱、划伤、冲击线等表面缺陷。侧围外板形状复杂、成形难度大"，与其他零件搭接精度要求高，其中A柱拐角区域成形难度较大，此处容易出现叠料、起皱、开裂等缺陷，传统处理方法是根据经验对模具进行调整或研配，这种方法费时费力，存在风险。本文针对模具调试
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