锻压技术

提高汽车拉延模具与零件贴合率的型面补偿方法及应用

英文标题：Surface compensation method and application for improving fit rate of automobile drawing dies and parts

作者：王辉金香凤傅杰刘莉滋

单位：重庆三峡学院机械工程学院重庆市轻合金材料与加工工程技术研究中心智能制造先导技术重庆市高校工程研究中心

分类号：TG386.1

出版年,卷(期):页码：2022,47(11):196-200

摘要：

针对汽车覆盖件拉延模具开发中研配周期长的问题，提出一种基于零件厚度变化和凸、凹模变形的模具型面补偿方法，以提高拉延模具试模中模面和零件的贴合率。首先，采用冲压成形软件对拉延工艺进行数值模拟，得到成形载荷和成形后零件的厚度变化情况；然后，将拉延成形分析得到的最大载荷信息映射到划分网格的三维实体模型中对模具进行静力分析，得到模具的变形位移；最后，借助ThinkDesign软件的GSM模块，依次用模具变形位移和厚度变化位移对模具型面进行补偿。并以汽车前隔板拉延模具为研究对象，进行模具型面补偿和实验验证，结果表明该方法可有效地提高拉延模具首次试模的贴合率。

For the problem of long research and development cycle in the development of drawing die for automobile cover panels, a die surface compensation method was proposed based on the variation of part thickness and the deformations of punch and die, so as to improve the fit rate of die surface and part in the drawing die trial. Firstly, the numerically simulation of drawing process was carried out by the stamping software, and the change of forming load and thickness of formed part were obtained. Secondly, the maximum load information obtained by the drawing analysis was mapped to the three-dimensional solid model which was divided into meshes, and the static analysis of die was performed to obtain the deformation displacement of die. Finally, with the help of the global shape modeling (GSM) module for software ThinkDesign, the die surface was compensated by the die deformation displacement and the thickness change displacement in turn. Furthermore, for the drawing die of automobile front bulkhead, the die surface compensation and the experimental verification were carried out. The results show that the proposed method can effectively improve the fit rate of drawing die in the first die trial.

基金项目：

重庆市教委科学技术研究项目（KJQN202101234）；重庆市自然科学基金资助项目(cstc2019jcyj-msxmX0505)

作者简介：王辉(1989-)，男，博士，讲师，E-mail：wanghui@sanxiau.edu.cn

参考文献：

[1]赵殿明, 王利,黄昭明,等. 多弯角车身钣金件多工位级进模设计与应用[J]. 锻压技术,2020,45(3):125-130.

Zhao D M, Wang L, Huang Z M, et al. Design and application of multi-position progressive die for multi-angle car body sheet metal parts[J]. Forging & Stamping Technology,2020,45(3): 125-130.

[2]Chen J, Xu D K, Xia G D, et al. Geometric compensation for automotive stamping die design integrating structure deflection and blank thinning[J]. The International Journal of Advanced Manufacturing Technology，2013, 66(9): 1449-1456.

[3]孙刚, 徐建军,白朋鹏,等. 汽车发罩外板冲压回弹补偿研究[J]. 锻压技术,2021,46(5):64-71,168.

Sun G, Xu J J, Bai P P, et al. Springback compensation research of stamping for automobile hood outer plate[J]. Forging & Stamping Technology,2021,46(5):64-71,168.

[4]李伟，秦兴喜，侯艳飞. 提高冲压模具型面研合率的措施[J]. 模具制造，2014, 14(9): 4-8.

Li W, Qin X X, Hou Y F. Improvement the qualified rate measures stamping die grind rate[J]. Die & Mould Manufacture， 2014, 14(9): 4-8.

[5]夏国栋. 汽车覆盖件冲压模具精细化设计的关键技术研究[D]. 上海: 上海交通大学, 2011.

Xia G D. Research on the Key Technologies for Accurate Design of Automotive Body Panel Stamping Die[D]. Shanghai: Shanghai Jiao Tong University, 2011.

[6]章爽滨, 付再兴,李磊.降低深冲件开裂风险的质量策略研究与实践[J].锻造与冲压,2021，(18):55-59.

Zhang S B, Fu Z X, Li L. Research and test of the reducing the risk of cracking of deep-drawing parts[J]. Forging & Metalforming,2021，(18):55-59.

[7]Keum Y T, Ahn I H, Lee I K, et al. Simulation of stamping process of automotive panel considering die deformation[J]. AIP Conference Proceedings，2005, 778(1): 90-95.

[8]王辉. 汽车冲压模具短周期开发关键技术研究[D]. 重庆：重庆大学,2017.

Wang H. Research on Key Techniques of Short Cycle Development of Automobile Stamping Die[D]. Chongqing: Chongqing University, 2017.

[9]黄罴, 唐雅,宾小林. 提升冲压模具型面研配质量及效率的方案分析[J]. 装备制造技术,2017，(12):136-139.

Huang P, Tang Y, Bin X L. Scheme analysis of improving quality and efficiency of stamping die profile[J]. Equipment Manufacturing Technology, 2017，(12):136-139.

[10]窦锦文, 苗德华,蔡玉俊.基于拉延减薄的汽车覆盖件模具型面补偿研究[J].模具制造,2011,11(3):7-10.

Dou J W, Miao D H, Cai Y J. Research on the compensation for the automobile panel die faces based on drawing thinning[J]. Die & Mould Manufacture,2011, 11(3):7-10.

[11]刘进军, 王一帆,贺立辉,等. 提高冲模研合率的方法与应用[J]. 模具工业,2019,45(8):14-17,23.

Liu J J, Wang Y F, He L H, et al. Methods to improve lapping-inrate of stamping die and the application[J]. Die & Mould Industry,2019,45(8):14-17,23.

[12]贾利然, 马恒源,周雄辉. 模具型腔数控加工时间的评估方法研究[J]. 模具工业,2017,43(5):7-13.

Jia L R, Ma H Y, Zhou X H. Study on the evaluation method of NC machining time for mould cavity plate[J]. Die & Mould Industry,2017,43(5):7-13.

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