锻压技术

基于FEM的汽车用护罩零件的变压边力冲压技术

英文标题：Variable blank holder force stamping technology for automotive shield part based on FEM

作者：王亚

分类号：TG386.2

出版年,卷(期):页码：2022,47(8):41-46

摘要：

以某车用护罩零件为研究对象，通过Deform有限元软件对定压边力与变压边力两种加载方式对冲压成形的影响进行了研究。综合考虑护罩质量和模具寿命两项指标，结合灰色关联理论建立了优化目标函数，同时采用正交试验法，以上模在5个不同位置（下压0、10、20、30和40 mm）的压边力大小作为试验变量，进行了不同水平的试验研究，并通过极差分析法获得了变压边力的最优加载方式。模拟结果表明：与定压边力加载方式相比，变压边力加载方式更利于板料的流动，出现缺陷的概率更小，冲压件的成形质量更好，且相同条件下模具寿命更长，具体表现为冲压件的最大减薄率降低为22.85%、最大增厚率降低为7.85%、成形载荷降低为488 kN。经冲压试验证明，护罩零件质量稳定，可进行批量生产，最大减薄率和最大增厚率分别为23.00%和8.05%。

For an automotive shield part, the influences of two kinds of loading modes for constant blank holder force and variable blank holder force on stamping were studied by Deform finite element software, and considering the two indexes of shield quality and die life, the optimization objective function was established by combing with grey correlation theory. Then, at the same time, the orthogonal test method was adopted, and the blank holder force of upper die at five different positions (press amount of 0, 10, 20, 30 and 40 mm) was taken as the test variables, the test research at different levels was carried out, and the optimal loading mode of variable blank holder force was obtained by range analysis method. The simulation results show that compared with the constant blank holder force loading mode, the variable blank holder force loading mode is more conducive to sheet metal flow, the probability of defects is smaller, the forming quality of stamping parts is better, and the die life is longer under the same conditions, namely, the maximum thinning rate of stamping parts is reduced to 22.85%, the maximum thickening rate is reduced to 7.85%, and the forming load is reduced to 488 kN. The stamping test shows that the quality of shield parts is stable and can be mass produced, and the maximum thinning rate and the maximum thickening rate are 23.00% and 8.05% respectively.

基金项目：

河南省高校创新人才计划（2021PYCXRC01）

作者简介：王亚（1981-），男，学士，讲师，E-mail：wangya198102@163.com

参考文献：

[1]郑家贤. 冲压工艺与模具设计实用技术[M]. 北京：机械工业出版社, 2005.

Zheng J X.Practical Technology of Stamping Process and Die Design[M].Beijing：China Machine Press, 2005.

[2]谢晖, 黄康,陈建新,等.双层不锈钢消声器壳体冲压工艺CAE分析与优化[J].塑性工程学报,2018,25(2):1-8.

Xie H,Huang K,Chen J X,et al.CAE simulation and optimization of double-layer stainless steel muffler shell stamping process[J].Journal of Plasticity Engineering,2018,25(2):1-8.

[3]韩善灵, 王化楠,王志勇,等.压边圈随动无铆冲压连接工艺仿真分析及优化[J].山东科技大学学报：自然科学版,2021,40(2):103-110.

Han S L,Wang H N,Wang Z Y,et al.Simulation and optimization of movable blank holder clinching[J].Journal of Shandong University of Science and Technology：Natural Science,2021,40(2):103-110.

[4]王军伟, 靳塞特,蒋妍彦,等.436L不锈钢冲压起皱和颈缩缺陷分析[J].铸造技术,2020,41(4):381-383.

Wang J W,Jin S T,Jiang Y Y,et al.Analysis of stamping wrinkling and necking defects of 436L stainless steel[J].Foundry Technology,2020,41(4):381-383.

[5]代丽, 朱勇.汽车侧围外板表面缺陷分析及冲压工艺优化[J].锻压技术,2021,46(6):91-98.

Dai L,Zhu Y.Surface defect analysis and stamping process optimization on automobile side wall outer panel[J].Forging & Stamping Technology,2021,46(6):91-98.

[6]何光春, 庄凯,罗征志.基于FEM的微型汽车顶盖冲压成形分析[J].内燃机与配件,2019，(14):62-63.

He G C,Zhuang K,Luo Z Z.The stamp analysis of miniature automobile top cover based on FEM[J].Internal Combustion Engine & Parts,2019，(14):62-63.

[7]韩艳艳. 基于FEM的7075铝合金轿车发动机油管接头挤压过程的温度场分析[J].热加工工艺,2013,42(9):140-142，146.

Han Y Y.Analysis of temperature field of 7075 aluminum alloy oil line connector for car engine during extrusion process based on FEM[J].Hot Working Technology,2013,42(9):140-142，146.

[8]李骁, 郑松林,张振华,等.汽车门内板冲压成形起皱研究[J].热加工工艺,2014,43(7):154-158.

Li X,Zheng S L,Zhang Z H,et al.Wrinkling research on auto inner door in sheet metal stamping forming[J].Hot Working Technology,2014,43(7):154-158.

[9]尤彬波, 林楷,谢育涛,等.A柱加强板热成形拐角开裂起皱优化[J].锻压技术,2021,46(3):105-110.

You B B,Lin K,Xie Y T,et al.Optimization on wrinkle and crack at corner of A-pillar reinforcement panel in thermoforming[J].Forging & Stamping Technology,2021,46(3):105-110.

[10]蒋磊, 张雄飞,王龙,等.基于变压边力的侧围外板成形研究[J].精密成形工程,2020,12(6):157-163.

Jiang L,Zhang X F,Wang L,et al.Forming of side outer panel based on variable blank holder force[J].Journal of Netshape Forming Engineering,2020,12(6):157-163.

[11]吴艳云, 刘铭心,张东民,等.基于响应面法座椅撑板拉延成型工艺参数优化[J].中国科技论文,2017,12(22):2526-2530.

Wu Y Y,Liu M X,Zhang D M,et al.Optimization on drawing process parameters for seat support plate based on response surface method[J].China Sciencepaper,2017,12(22):2526-2530.

[12]张宏伟. 基于响应面的车用连接板拉延成形性能及优化[J].中国科技论文,2020,15(2):240-243.

Zhang H W.Drawing formability and optimization of vehicle connecting plate based on response surface method[J].China Sciencepaper,2020,15(2):240-243.

[13]梁强, 张贤明,贾艳艳.基于灰色关联分析的直齿轮冷挤压成形工艺参数优化[J].塑性工程学报,2021,28(1):69-76.

Liang Q,Zhang X M,Jia Y Y.Parameter optimization in cold extrusion process for spur gear based on grey relational analysis[J].Journal of Plasticity Engineering,2021,28(1):69-76.

[14]席奇豪, 樊文欣,吕伟,等.基于灰色关联度的强力旋压成形工艺参数优化[J].热加工工艺,2016,45(15):129-132.

Xi Q H,Fan W X,Lyu W,et al.Parameter optimization of power spinning forming process based on grey correlation degree[J].Hot Working Technology,2016,45(15):129-132.

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