锻压技术

基于AutoForm的汽车后门外板拉延分析与工艺参数优化

英文标题：Drawing analysis and process parameter optimization on automobile rear door outer panel based on AutoForm

作者：吴光辉

单位：娄底职业技术学院

分类号：TG386.1

出版年,卷(期):页码：2021,46(7):90-95

摘要：

以某无框汽车后门外板为研究对象，利用正交实验方案，以拉延变形时的最大增厚率和最大减薄率为研究指标，以拉延时的成形力、压边力、摩擦系数和模具间隙4个工艺参数为实验因子，在CAE软件AutoForm中按5个水平进行模拟仿真，考察各组实验结果的成形质量，并对结果进行极差分析，得出最优工艺参数组合。最后，根据最优组合的仿真结果，并结合现场经验，向主机厂反馈了产品改进意见。通过分析和改进，在标称压力为800 t的压力机上，采用压边力为1400 kN、模具间隙为0.77 mm、摩擦因数为0.15的工艺参数进行拉延加工，得到的车门外板无开裂和起皱缺陷，表面质量光整均匀，符合工艺要求，且明显缩短了设计周期和成本。

Taking the rear door outer panel of a frameless automobile as research object, using the orthogonal experiment scheme, taking the maximum thickening rate and the maximum thinning rate during drawing deformation as the research indicators and the four process parameters of forming force, blank holder force, friction coefficient and clearance between punch and die during drawing as the experimental factors, the simulation was carried out by CAE software AutoForm according to five levels, and the forming quality of each group of experimental results was investigated. Then, the results were analyzed by range, and the optimal combination of process parameters was obtained. Finally, based on the simulation results of the optimal combination and combined with on-site experience, the product improvement opinions were fed back to the Original Equipment Manufacturer (OEM). Through analysis and improvement, a drawing processing was conducted by a press with the nominal pressure of 800 t, the blank holder force of 1400 kN, the clearance between punch and die of 0.77 mm and the friction coefficient of 0.15 to obtain the rear door outer panel without cracks and wrinkles as well as the surface quality of smooth and uniform, which met the process requirements and significantly shortened the design cycle and cost.

基金项目：

作者简介：吴光辉（1979-），男，工程硕士，副教授，E-mail：16795495@qq.com

参考文献：

[1]苏友煌, 王军辉,冯怡爽,等.汽车内覆盖件无油冲压的数值模拟及工艺优化[J].塑性工程学报,2019,26(5):42-50.
Su Y H, Wang J H, Feng Y S, et al. Numerical simulation and process optimization of dry stamping for automotive interior cover parts[J]. Journal of Plasticity Engineering, 2019, 26(5): 42-50.
[2]辛国升, 张永波.基于AutoForm R7对顶盖后部外板成形性进行分析及回弹补偿研究[J].模具工业,2020,46(7):34-39.
Xin G S, Zhang Y B. Research on formability analysis and springback compensation of outer panel at the back of head cover based on AutoForm RT[J]. Die & Mould Industry, 2020, 46(7): 34-39.
[3]马鸣图, 游江海,路洪洲,等.铝合金汽车板性能及其应用[J].中国工程科学,2010,12(9):4-20,33.
Ma M T, You J H, Lu H Z, et al. Performance and application of aluminum alloy automotive sheet[J]. Strategic Study of CAE, 2010, 12(9): 4-20,33.
[4]王宏松, 罗涛,修辉平.汽车后围加强板多目标成形工艺参数优化[J].锻压装备与制造技术,2017,52(6):59-63.
Wang H S, Luo T, Xiu H P. Optimization of multi-target forming process parameters of automobile rear reinforcement plate[J]. China Metalforming Equipment & Manufacturing Technology, 2017, 52(6): 59-63.
[5]张向奎, 王洋,王长生,等.基于逆有限元法和网格映射的板材成型坯料优化[J].上海交通大学学报,2019,53(11): 1389-1394.
Zhang X K, Wang Y, Wang C S, et al. Blank optimization for sheet metal forming using inverse finite element method and mesh mapping[J]. Journal of Shanghai Jiaotong University, 2019, 53(11): 1389-1394.
[6]王志坚, 王佳乐,宋鸿武,等.局部热处理提高铝合金复杂零件成形性的模拟研究[J].塑性工程学报,2019,26(3):25-32.
Wang Z J, Wang J L, Song H W, et al. Simulation study on formability improvement of complex aluminum alloy parts through tailored heat treatment[J]. Journal of Plasticity Engineering, 2019, 26(3): 25-32.
[7]王昕, 张成祥,胡蓝,等.镍基合金火焰筒拉深成形工艺研究[J].塑性工程学报,2019,26(3):63-69.
Wang X, Zhang C X, Hu L, et al. Research on deep drawing of nickel based superalloy flame tube[J]. Journal of Plasticity Engineering, 2019, 26(3): 63- 69.
[8]秦建侯, 邓勃,王小芹.分析测试中的试验设计和优化方法——正交试验设计[J].分析试验室,1985,4(10):45-55.
Qin J H, Deng B, Wang X Q. Experimental design and optimization methods in analysis and testing 1-Orthogonal experimental design [J]. Chinese Journal of Analysis Laboratory, 1985,4(10): 45-55.
[9]陈俊安. 汽车尾灯安装加强件拉延成形工艺参数优化[J].锻压技术,2019,44(11):56-63.
Chen J A. Optimization on drawing process parameters of an automobile taillight installation reinforcement[J]. Forging & Stamping Technology, 2019, 44(11): 56-63.
[10]王庆阳，高梦迪，李磊，等. 冲压成形节能优化方法 [J].锻压技术，2019,44(6):134-144.
Wang Q Y，Gao M D，Li L，et al. Energy-saving optimization method of stamping [J].Forging & Stamping Technology，2019,44(6):134-144.
[11]白颖，李善良，段嘉庆，等. 拉深成形过程中不规则楔形深腔件的缺陷控制 [J].锻压技术，2019,44(10):49-55.
Bai Y，Li S L，Duan J Q，et al. Defect control of irregular wedge-shaped deep cavity during deep drawing process [J]. Forging & Stamping Technology，2019,44(10):49-55.
[12]周林, 张玉成. 汽车设计开发之同步工程浅析[J].西南汽车信息, 2018, (9): 17-22.
Zhou L, Zhang Y C. Analysis of synchronous engineering of automobile design and development [J]. Southwest Automotive Information, 2018, (9): 17-22.

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