锻压技术

汽车座椅外侧板单动拉延成形工艺分析及优化

英文标题：Process analysis and optimization on single drawing for outer panel of automobile seat

分类号：TG386.1

出版年,卷(期):页码：2017,42(6):61-65

摘要：

以某型号汽车座椅外侧板为例，采用AutoForm软件对座椅外侧板拉延成形过程进行模拟分析，并根据分析结果预测出拉延过程中的拉裂风险。通过调整零件的圆角半径和修改局部结构，消除了开裂风险，降低了最大减薄率。为取得更好的成形效果，选取压边力、摩擦系数、冲压速度、凸凹模间隙4个重要成形工艺参数进行正交试验及参数优化，得出最优工艺方案为：压边力250 kN、摩擦系数0.13、冲压速度1000 mm·s-1和凸凹模间隙2.42 mm，最终零件的最大减薄率为24.33%，最大增厚率为6.54%。采用优化后方案进行实际拉深试模，得出零件的成形性能与有限元模拟结果一致，工件质量完全符合设计要求。

For the outer panel of automobile seat in a certain car, its deep drawing process was simulated by AutoForm software, and the cracking risk was predicted in the drawing process. Then, the cracking risk was eliminated and the maximum thinning rate was also reduced by adjusting the radius of parts and modifying the local structure. In order to obtain a better forming effect, the blank holder force, friction coefficient, stamping speed and clearance between punch and die were chosen as process parameters, and the orthogonal experiment was carried out to optimize the above process parameters. The simulation results show that the optimal deep drawing process parameters are blank holder force of 250 kN, stamping speed of 1000 mm·s-1,friction coefficient of 0.13 and the clearance between punch and die of 2.42 mm, with the max thinning rate of 24.33% and the max thickening rate of 6.54% obtained. Finally, the actual drawing test is conducted based on the simulation and orthogonal optimization. The forming property is in consistent with the finite element modeling results, and the part quality is completely satisfied with the design requirements.

基金项目：

企业横向项目（J2015-272）

张东民（1968-），男，博士，教授刘铭心（1994-），男，硕士研究生

参考文献：

［1］马国英，黄彬兵，苏春建，等. 汽车翼子板拉深成型模拟及工艺参数优化[J]. 锻压技术，2015，40(3):21-24.

Ma G Y, Huang B B, Su C J, et al. Simulation and parameters optimization of deep drawing for automobile fender[J]. Forging & Stamping Technology, 2015，40(3):21-24.

［2］傅旻，孔垂有，张勇. 汽车覆盖件成型中拉延筋的设计与数值模拟[J]. 机械设计与制造，2014，(2):239-242.

Fu M, Kong C Y, Zhang Y. Drawbead design and simulation of automobile panel forming[J].Machinery Design and Manufacture, 2014, (2):239-242.

［3］李正芳, 安治国, 卢飞. 某汽车零件多工步成形的工艺参数多目标优化[J]. 热加工工艺, 2015,44(17):92-94.

Li Z F, An Z G, Lu F. Multiobjective optimization of process parameters of multistep forming for automobile parts[J].Hot Working Technology, 2015,44 (17):92-94.

［4］陈吉清, 王玉超, 兰凤崇. 基于正交试验的汽车覆盖件冲压工艺参数优化[J]. 计算机集成制造系统, 2007, 13(12):2433-2440.

Chen J Q, Wang Y C, Lan F C. Optimization for stamping process parameters of automotive body parts based on orthogonal experiments[J].Computer Integrated Manufacturing Systems,2007，13(12):2433-2440.

［5］赵鸿金, 李涛涛, 杨正斌,等. AZ31镁合金板材轧制过程中边部物理场分布[J]. 稀有金属, 2016, 40(10):990-995.

Zhao H J, Li T T, Yang Z B, et al. Physical field distribution of AZ31 magnesium alloys plate edge in rolling process[J].Chinese Journal of Rare Metals, 2016, 40(10):990-995.

［6］严勇, 吴超, 胡志力,等. 汽车铝合金覆盖件成形数值模拟的各向异性屈服准则研究[J]. 塑性工程学报, 2016, 23(2):92-97.

Yan Y, Wu C, Hu Z L, et al. Anisotropic yield criterion for automotive aluminum panels forming numerical simulation[J].Journal of Plasticity Engineering, 2016, 23(2):92-97.

［7］李春友. 基于Autoform的加强板冲压工艺仿真与优化设计[J]. 热加工工艺, 2013, 42(3):90-93.

Li C Y. Simulation and optimization design on stamping process of reinforcing plate based on autoform software[J]. Hot Working Technology, 2013, 42(3):90-93.

［8］翁茂荣, 李强, 曹淼龙. 汽车前地板单动拉延成形工艺分析与数值模拟[J]. 锻压技术, 2015, 40(5):48-51.

Wen M R, Li Q, Cao M L. Process analysis and numerical simulation on single drawing for automobile front floor[J].Forging & Stamping Technology,2015, 40(5):48-51.

［9］宫晓峰, 于仁萍. 基于Autoform汽车后围上盖板拉延成形模拟应用[J]. 锻压技术, 2014, 39(4):149-153.

Gong X F, Yu R P. Application of drawing simulation for automobile reinforcement upper back based on Autoform[J].Forging & Stamping Technology, 2014, 39(4):149-153.

［10］刘鹏翔, 程培元, 胡一博. 基于AutoForm的滑门内板的拉延成形数值模拟研究[J]. 锻压装备与制造技术, 2016, 51(3):82-85.

Liu P X, Cheng P Y, Hu Y B. Numerical simulation on drawing process of sliding door inner panel based on AutoForm software[J].China Metal Forming Equipment & Manufacturing Technology, 2016, 51(3):82-85.

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