锻压技术

基于灰色关联理论的汽车前纵梁塑性成形工艺再设计

英文标题：Redesign of plastic forming process for automotive fore-carling based on

作者：田植诚王成勇李伟李亨张贺宁

单位：合肥工业大学

分类号：

出版年,卷(期):页码：2014,39(1):46-51

摘要：

研究了汽车V形前纵梁的成形性，对比分析两种压料面工艺补充方案，建立了倒装单动拉深有限元模型。根据数值模拟结果，以压边力、摩擦系数、接触间隙、冲压速度为自变量设计了四因素四水平的正交试验模型，构造了最大增厚量、最大减薄率、最大回弹量与成形质量的关联函数。利用灰色关联分析法获得了多工艺参数对目标函数的关联度，并计算了目标函数的最优解，进而确定了一组最优工艺参数组合。再将最优工艺参数组合代入有限元模型进行模拟验证，较好地解决了起皱、破裂、折叠、局部过渡减薄等缺陷。最后依据几何位移修正回弹法对局部回弹进行了补偿，对模具型面进行了合理的设计变更。生产现场试模显示产品合格，缩短了传统试错法反复试模的时间。

The formability of the automotive V-shape beam was researched. Two kinds of designs of the addendum for the binder surface were analyzed. The FEM model was established with the inverted assembling structure of the forming die. According to the results of the numerical simulation, the blank holder force, friction coefficient, clearance between die and punch and punch velocity were used as independent variables in the orthogonal experiment. The correlation function of forming quality was designed with the independent variables of the maximum increased thickness, maximum reduction ratio and maximum springback amount.The relational grade of various stamping parameters to relevant objective functions were acquired, the optimized forming parameters were found out using gray relational analysis, and the optimal solution of objective function was calculated,then the optimized forming parameters were input into the FEM model to verify the product defects of wrinkling, rupture, folding, local thinning and soon. Finally the local spring-back was compensated according to the spring-back correction method of geometric displacement and the rational design for die face was changed. Identification by on-site mold testing, the end-product was qualified and the forming process was redesigned with less time than the traditional trial-and-error method.

基金项目：

家自然科学基金面上项目（51275146）;教育部科学研究重大项目（311025）;安徽省自然科学基金资助项目（1208085ME71）;省级重点实验室项目（2010sjsy0210）

田植诚（1988-）,男，硕士研究生

参考文献：

[1]陆宏，黄文.高强度钢板V形弯曲板厚方向压缩对回弹的影响[J].锻压技术,2011,36(4):56-58.

Lu Hong，Huang Wen. Effect of thickness direction compression on springback of high strength V-shape sheet[J]. Forging & Stamping Technology，2011，36(4):56-58.

[2]伍奴美，杨伯强. V型压料面在汽车覆盖件拉深模设计中的应用[J].中国机械工程，2008，19(22):694-699.

Wu Numei, Yang Boqiang. Application of V-shape binder surface to design of drawing die for auto cover panels[J].Chinese Journal of Mechanical Engineering，2008，19(22):694-699.

[3]朱取才，王成勇，田植诚，等. 汽车B柱加强板拉延筋优化设计[J]. 锻压技术,2012,37(6):26-30.

Zhu Qucai, Wang Chengyong, Tian Zhicheng, et al. Optimal design of half-open draw bead of B-pillar reinforced plate[J]. Forging & Stamping Technology，2013，37(6):26-30.

[4]Li H L，Joachim D. Study on hydro-mechanical deep drawing with uniform pressure onto the blank[J]. International Journal of Machine Tools ＆ Manufacture,2004,(44):495-502.

[5]陈继平，钱健清，李胜祗. 摩擦系数对圆筒形件拉深成形性能的影响[J]. 锻压技术,2011,36(5):36-38.

Chen Jiping，Qian Jianqing，Li Shengdi. Influence of different friction coefficients on deep drawing performance of cylinder cup[J]. Forging & Stamping Technology，2011,36(5):36-38.

[6] 邓明，吕琳. 基于正交方案的闭挤式精冲工艺参数优化[J]. 锻压技术,2011,36(6):107-109.

Deng Ming, Lu Lin. Parameter optimization of closed extrusion fine stamping process based on orthogonal scheme[J]. Forging & Stamping Technology,2011,36(6):107-109.

[7] 谢延敏，于泸平. 基于灰色系统理论的冲压成形稳健设计[J]. 上海交通大学学报,2007,41(4):596-599.

Xie Yanmin, Yu Luping. Application of the grey theory in stamping Robust Design[J]. Journal of Shanghai Jiao Tong University，2007，41(4):596-599.

[8]阳湘安，阮锋.车身覆盖件回弹控制的成形工艺多目标优化[J].上海交通大学学报,2011, 45 (11):1673-1677.

Yang Xiangan，Ruan Feng. Multi-objective optimization of forming process for auto-body panel based on springback control[J].Journal of Shanghai Jiao Tong University, 2011,45(11):1673-1677.

[9]Hein P, Becker H. Hydro-forming of sheet metal pairs[J]. Journal of Materials Processing Technology, 1999,(87): 154-164.

[10]阳湘安，阮锋. 模面几何修正修正的回弹补偿方向分析[J].塑性工程学报，2010，17 (2):6-10.

Yang Xiangan, Ruan Feng. Compensation direction for die-face adjustment based onspringback compensation[J].Journal of Plastic Engineering，2010，17(2):6-10.

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