Transactions of Materials and Heat Treatment

Title：Process analysis and numerical simulation on single drawing for automobile front floor

Authors： Weng Maorong Li Qiang Cao Miaolong

Unit： Zhejiang Industry and Trade Vocational College Zhejiang University of Science and Technology

KeyWords： front floor of automobile single drawing stamping forming numerical simulation

ClassificationCode：TG385.2; TG386.1

year,vol(issue):pagenumber：2015,40(5):48-51

Abstract：

For the example of single drawing process of the front floor for a certain small van, the material characteristics of drawing process were analyzed, and the simulation analysis of stamping process was carried out after the mathematical model being established. The analysis of orthogonal experiments was made by selecting three impact factors such as binder force, the gap between die and punch and draw-bead depth in stamping process parameters. The local minimum thickness of blank was regarded as the optimization target value in order to prevent cracking. The simulation results of stamping show that the series of impact factors are binder force, draw-bead depth, and the gap between die and punch respectively. The best optimization parameters of stamping process are confirmed by the binder force of 950 kN, the gap between die and punch of 0.84 mm, and the draw-bead depth of 6 mm. The actual production was tested and verified. The experimental results show that the forming surface of front floor is comparatively smooth without obvious microcracks. Although there are some folds in the transformation zone with large curvature, the stamping quality is completely satisfied with the design requirements of front floor.

Funds：

浙江省自然科学基金资助项目（LY13E050112）；浙江省科技厅公益技术研究项目（2013C32099）

翁茂荣（1961-），男，硕士，副教授

Reference：

［1］郭怡晖，马鸣图，张宜生,等. 汽车前防撞梁的热冲压成形数值模拟与试验[J]. 锻压技术,2013,38(3):46-50.Guo Y H, Ma M T, Zhang Y S, et al. Numercial simulation and experiment of hot stamping for front bumper of automobile[J]. Forging & Stamping Technology, 2013,38(3):46-50.
［2］焦明华, 于军涛, 解挺, 等.板材冲压成形回弹模拟的评述[J]. 锻压技术,2007,32(6):1-6.Jiao M H, Yu J T, Xie T, et al. Review on springback simulation in sheet metal forming [J]. Forging & Stamping Technology, 2007,32(6):1-6.
［3］段磊, 蔡玉俊, 莫国强,等.汽车覆盖件成形回弹仿真及模面优化研究[J]. 锻压技术,2010,35(6):34-38.Duan L, Cai Y J, Mo G Q, et al. Research on spring-back simulation and die surface optimization of automotive panel forming process[J]. Forging & Stamping Technology, 2010,35(6):34-38.
［4］田野,吕明达,黄余平. 汽车前门加强板冲压工艺参数优化[J]. 锻压技术,2014,39(12):35-38.Tian Y, Lv M D, Huang Y P. Parameter optimization of stamping process on auto front floor reinforcing plate [J]. Forging & Stamping Technology,2014,39(12): 35-38.
［5］Samuel M. Numerical and experimental investigations of forming limit diagrams in metal sheets [J]. Journal of Materials Processing Technology, 2004, 153-154:424-431.
［6］康永林.现代汽车板工艺及成形理论与技术[M].北京:冶金工业出版社,2009.Kang Y L. Theory and Technology Processing and Forming for Advanced Automobile Steel Sheets [M].Beijing: Metallurgical Industry Press,2009.

Service：

【This site has not yet opened Download Service】【Add Favorite】