Transactions of Materials and Heat Treatment

Title：Design on integrated die of blanking and bending with double floating mechanism for automobile outer plate

Authors： Ding Yiwen Wang Jun

Unit： Zhengzhou University

KeyWords： double floating mechanism ripple blanking beveled edge bending springback blanking burr

ClassificationCode：TG385；TG386

year,vol(issue):pagenumber：2020,45(6):146-151

Abstract：

The production mode of stamping parts for automobile outer plate is to roll the required profiles first, and then cut them by the stamping die and bend their cross sections straightly at the same time. For the latter, two processes of blanking and bending at the same position were realized by double floating mechanism. In order to effectively solve the problem of blanking burr, the shapes of punch and die edges were designed according to the trend of profile section to achieve collaborative blanking with the profile, and the punch and die of blanking were designed as ripple beveled edge structure to reduce blanking force. Then, for discharging waste smoothly, the local part of punch was designed as a triangular shape with convex edges to realize sectional blanking without die waste. In the view of straight edge bending at the notch after blanking, there was a bending tumor at the outer corner of notch，so the partial blanking-straight bending-complete blanking mode was adopted. For bending springback greater than 90°, the springback angle was controlled by negative angle correction-transition correction of punch edge. Finally, the integrated die of blanking and bending was completed and put into production to meet the relevant industrial requirements of production for stamping parts.

Funds：

丁艺闻（1999-）女，本科 E-mail：whs_2012@126.com 通讯作者：王俊（1984-），女，博士，副教授 E-mail：wangj@zzu.edu.cn

Reference：

［1］曹亚东，罗亮.汽车冲压件成本核算方法研究
［J］.汽车实用技术，2018,（24）：283-285.

Cao Y D,Luo L.Research on cost accounting method of automobile stamping parts
［J］.Automobile Applied Technology, 2018,（24）：283-285.

［2］苟春梅, 吴民,董静,等. 汽车冲压件工艺参数优化及回弹控制
［J］.锻压技术，2018,43（2）：34-37.

Gou C M,Wu M,Dong J,et al. Process parameter optimization and springback control of automotive stamping parts
［J］. Forging & Stamping Technology，2018,43（2）：34-37.

［3］王孝陪. 冲压手册
［M］．北京：机械工业出版社，1988.

Wang X P. Stamping Manual
［M］．Beijing: China Machine Press,1988.

［4］郭成，储家佑.现代冲压技术手册
［M］．北京：中国标准出版社，2005.

Guo C,Chu J Y. Modern Stamping Technology Manual
［M］. Beijing: Standards Press of China，2005.

［5］丁艺闻. 压缩机固定板成形工艺分析与模具设计
［J］.模具工业，2019,（8）：31-34

Ding Y W. Analysis of forming process for compressor fixed plate and the die design
［J］.Die & Mould Industry，2019,（8）：31-34.

［6］李兵, 拾以超,章芳芳. 基于正交试验的板料预切冲裁断面质量优化
［J］.锻压技术，2018,43（4）：60-63.

Li B, Shi Y C,Zhang F F. Optimization on cross section quality of pre-cut blanking based on orthogonal test
［J］. Forging & Stamping Technology，2018,43（4）：60-63.

［7］吕琳, 匡青云,汪义高,等.齿板精冲时的齿顶开裂分析及控制策略
［J］.锻压技术，2018,43（11）：17-23.

Lyu L,Kuang Q Y,Wang Y G,et al. Analysis and control strategies on tooth top cracking during fine blanking for tooth plate
［J］. Forging & Stamping Technology，2018,43（11）：17-23.

［8］于汇泳，孙亚维，丁鹏. 新型冰箱门壳成形工艺及模具设计改进
［J］.热加工工艺，2013,42（15）：143-144.

Yu H Y,Sun Y W, Ding P. Forming technology and die design improvements of new refrigerator door shell
［J］.Hot Working Technology，2013,42（15）：143-144.

［9］谢晖，唐长民，程威，等.多弯角零件冲压回弹控制方法的研究
［J］. 塑性工程学报，2018, 25（1）：22-27.

Xie H,Tang C M,Cheng W, et al. Study on stamping springback controlling of parts with multi-fillet
［J］. Journal of Plasticity Engineering，2018, 25（1）：22-27.

［10］覃智广，陈洪容，代艳霞. 冲压速度对车身钢板 U型弯曲回弹的影响
［J］.锻压技术，2018, 43（10）：72-75.

Tan Z G,Cheng H R,Dai Y X. Influence of punching speed on springback in U-bending process for auto-body steel sheets
［J］. Forging & Stamping Technology，2018, 43（10）：72-75.

［11］刘俊, 丁子祈,韩先洪. 金属薄板单轴弹塑性屈曲变形与回弹的几何参数研究
［J］.锻压技术，2019,44（6）：24-29.

Liu J,Ding Z Q,Han X H.Study on geometric parameters of uniaxial elastoplastic buckling deformation and springback for sheet metal
［J］. Forging & Stamping Technology，2019,44（6）：24-29.

［12］韩江，窦龙龙，夏链，等. 基于径向基函数近似模型的板料自由折弯成形回弹预测
［J］. 锻压技术，2019,44（6）：30-35.

Han J，Dou L L，Xia L，et al.Springback prediction of sheet metal free bending based on approximation model of radial basis function
［J］. Forging & Stamping Technology，2019,44（6）：30-35.

Service：

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