Transactions of Materials and Heat Treatment

Title：Analysis of stamping process and die design for elastic clip

Authors： Sun Peng

Unit： Wuxi Institute of Technology

KeyWords： elastic clip progressive die stamping process die springback

ClassificationCode：TH12

year,vol(issue):pagenumber：2020,45(12):160-164

Abstract：

The elastic clip is 3D structure with high accuracy requirements and large batches which is produced by progressive die, but it is more difficult to formulate stamping process and design die. Therefore, the floating design was adopted to make the working end punch under the protected state because the small diameter punch for piercing was easy to break, and the guide pin was designed as a spring plug structure, which effectively avoided punching strip by mistake. Furthermore, the elastic ejection structure was set in the lower die for notch process to keep the area after notch process in a flat state, and the elastic limit structure was designed in the die template to produce relative displacement with the lower die of bending process so as to realize continuous stamping with opposite bending directions at different stations. In addition, the working part of bending die was designed to be locally convex so that the correction force was concentrated in the deformation zone. Finally, the compensation angle of 1° was designed in the die and adopting process measures such as negative clearance etc. were adopted to reduce springback and ensure the accuracy of part.

Funds：

江苏省难加工零部件工程技术研究开发中心（苏教科〔2018〕10号）

孙鹏（1976-），男，工学硕士，讲师 E-mail：16439450@qqcom

Reference：

［1］张正修, 张旭起. 冲模结构设计方法、要点及实例
［M］. 北京：机械工业出版社,2007.

Zhang Z X, Zhang X Q. Design Method, Key Points and Examples of Die Structure
［M］. Beijing: China Machine Press, 2007.

［2］王娟, 陈炜,杨继昌,等. 接触簧片级进模设计
［J］. 机械设计与制造,2008，（5）:206-208.

Wang J, Chen W, Yang J C, et al. Progressive die design of contact spring
［J］. Machinery Design ＆ Manufacture,2008，（5）:206-208.

［3］惠宏权, 杨贵方,屠召锋. 继电器簧片折叠成形工艺分析及级进模设计
［J］. 机电元件，2014，34（4）: 18-23.

Hui H Q, Yang G F, Tu Z F. Design of fold forming die and multiposition progressive die for relay reed
［J］. Electromechanical Components，2014，34（4）: 18-23.

［4］姜伯军. 压簧簧片级进模设计
［J］. 模具制造，2011，（3）:28-31.

Jiang B J. Design of progressive die for the compression spring reed
［J］. Die & Mould Manufacture，2011，（3）:28-31.

［5］潘阳准. 插头簧片精密多工位级进模设计
［J］.模具工业，2001，（5）:11-13.

Pan Y Z. The precise multiposition progressive die for reeds of connector plug
［J］. Die ＆ Mould Industry，2001，（5）:11-13.

［6］邹栋林, 谢黎明,孟玉喜. 插座簧片多工位级进模设计
［J］. 锻压装备与制造技术，2006，（6）:72-75.

Zou D L, Xie L M, Meng Y X. Design of the multiposition progressive die for reeds of connector jack
［J］. China Metal Forming Equipment & Manufacturing Technology，2006，（6）:72-75.

［7］李远瞻. 夹簧级进模设计
［J］. 模具工业，2005，31（10）:14-18.

Li Y Z. Design of the progressive die for collet
［J］. Die & Mould Industry，2005，31（10）:14-18.

［8］袁泉, 刘光超. 开关簧片冲压工艺分析及模具设计
［J］. 制造技术与机床，2014，（10）:150-152.

Yuan Q, Liu G C. Stamping process analysis and mould design of spring sheet of switch
［J］. Manufacturing Technology & Machine Tool，2014，（10）:150-152.

［9］庞芳. 接触簧片多工位级进模设计
［J］模具工业，2011，37（10）:32-36.

Pang F. Multiposition progressive die for contact spring
［J］. Die & Mould Industry，2011，37（10）:32-36.

［10］陈炜. 冲压工艺与模具设计
［M］. 北京：科学出版社, 2015.

Chen W. Stamping Process and Die Design
［M］. Beijing: Science Press, 2015.

［11］成虹. 冲压工艺与模具设计
［M］.第3版.北京:高等教育出版社,2014.

Cheng H. Stamping Process and Die Design
［M］. The 3rd Edition. Beijing: Higher Education Press, 2014.

［12］盛海云. 前夹簧级进模设计
［J］. 模具工业，2017，43（5）:39-43.

Sheng H Y. Design of progressive die for front collet
［J］. Die & Mould Industry，2017，43（5）:39-43.

Service：

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