摘要
通过分析LED散热体的结构、尺寸及特性要求与冲压成形工艺特征,将传统八级冲压成形工艺变革为四级冲压新工艺——拉深、反拉深、冲孔与反拉深、落料与缩口;基于DYNAFORM仿真软件,将上道工序的计算结果传递到下道工序的模拟计算中,对新工艺的4道工序进行仿真,仿真结果表明：成形零件厚度分布为1.985-2.451 mm,无拉裂现象,部分位置有起皱,但不影响其外观效果,最终的成形情况满足零件技术要求,四级冲压成形新工艺可以取代传统八级工艺。基于四级冲压新工艺,制定了四级工艺排样图;分析解决了四级级进模具的设计难点;设计了四级级进模具结构图,阐述了四级级进模具的工作原理;从理论上为企业对该零件的生产制造提供参考,以提高该零件的生产效益等。
By analyzing the requirements of structure, size and feature and the stamping forming process characters of LED heat dissipation body, the traditional eight stamping processes were changed to the new four stamping processes as follows ： drawing, redrawing, punching and redrawing, blanking and necking. Based on the simulation software DYNAFORM, the new four processes were simulated through transferring the calculation results of the former process to the next process of simulation calculation. The simulation results show that the thickness distribution of forming part is between 1. 985 and 2. 451 mm without cracking, some positions of forming part have wrinkles which do not affect the appearance. Eventually, the forming part meets the technical requirements, and the new four stamping processes can replace the old eight stamping processes. Based on the new four stamping processes, the four processes layout diagram was formulated, the design difficulties of four processes progressive mold were analyzed and solved, then the mold structure was designed and the working principle of the mold was expounded, which provided reference for the manufacture of the part for the enterprise in order to improve the production efficiency etc.
出处
《锻压技术》
CAS
CSCD
北大核心
2015年第8期107-113,共7页
Forging & Stamping Technology
基金
产学研合作项目(校企合作)
关键词
LED散热体
四级冲压新工艺
一道缩口
外支撑凹凸模
LED heat dissipation body
four stamping processes
one process of necking
outside support of concave and convex mold
