机械5

名爵汽车底盘连接片倒装复合模具设计 摘要 本文论述了冲压技术的过去、现状及发展趋势；对底盘连接片工件的冲裁工艺性进行了详细的分析；结合工件外形及结构特点设计了一副倒装复合模具。在本副复合模具中，为使工件成型，通过冲孔落料的方式完成工序。在利用已有零件图的情况下，基于工件的工艺性分析设计了工件的排样图，进行了冲压工艺力的计算，完成了冲裁凸、凹模刃口尺寸的计算，同时设计了冲裁复合模具的具体结构，完成了模具装配图及零件图的绘制，合理选取曲柄压力机并完成其校核分析。 关键词：底盘连接片；倒装复合模；冲裁 ABSTRACT This paper discusses the past, curre
nt situatio
n a
nd developme
nt tre
nd of stampi
ng tech
nology, a
nalyzes the stampi
ng tech
nology of the co
n
necti
ng piece of chassis i
n detail, a
nd desig
ns a pair of i
nverted composite die combi
nedwith the shape a
nd structural characteristics of theworkpiece. I
n this composite die, i
n order to make theworkpiece formi
ng, the process is completed by pu
nchi
ng a
nd bla
nki
ng. I
n the case of usi
ng the existi
ng part drawi
ng, based o
n the process a
nalysis of theworkpiece, the layout drawi
ng of theworkpiece is desig
ned, the stampi
ng process force is calculated, the cutti
ng edge size of pu
nch a
nd die is calculated, a
nd the specific structure of the bla
nki
ng compou
nd die is desig
ned, the drawi
ng of the die assembly drawi
ng a
nd part drawi
ng is completed, a
nd the cra
nk press is selected reaso
nably a
nd the checki
ng a
nalysis is completed. Keywords: Co
n
necti
ng piece of chassis； I
nverted compou
nd die； Bla
nki
ng 目录 第一章绪论1 1.2模具的现状1 1.3模具的发展展望2 1.4设计课题的主要内容及意义3 第二章工艺设计4 2.1工件描述4 2.2工件工艺分析4 2.3工艺方案确定5 2.4模具总体设计5 2.5零件排样6 2.6冲压工艺力的计算8 2.6.1冲裁力的计算8 2.6.2卸料力、顶件力的计算9 2.6.3关于压力中心的计算9 2.6.4凸凹模刃口尺寸计算9 2.6.5压力机公称压力的选取12 第三章模具零件详细设计13 3.1凹模结构设计及固定方式13 3.1.1凹模刃口形式13 3.1.2凹模的外形尺寸设计13 3.2凸模结构设计14 3.2.1凸模的结构形式14 3.2.2凸模长度的确定14 3.2.3凸模的固定方式15 3.3凸凹模的设计15 3.4推件块设计16 3.5导向零件设计17 3.6卸料零件的设计17 3.7其他零件17 3.7.1模座17 3.7.2固定板18 3.7.3垫板18 3.7.4螺钉和销钉18 第四章压力机校核19 4.1压力机选择19 4.2设备校核20 第五章模具装配图21 第六章模具经济性分析22 结束语23 致谢24 参考文献24