筒形件拉深模具设计              
摘  要
本设计课题介绍了罩盖类拉深冲裁模具的结构设计及工作过程。针对零件挤切后口部呈尖锐刃口状现象，改进了模具结构，消除部分加工缺陷，体现了冲压工艺先进性和高效性,有一定的设计意义。通过对工艺零件的工艺分析及模具结构设计, 巩固所学的知识、熟悉有关资料,树立正确的设计思路,加强了对模具的整体认识,提高自己的实际模具设计工作能力。
本计运用了冲压成形模具设计的基本知识，首先对整个零件的了解分析工艺参数,冲压工艺性能,然后确定冲压模的结构形式，工零部件的设计与计算，拉深和切边在两个工序上完成，本副模具优点结构简单紧凑，易于加工维修，缺点取件可能不太方便。
关键词：工艺分析； 拉深成形；切边；模具结构；筒形件拉伸
 筒形件拉深模具设计              

 Abstract

The design issues on the category covers body covered crowded tensile shear modulus of the composite structure design and working process. Against cutting crowded parts after mouth was sharp blade-like phenomenon, improve the structure of the mold and eliminate some processing defects, embodies the nology Analysis and Die of the composite structure Design ,consolidate the knowledge acquired and are familiar with relevant information, establish the cstamping process advanced and efficient.So this design has a certain of significance. Through of the parts of the process Techorrect design ideas, the right to strengthen the overall mold and enhance awareness of their actual ability to mold design.
Total use of the stamping die design of the basic knowledge, the first part of the whole understanding、analysis of process parameters, stamping process performance, and then determine the structure of stamping die form, the design and calculation of the components, Drawing and trimming processes in a complete, the vice die advantages of simple structure compact and easy maintenance processing, shortcomings pick-up may not be convenient.
Keywords : Process Analysis; Drawing molding; Trimming; Die structure; Stretching Tube
目   录
1绪论………………………………………………………….….………………….1
1.1国内模具的现状和发展趋势…………………………………….….………..1
1.1.1国内模具的现状………………………………………………….. ...…….2
1.1.2国内模具的发展趋势……………………………….…………. ...……….2
1.2 国外模具的现状和发展趋势........……………………….……………….…3
1.3 筒形件拉深模具设计与制造方面........………………………. ……………4
1.3.1筒形件拉深模具设计的设计思路…………………………….........…. .5
1.3.2筒形件拉深模具设计的步骤……… ………………………..…. ………..5
 1.4毕业设计的主要目的……… ………………………..………………………..6
2拉深冲压件的工艺分析…………………….……………………………………..7
2.1拉深毛坯尺寸计算………………….………………………………....…….…7
2.1.1排样和材料利用率...………………….…………………...…..….……….8
2.2判断能否一次拉成……………………………………………….. ………. …9
2.3确定是否用压边圈……………………………………………….. ………. …9
2.4 制定首次拉深系数…………………………………………….. ………. ……9
2.5 确定拉深次数……………………………………………………....……. .….11
2.6 画出拉深工序图........……………………….………… ………...…..…. …14
3确定工艺方案……………………..….…… ………………….…......................15
4主要工艺参数的计算……………………..….…… …….……………………….16
4.1压边力的计算………………………………………………...…...…….........16
4.2拉深力的计算……………………………………………………....……. .….17
4.3冲裁力的计算……………………………………….. ...…….……………….17
4.4公称压力力的计算……………………………………………….. ………. …18
4.5模具工作部分尺寸计算……………………………………………………….18
4.5.1模具间隙…………………………………………………………………….18
4.5.2拉深模的圆角半径…………………………………………………………18
4.5.3凸凹模工作部分尺寸及公差…………………………………………….19
5 模具的结构设计….…………..…………………………………………………..20
5.1拉深模具………………………………………………………...…............... 20
5.2冲裁模具........…………………………………………...…...…….............20
6冲压设备的选用
6.1 设备选用…………….…………………….…………......…………............21
6.2校核…………….………………………………...………………………..…..21
7模具总装图……………………………...……...……….………………………..22
8模具主要组件的装配调试……..………………………….….. ….…………….24
8.1安装要求……………………………………….….....................................24
8.2拉深模的安装………………………………………………………………….24
8.3模具的调试……………………………………………………………………..25
结束语………………………….…………..……..……..……………….……........26
致谢……………………………….………….………..………………...…….........27
参考文献………………………….…………..……..……..……………….……....28

机械毕业设计|论文