机械5

通风座冲压工艺分析及拉深模设计 摘要 冲压是通过模具对板材施加压力或拉力,使板材塑性成型,有时对板材施加剪切力而使板材分离,从而获得一定尺寸、形状和性能的一种零件加工方法。由于冲压加工经常在材料冷状态下进行，因此也称冷冲压。冲压加工的原材料一般为板材或带材，故也称板材冲压。冲压加工需要研究冲压工艺与模具两个方面的问题。冲压工艺可以分为分离工序和成形工序。而分离工序又有落料、冲孔、切断、切边、剖切等工序；成型工序又包括卷圆、扭曲、拉深、变薄拉深、翻孔、翻边、拉弯、胀形、起伏、扩口、缩口、旋压、校形等。 本次课题为通风座冲压工艺分析及拉深模设计，冲压加工的材料利用率较高，一般可达70%~85%，冲压加工的能耗低，由于冲压生产具有节材、节能和高生产率等特点，所以冲压件呈批量生产时，其成本比较低，经济效益较高。 关键词：冲压加工；通风座；冲压工艺；拉深模 Abstract Stampi
ng is a ki
nd of part processi
ng method, which ca
n make the sheet plastic formi
ng by applyi
ng pressure or pull through the mold to make the sheet plastic, a
nd sometimes separate the plate by applyi
ng shear force to the plate, so as to obtai
n a certai
n size, shape a
nd performa
nce. Because stampi
ng is ofte
n carried out u
nder the co
nditio
n of cold material, it is also called cold stampi
ng. The raw materials for stampi
ng are usually sheet or strip, so it is also k
now
n as sheet stampi
ng. Stampi
ng process
needs to study two aspects of stampi
ng process a
nd die. Stampi
ng process ca
n be divided i
nto separatio
n process a
nd formi
ng process. The separatio
n process i
ncludes bla
nki
ng, pu
nchi
ng, cutti
ng, cutti
ng, cutti
ng a
nd cutti
ng. The formi
ng process i
ncludes roll circle, twist, drawi
ng, thi
n
ni
ng, tur
ni
ng, fla
ngi
ng, be
ndi
ng, expa
nsio
n, u
ndulatio
n, expa
nsio
n, co
ntractio
n, spi
n
ni
ng, alig
nme
nt, etc. This subject is the stampi
ng process a
nalysis a
nd drawi
ng die desig
n for the ve
ntilatio
n seat. The material utilizatio
n ratio of stampi
ng is high, it ca
n reach 70%~85%, the e
nergy co
nsumptio
n of stampi
ng is low. Because the stampi
ng productio
n has the characteristics of material savi
ng, e
nergy savi
ng a
nd high productivity, the cost is low a
nd the eco
nomic be
nefit is high whe
n the stampi
ng parts are produced i
n batch productio
n. Key words stampi
ng process; ve
ntilati
ng seat; stampi
ng process; drawi
ng die 目录 摘要I 引言- 3 - 第一章、冲裁件的工艺性分析- 4 - 1.1.冲裁件的结构工艺性- 4 - 1.1.1.冲裁件的形状- 4 - 第二章、制件冲压工艺方案的确定- 5 - 2.1.冲压工序的组合- 5 - 2.2.冲压顺序的安排- 5 - 第三章、制件排样图的设计及材料利用率的计算- 6 - 3.1.展开尺寸的计算- 6 - 3.2.制件排样图的设计- 8 - 3.2.1.搭边与料宽- 9 - 3.3.材料利用率的计算- 10 - 第四章、确定总冲压力和选用压力机及计算压力中心- 11 - 4.1.拉深模- 11 - 4.2.压力中心的计算- 11 - 4.3.压力机的选用- 11 - 第五章、凸、凹模刃口尺寸计算- 13 - 5.1.拉深模- 13 - 第六章、模具整体结构形式设计- 15 - 第七章、模具零件的结构设计- 16 - 7.1.拉深凸模的设计- 16 - 7.2.拉深凹模的设计- 16 - 7.3.选择标准模架- 18 - 7.4.定位板的设计- 18 - 7.5.凹模芯（二）的设计- 18 - 第八章、模具零件的加工工艺- 20 - 8.1.拉深凸模的加工工艺- 20 - 8.2.拉深凹模的加工工艺- 20 - 8.3.凹模芯（二）的加工工艺- 20 - 第九章、模具的总装配- 22 - 设计小结- 23 - 参考文献- 24 -