油封内外夹圈冲压工艺与模具设计.doc

摘   要

    本论文应用本专业所学课程的理论和生产实际知识进行一次冷冲压模具设计工作的实际训练从而培养和提高学生独立工作能力，巩固与扩充了冷冲压模具设计等课程所学的内容，掌握冷冲压模具设计的方法和步骤，掌握冷冲压模具设计的基本的模具技能懂得了怎样分析零件的工艺性，怎样确定工艺方案，了解了模具的基本结构，提高了计算能力，绘图能力，熟悉了规范和标准，同时各科相关的课程都有了全面的复习，独立思考的能力也有了提高。油封内夹圈采用落料、拉伸、冲孔复合模，能较好地实现落料及落料件的修边，模具设计制造简便易行。落料拉伸冲孔效果好，能极大地提高生产效率，但落料拉伸凹模设计较为重要，设计中应充分考虑其落料拉伸模口形状，否则易影响落料拉伸件的形状。说明书也分析了零件冲压成形的工艺特点，介绍了油封外夹圈落料、冲孔、拉深翻边复合模的工作原理和结构设计过程，设计了一副包含落料、冲孔、拉深、翻边的复合模，该模具设计合理，结构紧凑,可靠性好，装、拆、修磨方便,模具使用性能良好，应用广泛。可以在一个工步中完成夹圈毛坯的落料、成形、预冲孔、翻边四道工序，生产率较旧的工艺方法有很大提高，经济效益显著。通过冲裁件工艺分析等确定了模具类型。按照冲压模具的一般步骤，计算并设计了本套模具的主要零部件，如：凸模、凹模、凸模固定板等。模架采用标准模架，选用了合适的冲压设备。

关键词：复合模，夹圈，落料，复合下料，冲孔，复合模，冷冲压，绘图能力

ABSTRACT

Thus the present paper applies this specialty to study the curriculum the theory and the production know-how carries on a time cold stamping mold design work the actual training to raise and to sharpen the student independent working ability, consolidated and expanded the content which curricula and so on cold stamping mold design studied, the method and the step which the grasping cold stamping mold designed, the basic mold skill which the grasping cold stamping mold designed had understood how analyzed the components the technology capability, how definite craft plan, had understood the mold basic structure, sharpened the computation ability, cartography ability, has been familiar with the standard and the standard, simultaneously various branches correlation curriculum all had the comprehensive review, independent thinking ability also had the enhancement. can enhance the production efficiency enormously, but falls the material to stretch the concave mold design to be important, in the design should consider fully it falls the material stretch mold mouth shape, otherwise easy to affect falls the material stretches the shape.  This project analyse the technology features of punch forming and introduce the operational principle and the structure design of the compound moulds of blank-and-cup piercing drawing and flanging. I designed a suit of compound moulds which contain blank-and-cup piercing drawing and flanging. This suit of compound moulds are reasonable designed and has compact structures , high reliability and widely used. This suit of compound moulds can complete blank-and-cup piercing drawing and flanging in a position, so the production efficiency and economic benefit are higher then the old technology features. Determine the type of the moulds by the technology anal yes of the part. Then calculate and design the parts according to the normal way, such as: male mould, female mould and mould holder.  

Keywords: compound moulds,blank-and-cup,falls material,strech mol

punch hole,superposeble die,cold stamping ,artography ability

目录

前言 1

1概论 2

1.1引言 2

1.2.1冲压模相关介绍 2

1.2.2冲模在现代工业生产中的地位 2

1.2.3我国冲压模具市场情况 3

1.2.4 冲压模具水平状况 4

1.2.5我国冲模今后发展趋势 6

2.1工件工艺性分析 6

2.1.1冲裁工艺性 6

2.1.2翻边工艺性 7

2.1.3判断能否一次性翻边成形 7

2.2 工艺方案确定 8

2.2.1.油封内夹圈工艺方案 9

2.2.2.油封外夹圈工艺方案 9

3排样及计算材料利用率 10

3.1计算预冲孔大小 10

3.1.1内夹圈预冲孔计算 10

3.3.2外夹圈预冲孔计算 11

3.2确定排样方式 11

3.3计算材料利用率 12

3.3.1油封内夹圈材料利用率计算 12

3.3.2油封外夹圈材料利用率计算 14

4冲裁力及压力中心计算 15

4.1油封内夹圈计算 15

4.1.1落料力计算 15

4.1.2翻边力计算 16

4.1.3切边力计算 16

4.1.4推件力计算 16

4.4.5总压力计算 16

4.2油封外夹圈计算 16

4.2.1拉深力的计算 16

4.2.2压边力的计算 16

4.2.3拉深总工艺力计算 17

4.2.4翻边力计算 17

4.2.5卸料力的计算 17

4.2.6冲裁力计算 17

4.2.7落料力计算 17

4.2.8总冲压力的计算 17

4.3压力中心的计算 18

5主要工作部分尺寸计算 18

5.1油封内夹圈尺寸计算 18

5.1.1落料刃口尺寸计算 18

5.1.2冲孔切边刃口尺寸计算 19

5.1.3翻边工作刃口尺寸计算 19

5.2油封内夹圈尺寸计算 20

5.2.1落料刃口尺寸计算 20

5.2.2冲孔切边刃口尺寸计算 21

5.2.3翻边工作刃口尺寸计算 21

6凸模、凹模及凸凹模的结构设计及校核 22

6.1油封内夹圈模具外形尺寸 22

6.1.1落料凹模结构设计 22

6.1.2确定落料、翻边凸凹模外形尺寸 24

6.1.3冲孔翻边凸模外形设计 25

6.2油封内夹圈模具外形尺寸 25

6.2.1冲孔凸模外形尺寸 25

6.2.2落料凹模形状设计 26

6.2.3拉深翻边凸凹模外形设计 26

7主要零部件设计 27

7.1模柄的设计 27

7.1.1油封内夹圈模柄的设计 27

7.1.2油封外夹圈模柄的设计 28

7.2固定板和垫板的设计 28

7.2.1凸凹模固定板的设计 28

7.2.2垫板的设计 29

7.3定位零件的设计 30

7.3.1固定挡料销的设计 30

7.3.2圆柱销的设计 30

7.4出件机构的设计 31

7.4.1推出件机构的设计 31

7.4.2下出件机构的设计 33

8模架的选择 35

8.1模架的选择 36

8.2模具的闭合高度计算 37

8.2.1模具闭合高度计算的意义 37

8.2.2计算模具的闭合高度 37

9选择冲压设备 37

10模具总装图及装配工艺性……………………………………………………  39

   10.1模具总配图……………………………………………………………… 39

   10.2装配工艺性……………………………………………………………… 41

       10.2.1工作零件的固定装配 41

10.2.2其他零件的装配 42

参考文献 43

总结 44

致谢 45