摘要：本次课题主要是要完成制造铰接支架工件的模具设计。其结构包括一次三折弯、卷圆等基本工艺。根据制件的结构特点、分析不同成形工艺优缺点的要求，采用能设计出结构合理、使用可靠方便的级进模具。方案分析结果表明级进模研究结果显示不仅能提高生产效率和制件质量的稳定性，而且可以降低生产成本。成形工艺和模具设计的重点是使用NX/UG软件，进行铰接支架工件的设计并完成必要的工艺分析。依据成形件的成形性，可以设计出最佳的坯料形状。最后依照制件的形状，合理制订该模架主要零部件的加工工艺规程，同时完成铰接支座多工位级进模的总体设计以及冲压设备的选型。

关键词： 成形工艺；模具设计；多工位级进模

Hinge Bracket Parts Forming Technology and Die Design

Abstract: This research is to complete the forming process and die design of the hinge support. The structure including a double bending, two times a single bending and other basic processes. According to the structural characteristics of the parts, the analysis of the advantages and disadvantages of different forming process requirements, it can be designed to design a reasonable structure, the use of reliable and convenient progressive die. The analysis results show that the progressive die can not only improve the production efficiency and the quality of the parts, but also can reduce the production cost. The forming process and die design is the focus of the use of UG/NX software, to carry out the design of the hinge bracket parts and complete the necessary process analysis. According to the formability of the forming part, the optimum blank shape can be designed. Then, based on the conclusion of the analysis of the forming process, the die design of cold stamping process is improved. Finally according to the shape of the parts, to formulate a reasonable the die main parts of the processing procedures, and complete the hinge support multi position progressive die for the overall design and stamping equipment selection.

Key words: Forming technology; Mould design; Multi station progressive die

目  录

1  冷冲模的基本知识  1

1.1  冷冲模具概述 1

1.1.1  冲压成形的分类 1

1.1.2  冷冲压的特点 2

1.2  冲压成形工艺及研究方法 3

1.3  冲压生产对模具的基本要求 4

1.4  冲压工艺—寻求新突破 5

1.5  级进模设计的方法 6

1.5.1  冲裁、弯曲的冲压方向 6

1.5.2  排样与条料的送进 7

2  制定设计方案 8

2.1  制件的产品分析8

2.1.1  制件的结构特点 8

2.1.2  支架工件的材料特性 9

2.1.3  材料的热处理问题 10

2.2  制件冲压工艺卡11

2.3  设计方案的制定与分析比较12

2.3.1  工序性质、数目和顺序的确定 12

2.3.2  制定工艺方案 12

2.3.3  工艺方案分析 13

3  毛坯的制备与排样 14

3.1  毛坯的制备过程14

3.1.1  毛坯形状的确定 14

3.1.2  制件毛坯下料方式 15

3.1.3  毛坯尺寸的计算 15

3.1.4  中间工序的形状分析 16

3.2  排样设计17

3.2.1  排样原则 17

3.2.2  排样方式 17

3.2.3  铰接支架工件的排样 18

3.3  搭边设计19

4  冲压工艺性计算 21

4.1  冲裁的基本原理21

4.1.1  冲裁过程变形分析 21

4.1.2  冲裁力计算 22

4.2  三维软件计算冲压力的结果23

4.3  弯曲工艺分析和计算24

4.3.1  最小弯曲半径的校核 25

4.3.2  弯曲件直边高度、孔边距离校核 25

4.3.3  弯曲力计算 26

5  冲裁间隙与弯曲回弹的控制 27

5.1  冲裁间隙27