摘 要

模具作为高质量、高效率的产品生产工具，应用十分广泛。本设计针对一侧护板的落料冲孔复合模以及弯曲模具，详细的介绍了其设计过程。

首先，根据设计零件的尺寸、材料等要求，分析零件的工艺性，确定冲裁工艺方案及模具结构方案。再通过工艺设计来进行计算，确定排样方式，计算冲压力，选择压力机，计算凸、凹模刃口尺寸和公差等。最后，根据设计选用零部件，绘制模具总装图与零件图。

本次设计共分为三个阶段完成。第一，必须注重理论联系实际，确定冲裁工艺方案与结构。第二，对相关尺寸进行计算，同时确定模具草图。第三，利用CAD绘制模具总装图以及零件图，同时完成说明书。

通过本次的设计工作，让我对本专业的工作更加了解。在查找文献的过程中学到了很多新知识。总而言之，毕业设计就是对理论知识的再回顾的一个过程。

关键词：冷冲压；模具；凸模；凹模

Abstract

Mold is widely used as a high quality and high efficiency production tool during stamping. This work introduces the design of the blanking and punching compound die and the bending die for a side guard plate in details.

Firstly, the technological design of the parts was analyzed according to the component dimension, material and production lot-size, which determine the stamping process and mold structure. Secondly, the layout was chosen and the stamping force was evaluated via the process design calculation, followed by selecting the press machine and calculating the size and tolerance of mold blades. Finally, the parts were carefully chosen and the mold assembly and part drawings were given.

The whole mold design was divided into three stages. Firstly, the punching process and structure were determined carefully on both theoretical and practical basis. Secondly, the mold dimensions were calculated and the mold structure drawing was initially designed. Thirdly, the CAD software was adopted to draw the mold assembly and part drawings, and then the research report was written.

After finishing this work, we could have a better and deeper understanding of our professional knowledge. During literature review, we have learnt and grasped many new skills and tools. I believe this final year project enable us to review and examine our theoretical and practical analysis skills.

Key words: cold stamping, mold, convex mould, concave die

目录

摘要-------------------------------------------------------------------------------------------------------Ⅰ

Abstract--------------------------------------------------------------------------------------------------Ⅱ

第1章 绪论---------------------------------------------------------------------------------------------1

1.1概述------------------------------------------------------------------------------------------------1

1.2模具制造国内外现状-------------------------------------------------------------------------1

1.3CAD/CAE/CAM的概述-------------------------------------------------------------------------3

1.4研究模具及冲压技术的意义----------------------------------------------------------------3

第2章 侧护板工艺方案的制定和模具结构设计--------------------------------------------4

2.1工艺方案的制定与选择----------------------------------------------------------------------4

2.1.1加工方案选择----------------------------------------------------------------------------4

2.1.2排样设计-----------------------------------------------------------------------------------5

2.1.3压力中心的计算-------------------------------------------------------------------------6

2.2模具结构设计-----------------------------------------------------------------------------------7

2.3模具运动过程----------------------------------------------------------------------------------10

2.3.1落料冲孔复合模运动过程----------------------------------------------------------10

2.3.2弯曲模运动过程-----------------------------------------------------------------------10

第3章 落料冲孔复合模具零件的设计与计算----------------------------------------------11

3.1落料冲孔复合模零件的计算--------------------------------------------------------------11

3.1.1冲孔凸、凹模刃口尺寸计算-------------------------------------------------------11

3.1.2落料凸、凹模刃口尺寸计算--------------------------------------------------------14

3.2落料冲孔复合模零件的设计--------------------------------------------------------------15

3.2.1冲孔凸模---------------------------------------------------------------------------------15

3.2.2落料冲孔凸凹模-----------------------------------------------------------------------17

3.2.3落料凹模---------------------------------------------------------------------------------19

3.3落料冲孔复合模冲裁力的计算-----------------------------------------------------------20

3.4落料冲孔复合模具压力机选择-----------------------------------------------------------21

第4章 落料冲孔复合模具其他零件的选择-------------------------------------------------22

第5章 弯曲模具零件的设计与计算-----------------------------------------------------------23

5.1弯曲凸、凹模尺寸计算----------------------------------------------------------------------23

5.1.1凸、凹模圆角半径--------------------------------------------------------------------23

5.1.2凸、凹模合理间隙--------------------------------------------------------------------23

5.1.3凸、凹模宽度尺寸计算--------------------------------------------------------------23

5.1.4弯曲回弹角------------------------------------------------------------------------------24

5.2弯曲凸、凹模结构设计----------------------------------------------------------------------24

5.2.1弯曲凸模设计--------------------------------------------------------------------------24

5.2.2弯曲凹模设计--------------------------------------------------------------------------25

5.3弯曲力的计算----------------------------------------------------------------------------------26

5.4弯曲模具压力机的选择---------------------------------------------------------------------26

第6章 弯曲模具其他零件的选择--------------------------------------------------------------27

结论-------------------------------------------------------------------------------------------------------28