拉深模具设计说明书

洛阳理工学院毕业设计（论文）

壳体冲压工艺及模具设计

摘 要

本次设计的零件为带凸缘阶梯形圆筒件的拉深。壳体采用的材料20钢及1.5mm厚度保证了足够的强度和刚度。该零件外形基本对称，材料是适于制造高变形性能，深拉延产品及形状较复杂产品的钢材。

首先对零件进行了工艺性分析，有拉深、冲孔、切边等一系列工序。而且生产批量大，各工位有相互的尺寸关系，经过计算分析采用一次拉伸与冲孔切边的工艺生产方案，可提高材料的利用率。经过计算分析完成该模具的主要设计计算，凸模、凹模工作部分的设计计算，还有工位布置和主要零部件的结构设计，选择合适的模具材料。拉伸又称拉延、压延或引伸。它是利用拉伸模具在压力机的压力作用下，将预先剪裁或冲裁成一定形状的平板毛坯，拉制成立体空心件的加工方法。拉深成形是板材立体成形的最重要方法，以拉伸成形为主体的冲压件非常多，在很多工业及生活用品中都又拉伸成形的制品，是冲模发展方向之一。在模具设计前必须对工件进行全面分析，然后合理确定工件的冲压成形工艺方案，正确设计模具结构和模具零件的加工工艺规程，以获得最佳的技术经济效益。

关 键 词：拉伸模，拉深，切边，冲孔，设计。

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洛阳理工学院毕业设计（论文）

SHELL THE STAMPING PROCESS AND MOLD DESIGN

ABSTRACT

The design of box-shaped flange parts for deep drawing parts. Shell material used No. 20 steel and 0.5mm thickness to ensure sufficient strength and stiffness. This deformation of material is suitable for manufacturing high-performance and deep-drawing products and more complex products shape.

We carried out the parts of analysis, there is deep drawing, punching, cutting-edge series of processes. And production volume, and the works are of the size of the mutual relationship between the calculated and analyzed through the use of a stretching and punching the production of cutting-edge technology options to improve the utilization of materials. After completion of the analysis of the mold design，convex and concave die part of the design work，there are the major components of layout and design of the structure， choose a suitable mold material.

Also known as tensile drawing, rolling or extended. It is stretching the use of molds in the press under pressure, will be pre-cut or blanking plate into the shape of a certain rough, three-dimensional drawing made of hollow pieces of processing methods. It is stretching the use of molds in the press under pressure, will be pre-cut or blanking plate into the shape of a certain rough, three-dimensional drawing made of hollow pieces of processing methods. Prior the design of the die, the work-piece should be fully analysis. A correctly designed die structure and works process specifications can obtain the best economical benefit.

Keywords：Pushing mold, Drawing, Trimming, Punching, Design

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洛阳理工学院毕业设计（论文）

目 录

前 言 ................................................................................................ 1 第1章

工艺分析 ............................................................................ 2 1.1.1制件介绍 ...................................................................... 2 1.1.2 产品结构形状分析 ..................................................... 2 1.1.3 产品尺寸精度、粗糙度、断面质量分析 .................. 2

第2章 零件冲压工艺方案的确定 ................................................... 4

2.1冲压方案 ................................................................................ 4 2.2工艺方案的确定 .................................................................... 4 第3章冲模总体结构的确定 ............................................................. 5

3.1模具的结构形式 .................................................................... 5 3.2压边圈的选用 ........................................................................ 5 3.3卸料装置 ................................................................................ 5 第4章 零件冲压工艺计算 ............................................................... 6

4.1零件拉深工序计算 ................................................................ 6

4.1.1确定修边余量 .............................................................. 6 4.1.2确定坯料直径 .............................................................. 6 4.1.3判断阶梯筒形部分的拉深次数 ................................... 6 4.2工序压力计算和压力机的选择 ............................................. 8

4.2.1压力机的选择原则 ...................................................... 8 4.3工序压力计算和压力机的选择 ............................................. 8

4.3.1排样图的设计 .............................................................. 8 4.3.2工序压力计算 ............................................................ 10 4.3.3选择压力机 ................................................................ 10 4.5 拉深间隙的计算 ................................................................. 11 4.6 拉深凸、凹模圆角半径的计算 .......................................... 11

4.6.1凹模圆角半径的计算 ................................................ 11 4.6.2凸模圆角半径的计算 ................................................ 11

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1.1零件冲压工艺分析 ................................................................ 2

洛阳理工学院毕业设计（论文）

4.7计算模具刃口尺寸 .............................................................. 11

4.7.1落料模刃口尺寸 ........................................................ 12 4.7.2拉深模工作部分尺寸计算 ......................................... 12 4.8 计算模具其它尺寸 ............................................................. 13

4.8.1凹模 ............................................................................ 13 4.8.2凸凹模 ........................................................................ 13 4.8.3凸模 ............................................................................ 14

第5章模具主要组件的设计 ........................................................... 16

5.1模架的尺寸确定 .................................................................. 16 5.2导向装置 .............................................................................. 17 5.3 模柄的选用 ......................................................................... 18 5.4推件、顶件装置 .................................................................. 18 5.5 定位装置 ............................................................................. 18 结 论 .............................................................................................. 20 谢 辞 .............................................................................................. 21 参考文献 .......................................................................................... 22 附 录 .............................................................................................. 24 外文资料翻译 .................................................................................. 25

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