U形支板冲压模具设计

题 目：

辽宁工程技术大学 课程设计 U形支板冲压模具设计

班 级：

姓 名： 指导教师： 完成日期：

摘要

冲压模具在实际工业生产中应用广泛。在传统的工业生产中，工人生产的劳动强度大、劳动量大，严重影响生产效率的提高。随着当今科技的发展，工业生产中的模具的使用已经越来越引起人们的重视，而被大量应用到工业生产中来。冲压模具的自动送料技术也投入到实际生产中，冲压模具可以大大的提高劳动成产率，减轻工人的负担，具有重要的技术进步意义和经济价值。

本文对冷冲压技术的分类、特点及发展方向作了简略的概述：论述了冲压零件的成形原理、基本模具结构与运动过程及其设计原理；对典型的冲压件零件进行了设计：此设计解决了冲压模具的加工难题,冲压模具的设计充分利用了机械压力机的功用特点，在室温的条件下对坯件进行冲压成形，生产效率高，经济效益显著。

关键词：冲压、模具、模具设计、工艺

Abstract

Punching die has been widely used in the actual industrial production.In traditional industrial production,the worker work hard ,and there are too much works,sothe efficiency is low.With the development of the science and technology nowdays,the use of punching die in the industial production gain more attention,and be used in the industrail production more and more.Self-acting feed technology of punching die is also used in production,punching die could increase the efficience of production and could alleviate the work burden,so it has signification meaning in technologic progress and economic value.

The article mainly discussed the classification,feature and the developmental direction of the punching technology. Elaborated the punching comonents formation principle, the basic dies structure and the rate process and the principle of design; and designed some conventional punching die : the die for big diameter three direction pipe which solved the problem of traditional maching, the darwing and punching compound die with float punch-matrix, the drawing and cutting compound dies with unaltered press, the compound die for the back bowl of the noise keeper, the design of the compound die which could produce two workpieces in one punching, the bending die for ring shape part , the bending die which used the gemel, automate loading die for cutting, the drawing, punching and burring compound die with sliding automated loading, the punching die for the long pipe with two row of hole, the drawing die for the square box shape workpiece and the burring die for the box shape workpiece .

KeyWord：punching, die, die design, punching,, drawing

目录

摘要............................................................ 2 Abstract........................................................ 3 第1章绪论...................................................... 6

1.1 模具选材的意义.......................................... 6 1.2 模具选材的原则.......................................... 6 1.3 冷冲压模具的选材原则.................................... 8 第2章零件的分析............................................... 10

2.1 零件的工艺性分析....................................... 10 2.2 工艺方案比较及确定..................................... 11

2.2.1 方案的确定....................................... 11 2.2.2 方案比较......................................... 11 2.3 冲压工艺与模具设计的内容及步骤......................... 11 2.4 零件及其冲压工艺性分析................................. 12 2.5 弯曲工艺计算........................................... 12 2.6 搭边................................................... 13 2.7 送料进距............................................... 14 2.8 条料宽度............................................... 14 2.9 排样设计与计算......................................... 14 2.10 冲裁力的计算与压力机的选择............................ 15

2.10.1 冲裁力的计算.................................... 15 2.10.2 压力机的选择与模具闭合高度...................... 17 2.11 压力中心的选择........................................ 18 2.12 模具减间隙与凸凹模设计计算............................ 19 第3章确定模具总体结构方案..................................... 25

3.1 模具类型............................................... 25 3.2 操作与定位方式......................................... 25 3.3 卸料方式与出件方式..................................... 25 3.4 模架类型及精度......................................... 25 3.5 模具的失效形式......................................... 25 3.6 提高模具寿命的途径..................................... 27

3.7 零件的技术要求......................................... 29 3.8 装配技术要求........................................... 29 3.9 模具安装要求........................................... 30 3.10 冲裁模具的试冲........................................ 30 参考文献....................................................... 34

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