摘要：冲压是一种借助冲压机床动力，通过改变材料物理状态来实现物品外形的加工方法。而模具是用来进行冲压所必需的工具。本文以模具设计为核心展开，描述弯曲件零件的冷冲压级进模的设计过程，重点研究制件工艺与模具结构设计等内容。本文中制件的材料为45，厚度2mm。该材料为强度、硬度一般，而韧性和塑性较高，具有良好的冲裁和镦粗等冷加工性能，适合用于薄板加工的制件。本文针对该类型材料制件的需要，使用了压力机、自动送料机和冷冲压级进模等设备构成冲压的网络，完成了冲压所需的基本元素。论文首先对制件进行工艺分析，确定了制件冲压方案；然后对制件载体进行了工艺排样，完成模具零件的分配；接着对模具零件工艺尺寸及其结构进行分析，完成模具工作零件的设计；最后选择合适的模件材料并对模具进行组装。从而完成整个模具的设计过程。23603
毕业论文关键词：弯曲件；级续模；排样；结构设计
Design of Progressive Die for the Hasp Part
Abstract:Stamping is a kind of processing method which used the punch press motive power and through changing material’s physical condition to make article appearance.And mould is a necessary tool to proceed stamping.This article takes mould design as core to launch,describes the design process of cover cap forming cold stamping progressive mould,focus on workpiece forming technology and mould structure design. In this paper,the material of this part is high quality carbon steel(45),its thickness is 2mm.This material is a soft carbon steel,strength and hardness is low,but high toughness and plastic.It possesses excellent cold workability of blanking,drawing,curve and upsetting,etc,suitable for processing the sheet forming parts.This paper direct at the forming parts needed of the type of material.Use the equipment of press machine,auto-feeder and cold stamping progressive die to form the stamping network. Completed the basic elements of stamping requirement. The paper analyzes the parts technology firstly,the parts stamping project are determined; Then makes the process layout of the parts carrier,completes the mould parts distribution; Finally,completes the whole die design process.
Key words: Cover Cap；Progressive Mould；Layout；Physical Design
目 录
1 前言 1
1.1 课题研究的主要内容及意义 1
1.2 选题目的 1
1.3 国内外现状及发展趋势 2
2 冲压工艺设计 2
2.1 工艺分析 3
2.2 工艺方案 3
2.2.1 冲压工艺方案的设计 3
2.2.2 工艺方案的确定 4
2.3 弯曲展开计算 4
3 排样设计 5
3.1 载体的选择 5
3.2 带料排样设计准则 5
3.3 排样设计 6
3.3.1 排样 6
3.3.2 搭边 6
3.3 材料利用率计算 6
4 模具工艺尺寸设计 7
4.1 冲压力计算 7
4.1.1 冲裁力计算 7
4.1.2 卸料力及推件力计算 8
4.1.3 弯曲力的计算 8
4.2 压力中心计算 9
4.3 刃口尺寸计算 10
4.4 刃口尺寸的计算方法 11
5 模具零件结构设计 13
5.1 凸、凹模设计 13
5.1.1 凸模结构及其固定 14
5.1.2 凹模结构及其固定 15 锁扣成形工艺及级进模设计+CAD图纸:http://www.751com.cn/jixie/lunwen_16771.html