连接支架成形工艺分析及级进模设计+CAD图纸
Multi-position progressive die for connecting bracket
Abstract: This design topic is the design of progressive die for connecting bracket forming process analysis and level, parts for connecting bracket, its structure is more complex, is a large batch production of the product. If a single process mode of production, the required number of mold, the production efficiency is low and it is difficult to accurately positioning. If use the multi-position progressive die production, raw material fed by automatic feeders, parts of a product forming, will greatly improve the production efficiency and stability of the product quality, reduce production cost. According to the structural characteristics of parts, analyses the advantages and disadvantages of using different forming process, determined using progressive die design, design a rational structure, reliable and convenient use of progressive die, the die can produce the drawing required sizes, tolerances and other technical indicators of parts. And describes the structure, working principle of stamping die, and on the basis of performance parts shape and material, reasonable process scheme was formulated and designed to complete the mold.
Key words: Stamping; die; connecting bracket
目 录
1 绪论 1
1.1 前言 1
1.1.1 冲压的概念、特点及应用 1
1.1.2 冲压的基本工序及模具 2
1.1.3 冲压技术的现状及发展方向 3
1.2 毕业设计目的与内容 6
2 零件结构及其冲压工艺性分析 9
2.1 零件的介绍 9
2.2 零件的结构工艺性 9
3 冲压工艺方案的确定及模具基本类型的选择 11
3.1 冲压加工的基本工序 11
3.2 有关模具的类型和结构的概念 11
3.2.1 模具的分类 11
3.2.2 模具结构的基本概念 11
3.3 工序次数的选择 12
3.4 排样方式和材料利用率 13
3.5 材料的利用率 13
3.6 工艺方案的比较 14
4 模具结构的选择 15
4.1 连接支架结构的选择 15
5 模具的设计 17
5.1 尺寸计算的原则 17
5.2 零件尺寸公差的确定 17
5.3 凸、凹模刃口尺寸的计算 17
5.4 压力中心的确定 19
5.5 冲压力的计算 19
5.6 压力机的选用 20
结 论 21
致 谢 22
参考文献 23
1 绪论
1.1 前言
1.1.1 冲压的概念、特点及应用
冲压是利用安装在冲压设备（主要是压力机）上的模具对材料施加压力，使其产生分离或塑性变形，从而获得所需零件（俗称冲压或冲压件）的一种压力加工方法。冲压通常是在常温下对材料进行冷变形加工，且主要采用板料来加工成所需零件，所以也叫冷冲压或板料冲压。冲压是材料压力加工或塑性加工的主要方法之一，隶属于材料成型工程术。