1、单位代码 学 号 分 类 号 密 级 XX大学毕业设计说明书汽车水泵叶轮冲压工艺与模具设计 院（系）名称 工学院机械系 专业名称 材料成型及控制工程 学生姓名 指导教师20xx年 5 月 15 日 汽车水泵叶轮冲压工艺与模具设计摘要工业生产中普遍采用模具成型工艺方法，有效地保证了产品的生产率和质量，使操作技术简化，还能省料、节能，获得显著的经济效益。由于产品的材料和工艺特性不同，生产用的设备也各异，模具种类繁多，但用的最为广泛的大约有以下几种：冷冲压模、塑料成型模、锻造模、精密铸造模、粉末冶金模、橡胶成型模、玻璃成型模、窑业制品模、食品糖果模、建材用模等。其中以冷冲压模、塑料模的技术要求和复杂
2、程度较高。设计内容是从零件的工艺性分析开始的，根据工艺要求来确定设计的大体思路。其开始是确定该模具类型为落料、拉深复合模，做工艺计算，确定模具的压力中心，计算出冲裁时的拉深力、冲压力、卸料力、整形力，最后根据前面所计算出的内容确定模具的凸、凹模的刃口尺寸和形状。设计出定位方式、卸料装置、顶件装置、模架等模具的主要零部件，并确定冲模的闭合高度从而选择压力机，完成整个模具的设计工作。模具主要零部件结构设计是模具设计的主要内容，其内容包含了凹模结构设计、凸模结构设计、定位零件、弹性卸料装置、导柱与导套、模柄与模架的选取等重要零部件的设计加工方法和加工注意要点。这样更有利于加工人员的一线操作，使其通俗
3、易懂加工方便。本次设计不仅让我熟悉了课本所学的知识，而且让我做到所学的知识灵活运用到实践当中，更让我了解了冲压模具设计的全过程和加工实践中应注意的要点。使我从毕业设计中更好理解了模具实际生产中的重要性。 关键词：落料，拉深，冲孔，整形Auto water pump impeller stamping process and die design AbstractThe molding process methods commonly used in industrial production, and effectively ensure the productivity and qualit
4、y of the product, so that the operating technology to simplify, but also material saving, energy saving, significant economic benefits. Materials and workmanship of the product characteristics, production equipment also vary a wide range of mold, but the most widely used in approximately the followi
5、ng: cold stamping mold, plastic molding, forging mold, the mold of precision casting, powder metallurgy mold, rubber molding, glass molding, ceramic products, mold, food candy mold, building materials and mold.Among them, the high technical requirements and complexity of the cold stamping mold, plas
6、tic mold. Design from the parts of the process began, according to process requirements to determine the design of the general idea. The start is to determine the mold type blanking, deep drawing composite mode, doing process calculation to determine the center of pressure of the mold, the drawing f
7、orce calculated punching, punching pressure, discharge power, shaping force, the last earlier content calculated to determine the edge size and shape of the mold of convex and concave mold. Design the main components of the positioning method, unloading equipment, roof installation, mold, mold, and
8、to determine the die shut height to select presses to complete the design work of the entire mold.The mold structure design of the main components is the main content of the mold design, its content includes the structural design of the die the punch structural design, locate parts, elastic unloadin
9、g equipment, guide post, guide sleeve, die handle and mold selection of importantprocessing methods and processing of parts of the design points to note. This is more conducive to processing first-line operation, make it easy to understand and easy to process.This design not only familiar with the t
10、extbook knowledge learned, but I do have learned flexibility to practice, made me understand the main points should be noted that in the whole process of stamping die design and processing practices. Make me a better understanding of the importance of actual production of the mold from the graduation project.Keywords: Blanking, deep drawing, punching, shaping.目 录1 . 绪 论 .1 1.1 选题背景.1. 1.2 课题相关调研 .1 1.3 冲压的概念、特点及应用.11.4 冲压的基本工序及模具.21.5 冲压技术的现状及发展方向.32 冲压件工艺分析.72.1 材料.72.2尺寸精度.83 确定工艺方案 .104 主要工艺计算.134.1排样设计与计算.134.2 落料尺寸.144.3 计算条料宽度与送料步距.174.4 压力中心的确
