油封蓋冲压工艺分析及模具设计稿毕业设计稿.docVIP

油封盖冲压工艺分析及模具设计 摘要 用模具技术生产的制品具有高精度、高复杂程度、高一致性、高生产效率和低消耗等特点。由此可见，模具技术已成为衡量一个国家产品制造水平高低的重要标志，决定着产品的质量、效益和新产品的开发能力。 　　本论文详细的论述了冲压模具的全过程。冲压模具即是在冲压加工中，将材料（金属或非金属）加工成零件（或半成品）的一种特殊工艺装备。 　　该零件是离合器壳体，该产品的模具采用了由送料机自动给料的加工方法、成本低、生产效率高。该产品的精度要求一般，结构简单。关键是怎样实现机器自动给料，从而省去人工给料的过程。本文还主要论述了冲裁零件的结构工艺分析、凹凸模刃口尺寸的设计计算、冲裁排样与定位元件的设计、冲压力及压力中心的计算和模具的主要零件的结构设计等。 　　改进后的模具可实现自动化，大大降低了成本，提高了生产效率。 关键词： 落料、冲孔、模具间隙 Abstract Die technology to produce products with high accuracy, high complexity, high consistency, high production efficiency and low consumption and so on. Thus, die technology has become the measure of a country manufacturing an important indicator of the level determines the product quality, efficiency and new product development capability. This paper discusses in detail the whole process of stamping dies. Stamping die that is in the process of stamping, the material (metal or non-metallic) processing into parts(orsemi-finished products) of a special technical equipment. The parts are baffle, the product of mold using an automatic feeding from the feeder processing methods, low cost and high efficiency. The general accuracy of the product, simple structure. The key is how to achieve an automatic feeding machine, thus eliminating the need for manual feeding process. This article also discusses the major processes of structural stampings, embossing Edge Design Calculation, blanking layout and positioning components, design, red center of pressure and stress calculation and the main part of the structure of mold design. The improved mold can be automated, significantly reducing costs and improve productivity. Key words: blanking, punching, die gap 1、冲压工艺分析 (1)制件材料塑性较好，对拉伸、成形比较合适 。 (2)从制件形状看，属阶梯形拉伸件。阶梯形件的拉伸与圆筒形件的拉伸基 本相同。其基本考虑的问题是阶梯件是否可以一次拉成。 （3）毛坯尺寸计算采用一种新的方法，按拉伸件体积不变原则，毛坯直径 Ｄ 按如下公式计算: 式中：T——材料体积；t——材料厚度。 按图1可计算得：D=70.9mm，毛坯相对厚度为t／D×100=(1.5／70.9)=0.36,查表得相应筒形件极限拉伸系数为0.50，前者小于后者，可以判断不能一次拉伸成形。 小阶梯直径与大阶梯直径之比d2／d