平垫冲压模具设计[毕业论文+CAD图纸]

冲压模具设计：平垫冲压模具设计含论文，CAD图纸

平垫冲压模具设计[毕业论文+CAD图纸]

摘 要

冲裁工艺在工业生产中应用广泛，冲压模具设计与制造技术是一项技术性和经验性都很强的工作。本次毕业设计根据毕业设计任务书提供的零件图纸要求,用Auto CAD进行设计分析。根据分析结果选择合理的冲压工艺和合理的模具结构，在此基础上优化零件结构和选择合适的零件材料。经过查阅资料，首先要对零件进行工艺分析，经过工艺分析和对比，采用冲孔落料工序，通过冲裁力、顶件力、卸料力等计算，确定压力机的型号。再分析对冲压件加工所需的模具类型，选择所需设计的模具类型。

本文首先叙述了冲压模具的发展状况，模具在现代工业中的作用，和在整个国民经济中的地位。说明了冲压模具的重要性与本次设计的意义，接着是简单说明了模具设计的基本概念和模具设计的一般步骤、模具的分类、模具零件的分类、模具的结构形式、冲压的基本概念、冲压工艺基础理论、塑性力学基础理论。然后对冲压件进行工艺分析，完成了工艺方案的确定，对零件排样图的设计，完成了材料利用率的计算。再进行冲裁工艺力的计算和冲裁模工作部分的设计计算，为选择冲压设备提供依据。其次对主要零部件的设计和标准件的选择，为本次模具零件图的绘制和模具的成形提供依据，以及为装配图各尺寸提供依据。通过前面的设计方案画出模具各零件图和装配图。

本次设计阐述了冲压倒装复合模的结构设计及工作过程。本模具性能可靠，运行平稳，提高了产品质量和生产效率，降低劳动强度和生产成本。

关键字：冲裁；落料冲孔；倒装复合模；模具结构

ABSTRACT

Application is broad according to cutting handicraft in the commercial run. That dies designs and makes a technology is one item technicality and all very strong job of experience. Originally, time, This graduation design based on the graduation design programme .Make use of the computer CAD software to assist design。Choose rational stamping handicraft and rational mould structure according to analysing result. The basis fixes the part material optimizing part structure and choosing rightly here. Look up a data through.. First be going to carry out industrial analysis on the part , Industrial analysis and contrast pass. Adopt punched hole blank working procedure. Passing according to cutting a force , being equivalent to a force in being unloaded piece strenuously, and so on secretly schemes against, ascertain the press machine type. Again analysis stamps the type processing the required mould piece face to face. Choose the required mould type.

Situation the main body of the book has been narrated first stamping development of mould. Mould effect in modern industry and position in drawing in entire national economy. Have explained the significance that dies significance and common process. The step having explained the design for die and mould basic concept and the design for die and mould sort simplely follow, the mould classification , mould part classification , the mould structure form , the basic concept stamping, stamp handicraft basic theory , engineering plasticity basic theory. And then carry out industrial analysis on stamping piece. Accomplish handicraft scheme ascertaining that. Arrange the master drawing design to the part. Be completed to material the utilization ratio calculation. Carry out the calculation according to cutting a force again and The design according to cutting the model job part secretly schemes against. Be that the equipment choosing stamping provides a basis. Secondary choice to main component and part design and standard piece. Drawing and the mould forming that time of mould part pursues provide a basis to. And, every dimension provides a basis to assembling picture. By the fact that the preceding design plan draws up a mould, every part pursues and assembles picture.

Design the physical design and course of work having set forth the stamping upside down mounting compound model originally time. The mould function is reliable originally , operation is stable, have raised product quality and the efficacy , have reduced the intensity of labour and cost of production.

Keywords: Stamping; Blanking and Punching; Compound die; Die structure

1 绪 论

1.1模具技术的历史与发展水平

我国考古发现，早在2000多年前，我国已有冲压模具被用于制造铜器，证明了中国古代冲压成型和冲压模具方面的成就就在世界领先。我国于20世纪60年代开始生产精冲模具。在走过了温长的发展道路之后，目前我国已形成了300多亿元各类冲压模具的生产能力。

近年来，我国冲压模具水平已有很大提高。大型冲压模具已能生产单套重量达50多吨的模具。为中档轿车配套的覆盖件模具内也能生产了。精度达到1~2μm，寿命2亿次左右的多工位级进模国内已有多家企业能够生产。表面粗糙度达到Ra≤1.5μm的精冲模，大尺寸（φ≥300mm）精冲模及中厚板精冲模国内也已达到相当高的水平。

我国模具CAD/CAM技术的发展已有20多年历史。例如国内汽车覆盖件模具生产企业普遍采用了CAD/CAM技术/DL图的设计和模具结构图的设计均已实现二维CAD，多数企业已经向三维过渡，总图生产逐步代替零件图生产。且模具的参数化设计也开始走向少数模具厂家技术开发的领域。高性能的五轴高速铣床和三轴的高速铣床的应用已越来越多。NC、DNC技术的应用越来越成熟，可以进行倾角加工超精加工。这些都提高了模具面加工精度，提高了模具的质量，缩短了模具的制造周期。

1.2模具在现代工业中的地位

在现代工业生产中，模具是重要的工艺装备之一，它在铸造、锻造、冲压、塑料、橡胶、玻璃、粉末冶金、陶瓷制品等生产行业中得到了广泛应用。由于采用模具进行生产能提高生产效率、节约原材料、降低成本，并保证一定的加工质量要求，所以，汽车、飞机、拖拉机、电器、仪表、玩具和日常品等产品的零部件很多都采用模具进行加工。据国际技术协会统计，2000年产品零件粗加工的75 %，精加工的50 % 都由模具加工完成。

1.3模具工业在国民经济中的地位

模具工业是“百业之母”，是工业产品的“效益放大器”。各国对模具的美誉很多，美国工业