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1、学士学位论文摘 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。本次毕业设计根据大业机械制造有限公司提供的零件图纸和加工要求进行了设计。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
2、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。再次根据模具的使用要求和具体加工条件设计了模具零件的加工工艺。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
3、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61ABSTRACTApplication 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, graduation practice has chosen stamping industria
4、l analysis and the mould CAD has designed that。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
5、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, ascert
6、ain the press machine type. Again analysis stamps the type processing the required mould piece face to face. Choose the required mould type. Reach with the mould type queen who designs that, The process every mould job component and part is designed is expressed out.Situation the main body of the bo
7、ok 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 capital design time. The step having explained the design for die and mould basic concept and the d
8、esign 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 handic
9、raft 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 andThe design according to cutting the model job part secretly schemes against. Be that the equipment
10、 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
11、up a mould, every part pursues and assembles picture. Once again, according to the mould, sigmatism demands condition and processes concretely to have designed mould part treating handicraft. Design the physical design and course of work having set forth the stamping upside down mounting compound mo
12、del 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目 录摘 要IABSTRACT1 绪 论11.1模具技术的历史与发展水平1
13、1.2模具在现代工业中的地位21.3模具工业在国民经济中的地位22 冲压的定义和塑性力学基础32.1冲压的定义32.2塑性变形的基本概念33 模具设计过程43.1冲压工艺分析53.1.1 材料53.1.2 零件结构53.2工艺方案及模具结构类型63.2.1工艺方案63.2.2工艺方案分析确定63.3毛坯尺寸的确定和排样83.3.1毛坯尺寸的计算83.3.2查表确定搭边值83.3.3条料宽度93.3.4排样图93.4 材料利用率103.4.1一个步距内的材料利用率103.4.2选择板材103.5 冲压力与压力中心计算113.5.1冲压力分析113.5.2冲压力计算113.6 压力中心123.7
14、工作零件刃口尺寸计算6133.7.1落料部分以落料凹模为基准计算133.7.2冲孔部分以冲孔凸模为基准计算133.7.3刃口尺寸计算133.8 零件结构尺寸7163.8.1落料凹模板尺寸163.8.2凸凹模长度和结构设计183.8.3冲孔凸模尺寸193.9 零件的强度校核203.10其他零件结构尺寸223.11选择压力机9243.12冲压工艺规程253.13 模具工作过程293.13.1初始状态293.13.2凹模在最低点时的状态293.13.3凸模、凹模随滑块上提时的状态303.13.4凹模、凸模继续上提到达最高点完成一个工作循环304 模具零件设计314.1 模架结构的设计314.2下模座
15、的选择设计314.3上模座的选择设计334.4 导柱的选择设计344.5 导套的选择设计354.6 各种板厚的确定354.7 模柄的选择设计365 模具零件制造385.1 垫板385.2 落料凹模板395.3 卸料版405.4 凸模固定板415.5 上模座板425.6 下模座板435.7 凸凹模固定板445.8 推件块465.9 冲孔凸模465.10凸凹模47参考文献49致 谢50附录一51附录二611 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（未包括港、澳、台的统计数字，下同。）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12m，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Ra1.5m的精冲模，大尺寸（300mm）精冲模及中厚板精冲模国内也已达到相当高的水平。 （
