摘要：本课题主要设计的是汽车座椅支架零件级进模，此模具的主体结构较为简洁明了，实用度很高，可被方便简单地使用，安全系数较高。首先第一步是安装课题所给出的汽车座椅支架零部件计算此零件铺展开来的具体数据尺寸，工件的压力合力的交点要依据之前的具体数据，制作零件材料与实际消耗消耗材料所占的比例，并制作出零件的冲压排样布局的方式。由于凸凹模的尺寸以及精度要求不同，采用不同的计算方式计算刃口尺寸；冲压社别的选择取决与冲压力的结算结果；通过课题所给工件的对本课题制件外形尺寸以及几和形状进行分析计算，并对凸凹模的基本结构形状进行设计，最终规划模具的整体选择合适的标准件完成整个模具设计。进行完数据的计算后，对零件的整体设计方案，重要零件的凸凹模进行设计，对整体模具的装配工艺进行分析。在整个毕业课题的设计中完成所有课题要求其中包括模具的设计说明书和模具的主要零件二维图，课题所给零件二维图，整体模具的二维装配图等总共合并达到三张A0图纸的尺寸。69478

毕业论文关键词： 级进模；弯曲；冲压

Die design of automobile seat support

Abstract: The main design of this subject is the progressive die of the automobile seat support. The main structure of the die is simple and clear, and the practicability is very high. It can be conveniently and simply used, and the safety factor is higher. The first step is the specific data size installation of car seat bracket parts are subject to calculate the parts spread, the pressure force to the workpiece node specific data according to the former, the proportion of production parts and materials consumption accounts for the actual consumption of materials, and produce parts stamping layout way. Because of the size of punch and die and different precision requirements, using different methods of calculating the blade size calculation; stamping agency choice depends on the pressure of the settlement results; the workpiece is analyzed on this topic and a few parts size and shape by the subject, and the basic structure of the punch and die shape design, finally the overall planning selection of suitable mold standard parts to complete the mold design. After the calculation of the data, the overall design of the parts, the important parts of the convex and concave mold design, the overall mold assembly process analysis. Complete all the requirements of the project design specifications and mold mold including two main parts of the map in the design of the graduation project, subject to the overall parts of 2D drawings, mould 2D drawings and a total merger reached three A0 the size of the drawings.

Key words: Progressive die; bending; punching

目  录

1  绪论  …1

1.1  时代背景 1

1.2  本次课题意义 2

1.3  本次课题的主要内容 …2

2  工艺分析 …3

2.1  工件分析3

2.1.1  工件形状分析 4

2.1.2  工件材料分析 4

2.1.3  冲压工艺分析 5

2.1.4  工件尺寸精度 5

2.2  确定工艺方案5

3  模具总体设计 …7

3.1  模具类型的选择…7

3.2  定位方式的选择…8

3.3  顶料和卸料方式的选择8

3.3.1  顶料装置 8

3.3.2  卸料方式 8

3.4  导向方式的选择…9

4  工艺计算 …10

4.1  工件的展开尺寸计算…10

4.1.1  中性层的确定 10

4.1.2  毛坯展开尺寸的计算 …10

4.2  排样、计算条料宽度、确定步距、材料利用率…12