设计描述：

文档包括:

WORD版设计说明书1份,共38页，约12000字
外文翻译一份
文献综述一份
开题报告一份

CAD版本图纸，共23张
SW三维图，23张

目  录

摘要………………………………………………………………………………………Ⅰ

Abstract…………………………………………………………………………………Ⅱ

1.绪论…………………………………………………………………………………… 1
1.1概述………………………………………………………………………………1
1.2冷挤压技术的分类及简介………………………………………………………1
1.3冷挤压技术的特点………………………………………………………………2
  1.3.1冷挤压的优点………………………………………………………………2
  1.3.1冷挤压的缺点………………………………………………………………3
1.4冷挤压技术现状及发展方向……………………………………………………4
1.5本课题要求………………………………………………………………………5
1.6预期目标及效果…………………………………………………………………5

2.冷挤压零件……………………………………………………………………………6
2.1零件基本尺寸及三维模型………………………………………………………6
2.2毛坯零件的选择及其性能指标…………………………………………………7
2.3零件加工前准备…………………………………………………………………8
   2.4毛坯变形程度……………………………………………………………………9 
                                          
3.冷挤压模具设计………………………………………………………………………11 
3.1冷挤压模架整体结构设计………………………………………………………11
3.2 模具主要零部件的设计…………………………………………………………13
  3.2.1上模板的设计………………………………………………………………13
  3.2.2上模座的设计………………………………………………………………14
  3.2.3垫板的设计…………………………………………………………………15
  3.2.4下模座的设计………………………………………………………………15
  3.2.5下模预应力圈的设计………………………………………………………16
  3.2.6下模板的设计…………………………………………………………17
  3.2.7模圈导向套的设计……………………………………………………18                                     

4.组合凹模设计……………………………………………………………………19                                                
4.1组合凹模结构形式的确定…………………………………………………20
4.2组合凹模各圈直径的确定…………………………………………………20
4.3组合凹模径向过盈量及轴向压合量的确定………………………………21

5.模具及其零部件的三维建模……………………………………………………23
   5.1冷镦模具装配体三维模型…………………………………………………23
   5.2非标准零部件三维模型……………………………………………………24
6.总结………………………………………………………………………………30

7.致谢………………………………………………………………………………31

参考文献……………………………………………………………………………32
     
 
摘要

    本文主要针对JH70摩托车主轴坯冷镦成形模具的设计。本课题研究的核心问题是冷挤压组合凹模的设计。通过被加工零件的尺寸以及变形程度确定冷挤压的单位挤压力，从而确定冷挤压组合凹模的结构形式以及各圈直径，最后确定组合凹模的径向过盈量以及轴向压合量。再通过组合凹模的尺寸、形状确定冷镦模架其它零部件的形状及尺寸，从而最终确定整个模架结构、尺寸以及组合形式等要素。通过查阅设计手册确定各个模架零部件的材料。本模具采用模口导向的形式保证在上、下模合模过程中的同轴度。本文还对整个冷挤压模具进行了三维建模，以便直观的表达冷挤压模具零部件的外形以及零件之间装配关系，方便读者对整个模具的工作原理及过程有一个清晰的了解。
关键词：冷挤压、主轴坯、组合凹模、三维建模

 
Abstract

     This paper focuses JH70 Motorcycle spindle blanks cold upsetting mold design. The core problem of this research is a combination of cold extrusion die design. By the size of parts to be machined as well as to determine the degree of deformation of cold extrusion extrusion pressure units, in order to determine a combination of cold extrusion die of the structure as well as the diameter of the circle, and finally determine the composition of the die and the amount of interference radial axial compressive aggregate amount. Die through a combination of size, shape, cold heading mold to determine the shape and size of other components, which ultimately determine the overall mold structure, size and combination of other factors. Researching Design Manual to determine the various parts of the mold material. The mold is made in the form of the guide die to ensure the upper and lower mold clamping process of the concentricity. This paper also carried out throughout the cold extrusion dies three-dimensional modeling, there is a clear understanding to express the intuitive parts of cold extrusion die assembly relations between parts shape and allow readers to work on the whole principle and process of the mold .
Keywords：cold extrusion，spindle blanks，conbination die，Three-dimensional modeling