汽车制动蹄结构件工艺规程设计及模具设计

文档编号:JX1685  文档字数:15296.页数:30 附任务书，开题报告，外文翻译，答辩PPT,CAD图

汽车制动蹄结构件工艺规程设计及模具设计

 【摘要】制动蹄是汽车制动器上的重要保安零件，一般为铸件和焊接件两种形式。由于铸件存在许多缺陷，如气孔、夹砂、冷隔、缩孔、裂纹等，且生产成本较高，所以目前制动蹄常采用板料冲压、弯曲，然后焊接成形等结构。它由制动蹄翼板、幅板、摩擦片等主要零件构成。在汽车行车制动过程中，液压系统内建立高压液体，此高压液体推动制动轮缸中两个活塞向外张开，使紧靠于制动轮缸的制动蹄端向两边分开，消除制动鼓与摩擦片间的预留间隙，从而贴于制动鼓的内圆面上，达到制动的目的。但制动蹄翼板在冲压、弯曲成形和焊接的过程中，易产生弯曲回弹和焊接变形回弹，从而使零件的实际形状和尺寸与设计要求产生差别，影响制动效果。本文对制动蹄翼板进行了模具设计以及其结构特点和工艺性进行了分析。
 
 【关键词】板料冲压；制动蹄；翼板；工艺分析
Automobile brake structure of process design and die design

 [Abstract] The brake shoe is an important security of automobile brake parts, generally for casting and welding pieces of two forms.Because the casting has many defects, such as holes, sand, cold shut, shrinkage, crack, and the production cost is higher, so the brake shoe is often used in sheet metal stamping, bending, and welding structure.It consists of brake shoe plate, steel plate, friction sheet and other main parts.In the automobile braking process, the hydraulic system to establish high pressure liquid, the liquid pushes the brake wheel cylinder piston in two opened outwards, so close to the brake wheel cylinder of brake shoe end on both sides to separate, eliminate the brake drum and the friction between the sheets of the reserved clearance, thereby affixed to the brake drum on the inner circle surface, achieve the brake.But the brake shoes wing plate in stamping, bending and welding process, easy bending and welding deformation resilience, thereby making the parts of the actual shape and size and design requirements of difference, influence the braking effect.The brake shoe plate mould was designed and its structure characteristics and technology are analyzed.
 [Key words]: Sheet stamping；Brake shoe；Wing plate；Process analysis

目 录

毕业设计（文档）任务书 Ⅰ
开题报告 Ⅱ
中文摘要 Ⅵ
外文摘要 Ⅶ
前言 1
1 绪论 2
1.1 冲压技术的概念 2
1.2 模具技术的发展趋势 3
1.3 冲压模具的特点 5
1.4 模具CAD技术 6
2 铸件与结构件的工艺及经济性分析 7
2.1 工艺分析 7
2.2 经济性分析 8
2.3 结论 8
3 制动蹄结构件工艺规程 8
3.1 工艺规程的作用 8
3.2 工艺规程的种类 8
3.3 对工艺规程的要求 9
3.4 制定工艺规程的基本原则 9
3.5 制定工艺规程 9
4 制动蹄翼板冲压模具设计 12
4.1 冲压工艺设计 12
4.2 落料冲孔复合模设计计算 13
5 模具安装与调试 21
5.1 上、下模座的安装 21
5.2 调整和试模 22
6 模具的经济性分析 23
7 总结 24
参考文献 26
致谢 27

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