汽车制动钳体组合夹具设计+CAD图纸
毕业论文关键词 CAD 组合夹具 机械制造
Jigs and ®xtures are one of the important aspects of manufacturing. Parts may have different sets of ®xturing requirements and call for different design strategies. Although there are numerous possibilities for ®xture designs, a few basic con®gurations are clearly identi®able. Computer aided design (CAD) has done a little in assisting designers to design jigs and ®xtures, making decisions of the best design selection, and providing designers with suggestions. The goal of this paper is to develop and document the design parameters and speci®cations utilized in jigs and ®xtures design using universal modular jigs and ®xtures design system (UMJFS). This is the ®rst step to develop a knowledge-based Jigs and Fixture design and selection system. This application has the advantages of making the ®xture design information completely modular and transparent, providing better match to the working conditions, reducing lead-time, and generally providing a signi®cant enhancement of ®xture productivity and economy. UMJFS has different standard and modular elements. This makes jigs and ®xtures elements interchangeable and reusable. Designing a UMJFS then becomes a task of selecting and assembling the proper elements together.
目录
1引言…1
1.1三文CAD设计…1
1.2数字样机的介绍3
1.3本课题介绍6
2制动钳零件加工中心加工工艺…6
2.1制动钳零件结构特点7
2.2加工中心工步说明卡和刀具选用卡介绍8
3夹具总体设计…13
3.1总体设计思想…13
3.1.1工序集中思想13
3.1.2Poka-yoke废品设计思想13
3.2夹具总体布置14
3.3制动钳夹具布局设计14
3.3.1常用的3-2-1定位原理说明…15
3.3.2夹具布局的确立原则16
3.3.3制动钳夹具装夹方案17
3.4组合夹具应用…24
3.5Poka-yoke思想在设计中的体现…25
4夹具三文设计及干涉检查…27
4.1过渡底板三文参数化设计27
4.1.1三文参数化设计介绍27
4.1.2过渡底板的参数化设计…28
4.2标准件设计…31
4.3夹具三文实体设计干涉检查…32
4.3.1三文实体干涉检查的重要性…32
4.3.2夹具体的静干涉检查33
4.3.3夹具体的动态干涉检查…35
4.4二文工程图的转换…36
5设计小结38
致谢…39
参考文献…40
附录