CA6140拨叉831002机加工工艺和钻直径60H12孔专用夹具设计【版本1】.rar

1 摘 要 本次设计内容涉及了机械制造工艺及机床夹具设计、金属切削机床、公差 配合与测量等多方面的知识。 拨叉加工工艺规程及其钻孔的夹具设计是包括零件加工的工艺设计、工序 设计以及专用夹具的设计三部分。在工艺设计中要首先对零件进行分析，了解 零件的工艺再设计出毛坯的结构，并选择好零件的加工基准，设计出零件的工 艺路线；接着对零件各个工步的工序进行尺寸计算，关键是决定出各个工序的 工艺装备及切削用量；然后进行专用夹具的设计，选择设计出夹具的各个组成 部件，如定位元件、夹紧元件、引导元件、夹具体与机床的连接部件以及其它 部件；计算出夹具定位时产生的定位误差，分析夹具结构的合理性与不足之处， 并在以后设计中注意改进。 关键词：工艺、工序、切削用量、夹紧、定位、误差。 2 ABSTRCT This design content has involved the machine manufacture craft and the engine bed jig design, the metal-cutting machine tool, the common difference coordination and the survey and so on the various knowledge. The reduction gear box body components technological process and its the processing 140 hole jig design is includes the components processing the technological design, the working procedure design as well as the unit clamp design three parts. Must first carry on the analysis in the technological design to the components, understood the components the craft redesigns the semi finished materials the structure, and chooses the good components t