基于Proe阀体加工工艺及夹具设计毕业设计论文精品.doc

基于Proe阀体加工工艺及夹具设计 摘 要 该设计是为了让我们对计算机辅助设计，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有一个较好的掌握。 阀体零件加工工艺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，以及所用的工时，制定工艺过程卡以及十道工序的工序卡片；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。 通过对本课题的设计，让我们更加贴近实际生产环节，能够更加巩固所学知识。 关键词：工艺；工序；切削用量；夹紧；夹具；定位；误差 Based on Proe valve processing technology and fixture design Abstract This designed to make us for computer aided design, mechanical manufacturing technology and machine tool fixture design, metal cutting machine tool, tolerance matching and measurement of various knowledge have a good grasp. The valve body component is include 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, Understand the parts of process to design the structure of blank, and chooses the good components the processing datum, designs the components the craft route; After that is carrying on the size computation to a components each labor step of working procedure, the key is decides each working procedure the craft equipment and the cutting specifications, and working hours , develop process cards and ten procedure of process card ,Then carries on the unit clamp the design, the choice designs the jig each composition part, like locates the part, clamps the part, guides the part, to clamp concrete and the engine bed connection part as well as other parts; Position error which calculates the jig locates when produces, analyzes the jig structure the rationality and the deficiency, and will design in later pays attention to the improvement. Through the design of this topic, let us more close to the actual production process, to consolidate what they learned. Keywords: The craft； the working procedure； the cutting specifications； clamp；f