阀腔加工工艺及钻、攻M12底孔夹具设计.doc

优秀机械毕业设计欢迎下载,学习交流加 QQ197216396 专业机械设计解君之忧 I 阀腔工艺规程制定与夹具设计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。阀腔零件的工艺规程及铣工件上端面及钻、攻M12 螺纹的工装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。优秀机械毕业设计欢迎下载,学习交流加 QQ197216396 专业机械设计解君之忧 I The planning process and fixture design Abstract This design involves the machinery manufacturing process and fixture design, metal cutting machine tool, tolerance and measurement and other aspects of knowledge. Parts of the process and the valve cavity milling on surface and drilling, tapping the M12 thread fixture design process design, including the parts processing process design and fixture three. In the process of design should first of all parts for analysis, to understand the parts of the process to design blank structure, and choose the good parts machining datum, design a part of the process route; then the parts of each step of the process dimension calculation, is the key to determine the process equipment and cutting the amount of each working procedure design; then the special fixture fixture design, selection of the ponents, such as the connecting part positioning element, clamping elements, guiding elements, fixture and machine tools and ponents; the positioning errors calculated fixture positioning, analysis the rationality and ing of the fixture structure, pay attention to improve and design in later. Key words: Technology, process, cutting dosage, clamping, positioning, error. 优秀机械毕业设计欢迎下载,学习交流加 QQ197216396 专业机械设计解君之忧 II 目录第1章绪论................................................................................................................................... 1 引言.................................................................................................................................... 1 机械加工工艺规程的作用......