摘  要
     本次设计内容涉及了机械制造工艺及机床夹具设计、公差配合与测量等多方面的知识。通过对知识的综合运用，设计了外筒零件的加工工艺规程及夹具的设计。外筒加工工艺规程及磨床的夹具设计包括零件加工的工艺设计、工序设计以及磨床夹具的设计三部分。在工艺设计中要首先对外筒零件进行分析，了解外筒零件的工艺再设计出毛坯的结构，并选择好外筒零件的加工基准，设计出外筒零件的工艺路线；接着对外筒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；然后重点进行磨床夹具的设计，磨床夹具设计的要点，选择设计出夹具的各个组成部件，如夹紧元件、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。设计磨床夹具是为了生产过程中能方便快捷的完成磨平面工序的加工，从而提高生产效率。通过夹具设计掌握所学的机械知识，使之相互联系，进一步使理论和实践相结合，并巩固了知识点。
 关键词:外筒零件，工艺规程，磨床夹具 
ABSTRACT

  The design content of the mechanical manufacturing technology and machine tool fixture design, tolerance matching and measurement of aspects of knowledge. Through the integrated use of knowledge, design of the outer barrel parts machining process planning and fixture design. External processing technical process and grinding machine of fixture design including parts processing process design, process design and grinding machine fixture design three parts. Must first foreign tube parts in process design were analyzed, and the outer tube parts technology to design the structure of blank, and choose good outer barrel parts processing benchmark, sticking out of the barrel parts design process; Then foreign tube parts size of each work step of the process, the key is to determine the process equipment for each process and cutting parameter; Then the grinding machine fixture design, the main points of the grinding machine fixture design, select design out of the component parts of the fixture, such as clamping components and guide components, clip specific connection with machine parts and other parts; Calculated at the exit of fixture locating position error, analysis the rationality of the fixture structure and deficiency, and pay attention to the improvement in the later design. Grinding machine fixture is designed to process that can be convenient and quick plane grinding process to complete the processing, thus improve the production efficiency. Through the knowledge of the mechanical fixture design master what they have learned, to connect with each other, further to combine theory and practice, and consolidate the knowledge.
 Key words：Outside the cylinder,Process planning,Grinding machine fixture
目 录