毕业设计-法兰盘加工工艺及夹具设计.docVIP

 PAGE - 86 - 摘 要 工艺学是研究机械加工工艺技术和夹具设计为主的技术学科,具有很强的实践性,要求学习过程中应紧密联系生产实践,同时它又具有很强的综合性。 本次毕业设计研究的课题是法兰盘加工工艺及夹具的设计，主要内容如下： 首先，对零件进行分析，主要是零件作用、结构和工艺的分析，通过零件分析可以了解零件的基本情况，而工艺分析可以知道零件的加工表面和加工要求。根据零件图提出的具体加工要求，确定毛坯的制造形式和尺寸。 第二步，进行基面的选择，确定加工过程中的粗基准和精基准。根据选好的基准，制定工艺路线方案，通常情况下制定两种以上的工艺路线方案，通过工艺方案的比较分析，再确定出可以使零件的几何形状、尺寸精度及位置精度等技术要求得到合理保证的工艺路线方案。 第三步，根据已经确定的工艺路线，选择加工设备及工艺装备，再确定每一工步的切削用量及时间定额。 第四步，设计工序Ⅶ—钻法兰盘4mm斜孔的夹具。先提出夹具设计任务，选择定位基准，再确定夹具结构方案，然后开始切削力、夹紧力的计算和定位误差的分析。 最后，把整个设计过程整理为设计说明书和图纸，至此整个设计基本完成。 关键词：法兰盘；加工工艺；夹具设计。 Abstract Technology is the study of machining fixture design technology and technology-based disciplines, with a very practical, requiring close contact with the learning process should be productive practice, but it also has a strong and comprehensive. The issue is the graduation of flange and fixture design process, the following key elements: First, the analysis of parts, mainly the role of parts, structural and process analysis, part by part analysis to understand the basic situation, The process analysis to know the machining surface and machining requirements. According to the specific part drawing processing requirements, to determine the manufacture of blank forms and dimensions. The second step, the choice of the base surface to determine the processing of coarse and fine reference base. According to the chosen benchmark, the development process route programs, usually two or more of the process line development program, through the process of comparative analysis of the program, and then determine the geometry can make the part shape, size and location accuracy of a reasonable accuracy and other technical requirements programs to ensure the process route. The third step, according to process routes have been identified, select the processing equipment and process equipment, and then determine the amount of each process step of cutting and time fixed for the rough. The fourth step, the design process Ⅶ - 4mm Flange drilling inclined holes of the fix