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1、摘 要拨叉的加工质量将直接影响机器的性能和使用寿命。本次设计旨在提高CA6140车床拨叉的加工效率，由此我们首先对拨叉的结构特征和工艺进行了仔细的分析，然后确定了一套合理的加工方案，加工方案要求简单，操作方便，并能保证零件的加工质量。在制定加工工艺规程的顺序如下：1分析零件；2选择毛坯；3设计工艺规程：包括制定工艺路线，选择基准面等；4工序设计：包括选择机床，确定加工余量，工序尺寸及毛坯尺寸，确定切削用量及计算基本工时等；5编制工艺文件。此外，为了提高劳动生产率，降低劳动强度，保证加工质量，需设计专用夹具，本次设计选择了第六道工序铣断双体的专用夹具设计，以满足加工过程的需要。关键词：拨叉; 工
2、艺规程; 夹具设计Abstract Dials the fork processing quality directly will affect the machine the performance and the service life. This design is for the purpose of enhancing the CA6140 Lathe machine Dials the fork the processing efficiency, first has carried on the careful analysis from this us to the Dial
3、s the fork structure characteristic and the craft, then had determined set of reasonable processings plans, the processing plan request are simple, the ease of operation, and can guarantee the components the processing quality. In formulation processing technological process order as follows:1 analy
4、sis the components;2 choices semifinished materials;3 designs technological process: Including division Craft route, preferred orientation datum and so on;4 working procedures designs: Including chooses the engine bed, the determination processing remainder, the computation working procedure size an
5、d its the Semifinished materials size, the determination cutting specifications and the computation man-hour and so on;5 establishments technological document.In addition, in order to enhance the labor productivity, reduces the labor intensity, guaranteed the processing quality, must design the unit
6、 clamp, this design chose the six working procedure to The mill breaks Catarmaran Special-purpose jig design, by satisfied the processing process the need.Key words: Dials the fork; technological process; jig desin。目 录推荐精选摘 要1前 言4 1 零件的分析511 零件的作用512 零件的工艺分析52 工艺规程的设计621 毛坯的制造形式622 基准面的选择推荐精选6221 粗基准的选择6222 精基准的选择623 制定工艺路线624 机械加工余量、工序尺寸及毛坯尺寸的确定825 确定切削用量及基本工时83 绘制零件图和编制工艺卡2631 绘制零件图263. 2 编制工艺文件推荐精选264 夹具设计28 41 问题的提出2842 夹具体设计28421 定位基准的选择28422 切削力及夹紧力的计算28423 定位误差分析30424 夹具设计及操作的简要说明推荐精选305 结论
