总泵缸体零件的加工工艺及夹具设计（机械cad图纸） 毕设论文.docVIP

学科门类： 单位代码 ： 毕业设计说明书（论文） 总泵缸体零件的加工工艺及夹具设计 学生姓名 所学专业 班 级 学 号 指导教师 XXXXXXXXX系 二○**年XX月 摘　要 这次设计的是总泵缸体。包括零件图、毛坯图、装配图各一张，根据零件的性质和零件图上各端面的粗糙度确定毛坯的尺寸和机械加工余量。最后制定该工件的夹紧方案，画出夹具装配图。 此次机械制造工艺学设计是我们学完了大学的全部基础课、Abstract The master cylinder is designed. Including spare parts map, blank map, an assembly of all, machining processes and process the card and a card each. According to the nature of parts and components map to determine the roughness of the rough end of the size and allowances. Finalization of the cap and push-rod technology road map, the development of the clamping of the workpiece program, draw fixture assembly.  Machinery Manufacturing Technology curriculum design is that we learn all over the University of basic courses, technical courses in basic subjects, as well as after the majority. This is our graduation project in the school prior to the course of an in-depth and comprehensive review of the total, is also a theory with practice and training, therefore, its four years of university life, we occupy an important position.  For me personally, I hope that through the curriculum design of their future work to conduct a practical training, to exercise their own analysis, problem-solving abilities. As a result of capacity constraints, the design there are many deficiencies, I urge you to give guidance to teachers. 目录 一、零件的分析 5 1.1 零件工作原理 6 1.2 零件工艺分析 6 二、工艺规程设计 7 2.1 确定毛坯制造形式 7 2.2基面选择 7 2.3工艺路线 7 三、机械加工余量，工序尺寸及毛坯尺寸的确定。 8 四、确定切削用量及工时 10 4.1车、车内孔达ф22+0.023。⊿1.6；车端面保证12，⊿12.5 10 4.2)铣端面达 ⊿6.3 11 4.3）钻M22×1.8孔达图，钻小孔达图 11 4.4、钻螺纹孔ф10.5，功牙至M12×1.25 13 五、夹具设计 13 5.1.1定位基准选择 14 5.1.2定位误差分析： 14 六、设计小结 16 七、参考书目 17 一、零件的分析 1.1 零件图 1.1 零件工作原理 题目所给定的零件是总泵缸体。是整个液压系统的核心，作用是通过活塞的来回往复运动产生推动工作缸动作所需的油压。该零件ф3.5为进油孔，活塞运动过该位置时，完成充油过程，活塞继续运动将油推向前方，挤压出缸体，由于截面积差产生工作压力。当活塞回程时超过3.5孔位时开始进油，旁边小孔为空气孔，方便进空气