EM165柴油机机体机械加工工艺及其组合机床钻孔夹具设计.doc
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- EM165 柴油机 机体 机械 加工 工艺 及其 组合 机床 钻孔 夹具 设计
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1、摘 要 箱体类是机器或部件的基础零件,它将机器或部件的一些轴、套、轴承和齿轮等有关零件装配起来,使其保持正确的相互位置关系,以传递转矩或改变转速来完成规定的运动。因此,箱体的加工质量对机器的工作精度、使用性能和寿命都有直接的影响。箱体零件虽然结构多种多样,但有共同的特点:多为铸造件,结构复杂,壁薄且不均匀,内部呈腔形,加工部位多,加工难度大。既有精度要求较高的孔系和平面,也有许多精度要求较低的紧固件。箱体类零件上面的孔与孔之间有较高的位置精度(孔与孔的平行度、孔的轴线与面有垂直度要求),其加工质量的好坏直接影响柴油机的精度和使用性能,因此柴油机汽缸的加工质量至关重要。箱体类零件的机械加工劳动量
2、约占整个产品加工量的15%20%。 机体是柴油机中的重要部件,属于箱体类构件。属于大规模生产。本次设计做的是“柴油机机体机械加工工艺及其组合机床钻孔夹具设计”,主要是先对机体进行零件分析;然后进行毛坯确定,根据尺寸画出毛坯图;再后进行加工工序的设定以及确定切削用量和加工工时;最后进行指定工序的夹具设计。关键词:机体;零件分析;毛坯图;切削用量 ;夹具 Abstract Box class is the foundation of the machine parts or components, the relevant parts of some axis machines or parts
3、of it, sets, such as bearings and gears assembled to maintain the correct relationship between the mutual position to transmit torque or changing the speed to complete the required movement. Therefore, the cabinet processing quality precision machine work, performance and life has a direct impact. A
4、lthough the structure of a variety of cabinet parts, but there are common characteristics: mostly casting, complex, thin wall and uneven, was inside the chamber shape, machining parts and more difficult process. Both high precision and holes in the plane, there are many low precision fasteners. Betw
5、een the hole and the hole box parts above the high position accuracy (parallel hole and the hole, the hole axis and the vertical plane of the request), the processing quality directly affect the accuracy and performance of the diesel engine Therefore the quality of critical processing engine cylinde
6、r. Machining box parts labor accounts for about 15% to 20% of the entire product processing volume. Airframe is important component in diesel , belongs to box body kind structure. In society procedure of production belong to give birth to a child in large scale. The part , being to be in progress fi
7、rst to the cylinder mainly analyses the diesel collective machine work handicraft and their combination machine tool borehole grip design designing being composing originally time; And then, the blank being in progress ascertains , draws up according to the dimension blank picture; Again, the queen
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