毕业设计论文_车床转盘零件的机械加工工艺规程和专用夹具设计.docVIP

摘要 用与车外圆、端面和镗孔等加工的机床叫车床。车削很少在其他种类的机床上进行，因为其他机床都不能像车床那样方便地进行车削加工。由于车床除了用于车外圆外还能用于镗孔、车端面、钻孔和铰孔，车床的多功能性可以使工件在一次定位安装中完成多种加工。这就是在生产中普遍使用各种车床比其他种类的机床都要多的原因车床的主要部件：床身、主轴箱组件、尾架组件、拖板组件、变速齿轮箱、丝杠和光杠大多数车床的刀架安装在复式刀座上，刀座上有底座，底座安装在横拖板上。可绕垂直轴和上刀架转动；上刀架安装在底座上，可用手轮和刻度盘控制一个短丝杠使其前后移动。 Abstract The basic machines that are designed primarily to do turning, facing and boring are called lathes. Very little turning is done on other types of machine tools, and none can do it with equal facility. Because lathe can do boring, facing, drilling, and reaming in addition to turning, their versatility permits several operations to be performed with a single setup of the workpiece. These accounts for the fact that lathes of various types are more widely used in manufacturing than any other machine tool. Lathe Construction: The essential components of a lathe are depicted in the block diagram. These are the bed, headstock assembly, tailstock assembly, carriage assembly, quick-change gear box, and the lea crew and feed rod. On most lathes the tool post actually is mounted on a compound rest. This consists of a base, which is mounted on the cross slide so that it can be pivoted about a vertical axis, and an .upper casting. The upper casting is mounted on ways on this base .so that it can be moved back and forth and controlled by means of a short lead screw operated by a hand-wheel and a calibrated dial. The turntable is fastened to the middle slip board by bolts. Loose the nut, we can make the turntable rotated in the level for no mater what angle. The minor slip board can move along the rail of turntable for a short distance. When the turntable rotates an angle, the minor slip board will make a sidelong displacement carrying. Generally, the turntable locates between the up and down knife rest, it is the up knife rest’s oriented member. When we want to cut the cone by using the minor, we can rotate the turntable. This essay will cover an integrated analyzing and demonstrates about the turntable