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用机铰刀在机床上铰孔时,由于工件和刀具都是刚性体,加之机床精度不高,铰后孔的尺寸精度和几何精度很难保证。如采用工件浮动,有相当数量的工件,因受体积或加工方法的限制,而不能采用。铰刀浮动夹头,可保证工件和刀具的同轴度,使其加工孔达到理想的精度。此夹头可用于钻床、镗床、铣床、车床及其它机床上,完成精铰孔工作。结构与工作原理如图所示。铰刀1用螺钉2锁紧在夹套3上,靠弹簧4
Machine reamers reaming hole in the machine, due to the workpiece and the tool are rigid bodies, coupled with the machine tool is not high precision, the dimensional accuracy of hinged hole and geometric accuracy is difficult to guarantee. Such as the use of floating parts, a considerable number of workpieces, due to volume or processing methods, and can not be used. Reamer floating chuck, to ensure that the workpiece and the coaxiality of the tool to make the hole to achieve the desired accuracy. This chuck can be used for drilling, boring machine, milling machine, lathe and other machine tools to complete the fine reaming work. Structure and working principle as shown. Reamer 1 with a screw 2 locked in the jacket 3, by the spring 4