这种液压夹紧工具如图1和图2所示,在内部封入特殊的液体,由工作螺栓(或凸轮、气缸、油缸等)产生内压,使其在弹性界限内膨胀或收缩, 对工件进行夹紧。图1是使外径膨胀进行夹紧的液压心轴,图2是使内径收缩进行夹紧的液压夹头。其特点是:(1)膨胀或收缩量:直径为30毫米时,是0.08毫米;(2)振摆精度:心轴在 This hydraulic clamping tool shown in Figure 1 and Figure 2, the internal special liquid sealed by the working bolts (or cam, cylinder, cylinder, etc.) to produce internal pressure, so that it expands or contracts within the elastic limit, the workpiece Clamping. FIG. 1 is a hydraulic mandrel in which the outer diameter is expanded and clamped, and FIG. 2 is a hydraulic chuck in which the inner diameter is contracted and clamped. Its features are: (1) expansion or contraction: diameter of 30 mm, it is 0.08 mm; (2) pendulum accuracy: spindle in