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一、液压心轴的工作原理液压心轴是使用液压油作为其工作介质，它是通过液压心轴里面所设置的增压机构来产生压力源，再通过心轴中各个流通油道，使其胀套产生微量变形，来实现液压心轴外圆胀大的功能，达到定位和胀紧工件内孔的目的（如图１所示）。它的夹紧力是由液压油的压
First, the working principle of the hydraulic mandrel Hydraulic mandrel is the use of hydraulic oil as its working medium, which is set by the hydraulic mandrel inside the pressure generating mechanism to generate pressure, and then through the mandrel in all the circulation of oil so that Expansion sleeve produces a small amount of deformation, to achieve the expansion of the hydraulic mandrel outer function, to locate and expand the purpose of the hole in the workpiece (Figure 1). Its clamping force is the pressure of hydraulic oil