在液压元件中,各种阀体的环形空刀槽,在轴向间距上和径向深度上,都有一定的精度要求。图1为二位四通及三位五通换向阀的空刀槽尺寸,对这种换向阀来说,如果空刀槽相互间间距的误差过大,就会直接影响各口的油封和开口量,从而使泄漏量及流量不一致;如果空刀槽挖浅了,会使阀的压力 In the hydraulic components, a variety of valve body ring empty Slot, in the axial spacing and radial depth, there is a certain accuracy requirements. Figure 1 for the two four-way and three five-way valve size of the empty tool for this valve, if the gap between the empty knife is too large a margin, it will directly affect the mouth of the oil seal And the amount of openings, so that the amount of leakage and flow inconsistency; if the empty Slot dug shallow, will make the valve pressure