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调压阀是凿岩机主要零件之一,其里孔φ12D_1,光洁度?8,加工中能否保证调压阀里孔的精度要求,直接影响控制气腿进气方向的准确性。调压阀零件的材料为20Cr,淬火HRC50～55,工件形状如图1所示。对于此件的里孔加工,过去我厂采用内圆磨削,设备为日式内圆磨床VTG—15,磨头转速n_2=20,000转/分,砂轮为GB60~#ZR_1φ10×61mm。磨削时,由于零件径向多孔,砂轮
Pressure regulating valve is one of the main parts of rock drill, the hole φ12D_1, smoothing? 8, the processing can guarantee the accuracy of the pressure regulator valve hole requirements directly affect the accuracy of the control leg air intake direction. Pressure regulating valve parts of the material 20Cr, quenching HRC50 ~ 55, the workpiece shape shown in Figure 1. For the hole machining of this piece, in the past, our factory adopted the internal grinding, the equipment is the Japanese internal grinder VTG-15, the grinding head speed is n_2 = 20,000 rev / min and the grinding wheel is GB60 ~ # ZR_1φ10 × 61mm. Grinding, due to radial porous parts, grinding wheel