磨削中心孔的磨轴需要很高的转速和精度，我厂生产的系列中心孔磨床的磨轴最高转速达45000r／min，轴端的轴向窜动和径向跳动皆为0．002mm，所以磨轴的装配和加工都有很大的难度。最初小皮带轮和砂轮轴的联接采用图a所示结构，两者之间通过月牙键传递扭矩，轴向用螺母顶紧。砂 Grinding the center hole grinding shaft requires high speed and accuracy, I produced a series of center hole grinder grinder shaft maximum speed of 45000r / min, axial shaft axial and radial runout are all 0.002mm, so Grinding shaft assembly and processing are very difficult. The first small pulleys and grinding wheel shaft connection shown in Figure a structure, between the two through the crescent key transmission torque, the axial nut tightened. sand