砂轮主轴与电机一体，采用预加载荷的高精度滚动轴承。
Wheel spindle and motor is either designed to use preload super precision ball bearing in a case.
砂轮主轴采用静动压轴承，主轴箱和导轨部分可分离，便于维修和更换。
The main shaft of grinding wheel adopts dynamic-static pressure bearing; the main shaft case and guide rail are separable so that they are convenient to service and replace.
建立了一种新的由砂轮不平衡量引起工件及砂轮主轴系统振动的力学模型。
A new mechanical model of the vibration between the workpiece and the main spindle caused by the grinding wheel unbalance is proposed in this paper.
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