A dynamic model of steel ball during the lapping process is presented to meet the requirement fulfill the superprecision machining of steel balls for satellite bearing.

• 为了适应卫星轴承钢珠精化的需要,建立了研磨过程中钢珠的动力学解析模型,分析了球与四研头之间的运动、四研头转向与球面加工、摩擦力与加工精度等关系。