四轴球体研磨机的均匀性研究

建立了四轴球体加工时的力学模型，分析了加工球与四研具之间的运动关系，给出了研具上一点相对加工球的速度矢量，在Preston方程基础上，建立了四轴球体研磨机实现球面均匀研磨的分析模型，并应用matlab软件对单位时间去除量进行仿真分析。采用方差的指标评价研磨去除量得均匀性。分析结果表明研具改变转向的相位角为90°时方差最小，为了达到研磨均匀性必须改变四个研具的旋转方向。

Uniformity of Four Shaft Ball Lapping Machine

A mechanical model was developed for the four shaft ball lapping machine. The velocity vector of relative machining sphere at one point of the lapping cup was obtained by analyzing the relation between the four lapping cup and machining sphere. The analyzing model for the lapping machine to realize uniform lapping on a ball surface was set up based on Preston equation. And the Matlab software was used to conduct the simulation analysis on unit time deduction.Lapping uniformity was evaluated using variance. When cup turning and reversing is 90°out of phase, the better variance was obtained. In order to obtain lapping uniformity, running direction of four cup must changed.