摘要
对浮动块研磨抛光机的运动学方程进行研究结果表明研磨时,任意磁头上任意一点的运动轨迹是周期性的,这种运动周期的重复性与工作圆环的角速度ω2和研磨盘的角速度ω1之比有关;当浮动块研磨抛光机在理想状态工作下时,ω1=ω2,此时,任意磁头上任意一点移动的路程相等,表明磁头表面去除率相同,但其轨迹的重复性太强。在实际工作中,磁头表面能取得均化的研磨条纹,而整个研磨平面的平整精度却不一定很高;任意一点在每周期移动的路程长度与角速度ω和偏心距e有关,ω和e越大,周期路程越长。而周期路程较短,表明轨迹的方向改变愈频繁,有利于获得愈好的表面质量,只是去除率降低。因此,粗研磨时,宜取较高的转速以提高效率;而精研磨时,宜取较低的转速以提高表面质量。
The kinematics equation demonstrates that the path of any point in any magnetic head is periodic in working process of float-piece polisher. The periodicity repeated according to the ratio of angular velocity between the work ring＇s and the lap＇ s. When the float-piece polisher works in the perfect condition, ω1 （lap＇s angular velocity） will equal ω2 （work ring＇s angular velocity）. Then, the length of movement path of any point in any magnetic will be equal, which indicates that the surface removal rate will be equal, but the periodicity of the path will be repeated too often. In fact, the perfect condition is hardly existing, so the movement path on magnetic head surface will be reasonable, while the work face will be not planar enough. The equation also shows that the path of any point in a periodicity is relational with the parameter ω and e（eccentricity of work ring）. The larger the parameter ω and e are, the longer the path will be. The path＇s direction will be changed more frequently if the movement path in every periodic is shorter, which will does good to surface quality, but the surface removal rate will be lower. So, the higher speed is supposed to be selected in rough polishing process to obtain higher removal rate, while the lower speed should be selected in fine polishing process to gain higher surface quality.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第6期1021-1025,共5页
Journal of Central South University:Science and Technology
基金
国家自然科学基金资助项目(50390061)
关键词
磁头
研磨
抛光
去除率
magnetic head
lapping
polishing
removal rate
