| 摘要 |
PURPOSE:To obtain a similar effect to the case where the load on an upper polishing tray is reduced by providing magnetic materials on both upper and lower polishing trays and magnetizing these magnetic materials so that said upper and lower trays repulse each other to effectively offset a part of the load on said upper polishing tray. CONSTITUTION:In the method of polishing spheres or spherical-surface bodies, the main body 11 of a lower polishing tray 1 has a support 12, while on its surface facing an upper polishing tray 2, conical grooves 14-1, 14-2... 14-i are formed and magnetic materials 13-1, 13-2... 13-j are also embedded. On the other hand, the main body 21 of the upper polishing tray 2 has a supporting shaft 22 while on its surface are embedded magnetic materials 24-1, 24-2... 24-j. Furthermore, the magnetic materials 13-1 to 13-j on the lower tray and the magnetic materials 24-1 to 24-j on the upper tray repulse each other due to the magnetic force. Thereby, the load on the upper tray 2 is effectively reduced without imposing excessive load on spheres 3-i when carrying out polishing. |
