| 摘要 |
PURPOSE:To stabilize the stock removal of corrective polishing for a microscopic part as well as to make yet more highly accurate polishing performable, by installing a pressurizing device, pressing a polishing tool to the polishing surface of a rotating workpiece at constant pressure, and also a tape feeding device feeding a tape with an abradant and traveling in space between the abrasive tool and the polishing surface. CONSTITUTION:In this device, there are provided with a weight 33, pressing a nose 38 to the polishing surface of a rotating workpiece 1 at constant pressure, a slide shaft 32, supporting this nose 38 free of slide motion toward the workpiece 1, and an abrasive feeder 40 feeding a lap tape 39 and traveling between the nose 38 and the polishing surface. With suchlike constitution, the lap tape 39 is fed to an interspace between the rotating workpiece 1 and the polishing surface and traveled between them, whereby the nose 38 is made so as to be pressed to the polishing surface at constant pressure, so that the uniform, new lap tape 39 is always fed, thus removal stock is stabilized. Accordingly, accuracy in such partial corrective polishing that polishes the workpiece while eliminating a partial form error at the time of machining an optical mirror, by may of example, is improvable.
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