| 摘要 |
PURPOSE:To make corrective polishing for a microscopic part stably and accurately performable, by forming the tip of a polishing tool, pressing the back of a taper with an abradant to be fed in the specified direction, with a spherical body of a steel ball or the like tightly attached. CONSTITUTION:A lap tape 39 is guided by a guide roller 58, entering an interspace between a lower groove part 38a of a nose 38 and a sleeve 74, and it passes through the exposed spherical tip part 38b as being bent, then it reenters the interspace between the upper groove 38a and the sleeve 74, accurately guided out of a guide roller 59, pressing the nose 38 to a polished surface, whereby polishing at an accurate working position comes possible. A tip form of the nose 38 is required to be of highly accurate sphericity, therefore spherical polishing for the tip part 38b is hard to be carried out at the integral type nose 38, so that a steel ball 106 for a bearing ball or the like on the market is tightly attached to a tip of a nose body 38c by a bonding agent or the like, and if each tape guide groove 106a is formed or both upper and lower surfaces, the highly accurate sphericity is obtained. Thus, fine partial corrective polishing is performable in a highly accurate manner. |
