| 摘要 |
<p>PURPOSE:To polish a mirror surface having uniform surface roughness in a short time by providing an eccentric shaft between a motor and a polishing plate, eccentrically rotating the polishing plate, an revolving the polishing plate in the mirror surface finishing method of a plastic mold, etc. CONSTITUTION:For example, a general-purpose drilling machine is constituted with a motor 1, a main shaft 2, and a lever 3. Multiple screw holes are provided on an eccentric plate 4a, an eccentric shaft 4b is made in one body by performing thread cutting, but the eccentricity quantity can be changed freely, and it can be fitted to the main shaft 2 freely. A diamond paste film 7 is applied between the mirror finishing surface of a material to be polished 6 and the polishing plate 5, and the mirror surface is finished by rotating the main shaft 2. A polishing plate hole 8 is not a through hole, but the diameter of the hole 8 is larger than that of the eccentric shaft 4b, thereby the polishing plate 5 is also revolved when the eccentric shaft 4b is inserted into the polishing plate hole 8 and the eccentric motion is performed.</p> |
