| 摘要 |
PURPOSE:To enable execution of two kinds of flattening works on a plane member, e.g. printed board, through a simple polishing device, by a method wherein an approximately rectangular polishing member is formed with a brush on the upper stream side and a polishing stone on the downstream side, and the brush and the polishing stone are driven by means of an eccentric shaft. CONSTITUTION:A brush body (brush) 10 of an approximately rectangular polishing brush part 4 and a grinding stone 15 are eccentrically moved through an eccentric shaft 12 with the aid of one and the same motor, and a surface 2a of a conveyed printed board 2 is polished. In this case, after helical brush streaks are formed in the surface 2a of the printed board 2 by means of the brush body 10, the surface 2a of the printed board smoothly coarsened by the brush tooth is smoothly polish-finished by means of a grinding stone 15. |
