| 摘要 |
<p>A grinder (1) comprising a resilient plate (2) having one side bonded to the back side of an abrasive cloth (3) and the other side on which a fastening means (5) for attaching the grinder (1) to the rotary shaft of a rotary grinding machine is provided, characterized in that longitudinal grooves (7a) and lateral grooves (7b) are provided in a grid form on the surface of the abrasive cloth (3) on the side abutting against an object to be ground.</p> |
