| 摘要 |
<p>A multiplicity of abrading discs are individually mounted in an abrading head. The discs are each self-aligning for following the contour of the surface to be abraded. The discs are rotated to abrade the surface and a multiplicity of openings in the head permit debris, generated by the discs, to be removed from the work by a vacuum source attached to the head.</p> |
