| 摘要 |
A copper disc for sapphire polishing; the annular surface of the copper disc (1) is provided with spiral or concentric circular grinding grooves (11) thereon; and a stepped groove (12) is provided at the edges along both the outer ring and inner ring of the annular surface of the copper disc. Also provided is a method of repairing a double-face copper disc for sapphire polishing, comprising: first step, horizontally and transversally moving an upper copper disc and a lower disc turning tool, or a lower copper disc and an upper disc turning tool, and aligning the turning tool with the original position of the grinding groove on the corresponding copper disc; second step, controlling the upper copper disc and the lower copper disc to rotate in opposite directions at the same rotation speed and with the turning tools fixed, controlling the upper copper disc or the lower copper disc to be fed transversely, and turning a corresponding grinding groove via the turning tools; third step, removing the turning tools and washing the surface of the corresponding copper discs. |
