| 摘要 |
PURPOSE:To permit the high speed polishing of a magnetic head by installing a flexible disc-shaped polishing sheet, revolution drive part, straightening plate for generating an air stream and revolving the polishing sheet at a high speed and floating-up-revolving the polishing sheet for the straightening plate. CONSTITUTION:When a polishing sheet 1 is revolved by a motor 3, an air stream entrained by the revolution of the sheet 1 is generated in the gap part between the sheet 1 and the surface 6 of a straightening plate 2. Since the flow speed on the outer periphery is larger than that of the inner peripheral part, a low pressure is generated, and the outer peripheral part of the sheet 1 is attracted to the straightening plate 2 side, and at the same time, the air stream towards the outer peripheral part from an intake passage 7 is generated, and a force for pushing up the sheet 1 acts. In the high speed revolution, the sheet 1 floating-up-revolves under keeping a stable gap between the surface 6 of the straightening plate 2. Therefore, a magnetic head 4 is attached onto the surface of the sheet 1, and polishing is performed. Therefore, the simple constitution is obtained, and the polishing time can be reduced. |
