| 简介 |
PROBLEM TO BE SOLVED : To provide the inexpensibly manufacturing method of a magnet for VCM having high magnetic characteristics.
SOLUTION : The manufacturing method comprises a forming process in magnetic field obtaining a formed body GB provided with a main surface arranged so as to be opposed to a pressurizing direction, and a side surface connecting the main surface and parallel to the pressurizing direction by impressing a magnetic field in a direction orthogonal to the pressurizing direction on material alloy powder; a formed body working process for applying grinding work on one part or the whole of the main surface and the side surface; and a sintering process for sintering the formed body GB worked by grinding. In the grinding work, it is preferable that a profile grinding stone 4 is arranged so as to be opposed to a profile grinding stone 5, and that profile working for the outer diametral surface, inner diametral surface and side surface of the formed body GB is carried out in a process for passing the formed body GB between the total grinding stone 4 and the profile grinding stone 5.
COPYRIGHT : (C)2006, JPO&NCIPI |
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