发明名称 MANUFACTURING METHOD OF RARE EARTH SINTERED MAGNET AND MANUFACTURING METHOD OF MAGNET FOR VCM (VOICE COIL MOTOR)
摘要 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
申请公布号 JP2006041295(A) 申请公布日期 2006.02.09
申请号 JP20040221024 申请日期 2004.07.29
申请人 TDK CORP 发明人 SAITO YASUHIKO;SATO KAZUO;KOJIMA NOBUO;KUNIYOSHI YOICHI
分类号 H01F41/02;B22F3/02;B22F3/10;B22F3/24;C22C38/00;H02K15/03 主分类号 H01F41/02
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