Metal working – Method of mechanical manufacture – Electrical device making
Patent
1998-07-28
1999-12-28
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
29732, 29736, H02K 1514
Patent
active
060064161
ABSTRACT:
In one face of an annular permanent magnet 20, notch recesses 30 and 31 are formed in diameter directions which are different in phase by 90.degree. and used as positioning recesses 30 and fixing recesses 31. The positioning recesses 30 are positioned with respect to a mounting jig 41 by keys 61 which are similar to a magnetizing head, and fixed in the portions of the fixing recesses 31 by plastic working which is performed on an end face 62 of a case 18 by incision and bend cutters 48. Therefore, both the magnetization and the mounting can be performed by using the same reference, i.e., the positioning recesses 30 of the permanent magnet 20, and hence the accuracy of the magnetized positions can be ensured.
REFERENCES:
patent: 5661894 (1997-09-01), Kawasaki et al.
Katagiri Masayuki
Takei Hiromitsu
Hall Carl E.
Kabushiki Kaisha Sankyo Seiki Seisakusho
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