JPS5512795A - Method of producing circular magnet - Google Patents
Method of producing circular magnetInfo
- Publication number
- JPS5512795A JPS5512795A JP8648078A JP8648078A JPS5512795A JP S5512795 A JPS5512795 A JP S5512795A JP 8648078 A JP8648078 A JP 8648078A JP 8648078 A JP8648078 A JP 8648078A JP S5512795 A JPS5512795 A JP S5512795A
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- magnetic flux
- magnetic
- circular magnet
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To increase the magnetic flux density of a circular magnet by successively varying the inclination of magnetic orientation in such a manner that the magnetic orientation in the magnet exhibits a ferromagnetic characteristic to the flow of magnetizing magnetic flux.
CONSTITUTION: A mixture of ferrite particles 1 and a rubber bonding these particles is made to pass through a gap between rolls 3, thereby to form a magnet sheet 4 in which the ferrite particles are orientated in the direction of the rolling of the sheet 14. A plurality of magnet sheets thus formed are superposed to form a laminate structure of a desired thickness, and a disc-shaped magnet material 6 is formed by punching from this laminated structure. Then, a magnetic body 7 having a plurality of radial projections 7', each having a triangular cross-section with a keen end, is pressed against the magnet material 6 until the projections 7' are completely embedded in the latter, so that a composite article 8 is formed. This composite articles is magnetized by means of a magnetizing yoke. This process makes it possible to produce a circular magnet having a high surface magnetic flux density at a low cost of production.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8648078A JPS5512795A (en) | 1978-07-14 | 1978-07-14 | Method of producing circular magnet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8648078A JPS5512795A (en) | 1978-07-14 | 1978-07-14 | Method of producing circular magnet |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5512795A true JPS5512795A (en) | 1980-01-29 |
Family
ID=13888126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8648078A Pending JPS5512795A (en) | 1978-07-14 | 1978-07-14 | Method of producing circular magnet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5512795A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10332427A (en) * | 1997-05-28 | 1998-12-18 | Nippon Seiko Kk | Roller bearing unit with encoder |
EP1205735A1 (en) * | 2000-10-24 | 2002-05-15 | Uchiyama Manufacturing Corp. | Magnetic encoder and method of manufacturing same |
JP2017139402A (en) * | 2016-02-05 | 2017-08-10 | 愛知製鋼株式会社 | Magnetic marker manufacturing method |
JP2017139401A (en) * | 2016-02-05 | 2017-08-10 | 愛知製鋼株式会社 | Magnetic marker and manufacturing method therefor |
JP2021077907A (en) * | 2021-01-28 | 2021-05-20 | 愛知製鋼株式会社 | Magnetic marker manufacturing method, laminate, and holder |
-
1978
- 1978-07-14 JP JP8648078A patent/JPS5512795A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10332427A (en) * | 1997-05-28 | 1998-12-18 | Nippon Seiko Kk | Roller bearing unit with encoder |
EP1205735A1 (en) * | 2000-10-24 | 2002-05-15 | Uchiyama Manufacturing Corp. | Magnetic encoder and method of manufacturing same |
US6602571B2 (en) | 2000-10-24 | 2003-08-05 | Uchiyama Manufacturing Corp. | Method for manufacturing magnetic encoders and magnetic encoders manufactured by using such method |
JP2017139402A (en) * | 2016-02-05 | 2017-08-10 | 愛知製鋼株式会社 | Magnetic marker manufacturing method |
JP2017139401A (en) * | 2016-02-05 | 2017-08-10 | 愛知製鋼株式会社 | Magnetic marker and manufacturing method therefor |
JP2021077907A (en) * | 2021-01-28 | 2021-05-20 | 愛知製鋼株式会社 | Magnetic marker manufacturing method, laminate, and holder |
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