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JPS57128909A - Manufacture of permanent magnet having a plurality of radial magnetic dipoles - Google Patents

Manufacture of permanent magnet having a plurality of radial magnetic dipoles

Info

Publication number
JPS57128909A
JPS57128909A JP1375681A JP1375681A JPS57128909A JP S57128909 A JPS57128909 A JP S57128909A JP 1375681 A JP1375681 A JP 1375681A JP 1375681 A JP1375681 A JP 1375681A JP S57128909 A JPS57128909 A JP S57128909A
Authority
JP
Japan
Prior art keywords
magnetic
magnetic field
coil
magnetic pole
permanent magnet
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.)
Granted
Application number
JP1375681A
Other languages
Japanese (ja)
Other versions
JPS6134249B2 (en
Inventor
Yasuo Fujimura
Taku Osada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokin Corp
Original Assignee
Tohoku Metal Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tohoku Metal Industries Ltd filed Critical Tohoku Metal Industries Ltd
Priority to JP1375681A priority Critical patent/JPS57128909A/en
Publication of JPS57128909A publication Critical patent/JPS57128909A/en
Publication of JPS6134249B2 publication Critical patent/JPS6134249B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

PURPOSE:To obtain a permanent magnet having a plurality of radial magnetic pair, by applying radial magnetic field to magnet powder with a multipole electromagnet, and performing pressing magnetic field orientation of magnet powder. CONSTITUTION:An even number of members which have a magnetic pole projecting inside from a coil 4 are arranged as a magnetic field generator. A ring iron 6 is provided to connect the outer end of magnetic pole 5 on the outer circle. A cylindrical mold die 7 is arranged at the center of magnetic pole 5 in which powder is filled. Magnetic field is generated by the coil 4. The winding direction and electrifying direction of the coil 4 is determined so that the neighboring magnetic pole 5 differs from each other. V-shaped lines of magnetic force are generated between magnetic poles 5a and 5b. Rare-earth magnet powder 1 filling inside the mold die 7 is oriented magnetically in radiating direction along the V-shaped magnetic force H.
JP1375681A 1981-02-03 1981-02-03 Manufacture of permanent magnet having a plurality of radial magnetic dipoles Granted JPS57128909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1375681A JPS57128909A (en) 1981-02-03 1981-02-03 Manufacture of permanent magnet having a plurality of radial magnetic dipoles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1375681A JPS57128909A (en) 1981-02-03 1981-02-03 Manufacture of permanent magnet having a plurality of radial magnetic dipoles

Publications (2)

Publication Number Publication Date
JPS57128909A true JPS57128909A (en) 1982-08-10
JPS6134249B2 JPS6134249B2 (en) 1986-08-06

Family

ID=11842091

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1375681A Granted JPS57128909A (en) 1981-02-03 1981-02-03 Manufacture of permanent magnet having a plurality of radial magnetic dipoles

Country Status (1)

Country Link
JP (1) JPS57128909A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5961008A (en) * 1982-09-30 1984-04-07 Daido Steel Co Ltd Manufacturing method of ring-shaped anisotropic magnet
US4547758A (en) * 1982-12-02 1985-10-15 Hitachi Metals, Ltd. Cylindrical permanent magnet and method of manufacturing
US4600555A (en) * 1983-05-20 1986-07-15 Hitachi Metals, Ltd. Method of producing a cylindrical permanent magnet
JPS61194801A (en) * 1985-02-25 1986-08-29 Tohoku Metal Ind Ltd Anisotropic resin magnet
JPS6288312A (en) * 1985-10-15 1987-04-22 Tohoku Metal Ind Ltd Forming method for rare earth cobalt magnet in magnetic field
JPS6398606U (en) * 1986-12-18 1988-06-25
JPH02305A (en) * 1988-12-16 1990-01-05 Daido Steel Co Ltd Plastic magnet
USRE34229E (en) * 1982-12-02 1993-04-20 Hitachi Metals, Ltd. Cylindrical permanent magnet and method of manufacturing
US7416358B2 (en) 2003-04-15 2008-08-26 L'oreal Applicator intended to be attached to a finger
CN104347261A (en) * 2014-10-10 2015-02-11 宁波金鸡强磁股份有限公司 Orientation device and orientation method for radiation ring magnet

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5961008A (en) * 1982-09-30 1984-04-07 Daido Steel Co Ltd Manufacturing method of ring-shaped anisotropic magnet
US4547758A (en) * 1982-12-02 1985-10-15 Hitachi Metals, Ltd. Cylindrical permanent magnet and method of manufacturing
USRE34229E (en) * 1982-12-02 1993-04-20 Hitachi Metals, Ltd. Cylindrical permanent magnet and method of manufacturing
US4600555A (en) * 1983-05-20 1986-07-15 Hitachi Metals, Ltd. Method of producing a cylindrical permanent magnet
JPS61194801A (en) * 1985-02-25 1986-08-29 Tohoku Metal Ind Ltd Anisotropic resin magnet
JPS6288312A (en) * 1985-10-15 1987-04-22 Tohoku Metal Ind Ltd Forming method for rare earth cobalt magnet in magnetic field
JPS6398606U (en) * 1986-12-18 1988-06-25
JPH02305A (en) * 1988-12-16 1990-01-05 Daido Steel Co Ltd Plastic magnet
US7416358B2 (en) 2003-04-15 2008-08-26 L'oreal Applicator intended to be attached to a finger
CN104347261A (en) * 2014-10-10 2015-02-11 宁波金鸡强磁股份有限公司 Orientation device and orientation method for radiation ring magnet

Also Published As

Publication number Publication date
JPS6134249B2 (en) 1986-08-06

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