JPS5748215A - Manufacture of iron core - Google Patents

Manufacture of iron core

Info

Publication number
JPS5748215A
JPS5748215A JP12346580A JP12346580A JPS5748215A JP S5748215 A JPS5748215 A JP S5748215A JP 12346580 A JP12346580 A JP 12346580A JP 12346580 A JP12346580 A JP 12346580A JP S5748215 A JPS5748215 A JP S5748215A
Authority
JP
Japan
Prior art keywords
core
air gap
electron beam
gap
iron core
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
Application number
JP12346580A
Other languages
Japanese (ja)
Inventor
Yoshihiro Endo
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12346580A priority Critical patent/JPS5748215A/en
Publication of JPS5748215A publication Critical patent/JPS5748215A/en
Pending 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
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0233—Manufacturing of magnetic circuits made from sheets

Abstract

PURPOSE:To improve the dimensional accuracy of an air gap and improve the function of an iron core, by a method wherein in order to form an air gap in a core of an electromagnetic contactor or the like, the air gap is formed by an electron beam after laminated magnetic steel plates are compressed into a unitary body by rivets or the like with side plates on both sides. CONSTITUTION:A plurality of magnetic steel plates of indented shape are laminated and held between two side plates 3 and fixed by, for instance, rivets 4. Then after shaving coils 6 are mounted on polar surfaces 5 of the core, cutting process of an air gap 7 is performed by an electron beam equipment. With above method the space of the gap is determined by a diameter and a power of the electron beam and does not have to be adjusted by a gauge or the like. And a variation of the gap space caused by rivetting after the adjustment by the gauge does not occur while it is expected in the case of the conventional core, so that the dimensional accuracy of the air gap is improved. Moreover, because of the electron beam process, a heat generation is so low that no strain is applied to the core, so that the iron core of the high quality without any functional trouble is provided.
JP12346580A 1980-09-08 1980-09-08 Manufacture of iron core Pending JPS5748215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12346580A JPS5748215A (en) 1980-09-08 1980-09-08 Manufacture of iron core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12346580A JPS5748215A (en) 1980-09-08 1980-09-08 Manufacture of iron core

Publications (1)

Publication Number Publication Date
JPS5748215A true JPS5748215A (en) 1982-03-19

Family

ID=14861295

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12346580A Pending JPS5748215A (en) 1980-09-08 1980-09-08 Manufacture of iron core

Country Status (1)

Country Link
JP (1) JPS5748215A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61122823A (en) * 1984-11-19 1986-06-10 松下電器産業株式会社 Automatic hand dryer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61122823A (en) * 1984-11-19 1986-06-10 松下電器産業株式会社 Automatic hand dryer

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