GB972717A - Improvements in magnetic cores and methods of making same - Google Patents

Improvements in magnetic cores and methods of making same

Info

Publication number
GB972717A
GB972717A GB45601/61A GB4560161A GB972717A GB 972717 A GB972717 A GB 972717A GB 45601/61 A GB45601/61 A GB 45601/61A GB 4560161 A GB4560161 A GB 4560161A GB 972717 A GB972717 A GB 972717A
Authority
GB
United Kingdom
Prior art keywords
knives
strip
laminations
stacks
width
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.)
Expired
Application number
GB45601/61A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB972717A publication Critical patent/GB972717A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
    • 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

Landscapes

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

Abstract

972,717. Shearing; making magnetic heads. GENERAL ELECTRIC CO. Dec. 20, 1961 [Dec. 27, 1960], No. 45601/61. Headings B3A and B3W. [Also in Division H1] A strip of magnetic material 74 (Fig. 11), of constant width W 3 ( = W 1 + W 2 ) is fed in the direction 76 by the two sets of rollers 71, 75 and the slitting knives 72 and shearing knives 78 are used to cut the two laminations 73, 74, of widths W 1 , W 2 respectively, from the strip. The knives 72 are indexed to the left in small equal steps between the cutting of successive pairs of laminations until at the final cut the width of 73 is W 2 and the width of 74 is W 1 . When the two sets of laminations thus formed are assembled in order, two substantially trapezoidal shaped stacks 32, 33 result and these may be assembled with other stacks to form a polygonal cross-sectioned magnetic core leg (Fig. 12). The slitting knives 72 may be replaced with a pair of shears and the knives or shears may be kept stationary while the strip is indexed laterally. Indexing may be controlled by a computer which is programmed so that the profile of the lamination stacks has a prescribed linear form.
GB45601/61A 1960-12-27 1961-12-20 Improvements in magnetic cores and methods of making same Expired GB972717A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78475A US3137832A (en) 1960-12-27 1960-12-27 Laminated magnetic core structure

Publications (1)

Publication Number Publication Date
GB972717A true GB972717A (en) 1964-10-14

Family

ID=22144254

Family Applications (1)

Application Number Title Priority Date Filing Date
GB45601/61A Expired GB972717A (en) 1960-12-27 1961-12-20 Improvements in magnetic cores and methods of making same

Country Status (3)

Country Link
US (1) US3137832A (en)
DE (1) DE1438445A1 (en)
GB (1) GB972717A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4724592A (en) * 1985-04-29 1988-02-16 General Electric Company Method of manufacturing a core and winding assembly
US4646048A (en) * 1985-04-29 1987-02-24 General Electric Company Core and winding assembly with relieved core edges and method of manufacture thereof
DE69505092T2 (en) * 1994-12-06 1999-04-22 Denso Corp Ignition coil for an internal combustion engine
JPH09199349A (en) * 1996-01-19 1997-07-31 Toyo Denso Co Ltd Ignition coil device of engine
JPH09320865A (en) * 1996-05-29 1997-12-12 Aisan Ind Co Ltd Internal-combustion ignition coil
DE19629930A1 (en) * 1996-07-24 1998-02-05 Siemens Ag Core of a transformer with layered sheets, as well as a device and a method for producing the sheets
DE10132716A1 (en) * 2001-07-05 2003-01-16 Abb T & D Tech Ltd Fabricating electrical core sheet assembly with circular cross-section, e.g. for transformer, involves orderly stacking cut core sheets on top of one another in which core sheets are cut from minimum to maximum value and vice versa
DE102015010636A1 (en) * 2015-08-12 2017-02-16 Karlsruher Institut für Technologie Superconductive conductor and use of the superconductive conductor
IT201700022419A1 (en) * 2017-02-28 2018-08-28 L A E Lughese Attrezzature Per L Elettromeccanica S R L LAMELLAR CORE FOR TRANSFORMER, PROCESS AND PLANT FOR THE PRODUCTION OF SUCH CORE
KR102475509B1 (en) * 2017-08-10 2022-12-07 하인리히 게오르그 게엠베하 마쉬넨파브릭 Apparatus and method for manufacturing transformer cores

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1345786A (en) * 1915-10-14 1920-07-06 Gen Electric Art of making cores for electrical apparatus
US2456456A (en) * 1946-01-04 1948-12-14 Shell Dev Oil well pump control system
US2550500A (en) * 1948-09-24 1951-04-24 Gen Electric Low yoke transformer core
US2991437A (en) * 1955-09-20 1961-07-04 Elin Ag Fur Elek Sche Ind Magnetic core

Also Published As

Publication number Publication date
US3137832A (en) 1964-06-16
DE1438445A1 (en) 1968-10-24

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