EP0196406A1 - Procédé pour la fabrication de tôles de noyau en forme de U - Google Patents

Procédé pour la fabrication de tôles de noyau en forme de U Download PDF

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Publication number
EP0196406A1
EP0196406A1 EP19860100622 EP86100622A EP0196406A1 EP 0196406 A1 EP0196406 A1 EP 0196406A1 EP 19860100622 EP19860100622 EP 19860100622 EP 86100622 A EP86100622 A EP 86100622A EP 0196406 A1 EP0196406 A1 EP 0196406A1
Authority
EP
European Patent Office
Prior art keywords
legs
shaped
shaped core
core sheets
sheets
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
EP19860100622
Other languages
German (de)
English (en)
Other versions
EP0196406B1 (fr
Inventor
Gmbh Co Kg Elektrotech Schwabe
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.)
Vossloh Schwabe Deutschland GmbH
Original Assignee
Vossloh Schwabe GmbH
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 Vossloh Schwabe GmbH filed Critical Vossloh Schwabe GmbH
Priority to AT86100622T priority Critical patent/ATE41555T1/de
Publication of EP0196406A1 publication Critical patent/EP0196406A1/fr
Application granted granted Critical
Publication of EP0196406B1 publication Critical patent/EP0196406B1/fr
Expired legal-status Critical Current

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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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49075—Electromagnet, transformer or inductor including permanent magnet or core
    • Y10T29/49078—Laminated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49789—Obtaining plural product pieces from unitary workpiece
    • Y10T29/49794—Dividing on common outline
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0491—Cutting of interdigitating products

Definitions

  • the invention relates to a method for producing U-shaped core sheets and between their legs matching T-shaped yoke sheets of a choke or a transformer, in particular for use as a series choke.
  • recesses possibly being formed on the outer legs of the U-shaped core sheets the two mutually offset rows of U-shaped core sheets are punched out with the open sides opposite one another and with the outer legs in pairs, so that one pair of outer legs of the one row connects laterally to one pair of outer legs of the other row and from between the end faces of the outer leg pairs and the free spaces resulting from these spaced-apart middle legs of the U-shaped core sheets, the T-shaped backing sheets are punched out with transverse legs adjoining the middle legs of the U-shaped core sheets en.
  • T-shaped return plates As ballasts for gas discharge lamps, chokes or transformers with U-shaped core plates and with their transverse legs inserted between their outer legs, T-shaped return plates are known (AT-PS 29 42 70). They have the advantage that the U-shaped core sheets enclosing the T-shaped return plate result in a mechanically stable structure, the parts of which on the abutting leg regions can be secured by interlocking interlocking locking devices and / or can be pressed against one another with pretensioning, as a result of which the required freedom from hum can be guaranteed with relatively simple means.
  • the basic disadvantage of this U / T punch cut of the core sheets is that there is a considerable amount of punching waste during punching. Various processes for the production of such core sheets have therefore already been specified, which serve the purpose of reducing the punching waste. However, other more or less major disadvantages all had to be accepted.
  • FR-PS 2070 783 a method has become known (FR-PS 2070 783) from which the invention is based and which permits the waste-free punching of U-shaped core sheets and T-shaped yoke sheets in one tool.
  • the T-shaped backing plates are punched out of the free spaces laterally delimited by the outer legs of the U-shaped backing plates in such a way that the outer legs of a U-shaped core plate each laterally delimit a T-shaped backing plate lying between them with its cross leg.
  • This yoke plate is in turn punched out of the two outer legs of two opposite U-shaped core sheets protruding between the outer legs of a U-shaped core sheet, with the result that corresponding recesses are necessarily formed on these outer legs of the middle leg of the T-shaped yoke sheet.
  • the magnetic flux available material cross-section of the outer legs of the U-shaped core sheets reduced.
  • the width and the length of the middle legs of the T-shaped yoke plates are therefore limited.
  • no triangular cross-sectional recesses can be provided on the outside of the outer legs of the U-shaped core sheets, as are required for clamping an approximately U-shaped clamping rail, which ensures the necessary pretension at the cutting planes of the abutting core parts of the throttle.
  • the object of the invention is therefore to provide a method for punch-free production of U-shaped core sheets and matching T-shaped backing sheets between the legs, which can be carried out with a punching tool and no restrictions with regard to the electromagnetic conditions of the choke or the transformer approximately in this means that undesirable reductions in cross-section of the magnetic path or compromises with regard to the length or the dimensions of the magnetically active core parts must be accepted.
  • T-shaped yoke plates with their longitudinal leg on one side on an outer leg pair of the opposite row of U-shaped core sheets and on the other side on the longitudinal leg of an adjacent opposite T-shaped yoke plate are punched out laterally.
  • profiled recesses which, for example, have an essentially triangular cross-sectional shape, can be punched out to accommodate a clamping rail that clasps the outer legs. This affects the cross-section of other core sheet metal parts Recesses not conditional; the shape of the recesses can be chosen appropriately for any purpose.
  • the cross legs of the T-shaped yoke plates are punched out with a length which is somewhat greater than the distance between the parallel inner sides of the U-shaped core plates. In this way, when installing the throttle when inserting the T-shaped yoke part, the outer legs of the U-shaped core part are pressed slightly outwards, with the result that the whole structure is pre-stressed and a higher stability can thus be achieved.
  • the arrangement can be made for this purpose in such a way that the T-shaped yoke plates are each formed on the end faces of their transverse legs with stamped extensions, the end face distance of which is somewhat larger than the distance between the parallel inner sides of the outer legs of the U-shaped core sheets and their Height is smaller than the height of the cross legs corresponding in their length otherwise at a distance from the inner sides of the outer legs.
  • the transverse legs of the T-shaped yoke plates can also be punched out on the end faces at an angle to the center leg, so that when the T-shaped yoke part is pressed into the U-shaped core part, a pretension can also be generated at the connection points.
  • the jacket core of a choke or a transformer shown in FIG. 1 is layered from U-shaped core sheets 1 and T-shaped yoke sheets 2.
  • Each U-shaped core sheet 1 has two parallel, straight-sided outer legs 3 and a central leg 4 which extends at right angles and connects the two outer legs 3 to one another.
  • the T-shaped yoke plates 2 are pressed with their transverse leg 5, from which a longitudinal leg 6 extends at right angles.
  • An air gap 7, which may contain a deformable air gap insert, can be formed on the end face of the longitudinal legs 6.
  • the U-shaped core sheets 1 and the T-shaped yoke sheets 2 are punched out of a sheet metal strip of width 8 in the manner shown in FIG. 2 by a follow-on tool.
  • the arrangement is such that two rows of 9, 10 U-shaped core sheets 1 face each other with their open sides and interlock with outer legs 3, which adjoin each other in pairs.
  • the adjoining U-shaped core sheets 1 of the two rows 9, 10 are offset from one another in the longitudinal direction of the tape to such an extent that an outer pair of legs 3.3 of the one row laterally adjoins the inside of an outer leg pair 3.3 of the U-shaped core sheets 1 of the other row.
  • All U-shaped core sheets 1 and all T- shaped yoke plates 2 have the same size and the same dimensions.
  • the T-shaped yoke plates 2 are punched out of the free spaces which arise between the end faces 11 of the outer leg pairs 3, 3 and the middle legs 4 of the U-shaped core sheets 1 which are at a distance from them.
  • the T-shaped yoke plates 2 connect with their transverse legs 5 to the middle legs 4 of the U-shaped core plates, the length of a transverse leg 5 corresponding to the distance between the parallel inner sides of the outer legs 3 of a U-shaped core plate 1.
  • the T-shaped yoke plates 2 close with their longitudinal leg 6 on one side to an outer leg pair 3.3 of the opposite row of U-shaped core sheets 1 and on the other side to the longitudinal leg 6 of an adjacent, opposite T-shaped yoke plate 2 laterally at.
  • the punching lines shown in FIG. 2 between the individual U-shaped core sheets 1 and the T-shaped backing sheets 2 show that all sheets are punched out of the sheet metal strip in the longitudinal direction without waste.
  • the outer legs 3 of the U-shaped core sheets 1 can be chosen as wide as the height of the UT plates 1, 2, ie the Eau cramp can be adapted to the respective requirements by appropriate choice of the bandwidth without any restrictions.
  • the arrangement according to FIG. 3 corresponds essentially to that according to FIG. 2.
  • Only on the outer legs 3 of the U-shaped core sheets 1 are externally profiled recesses 12 punched out, which are used to attach a U-shaped clamping rail that compresses the outer legs 3 in the finished throttle serve.
  • the longitudinal legs 6 of the T-shaped yoke plates 2 are shortened at 13 by a waste web which remains in between, with which throttles with an air gap 7 according to FIG. 1 can be produced.
  • the T-shaped yoke plates 2 In order to be able to press in the T-shaped yoke plates 2 with preload between the outer legs 3 of the U-shaped core plates 1, these can easily be punched out with a somewhat greater length than the distance between the inner sides of the outer legs 3 of a U-shaped one Core sheet 1 corresponds.
  • the cross leg 5 of the T-shaped yoke sheets 2 can also have a small, to the middle leg 6 beveling 15 (FIG.
  • the strip-shaped punching pattern shown in FIG. 2 can correspond directly to the width of the sheet metal strip from which it is punched out.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Coating With Molten Metal (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Manufacture Of Iron (AREA)
  • Insulating Of Coils (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
EP19860100622 1985-03-26 1986-01-18 Procédé pour la fabrication de tôles de noyau en forme de U Expired EP0196406B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86100622T ATE41555T1 (de) 1985-03-26 1986-01-18 Verfahren zur herstellung u-foermiger kernbleche.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853510854 DE3510854A1 (de) 1985-03-26 1985-03-26 Verfahren zur herstellung u-foermiger kernbleche und zwischen deren schenkel passender t-foermiger rueckschlussbleche einer drossel oder eines transformators, insbesondere fuer gasentladungslampen
DE3510854 1985-03-26

Publications (2)

Publication Number Publication Date
EP0196406A1 true EP0196406A1 (fr) 1986-10-08
EP0196406B1 EP0196406B1 (fr) 1989-03-15

Family

ID=6266322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860100622 Expired EP0196406B1 (fr) 1985-03-26 1986-01-18 Procédé pour la fabrication de tôles de noyau en forme de U

Country Status (15)

Country Link
US (1) US4711019A (fr)
EP (1) EP0196406B1 (fr)
CN (1) CN86102094A (fr)
AT (1) ATE41555T1 (fr)
AU (1) AU585960B2 (fr)
BG (1) BG60613B2 (fr)
DD (1) DD244231A5 (fr)
DE (2) DE3510854A1 (fr)
FI (1) FI80965C (fr)
GR (1) GR860166B (fr)
HU (1) HU193402B (fr)
PL (1) PL148377B1 (fr)
SU (1) SU1450764A3 (fr)
UA (1) UA7588A1 (fr)
YU (1) YU46521B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0671750A1 (fr) * 1994-03-08 1995-09-13 TRANCERIA LIGURE S.r.l. Procédé de fabrication de noyaux pour transformateurs
EP1852892A4 (fr) * 2004-12-22 2009-01-07 Jin Li Generateur d'energie magnetique et lampe a energie magnetique combines de type traversant
EP2927918A3 (fr) * 2014-04-03 2015-10-21 SUMIDA Components & Modules GmbH Inductance et noyau inducteur

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4897916A (en) * 1988-08-29 1990-02-06 Coils, Inc. Method for making a tranformer core assembly
JPH0289304A (ja) * 1988-09-27 1990-03-29 Kitamura Kiden Kk 巻鉄心用帯材の切抜方法
US5188305A (en) * 1988-09-27 1993-02-23 Kitamura Kiden Co., Ltd. Apparatus for cutting winding strips for use in a wound core
US5373625A (en) * 1991-10-15 1994-12-20 Rohm Co., Ltd. Method for making thermal heads
DE4139003A1 (de) * 1991-11-27 1993-06-03 May & Christe Gmbh Magnetkern in mantelbauweise einer drossel oder eines transformators, geschichtet aus c- und i-foermigen kernblechen
JP2901413B2 (ja) * 1992-04-22 1999-06-07 北村機電株式会社 巻鉄心用帯材の切り抜き装置
ES2110357B1 (es) * 1995-05-05 1998-10-01 Luminotecnicas Especial Procedimiento de fabricacion de nucleos magneticos para reactancias y transformadores.
IT1286752B1 (it) * 1996-11-08 1998-07-17 Omnitex Srl Procedimento di taglio di un materasso di strati di tessuto per agevolare il prelievo di pacchetti di pezzi tagliati e macchina per
ES2157832B1 (es) * 1999-09-24 2002-02-16 Ventura Ind Procedimiento para el troquelado de chapas constitutivas de nucleos magneticos.
ES2155806B1 (es) * 1999-10-07 2001-10-16 Ventura Ind Procedimiento de troquelado de chapas constitutivas de nucleos magneticos en forma de "e" y de "t".
US6975049B2 (en) * 2003-10-29 2005-12-13 A. O. Smith Corporation Electrical machine and method of manufacturing the same
TW200618003A (en) * 2004-11-26 2006-06-01 Mu-Tu Li Electric device, and its labor and materials
CN100447939C (zh) * 2004-12-22 2008-12-31 李进 外包组合式磁能发生器及其磁能灯
US7646281B2 (en) * 2005-01-14 2010-01-12 Lincoln Global, Inc. Snap-together choke and transformer assembly for an electric arc welder
CN101284294B (zh) * 2007-04-10 2010-04-21 上海电气集团上海电机厂有限公司 一种硅钢片冲压模具刃块的加工工艺
JP5271407B2 (ja) * 2008-04-01 2013-08-21 エン，シアン コー 多重コイル蛍光灯バラスト
WO2017111249A1 (fr) * 2015-12-22 2017-06-29 주식회사 포스코티엠씨 Appareil de fabrication de noyau laminé adhésif
CN105798103B (zh) * 2016-05-09 2019-02-01 顺德工业(江苏)有限公司 一种电磁阀式间歇剪断装置
CN108766756B (zh) * 2018-08-02 2024-03-29 青岛云路先进材料技术股份有限公司 铁芯的卷绕芯模

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2070783A1 (fr) * 1969-12-09 1971-09-17 Zumtobel Walter
DE2638780A1 (de) * 1975-09-03 1977-03-17 Leuenberger H Mantelfoermiger magnetkern fuer einen transformator oder eine induktionsspule
DE2745701A1 (de) * 1976-10-11 1978-04-13 Helvar Oy Eisenkern fuer eine drossel oder einen wandler und verfahren zu dessen herstellung
DE2652171A1 (de) * 1976-11-16 1978-05-24 Bertos Ag Vorschaltgeraet u.dgl. mit e- und i-foermigen kernblechen
DE2836401C2 (de) * 1978-08-19 1983-09-08 Fa. Hermann Schwabe, 7067 Urbach Streufeldtransformator oder Drossel, insbesondere als Vorschaltgerät für Gasentladungslampen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3201731A (en) * 1962-11-27 1965-08-17 Electro Netic Steel Inc Transformer core and lamination therefor
US3181402A (en) * 1963-04-03 1965-05-04 David J Kuck Method of forming f-shaped and l-shaped laminations for shell-type core
US3456535A (en) * 1966-07-18 1969-07-22 Allegheny Ludlum Steel Laminations without scrap
US3491437A (en) * 1968-05-06 1970-01-27 Allegheny Ludlum Steel Scrapless method of stamping e laminations
AT294270B (de) * 1969-07-14 1971-11-10 Berndeisel & Co Johann Drossel für Entladungslampen, insbesondere Leuchtstofflampen
AT304692B (de) * 1969-12-29 1973-01-25 Zumtobel Walter Eisenpaket oder Kern, vorzugsweise aus geschichteten Lamellen
AT304690B (de) * 1970-02-05 1973-01-25 Zumtobel Walter Transformator oder Induktionsspule
DE2309727C3 (de) * 1973-02-27 1979-05-03 Fa. Hermann Schwabe, 7067 Urbach Verfahren zur Herstellung von insbesondere als Vorschaltgerät für Gasentladungslampen zu verwendende Drosseln oder Transformatoren

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2070783A1 (fr) * 1969-12-09 1971-09-17 Zumtobel Walter
DE2638780A1 (de) * 1975-09-03 1977-03-17 Leuenberger H Mantelfoermiger magnetkern fuer einen transformator oder eine induktionsspule
DE2745701A1 (de) * 1976-10-11 1978-04-13 Helvar Oy Eisenkern fuer eine drossel oder einen wandler und verfahren zu dessen herstellung
DE2652171A1 (de) * 1976-11-16 1978-05-24 Bertos Ag Vorschaltgeraet u.dgl. mit e- und i-foermigen kernblechen
DE2836401C2 (de) * 1978-08-19 1983-09-08 Fa. Hermann Schwabe, 7067 Urbach Streufeldtransformator oder Drossel, insbesondere als Vorschaltgerät für Gasentladungslampen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0671750A1 (fr) * 1994-03-08 1995-09-13 TRANCERIA LIGURE S.r.l. Procédé de fabrication de noyaux pour transformateurs
EP1852892A4 (fr) * 2004-12-22 2009-01-07 Jin Li Generateur d'energie magnetique et lampe a energie magnetique combines de type traversant
EP2927918A3 (fr) * 2014-04-03 2015-10-21 SUMIDA Components & Modules GmbH Inductance et noyau inducteur

Also Published As

Publication number Publication date
AU5522086A (en) 1986-10-02
HUT40855A (en) 1987-02-27
GR860166B (en) 1986-05-13
AU585960B2 (en) 1989-06-29
FI860805A7 (fi) 1986-09-27
DE3510854A1 (de) 1986-10-02
FI80965C (fi) 1990-08-10
UA7588A1 (uk) 1995-09-29
DE3662477D1 (en) 1989-04-20
CN86102094A (zh) 1986-09-24
DD244231A5 (de) 1987-03-25
ATE41555T1 (de) 1989-04-15
FI80965B (fi) 1990-04-30
PL148377B1 (en) 1989-10-31
US4711019A (en) 1987-12-08
BG60613B2 (en) 1995-10-31
SU1450764A3 (ru) 1989-01-07
HU193402B (en) 1987-10-28
YU43486A (en) 1988-02-29
FI860805A0 (fi) 1986-02-25
EP0196406B1 (fr) 1989-03-15
YU46521B (sh) 1993-11-16

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