EP0196406B1 - 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 PDFInfo
- Publication number
- EP0196406B1 EP0196406B1 EP19860100622 EP86100622A EP0196406B1 EP 0196406 B1 EP0196406 B1 EP 0196406B1 EP 19860100622 EP19860100622 EP 19860100622 EP 86100622 A EP86100622 A EP 86100622A EP 0196406 B1 EP0196406 B1 EP 0196406B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaped
- shaped core
- legs
- arms
- laminations
- 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
Links
Images
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 for gas discharge lamps, recesses being formed on the outer legs of the U-shaped core sheets, in which case 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 is laterally connected to an outer leg pair of the other row and from between the end faces of the outer leg pairs and the T-shaped yoke plates are punched out with the transverse spaces that are located at a distance from the center of the U-shaped core sheets, with transverse legs adjoining the center legs of the U-shaped core sheets en and starts from FR-A-2 070 783.
- T-shaped return plates As ballasts for gas discharge lamps, chokes or transformers with U-shaped core sheets and with their transverse legs inserted between their outer legs, T-shaped return plates are known (AT-A-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.
- the T-shaped back plate was already split into two L-shaped partial plates, which can be punched out together with the U-shaped core plates without waste (DE-A-26 38 780). This means that three separate core parts have to be handled when installing the throttle, which is complex and undesirable. The mechanical stability of the entire core is also impaired.
- the object of the invention is therefore to provide a method for punch-free production of U-shaped core sheets and between their legs matching T-shaped backing sheets, which can be carried out with a punching tool and no restrictions with regard to the electromagnetic conditions of the choke or the transformer about 1 of 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.
- the method mentioned in the introduction is carried out according to the invention in such a way that the T-shaped yoke plates with their longitudinal legs on the one side on an outer leg pair of the respective 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.
- the width / height ratio of the legs of the sheets can also be freely selected in accordance with the respective electromagnetic design of the throttle. Both flat and high throttle designs can be easily produced. Furthermore, there is the possibility of punching the plates for chokes without waste, which have a defined air gap in their magnetic path, which lies between the longitudinal leg of the T-shaped return plates and the opposite central leg of the U-shaped core plates. Cores with little stray field and reinforced outer legs can equally well be produced without waste, while in addition there are no cross-sectional weakenings in particular on individual core legs, in particular due to manufacturing.
- 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. Impairment of the cross section of other core sheet metal parts is not caused by these recesses; the shape of the recesses can be chosen appropriately for any purpose.
- the transverse 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 transverse legs, which otherwise correspond in length to the distance between 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 cross leg 5, from which a longitudinal leg 6 extends at a right angle.
- 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 9, 10 of U-shaped core sheets 1 face each other with their open sides and interlock with outer legs 3 which are connected to one another 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 one row is laterally connected laterally to an outer pair of legs 3, 3 of the U-shaped core sheets 1 of the other row.
- All U-shaped core sheets 1 and all T-shaped backing sheets 2 have the same size and the same size boy.
- the T-shaped yoke plates 2 are punched out of the free spaces formed 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 with their cross legs 5 connect to the middle legs 4 of the U-shaped core sheets, the length of a cross leg 5 the Distance between the parallel inner sides of the outer legs 3 of a U-shaped core sheet 1 corresponds.
- 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 U-T sheets 1, 2, d. H. the Eau cramp can be adapted to the respective requirements by choosing the appropriate 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.
- T-shaped yoke plates 2 To the T-shaped yoke plates 2 with. To be able to press in prestress between the outer legs 3 of the U-shaped core sheets 1, these can easily be punched out with a somewhat greater length than this corresponds to the distance between the inner sides of the outer legs 3 of a U-shaped core sheet 1. For this purpose, it may be expedient to punch small rectangular extensions 14 on the end of the transverse legs 5, which have a length of approximately 2 / 100-3 / 100 mm and whose height is smaller than the height of the length of the distance between the inner sides the outer leg 3 of a U-shaped core sheet 1 corresponding cross leg 5. In addition, the cross legs 5 of the T-shaped yoke plates 2 can also be punched on the end face with a small slope 15 (FIG.
- the maximum length of the cross legs 5 which is somewhat greater, ensures that the cross legs 5 are pressed in under tension between the outer legs 3.
- the difference between the maximum and the minimum length on the outer or inner edge of a cross leg is on the order of 2 / 100-3 / 100 mm on each end face.
- 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. For economic reasons, however, it can also be expedient to arrange a plurality of such strip-shaped die-cut patterns next to one another on a sheet-metal strip width. H. to be stamped out without waste from correspondingly wider sheet metal strips.
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)
- Manufacture Of Iron (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Coils Or Transformers For Communication (AREA)
- Insulating Of Coils (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Claims (5)
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 EP0196406A1 (fr) | 1986-10-08 |
EP0196406B1 true 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 (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Families Citing this family (20)
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 |
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 |
ITGE940022A1 (it) * | 1994-03-08 | 1995-09-08 | Tranceria Ligure S R L | Metodo rapido,economico e senza sfrido di preparazione di nuclei di trasformatori. |
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 |
CN100435267C (zh) * | 2004-12-22 | 2008-11-19 | 李进 | 内穿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 |
WO2009123433A1 (fr) * | 2008-04-01 | 2009-10-08 | Siang Koh Eng | Ballast de lampe fluorescente à bobines multiples |
DE102014206469A1 (de) | 2014-04-03 | 2015-10-08 | SUMIDA Components & Modules GmbH | Drossel und drosselkern |
CN108430774B (zh) * | 2015-12-22 | 2020-08-21 | 株式会社Posco大宇 | 粘合式层叠芯制造装置 |
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 |
Family Cites Families (13)
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 |
AT311485B (de) * | 1969-12-09 | 1973-11-26 | Zumtobel Walter | Transformator oder Induktionsspule mit Eisenkern |
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 |
DE2638780A1 (de) * | 1975-09-03 | 1977-03-17 | Leuenberger H | Mantelfoermiger magnetkern fuer einen transformator oder eine induktionsspule |
FI57192C (fi) * | 1976-10-11 | 1980-06-10 | Helvar Oy | Jaernkaerna foer drosselanordning eller transformator |
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 |
-
1985
- 1985-03-26 DE DE19853510854 patent/DE3510854A1/de not_active Withdrawn
-
1986
- 1986-01-18 AT AT86100622T patent/ATE41555T1/de not_active IP Right Cessation
- 1986-01-18 EP EP19860100622 patent/EP0196406B1/fr not_active Expired
- 1986-01-18 DE DE8686100622T patent/DE3662477D1/de not_active Expired
- 1986-01-21 GR GR860166A patent/GR860166B/el not_active IP Right Cessation
- 1986-02-14 UA UA4019573A patent/UA7588A1/uk unknown
- 1986-02-14 SU SU864019573A patent/SU1450764A3/ru active
- 1986-02-25 FI FI860805A patent/FI80965C/fi not_active IP Right Cessation
- 1986-03-18 US US06/840,919 patent/US4711019A/en not_active Expired - Lifetime
- 1986-03-19 PL PL1986258490A patent/PL148377B1/pl unknown
- 1986-03-19 YU YU43486A patent/YU46521B/sh unknown
- 1986-03-19 BG BG74147A patent/BG60613B2/xx unknown
- 1986-03-24 DD DD86288239A patent/DD244231A5/de unknown
- 1986-03-25 AU AU55220/86A patent/AU585960B2/en not_active Expired
- 1986-03-26 CN CN198686102094A patent/CN86102094A/zh active Pending
- 1986-03-26 HU HU861281A patent/HU193402B/hu unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Also Published As
Publication number | Publication date |
---|---|
SU1450764A3 (ru) | 1989-01-07 |
DE3662477D1 (en) | 1989-04-20 |
PL148377B1 (en) | 1989-10-31 |
YU46521B (sh) | 1993-11-16 |
FI80965C (fi) | 1990-08-10 |
HU193402B (en) | 1987-10-28 |
ATE41555T1 (de) | 1989-04-15 |
BG60613B2 (en) | 1995-10-31 |
FI860805A (fi) | 1986-09-27 |
AU585960B2 (en) | 1989-06-29 |
GR860166B (en) | 1986-05-13 |
DE3510854A1 (de) | 1986-10-02 |
US4711019A (en) | 1987-12-08 |
UA7588A1 (uk) | 1995-09-29 |
CN86102094A (zh) | 1986-09-24 |
AU5522086A (en) | 1986-10-02 |
DD244231A5 (de) | 1987-03-25 |
FI860805A0 (fi) | 1986-02-25 |
FI80965B (fi) | 1990-04-30 |
EP0196406A1 (fr) | 1986-10-08 |
YU43486A (en) | 1988-02-29 |
HUT40855A (en) | 1987-02-27 |
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