US20030214198A1 - Method for manufacturing a stator core for a dynamoelectric machine - Google Patents
Method for manufacturing a stator core for a dynamoelectric machine Download PDFInfo
- Publication number
- US20030214198A1 US20030214198A1 US10/430,327 US43032703A US2003214198A1 US 20030214198 A1 US20030214198 A1 US 20030214198A1 US 43032703 A US43032703 A US 43032703A US 2003214198 A1 US2003214198 A1 US 2003214198A1
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- US
- United States
- Prior art keywords
- stator core
- portions
- sheets
- laminated body
- sheet
- 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.)
- Abandoned
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/024—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/024—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots
- H02K15/026—Wound cores
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- 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
- Y10T29/49009—Dynamoelectric machine
-
- 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
- Y10T29/49009—Dynamoelectric machine
- Y10T29/49012—Rotor
-
- 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
- Y10T29/49073—Electromagnet, transformer or inductor by assembling coil and core
-
- 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
-
- 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
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53143—Motor or generator
Definitions
- the present invention relates to a method for manufacturing a stator core for a dynamoelectric machine such as an automotive alternator, for example, and particularly to a method for manufacturing a stator core formed by laminating a press-formed magnetic steel sheet material.
- FIG. 8 is a plan explaining a process for forming a laminated body by a first sheet in a conventional stator for an automotive alternator described in Japanese Patent Laid-Open No. 2001-112197 (Gazette), for example,
- FIG. 9 is a cross section taken along line IX-IX in FIG. 8 viewed from the direction of the arrows
- FIG. 10 is a plan showing a second sheet in the conventional stator for an automotive alternator
- FIG. 11 is a cross section taken along line XI-XI in FIG. 10 viewed from the direction of the arrows
- FIG. 12 is an exploded perspective showing a process for inserting conductor segments into a stator core in the conventional stator for an automotive alternator
- FIG. 13 is a partial cross section explaining a mounted state of a stator winding in the conventional stator for an automotive alternator.
- a conventional stator 1 is constituted by: a cylindrical stator core 2 in which slots 3 are formed at a predetermined pitch in a circumferential direction so as to open onto an inner circumferential side; a stator winding 4 installed in the slots 3 of the stator core 2 ; and insulators 5 mounted inside each of the slots 3 .
- the stator core 2 is provided with: a laminated body 7 constituted by a first sheet 6 ; and second sheets 8 disposed at first and second axial ends of the laminated body 7 .
- the laminated body 7 is formed into a cylindrical shape by winding up the first sheet 6 for a predetermined number of winds into a helical shape, the first sheet 6 being formed by using a press die to punch recess portions 6 a at a predetermined pitch in a strip-shaped magnetic steel sheet material.
- the recess portions 6 a are superposed in an axial direction of the laminated body 7 , constituting first slot portions 3 a.
- the first sheet 6 is laminated with the press punch direction aligned, as shown in FIG. 9, and burrs 6 b extending in the press punch direction remain on each layer of the first sheet 6 on inner wall surfaces of the first slot portions 3 a.
- the second sheets 8 are each formed into an annular shape by using a press die to punch a flat sheet composed of a magnetic steel sheet material having a sheet thickness greater than that of the first sheet 6 .
- second slot portions 3 b corresponding in position to the first slot portions 3 a are simultaneously press-formed.
- chamfered portions 8 a are formed on edge portions of the second slot portions 3 b on a first end side of the second sheets 8 .
- the second sheets 8 are formed so as to be equal in diameter to the laminated body 7 .
- the second sheets 8 are disposed at first and second end surfaces of the laminated body 7 such that the positions of the first slot portions 3 a and the second slot portions 3 b align and the chamfered portions 8 a face away from the laminated body 7 , and the stator core 2 is prepared by applying several strips of laser welding so as to extend in an axial direction from a first end portion to a second end portion on the outer circumferential surfaces thereof. Moreover, the first and second slot portions 3 a and 3 b align in an axial direction, constituting the slots 3 .
- the stator winding 4 is constructed using a plurality of conductor segments 9 by joining together end portions of the conductor segments 9 by a joining method such as welding, etc.
- the conductor segments 9 are each prepared by bending into a U shape a short length of copper wire having an electrically-insulating coating.
- large and small first and second conductor segments 9 a and 9 b form a basic unit and a plurality of these units are used.
- the conductor segments 9 are housed in the slots 3 so as to be surrounded by the insulators 5 such that the insulators 5 are interposed between the conductor segments 9 and inner wall surfaces of the slots 3 . Together with the electrically-insulating coating covering the copper wire of the conductor segments 9 , these insulators 5 ensure electrical insulation between the conductor segments 9 and the stator core 2 .
- the conductor segments 9 and the insulators 5 are inserted into the slots 3 of the stator core 2 in a direction aligned with the press punch direction of the first sheet 6 , in other words, from top to bottom in FIG. 13.
- the stator winding 4 is prepared by bending first end portions of the conductor segments 9 extending outward from the slots 3 of the stator core 2 as indicated by the arrow in FIG. 13 and joining the first end portions to second end portions of conductor segments 9 separated by a predetermined pitch.
- opening edge portions of the slots 3 at the first and second axial end surfaces of the stator core 2 are constituted by the chamfered portions 8 a of the second sheets 8 , damage to the electrically-insulating coating of the conductor segments 9 caused by the burrs 6 b is avoided during insertion of the conductor segments 9 , during bending or joining of the end portions of the conductor segments 9 , and during shaping of coil ends of the stator winding 4 after joining of the conductor segments 9 , thereby improving electrical insulation.
- stator core 2 is prepared, as described above, by preparing the laminated body 7 by winding the strip-shaped first sheet 6 in which the recess portions 6 a (the first slot portions 3 a ) are formed by press-punching into a helical shape for a predetermined number of winds, preparing the thick annular second sheets 8 in which the second slot portions 3 b are formed by press-punching, forming the chamfered portions 8 a on the edge portions of the second slot portions 3 b of the second sheets 8 by chamfering, disposing the faced second sheets 8 at first and second ends of the laminated body 7 , and integrating the laminated body 7 and the second sheets 8 by welding, the following problems arise, preventing cost reductions:
- the annular second sheets 8 are prepared from a flat magnetic steel sheet material by press-punching, the second sheets 8 cannot be prepared from the magnetic steel sheet material efficiently, increasing the amount of magnetic steel sheet material.
- the present invention aims to solve the above problems and an object of the present invention is to provide a method for manufacturing a stator core for a dynamoelectric machine enabling cost reductions to be achieved by preparing a second sheet constituting an end plate in a straight shape by press-punching and preparing an annular end plate by bending the straight second sheet to prepare the end plate from a magnetic steel sheet material efficiently and suppress increases in material quantities, and in addition, by forming an chamfered portion on an edge portion of a recess portion by chamfering the straight second sheet to increase chamfering precision and enable improved yield.
- a method for manufacturing a stator core for a dynamoelectric machine including the step of preparing a cylindrical laminated body by preparing a continuous first sheet in which first recess portions are formed at a predetermined spacing by press-punching from a strip-shaped first magnetic steel sheet material and winding the first sheet into a helical shape such that the first recess portions are superposed in an axial direction. Also, the method includes the step of preparing a second sheet having a predetermined length in which second recess portions are formed at a predetermined spacing by press-punching a second magnetic steel sheet material having a sheet thickness greater than that of the first magnetic steel sheet material.
- the method includes the steps of bending the second sheet into an annular shape, stacking the second sheets bent into the annular shape on both axial ends of the laminated body such that the second recess portions are superposed on the first recess portions in an axial direction, and integrating the laminated body and the second sheets stacked together by applying several strips of welding on an outer circumferential surface of the laminated body and the second sheets so as to extend from a first end to a second end in an axial direction.
- the method enables the second sheet for an end plate to be prepared from the second magnetic sheet material efficiently, thereby enabling cost reduction to be achieved.
- FIG. 1 is a perspective showing a stator for an automotive alternator using a stator core manufactured by a method for manufacturing a stator core according to Embodiment 1 of the present invention
- FIG. 2 is a perspective showing the stator core manufactured by the method for manufacturing a stator core according to Embodiment 1 of the present invention
- FIG. 3 is a cross section taken along line III-III in FIG. 2 viewed from the direction of the arrows;
- FIG. 4 is a perspective explaining the method for manufacturing a stator core according to Embodiment 1 of the present invention.
- FIG. 5 is a perspective explaining the method for manufacturing the stator core manufactured by the method for manufacturing a stator core according to Embodiment 1 of the present invention.
- FIG. 6 is a perspective explaining the method for manufacturing the stator core manufactured by the method for manufacturing a stator core according to Embodiment 1 of the present invention.
- FIG. 7 is a perspective showing a stator core manufactured by a method for manufacturing a stator core according to Embodiment 2 of the present invention.
- FIG. 8 is a plan explaining a process for forming a laminated body by a first sheet in a conventional stator for an automotive alternator
- FIG. 9 is a cross section taken along line IX-IX in FIG. 8 viewed from the direction of the arrows;
- FIG. 10 is a plan showing a second sheet in the conventional stator for an automotive alternator
- FIG. 11 is a cross section taken along line XI-XI in FIG. 10 viewed from the direction of the arrows;
- FIG. 12 is an exploded perspective showing a process for inserting conductor segments into a stator core in the conventional stator for an automotive alternator.
- FIG. 13 is a partial cross section explaining a mounted state of a stator winding in the conventional stator for an automotive alternator.
- FIG. 1 is a perspective showing a stator for an automotive alternator using a stator core manufactured by a method for manufacturing a stator core according to Embodiment 1 of the present invention
- FIG. 2 is a perspective showing the stator core manufactured by the method for manufacturing a stator core according to Embodiment 1 of the present invention
- FIG. 3 is a cross section taken along line III-III in FIG. 2 viewed from the direction of the arrows
- FIGS. 4 to 6 are perspectives explaining the method for manufacturing a stator core according to Embodiment 1 of the present invention.
- a stator 10 is constituted by: a cylindrical stator core 11 in which slots 12 are formed at a predetermined pitch in a circumferential direction so as to open onto an inner circumferential side; and a stator winding 13 installed in the slots 12 of the stator core 11 .
- the stator core 11 is constructed by laminating a pair of end plates 17 composed of a magnetic steel sheet onto first and second axial ends of a laminated body 16 formed by laminating a magnetic steel sheet material and integrating by laser welding, for example.
- the stator winding 13 is prepared by mounting three winding phase portions 15 into groups of the slots 12 so as to be offset by one slot each, each winding phase portion 15 being formed by installing one conductor wire 14 composed of a copper wire coated with an electrical insulator into a wave winding in every third slot 12 .
- Each of the winding phase portions 15 is formed by preparing an annular unit by winding one conductor wire 14 for a predetermined number of winds, preparing a star-shaped unit by shaping the annular unit into a star shape, and mounting the star-shaped unit into the slots 12 of the stator core 11 .
- stator core 11 Next, a method for manufacturing the stator core 11 will be explained.
- a single-strip first sheet 20 in which first recess portions 20 a are formed at a predetermined pitch is prepared by press-forming a hoop material composed of a first magnetic steel sheet material having a thickness of 0.50 mm, for example, using a press die. Then, as shown in FIG. 4, the cylindrical laminated body 16 is prepared by winding the first sheet 20 into a helical shape for a predetermined number of winds. At this time, the first recess portions 20 a are superposed in an axial direction of the laminated body 16 to constitute the slots 16 a.
- Second sheets 21 having a predetermined length in which second recess portions 21 a are formed at a predetermined pitch are each prepared by press-forming a flat plate composed of a second magnetic steel sheet material having a thickness of 1.00 mm, for example, using a press die.
- the length of the second sheets 21 is equivalent to the circumferential length of the stator core 11 .
- these straight second sheets 21 are faced using a press die to form chamfered portions 21 b on edge portions of the second recess portions 21 a on a first surface side of each of the second sheets 21 .
- the second sheets 21 formed with the chamfered portions 21 b are each bent into an annular shape.
- annular end plates 17 are prepared by abutting first and second end surfaces of the second sheets 21 and joining the abutted portions 21 c by tungsten inert-gas (TIG) welding.
- TIG tungsten inert-gas
- the pair of end plates 17 are superposed onto the first and second axial end portions, respectively, of the laminated body 16 such that the chamfered portions 21 b face outward and the second recess portions 21 a are aligned with the slots 16 a.
- the stator core 11 shown in FIG. 2 is prepared by applying several strips of laser welding (weld portions 18 ) on outer circumferential surfaces thereof so as to extend in an axial direction from the first end portion to the second end portion.
- the slots 16 a and the second recess portions 21 a line up in an axial direction to constitute the slots 12 .
- burrs 20 b extending in the press punch direction remain on each layer of the first sheet 20 on inner wall surfaces of the slots 12 of the stator core 11 .
- a powdered form of an electrically-insulating resin such as an epoxy resin, for example, is electrostatically coated onto the stator core 11 , then melted by heating, the electrically-insulating resin being formed so as to cover the entire surface of the stator core 11 .
- opening edge portions of the slots 12 at the first and second end surfaces of the stator core 11 are constituted by the chamfered portions 21 b, and the burrs 20 b formed by press-punching are present only inside the slots 12 .
- damage to the electrically-insulating coating of the conductor wires 14 caused by the burrs 20 b is avoided during mounting of the stator winding 13 and during shaping of coil ends of the stator winding 13 , thereby improving electrical insulation.
- end plates 17 having a thick sheet thickness are disposed on the first and second end portions of the stator core 11 , the rigidity of the stator core 11 is increased.
- the occurrence of deformation and peeling of the first sheet 20 having a thin sheet thickness is prevented during insertion of the stator winding 13 .
- the stator 10 is fixed by being held from first and second axial ends by a frame, the occurrence of warping in outer circumferential portions of the stator core 11 is reliably prevented.
- the sheet thickness of the first sheet 20 constituting the laminated body 16 can be reduced.
- iron loss which is proportional to the square of the sheet thickness of the steel sheets is reduced, enabling increased efficiency to be achieved in the dynamoelectric machine.
- end plates 17 are prepared by joining together the abutted portions 21 c of the second sheets 21 by TIG welding, magnetic flux can be passed through the end plates 17 effectively, enabling output to be stabilized.
- the laminated body 16 constituting the stator core 11 is prepared by winding into a helical shape a single-strip first sheet 20 formed by pressing a hoop material composed of the first magnetic steel sheet material, the first sheet 20 can be prepared from the first magnetic steel sheet material efficiently, enabling the amount of magnetic material used to be reduced, thereby enabling cost reductions.
- the end plates 17 constituting the stator core 11 are prepared by bending into an annular shape second sheets 21 having a predetermined length formed by pressing a flat plate composed of the second magnetic steel sheet material, then TIG welding the first and second end surfaces of the bent second sheets 21 placed in contact with each other, the second sheets 21 can be prepared from the second magnetic steel sheet material efficiently.
- five times as many end plates 17 can be prepared as when the annular end plates are press-formed directly from the second magnetic steel sheet material, significantly reducing the amount of magnetic material used, thereby enabling cost reductions.
- the abutted portions 21 c of the second sheets 21 are joined together, handling of the end plates 17 is facilitated when the end plates 17 are being superposed onto the laminated body 16 , improving manufacture.
- the slot opening portions are narrow, making it hard to perform high-precision chamfering, thereby reducing yield.
- the chamfered portions 21 b are formed on the edge portions of the second recess portions 21 a by chamfering the straight second sheets 21 , the slot opening portions are wide, making high-precision chamfering possible, thereby enabling reliability to be increased.
- the abutted portions 21 c of the second sheets 21 are joined together by TIG welding, but the abutted portions 21 c of the second sheets 12 do not necessarily have to be joined together; the first and second end surfaces of the second sheets 21 constituting the abutted portions 21 c through which magnetic flux flows need only be placed in contact with each other.
- the stator winding 13 is constructed by preparing annular units by winding single conductor wires 14 each composed of a copper wire coated with an electrical insulator for a predetermined number of winds, preparing star-shaped units by shaping the annular units into a star shape, and mounting the star-shaped units into the slots 12 of the stator core 11 , but the stator winding is not limited to this construction and it goes without saying that the stator winding may also be constructed using the conductor segments 9 shown in the conventional technique.
- Embodiment 1 insulators are not mounted to the slots 12 , but it goes without saying that insulators may be mounted to each of the slots 12 .
- abutted portions 21 c of the second sheets 21 constituting the end plates 17 are aligned with one of several strip-shaped weld portions 18 integrating the laminated body 16 and the end plates 17 .
- the abutted portions 21 c are joined together simultaneously when laser welding is applied in order to integrate the laminated body 16 and the end plates 17 .
- a single-strip first sheet 20 in which first recess portions 20 a are formed at a predetermined pitch is prepared by press-forming a hoop material composed of a first magnetic steel sheet material having a thickness of 0.35 mm, for example, using a press die. Then, the cylindrical laminated body 16 is prepared by winding the first sheet 20 into a helical shape for a predetermined number of winds.
- Second sheets 21 having a predetermined length in which second recess portions 21 a are formed at a predetermined pitch are each prepared by press-forming a flat plate composed of a second magnetic steel sheet material having a thickness of 0.80 mm, for example, using a press die. Next, these second sheets 21 are faced using a press die to form chamfered portions 21 b on edge portions of the second recess portions 21 a on a first surface side of each of the second sheets 21 . Then, the second sheets 21 formed with the chamfered portions 21 b are each bent into an annular shape.
- the second sheets 21 which have been bent into an annular shape and in which the first and second end surfaces are abutted are superposed onto the first and second axial end portions, respectively, of the laminated body 16 such that the chamfered portions 21 b face outward and the second recess portions 21 a are aligned with the slots 16 a.
- the stator core 11 A shown in FIG. 7 is prepared by applying several strips of laser welding (weld portions 18 ) on outer circumferential surfaces thereof so as to extend in an axial direction from the first end portion to the second end portion.
- one of the strips of laser welding is applied at the position of the abutted portions 21 c of the second sheets 21 .
- the second sheets 21 are joined together at the abutted portions 21 c to form the end plates 17 .
- a powdered form of an electrically-insulating resin such as an epoxy resin, for example, is electrostatically coated onto the stator core 11 A, then melted by heating, the electrically-insulating resin being formed so as to cover the entire surface of the stator core 11 A.
- Embodiment 2 because the abutted portions 21 c of the second sheets 21 constituting the end plates 17 are joined together simultaneously when laser welding is applied to integrate the laminated body and the end plates, a single welding process is sufficient, thereby simplifying the manufacturing process.
- the abutted portions 21 c may also be welded on the end surfaces on an opposite side from the laminated body 16 during laser welding. In that case, magnetic flux can be passed through the end plates 17 effectively, enabling output to be stabilized.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US11/354,860 US7260880B2 (en) | 2002-05-16 | 2006-02-16 | Method for manufacturing a stator core for a dynamoelectric machine |
US11/354,943 US7260881B2 (en) | 2002-05-16 | 2006-02-16 | Method for manufacturing a stator core for a dynamoelectric machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002141474A JP3871964B2 (ja) | 2002-05-16 | 2002-05-16 | 回転電機の固定子鉄心の製造方法 |
JP2002-141474 | 2002-05-16 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US11/354,860 Division US7260880B2 (en) | 2002-05-16 | 2006-02-16 | Method for manufacturing a stator core for a dynamoelectric machine |
US11/354,943 Division US7260881B2 (en) | 2002-05-16 | 2006-02-16 | Method for manufacturing a stator core for a dynamoelectric machine |
Publications (1)
Publication Number | Publication Date |
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US20030214198A1 true US20030214198A1 (en) | 2003-11-20 |
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Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
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US10/430,327 Abandoned US20030214198A1 (en) | 2002-05-16 | 2003-05-07 | Method for manufacturing a stator core for a dynamoelectric machine |
US11/354,860 Expired - Fee Related US7260880B2 (en) | 2002-05-16 | 2006-02-16 | Method for manufacturing a stator core for a dynamoelectric machine |
US11/354,943 Expired - Lifetime US7260881B2 (en) | 2002-05-16 | 2006-02-16 | Method for manufacturing a stator core for a dynamoelectric machine |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
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US11/354,860 Expired - Fee Related US7260880B2 (en) | 2002-05-16 | 2006-02-16 | Method for manufacturing a stator core for a dynamoelectric machine |
US11/354,943 Expired - Lifetime US7260881B2 (en) | 2002-05-16 | 2006-02-16 | Method for manufacturing a stator core for a dynamoelectric machine |
Country Status (4)
Country | Link |
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US (3) | US20030214198A1 (de) |
JP (1) | JP3871964B2 (de) |
DE (1) | DE10321221B4 (de) |
FR (1) | FR2839826B1 (de) |
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Families Citing this family (17)
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JP4286642B2 (ja) * | 2003-12-01 | 2009-07-01 | 本田技研工業株式会社 | 永久磁石式回転子 |
JP2007312564A (ja) * | 2006-05-22 | 2007-11-29 | Denso Corp | 回転電機の固定子 |
JP2008099473A (ja) * | 2006-10-13 | 2008-04-24 | Mitsubishi Electric Corp | 回転電機 |
JP2008125243A (ja) | 2006-11-13 | 2008-05-29 | Mitsubishi Electric Corp | 回転電機 |
TW200824224A (en) * | 2006-11-17 | 2008-06-01 | Lidashi Industry Co Ltd | A stator structure |
WO2008061312A1 (en) * | 2006-11-22 | 2008-05-29 | Synectic Engineering Pty Limited | A portable welding apparatus and alternator |
JP4447619B2 (ja) * | 2007-03-20 | 2010-04-07 | 株式会社日本自動車部品総合研究所 | 積層鉄心 |
JP4592720B2 (ja) * | 2007-04-04 | 2010-12-08 | 三菱電機株式会社 | シート材の打抜き方法 |
JP5382033B2 (ja) * | 2011-03-01 | 2014-01-08 | 株式会社デンソー | 回転電機の固定子鉄心の製造方法および回転電機の固定子鉄心 |
US10164487B2 (en) * | 2013-01-28 | 2018-12-25 | Asmo Co., Ltd. | Motor, method for manufacturing magnetic plate, and method for manufacturing stator |
JP6244268B2 (ja) * | 2014-06-16 | 2017-12-06 | アスモ株式会社 | 電機子コアの製造方法 |
ITBO20150187A1 (it) * | 2015-04-16 | 2016-10-16 | Magneti Marelli Spa | Metodo di saldatura laser tra due elementi metallici adiacenti di un avvolgimento statorico con barre rigide per una macchina elettrica |
CN105576859A (zh) * | 2016-01-15 | 2016-05-11 | 重庆智仁发电设备有限责任公司 | 发电机冲片 |
JP6617640B2 (ja) * | 2016-04-08 | 2019-12-11 | 株式会社デンソー | 回転電機の固定子鉄心の製造方法 |
EP3998697B1 (de) * | 2019-07-09 | 2023-12-20 | Shanxi Electric Motor Manufacturing Co., Ltd. | Ie5 drehstrom-asynchronmotor auf der basis von aluminiumgussrotoren und statorblechen mit ungleich grossen schlitzen |
DE102019214693A1 (de) * | 2019-09-25 | 2021-03-25 | Robert Bosch Gmbh | Maschinenkomponente, elektrische Maschine und Verfahren zum Herstellen der Maschinenkomponente |
DE102021204304A1 (de) | 2021-04-29 | 2022-11-03 | Valeo Eautomotive Germany Gmbh | Verbesserte Möglichkeit zum Biegen von Leiterstäben einer Statorwicklung |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE102006022281A1 (de) * | 2006-05-11 | 2007-11-15 | Robert Bosch Gmbh | Elektromotor |
EP2284976A4 (de) * | 2008-03-12 | 2015-08-19 | Hitachi Ltd | Statorkern für eine dynamoelektrische maschine und herstellungsverfahren dafür |
US20130328438A1 (en) * | 2011-04-13 | 2013-12-12 | New Motech Co., Ltd. | Stator of motor and method for manufacturing the stator |
US20170070105A1 (en) * | 2011-04-13 | 2017-03-09 | New Motech Co., Ltd. | Motor stator core having l-shaped coupling members |
US20170133890A1 (en) * | 2011-08-17 | 2017-05-11 | New Motech Co., Ltd. | Stator assembly with dual coating layers on stator core thereof |
US20140159520A1 (en) * | 2011-08-17 | 2014-06-12 | New Motech Co., Ltd. | Stator assembly with magmate holder |
US9859759B2 (en) * | 2011-08-17 | 2018-01-02 | New Motech Co., Ltd. | Stator assembly with dual coating layers on stator core thereof |
US9627932B2 (en) * | 2011-08-17 | 2017-04-18 | New Motech Co., Ltd. | Stator assembly with magmate holder |
US20150270755A1 (en) * | 2012-09-27 | 2015-09-24 | Sawafuji Electric Co., Ltd. | Rotor for generator |
US9479022B2 (en) | 2013-09-16 | 2016-10-25 | Nidec Motor Corporation | Stator tooth wire retention wings |
US9614406B2 (en) | 2013-09-16 | 2017-04-04 | Nidec Motor Corporation | Wedge for stator having overmolded insulation |
FR3020198A1 (fr) * | 2014-04-17 | 2015-10-23 | Valeo Equip Electr Moteur | Stator de machine electrique muni de toles de rive et procede de realisation du stator par cambrage correspondant |
US20170098986A1 (en) * | 2014-06-10 | 2017-04-06 | Smz Wickel- Und Montagetechnik Ag | A coil winding system |
US10326323B2 (en) | 2015-12-11 | 2019-06-18 | Whirlpool Corporation | Multi-component rotor for an electric motor of an appliance |
US10897167B2 (en) | 2015-12-11 | 2021-01-19 | Whirlpool Corporation | Multi-component rotor for an electric motor of an appliance |
US11374448B2 (en) | 2015-12-11 | 2022-06-28 | Whirlpool Corporation | Multi-component rotor for an electric motor of an appliance |
US11641138B2 (en) | 2015-12-11 | 2023-05-02 | Whirlpool Corporation | Multi-component rotor for an electric motor of an appliance |
US11909265B2 (en) | 2015-12-11 | 2024-02-20 | Whirlpool Corporation | Multi-component rotor for an electric motor of an appliance |
US10704180B2 (en) | 2016-09-22 | 2020-07-07 | Whirlpool Corporation | Reinforcing cap for a tub rear wall of an appliance |
US11473231B2 (en) | 2016-09-22 | 2022-10-18 | Whirlpool Corporation | Reinforcing cap for a tub rear wall of an appliance |
US10693336B2 (en) | 2017-06-02 | 2020-06-23 | Whirlpool Corporation | Winding configuration electric motor |
US11482901B2 (en) | 2017-06-02 | 2022-10-25 | Whirlpool Corporation | Winding configuration electric motor |
US12031260B2 (en) | 2022-09-09 | 2024-07-09 | Whirlpool Corporation | Reinforcing cap for a tub rear wall of an appliance |
Also Published As
Publication number | Publication date |
---|---|
US20060130314A1 (en) | 2006-06-22 |
JP2003333807A (ja) | 2003-11-21 |
US7260880B2 (en) | 2007-08-28 |
FR2839826B1 (fr) | 2005-07-15 |
US20060130313A1 (en) | 2006-06-22 |
DE10321221B4 (de) | 2013-04-11 |
DE10321221A1 (de) | 2003-12-11 |
JP3871964B2 (ja) | 2007-01-24 |
FR2839826A1 (fr) | 2003-11-21 |
US7260881B2 (en) | 2007-08-28 |
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