WO2005072901A1 - 発電機用アウタロータと他部材との溶接方法 - Google Patents
発電機用アウタロータと他部材との溶接方法 Download PDFInfo
- Publication number
- WO2005072901A1 WO2005072901A1 PCT/JP2005/001191 JP2005001191W WO2005072901A1 WO 2005072901 A1 WO2005072901 A1 WO 2005072901A1 JP 2005001191 W JP2005001191 W JP 2005001191W WO 2005072901 A1 WO2005072901 A1 WO 2005072901A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- welding
- clutch
- magnetic shield
- permanent magnets
- Prior art date
Links
Classifications
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2786—Outer rotors
- H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2791—Surface mounted magnets; Inset magnets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
-
- 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
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
Definitions
- the present invention relates to a method for welding a generator rotor to another member, wherein another member is welded to an inside of an alternator having a plurality of permanent magnets arranged in an annular shape on an inner peripheral surface of the generator. About.
- Patent Document 1 Japanese Patent Publication No. 6-65899
- the present inventor tried to fix other members by welding to the side wall of the rotor of the power generator to reduce the manufacturing cost. Many welding defects occurred. As a cause of the poor welding, the inventor draws a beam or an arc emitted from the welding torch to the permanent magnet side under the influence of the magnetic flux of the permanent magnet disposed on the inner peripheral surface of the outer rotor. It was found that the irradiation position of the beam or arc on the workpiece was out of order.
- the present invention provides a generator rotor port that enables reliable welding of other members to the inside of the rotor rotor without being affected by the magnetic flux of the permanent magnet on the inner peripheral surface of the rotor rotor. It is an object of the present invention to provide a method for welding a member to another member.
- the present invention relates to a method of welding a generator to an outer rotor having a plurality of permanent magnets arranged in an annular shape on an inner peripheral surface thereof and welding other members inside the rotor.
- a first feature is that a magnetic shield member for preventing passage of magnetic flux of the permanent magnet is arranged between the permanent magnet and a welded portion of the rotor and other members.
- the other member corresponds to a clutch eater 9 in an embodiment of the present invention described later.
- the magnetic shield member is constituted by a magnetic shield ring arranged along the inner peripheral surface of the permanent magnet group so as to surround the welded portion. Is the second feature.
- the magnetic shield member is a magnetic shield cylinder mounted on a welding torch used for the welding so as to surround a beam or arc generating portion thereof.
- the configuration is a third feature.
- the magnetic flux of the permanent magnet on the inner peripheral surface of the outer rotor is cut off from the welding torch during welding because the magnetic shield member blocks the influence on the welded portion. It is possible to prevent the irradiated beam or arc from being attracted to the permanent magnet side, thereby preventing the irradiation position on the work from being deviated, thereby reliably welding the autter rotor and other members, and effectively preventing the occurrence of poor welding. Can be prevented.
- FIG. 1 is a longitudinal sectional view of an essential part of an engine provided with a clutch coater and an coater rotor to which a welding method of the present invention is applied. (Example 1)
- FIG. 2 is an explanatory view of a method for welding a clutch coater and an coater rotor according to a first embodiment of the present invention. (Example 1)
- FIG. 3 is a diagram corresponding to FIG. 2, showing a second embodiment of the present invention. (Example 2)
- FIG. 4 is a view corresponding to FIG. 1, showing a modification of the welded joint structure of the clutch rotor and the rotor rotor. (Example 2)
- Magnetic shield member (magnetic shield ring)
- Magnetic shield member (magnetic shield cylinder)
- reference symbol E denotes an engine mounted on a motorcycle or an automobile.
- One end of a crankshaft 2 supported by a crankcase 1 has a driving power of a starting motor (not shown).
- a one-way clutch 3 for transmitting power to the crankshaft 2 and an outer rotor 5 of a generator 4 driven by the crankshaft 2 are mounted.
- the one-way clutch 3 includes a clutch inner 8 which is supported on the outer periphery of the crankshaft 2 through a needle bearing 7 in a relative rotation manner, and a concentrically arranged surrounding the clutch inner 8 so as to surround the crankshaft. And a plurality of roller plugs, etc., which are interposed between the clutch inner 9 and the clutch inner 8 and the clutch outer 9 to enable transmission in only one direction from the clutch inner 8 to the clutch outer 9.
- a starting gear 12 is formed at one end of the clutch inner 8 and is driven at a reduced speed by a pinion (not shown) connected to an output shaft of the starting motor. You. At this time, the clutch inner 8 and the starting gear 12 are integrally formed by forging.
- the clutch outer 9 is formed integrally with an annular portion 9a surrounding the clutch inner 8 and one end of the annular portion 9a opposite to the starting gear 12 and extends inward in the radial direction. And a side wall 9b covering one end surface of the one-way transmission pieces 10, 10,... Formed integrally with the inner peripheral end of the side wall 9b in the direction opposite to the starting gear 12 along the axial direction of the crankshaft 2.
- the clutch hopper 9 is also integrally formed by forging.
- a retainer 11 for suppressing the lateral movement of the one-way transmission pieces 10, 10,... In cooperation with the side wall part 9b is fixed to the annular part 9a by caulking.
- the boss 9c is taperedly fitted to the crankshaft 2 and connected via a key 13.
- the tapered fitting portion is further tightened by a nut 14 or a bolt screwed to the crankshaft 2. It is.
- the generator 4 is concentrically coupled to the clutch outer 9 and surrounds the boss 9c.
- the generator outlet 5 is positioned on one side of the crankcase 1 and is positioned on the inner wall of a side cover 15 which is bolted and joined.
- the stator 16 is fixed and concentrically arranged in the rotor 5.
- the outer rotor 5 is fixed to a cylindrical portion 5a surrounding the stator 16, a side wall portion 5b bent radially inward from one end of the cylindrical portion 5a, and an inner peripheral surface of the cylindrical portion 5a. It is composed of a plurality of annularly arranged permanent magnets 5c, 5c, and the cylindrical portion 5a and the side wall portion 5b are integrally press-formed from a steel plate.
- the stator 16 has a stator core 16a fixed to the inner wall of the side cover 15 with bolts 18, and a plurality of stator coils 16b wound around a plurality of poles on the outer periphery of the stator core 16a.
- a fixed gap is provided between the facing peripheral surfaces of the outer rotor 5 and the stator 16.
- an annular concave portion 20 which is recessed from the outer surface of the side wall portion 9 b is formed on the outer peripheral portion of the side wall portion 9 b, and the concave portion 20 has a depth of the side wall portion of the outer rotor 5.
- the thickness is substantially the same as the plate thickness of 5b, and the size fits within the lateral projection surface 21 of the radial minimum thickness portion 9aa of the annular portion 9a of the clutch outer 9.
- the recess 20 is formed at the time of forging the clutch coater 9 or formed by cutting after forging.
- the side wall 9b of the outer port 5 is fitted into the recess 20 and is preferably press-fitted.
- the surfaces of the side walls 5b, 9b of the clutch rotor 9 and the rotor 5 facing the inside of the rotor 5 are substantially flush with each other, and the mating boundary of the side walls 5b, 9b is butt-welded over the entire circumference. 22.
- the clutch rotor 9 and the rotor rotor 5 are integrated with each other.
- the entire clutch rotor 9 is integrally formed by forging from the annular portion 9a surrounding the clutch inner 8 to the boss 9c which is keyed to the crankshaft 2, and the portion between the annular portion 9a and the boss 9c is formed.
- the inner peripheral end of the rotor rotor 5 is fitted into the concave portion 20 provided on the outer peripheral portion of the side wall 9b, and the welded portion 22 is welded to the fitting portion.
- the clutch rotor 9 and the rotor rotor 5 can be integrated while reducing man-hours compared to the required conventional one, which can contribute to cost reduction.
- the concentric accuracy of the clutch rotor 9 and the rotor rotor 5 in the recess 20 can be improved by fitting the two in the recess 20, so that the boss 9c of the clutch rotor 9 is fixed to the crankshaft 2 and the stator 16 is fixed.
- the concentric error between the outer rotor 5 and the stator 16 can be reduced, so that the gap between the opposing peripheral surfaces of the outer rotor 5 and the stator 16 can be reduced.
- the power generation efficiency of the generator 4 can be improved by narrowing the width.
- the concave portion 20 is disposed in the side projection surface 21 of the radial minimum thickness portion 9aa of the annular portion 9a of the clutch outer 9, the total thickness along the axial direction of the annular portion 9a and the side wall portion 9b is provided.
- the thicker portion is lightened by the amount of the recess 20. Therefore, the weight of the clutch outer 9 does not reduce the thickness of the single portion of the side wall 9b, that is, does not impair the strength of the side wall 9b. It is possible to make a dagger.
- a plasma welding method or a TIG welding method is suitable for the butt welding 22 of the side walls 5b, 9b of the clutch rotor 9 and the rotor rotor 5.
- a magnetic shield ring 23 made of a magnetic material (for example, soft magnetic iron) for preventing the passage of the magnetic flux of the permanent magnets 5c, 5c is attached to the inner peripheral surface of the permanent magnets 5c, 5c,. Install along.
- the clutch coater 9 and the coater rotor 5 are rotated around their axes.
- the welding torch T is rotated around the axis of the clutch rotor 9 and the rotor 5 to perform welding 22 on the butt portion.
- the magnetic flux of the permanent magnets 5c, 5c ... is shielded from the influence on the above-mentioned welded portion by the magnetic shield ring 23, the beam or arc emitted by the welding torch T force during welding is permanent. Since it is possible to prevent the magnets 5c, 5c ... from being attracted to each other, and to prevent the irradiation position of the beam or arc from being applied to the workpiece, the clutch rotor 9 and the rotor rotor 5 can be reliably welded to each other. The ability to effectively prevent defects from occurring.
- the magnetic shield ring 23 surrounding the beam or arc generating part is replaced by a welding torch instead of the magnetic shield ring 23 of the previous embodiment. Since the other configuration is the same as the previous embodiment, In FIG. 3, parts corresponding to those of the previous embodiment are denoted by the same reference numerals, and description thereof is omitted.
- the magnetic shield cylinder 24 can reliably weld a large number of clutch counters 9 and rotors 5 only once by attaching it to the welding torch T, and has good workability.
- the magnetic shield ring 23 and the magnetic shield cylinder 24 are used in combination, the effect of the magnetic flux of the permanent magnets 5c, 5c,. It can be prevented more reliably.
- a step 26 is provided between the side faces of the clutch rotor 9 and the rotor rotor 5 on both side walls 5b, 9b facing the rotor rotor 5, and the step 26 is formed between the both side walls 5b, 9b. 4 is welded to the formed annular corner 27 to integrate the two side walls 5b and 9b.
- Other configurations are the same as those in FIG. Corresponding parts have the same reference characters allotted, and description thereof will not be repeated.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding Control (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004023997A JP2005211967A (ja) | 2004-01-30 | 2004-01-30 | 発電機用アウタロータと他部材との溶接方法 |
JP2004-023997 | 2004-01-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005072901A1 true WO2005072901A1 (ja) | 2005-08-11 |
Family
ID=34823904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/001191 WO2005072901A1 (ja) | 2004-01-30 | 2005-01-28 | 発電機用アウタロータと他部材との溶接方法 |
Country Status (2)
Country | Link |
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JP (1) | JP2005211967A (ja) |
WO (1) | WO2005072901A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011100987A1 (en) * | 2010-02-16 | 2011-08-25 | Siemens Aktiengesellschaft | Method for assembling part of a generator, generator and wind turbine |
CN103138497A (zh) * | 2011-12-01 | 2013-06-05 | 日本电产株式会社 | 马达的制造方法、马达和盘驱动装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5057934A (ja) * | 1973-09-25 | 1975-05-20 | ||
JPS6011637U (ja) * | 1983-07-01 | 1985-01-26 | 三菱電機株式会社 | 発電機用回転子 |
JPS62292276A (ja) * | 1986-06-11 | 1987-12-18 | Origin Electric Co Ltd | プラズマト−チ |
-
2004
- 2004-01-30 JP JP2004023997A patent/JP2005211967A/ja active Pending
-
2005
- 2005-01-28 WO PCT/JP2005/001191 patent/WO2005072901A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5057934A (ja) * | 1973-09-25 | 1975-05-20 | ||
JPS6011637U (ja) * | 1983-07-01 | 1985-01-26 | 三菱電機株式会社 | 発電機用回転子 |
JPS62292276A (ja) * | 1986-06-11 | 1987-12-18 | Origin Electric Co Ltd | プラズマト−チ |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011100987A1 (en) * | 2010-02-16 | 2011-08-25 | Siemens Aktiengesellschaft | Method for assembling part of a generator, generator and wind turbine |
CN102754310A (zh) * | 2010-02-16 | 2012-10-24 | 西门子公司 | 用于组装发电机零件的方法、发电机和风力涡轮机 |
JP2013520149A (ja) * | 2010-02-16 | 2013-05-30 | シーメンス アクチエンゲゼルシヤフト | 発電機の一部の組み立て方法、発電機および風車 |
CN103138497A (zh) * | 2011-12-01 | 2013-06-05 | 日本电产株式会社 | 马达的制造方法、马达和盘驱动装置 |
CN103138497B (zh) * | 2011-12-01 | 2015-12-02 | 日本电产株式会社 | 马达的制造方法 |
Also Published As
Publication number | Publication date |
---|---|
JP2005211967A (ja) | 2005-08-11 |
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