WO2014087461A1 - 回転電機の回転子およびその製造方法 - Google Patents
回転電機の回転子およびその製造方法 Download PDFInfo
- Publication number
- WO2014087461A1 WO2014087461A1 PCT/JP2012/081237 JP2012081237W WO2014087461A1 WO 2014087461 A1 WO2014087461 A1 WO 2014087461A1 JP 2012081237 W JP2012081237 W JP 2012081237W WO 2014087461 A1 WO2014087461 A1 WO 2014087461A1
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- WIPO (PCT)
- Prior art keywords
- rotor
- claw
- balance correction
- pair
- recess
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/04—Balancing means
-
- 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
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
- H02K1/243—Rotor cores with salient poles ; Variable reluctance rotors of the claw-pole type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/527—Fastening salient pole windings or connections thereto applicable to rotors only
- H02K3/528—Fastening salient pole windings or connections thereto applicable to rotors only of the claw-pole type
Definitions
- the present invention relates to a rotor of a vehicle AC generator mounted on a vehicle or the like as a rotating electric machine, and more particularly to a claw pole type rotor and a manufacturing method thereof.
- a claw pole type rotor for an AC generator for a vehicle is configured such that claws extending in the axial direction from the base portion of the first and second claw poles are alternately meshed, and this type of rotor is assembled. It is required to balance around the axis after completion.
- a claw pole is provided with a drill hole and a part of the material is removed to correct the unbalance.
- the primary balance hole provided in advance on the shaft outer surface of the pole base and the base of the nail having an R shape connecting the base and the claw after the fan is fixed on the shaft outer surface.
- a secondary balance drill hole is provided that corrects the balance as a rotor without damaging the fan.
- vibrations from the vehicle are also applied during rotation, and if the above unbalance is large, it may cause annoying noise expansion, deterioration in durability, performance deterioration, etc. It is desired that the rotor imbalance be as small as possible.
- Patent Document 2 when connecting the slip ring and the field coil lead wire with the connection terminal, the connection terminal is housed in a radial groove provided on one end face of the claw pole, A vehicular AC generator rotor that has improved vibration resistance and centrifugal force resistance by molding is proposed. (For example, see Patent Document 2 and FIG. 3)
- balance correction of the claw pole itself is indispensable, but an effective method for taking a balance due to the volume of the groove is as follows. Although not shown, the processing time, the processing depth, and the number of processing for the claw pole increased, and the structure was inevitably affected by the influence on the magnetic circuit.
- the present invention realizes simplification of the machining process, reduction of the machining cost, and reduction of the manufacturing time by performing a balance correction by a simple method on the radial groove that is a cause of unbalance. It is for the purpose.
- the pair of groove shapes A balance correction recess by a casting mold is provided at least on the shoulder of the claw-shaped magnetic pole closest to the circumferentially equal position with respect to the recess.
- FIG. 1 It is sectional drawing which shows the rotor structure of the rotary electric machine by Embodiment 1 of this invention. It is a side perspective view of the field core body of the rotor of FIG. It is a principal part expansion perspective view which shows the example of a balance correction
- FIG. 1 is a cross-sectional view showing a rotor structure of a rotating electrical machine according to Embodiment 1 of the present invention.
- a rotor 1 of a rotating electrical machine is provided with a field coil 2 that generates magnetic flux, and a first field magnet that is provided so as to cover the field coil 2 and has claw-shaped magnetic poles (claw poles) that are set to engage with each other.
- the field core 2 includes a core body 3 and a second field core body 4, and the field coil 2 is wound around an insulating bobbin 5.
- the slip ring assembly 7 is configured to supply current from the outside to the two slip rings via a brush (not shown).
- the lead wire 6 drawn out from the field coil 2 is drawn out from a lead wire locking portion 14 provided in the flange portion of the insulating bobbin 5 and connected to the slip ring assembly 7. As described above, it extends along the outer end surface from the valley 41 between the adjacent claw-shaped magnetic poles of the second field core body 4, and is connected to the terminals 8 and 9 constituting the slip ring assembly 7 via the lead wire connection point 10. Connected.
- the lead wire 6 extends from the valley portion 41 between the above-mentioned adjacent claw-shaped magnetic poles to the connection portion with the lead wire connection portion 10 arranged around the outer periphery of the shaft 13 on the off-axis end surface of the field core body 4. Therefore, for durability and reliability, it is housed in groove-like recesses 43 and 44 (FIG. 2) provided on the side surface 42 of the rear-side field core body 4. By storing in the groove-like recesses 43 and 44, the extended lead wire 6 is held to some extent, and the groove-like recesses 43 and 44 also serve as a guide at the time of electrical connection.
- the lead wire 6 corresponds to the start and end of winding of the field coil 2, and in this case, the groove-like recesses 43 and 44 are provided in two substantially radial directions on the same diagonal line.
- the lead wire 6 is sandwiched, and an electrode (not shown) is pressed against both outer surfaces with a predetermined force to energize, and the insulating film of the lead wire 6 is melted by the electric resistance heat. Electrical connection between the line 6 and the terminals 8 and 9 is performed. Further, cooling fans 11 and 12 are fixed to the rotor 1, and a shaft 13 for rotating the rotor 1 is further provided.
- a balance correction dent 45 is simultaneously provided in the casting mold for casting the field core body at the position of 90 degrees apart, thereby obtaining the field core body 4 in which the balance is already improved in the cast shape. be able to.
- the machining process can be eliminated, and the manufacturing time and cost can be reduced.
- the balance correction dent 45 formed of the casting mold may be any shape that can be easily formed as a mold protrusion, and various shapes are conceivable.
- the thing of the hollow shape shown in FIG. 3 and the slide-like thing shown in the perspective view of FIG. 5 can be considered, it is not restricted to this. It is also possible to incorporate a shape that takes into account wind noise during rotation.
- the claw-shaped magnetic pole base portion (shoulder portion A) of the field core body which is the location where the balance correction dent 45 is applied by the casting mold, may be tapered or rounded, and each is limited. It is not a thing.
- the two groove-like recesses 43 and 44 have been shown as examples in which they are provided in series in the substantially radial direction on the same diagonal line.
- the two groove-like recesses 43 and 44 correspond to the entire valleys 41 between the claw-shaped magnetic poles.
- a configuration in which the same groove-shaped recess is provided is also conceivable. In this case, it seems that the balance is improved as compared with the case where the two groove-like recesses 43 and 44 are provided.
- the balance correction recess 45 is used as the balance between the two groove-like recesses 43 and 44.
- the application to the claw-shaped magnetic pole base (shoulder A) has an advantage that the dent shape can be relatively small because the balance correction dent 45 is substantially the outermost peripheral part.
- the groove-like recesses 43 and 44 and the balance correction recess 45 may be provided only in the field core body 4, but the cost concept for sharing the manufacturing parts is required. Needless to say, the field core 3 can also be provided with the same components.
- the balance correction recess is provided with six claw-shaped magnetic poles uniformly arranged around the axis, and further provided with two groove-like recesses symmetrically about the axis.
- the number and arrangement of the claw-shaped magnetic poles are not limited to this.
- five claw-shaped magnetic poles are unevenly arranged, and the groove-shaped recesses are diagonal lines.
- various magnetic pole configurations can be dealt with, such as providing a balance correction recess in the claw-shaped magnetic pole part closest to the position equally divided in the circumferential direction from the two places.
- FIG. 4 and 5 are a side view and a perspective view of a field core body according to Embodiment 2 of the present invention.
- a balance correction recess by a casting mold is provided for each claw-shaped magnetic pole of the field core body. That is, the balance correction dent 45 is provided at a location equally spaced (for example, 90 degrees) from the groove-like dents 43 and 44, and a smaller balance correction dent 45 'is provided at other locations. This further improves the balance of the entire circumference.
- the portion can be processed using the balance correction dent, and the processing can be performed stably.
- the claw-shaped magnetic pole base (shoulder) to be applied is formed in a round shape, the initial contact of the drill blade tip during the conventional correction processing is unstable and needs to be considered. Since there is already a dent and a cutting edge can be put in this part, consideration at the time of processing becomes unnecessary.
- a method of use in which the cutting edge is further stabilized by using it for jig positioning during rotor unbalance correction processing is also conceivable.
- FIG. 6 schematically shows how the cutting edge of the correction drill 50 is inserted into the balance correction recesses 45 and 45 ′ while avoiding the fan 12 that has already been attached. Further, when it is not desired to process the balance correction recess, the drill shown in the drawing is replaced with a positioning jig, and for example, a processing candidate portion (+ mark in the drawing) on the right side of the balance correction recesses 45 and 45 ′ is processed. Can be considered.
- each shoulder A is provided with one large and small balance correction dent
- FIG. 7 shows an example in which a plurality of the same shape are provided. That is, the one corresponding to the large balance correction dent 45 of the second embodiment is provided with three balance correction dents 45 ′ and one small balance correction dent 45 ′, all having the same shape.
- the balance correction dent corresponding to the volume of the groove-like dents 43, 44 can be provided in an equal fraction (here, 10 locations) and incorporated in the casting mold. Can do.
- the machining process can be controlled more easily than in the second embodiment.
- the dent to be applied is divided into a plurality of parts, at least the balance correction dent 45 can be made small, and a product with a large shaving allowance in processing can be obtained.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
- Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
特に車両に搭載される交流発電機の回転子においては、回転時にも車両からの振動が加わり、上記アンバランスが大きいと、耳障りな騒音拡大、耐久性低下、性能悪化などを引き起こす恐れがあり、回転子のアンバランスは可能な限り小さいことが望まれている。
図1はこの発明の実施の形態1による回転電機の回転子構造を示す断面図である。回転電機の回転子1は磁束を発生させる界磁コイル2と、この界磁コイル2を覆って設けられ、交互に噛み合うように設定された爪状磁極(クローポール)を有する第一の界磁コア体3及び第二の界磁コア体4からなる界磁コアを有しており、界磁コイル2は絶縁ボビン5の周囲に巻回されている。スリップリングアセンブリ7は図示しないブラシを介して2つのスリップリングへ電流を外部から供給するよう構成されている。
勿論、鋳造型によるバランス補正凹み45を施す箇所である、界磁コア体の爪状磁極根元部(肩部A)は、テーパ状であっても、アール状であってもよく、それぞれ限定するものではない。
図4、図5はこの発明の実施の形態2を示す界磁コア体の側面視図と斜視図である。実施の形態1と異なり、界磁コア体の爪状磁極毎に、鋳造型によるバランス補正凹みを設けるものである。すなわち、溝状凹み部43、44から等分(例えば90度)に離れた箇所にバランス補正凹み45を、その他の箇所に、それよりも小さいバランス補正凹み45´を設けている。こうすることにより、さらに全周囲のバランスが良くなる。バランス補正凹み45のみでバランスをとる場合に比べ、小さいバランス補正凹み45´を設けることにより、バランス補正凹み45を大きくとり過ぎることなく構成できる特徴がある。
上述の実施の形態2では、各肩部Aに1つずつのバランス補正凹みで大小のものを設けたが、全て同じ形状のものを複数設けた例を図7に示す。すなわち、実施の形態2の大きいバランス補正凹み45に相当するものは3個のバランス補正凹み45´、小さいバランス補正凹み45´には1個と、全て同じ形状で設けたものである。溝状凹み部43、44の体積分に相当するバランス補正凹みが適宜等分数(ここでは10箇所分)で設けることができるよう、例えば計算機による解析などを用いて算出し、鋳造型に盛り込むことができる。この構成とすることで、単一バランス補正を行う凹みの形状がどの爪箇所でも同じであるので、実施の形態2に比べ、加工工程の制御が容易となる。また、施す凹みを複数に分けるので、少なくともバランス補正凹み45が小さくでき、加工での削り取り裕度が大きい製品が得られる。
Claims (5)
- 磁束を発生させるための界磁コイルと、
複数の爪状磁極を有し、この爪状磁極内径側に上記界磁コイルを内包するよう回転軸周囲に支持する一対の界磁コア体と、
上記界磁コイルに回転子外部から界磁電流を供給するスリップリングアセンブリと、
上記スリップリングアセンブリと上記界磁コイルとを接続する一対の口出し線とを有し、上記界磁コア体の軸外側面に上記一対の口出し線を収納保護する一対の溝状凹み部を備えた回転電機の回転子において、
上記一対の溝状凹み部に対して、少なくとも周方向等分の位置に最も近い爪状磁極の肩部に、鋳造型によるバランス補正凹みを設けたことを特徴とする回転電機の回転子。 - 上記溝状凹み部は、回転軸を挟んで略径方向に2箇所設けられ、上記鋳造型によるバランス補正凹みも2箇所設けられることを特徴とする請求項1に記載の回転電機の回転子。
- 上記鋳造型によるバランス補正凹みを複数の爪状磁極の全肩部に設けると共に、上記一対の溝状凹み部に対して周方向等分の位置に最も近い爪状磁極の肩部に設けるバランス補正凹みが、他に設けるものより大きいことを特徴とする請求項1に記載の回転電機の回転子。
- 上記鋳造型によるバランス補正凹みを複数の爪状磁極の全肩部に設けると共に、上記一対の溝状凹部に対して周方向等分の位置に最も近い爪状磁極の肩部にのみ複数個、他の肩部には単一のバランス補正凹みを設け、全てのバランス補正凹みはほぼ同一形状であることを特徴とする請求項1に記載の回転電機の回転子。
- 上記鋳造型によるバランス補正凹みを回転子アンバランス補正加工時の治具位置決めに用いることを特徴とする請求項1~4のいずれか1項に記載の回転電機の回転子の製造方法。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12889540.6A EP2928051B1 (en) | 2012-12-03 | 2012-12-03 | Rotor of rotating electrical machine and method for manufacturing same |
CN201910053234.5A CN109660037A (zh) | 2012-12-03 | 2012-12-03 | 旋转电机的转子及其制造方法 |
JP2014550811A JP5931216B2 (ja) | 2012-12-03 | 2012-12-03 | 回転電機の回転子およびその製造方法 |
PCT/JP2012/081237 WO2014087461A1 (ja) | 2012-12-03 | 2012-12-03 | 回転電機の回転子およびその製造方法 |
CN201280076202.3A CN104704727A (zh) | 2012-12-03 | 2012-12-03 | 旋转电机的转子及其制造方法 |
US14/422,904 US9825505B2 (en) | 2012-12-03 | 2012-12-03 | Rotor of rotary electric machine and manufacturing method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2012/081237 WO2014087461A1 (ja) | 2012-12-03 | 2012-12-03 | 回転電機の回転子およびその製造方法 |
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WO2014087461A1 true WO2014087461A1 (ja) | 2014-06-12 |
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Family Applications (1)
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PCT/JP2012/081237 WO2014087461A1 (ja) | 2012-12-03 | 2012-12-03 | 回転電機の回転子およびその製造方法 |
Country Status (5)
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US (1) | US9825505B2 (ja) |
EP (1) | EP2928051B1 (ja) |
JP (1) | JP5931216B2 (ja) |
CN (2) | CN109660037A (ja) |
WO (1) | WO2014087461A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009001745A1 (de) * | 2009-03-23 | 2010-09-30 | Robert Bosch Gmbh | Klauenpol mit Zentrierpunkt |
JP6222032B2 (ja) * | 2014-10-14 | 2017-11-01 | 株式会社デンソー | 回転電機 |
CN112112896B (zh) * | 2020-09-10 | 2022-05-31 | 山东博特轴承有限公司 | 一种磁力轴向轴承 |
US11957642B2 (en) * | 2022-04-22 | 2024-04-16 | Kikusui Seisakusho Ltd. | Internal substance supplier and method of producing molded product |
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2012
- 2012-12-03 JP JP2014550811A patent/JP5931216B2/ja not_active Expired - Fee Related
- 2012-12-03 CN CN201910053234.5A patent/CN109660037A/zh active Pending
- 2012-12-03 US US14/422,904 patent/US9825505B2/en not_active Expired - Fee Related
- 2012-12-03 CN CN201280076202.3A patent/CN104704727A/zh active Pending
- 2012-12-03 WO PCT/JP2012/081237 patent/WO2014087461A1/ja active Application Filing
- 2012-12-03 EP EP12889540.6A patent/EP2928051B1/en not_active Not-in-force
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Also Published As
Publication number | Publication date |
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CN104704727A (zh) | 2015-06-10 |
JP5931216B2 (ja) | 2016-06-08 |
CN109660037A (zh) | 2019-04-19 |
EP2928051A4 (en) | 2016-07-27 |
US20150229181A1 (en) | 2015-08-13 |
EP2928051B1 (en) | 2019-01-23 |
US9825505B2 (en) | 2017-11-21 |
EP2928051A1 (en) | 2015-10-07 |
JPWO2014087461A1 (ja) | 2017-01-05 |
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