WO2016013683A1 - 車両駆動用モータの積層鉄心の製造方法 - Google Patents
車両駆動用モータの積層鉄心の製造方法 Download PDFInfo
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- WO2016013683A1 WO2016013683A1 PCT/JP2015/071291 JP2015071291W WO2016013683A1 WO 2016013683 A1 WO2016013683 A1 WO 2016013683A1 JP 2015071291 W JP2015071291 W JP 2015071291W WO 2016013683 A1 WO2016013683 A1 WO 2016013683A1
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- arc
- circumferential direction
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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
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/26—Seam welding of rectilinear seams
-
- 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
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
Definitions
- the present invention relates to a method for manufacturing a laminated core of a vehicle drive motor.
- Patent Document 1 listed below describes a laminated core formed by sequentially caulking and laminating annular core pieces made of a plurality of segment core pieces arranged in a ring.
- an object of the present invention is to provide a method for manufacturing a laminated core of a vehicle drive motor that can reduce the manufacturing cost and reduce the number of parts and the number of assembly steps of the vehicle drive motor. .
- a method of manufacturing a laminated iron core for a motor for driving a vehicle wherein a plurality of arc-shaped iron cores having different key protrusions and different key protrusions are formed by pressing a strip-shaped magnetic steel sheet.
- the laminated iron core of the vehicle drive motor can be manufactured by the above pressing process, laminating process and welding process, dedicated equipment for simultaneously performing caulking and laminating is not required. As a result, the manufacturing cost can be reduced.
- the vehicle drive is compared to a configuration in which key parts are attached to the key recess. The number of motor parts and assembly man-hours can be reduced.
- the arc-shaped iron core piece has a short key convex portion in which the length along the circumferential direction is 1 ⁇ 2 the key convex portion in the circumferential direction.
- two types of arc-shaped core pieces in which short key convex portions whose length along the circumferential direction is 1 ⁇ 2 of the key convex portion are formed on different ones at both ends in the circumferential direction
- the key convex part can be formed in the connecting part of the arc-shaped iron core pieces.
- the manufacturing cost can be reduced, and the number of parts and the number of assembly steps of the vehicle drive motor can be reduced.
- FIG. 3 is a schematic cross-sectional view showing a cut surface along a 3-3 cross-sectional line in FIG. 1.
- FIG. 1 It is a front view which shows the lamination
- laminated core manufactured by the method for manufacturing a laminated core of a vehicle drive motor according to the present embodiment (hereinafter simply referred to as “laminated core”) will be described.
- this laminated core 10 is a laminated rotor core used on the rotor side of a vehicle drive motor (electric motor), and is a constituent element of a rotor with magnets.
- a laminated core body 16 formed by laminating a plurality of annular core pieces 14 in which arc-shaped core pieces 12 (divided core pieces) divided into four are arranged in a ring shape is formed by a plurality of welded portions 18. It is formed by being integrated.
- Each arc-shaped iron core piece 12 has an arc angle ⁇ set to 90 degrees in this embodiment.
- a plurality of (here, four) arc-shaped magnet mounting portions 20 (magnetic pole pieces) arranged in the circumferential direction are formed on the outer peripheral portion of each arc-shaped core piece 12. These magnet mounting portions 20 have an arc angle ⁇ of 22.5 degrees, and each magnet mounting portion 20 has a magnet mounting hole 22 for mounting a magnet.
- a plurality (four in this case) of circular guide holes 24 arranged in the circumferential direction are formed in the intermediate portion in the width direction (intermediate portion between the outer periphery and the inner periphery) of each arc-shaped core piece 12.
- These guide holes 24 are guide pins 68 (see FIG. 7) provided in an alignment jig 62 (see FIGS. 7 and 8) used when the plurality of annular core pieces 14 are laminated and when the laminated core body 16 is welded. It is a pilot hole for inserting.
- the guide hole 24 and the magnet mounting portion 20 are provided so as to be arranged every 22.5 degrees in a state where the circular core pieces 14 are arranged by arranging the circular core pieces 12 in a ring shape.
- the hole 24 is provided in the same phase as the magnet mounting portion 20 in the circumferential direction of the annular core piece 14.
- the annular core pieces 14 that are overlapped with each other are laminated in a so-called brick pile with the joints 26 between the arc-shaped core pieces 12 in the circumferential direction being phase-shifted in the circumferential direction.
- the phase shift angle is set to 22.5 degrees, which is the same as the arc angle ⁇ of the magnet mounting portion 20.
- the magnet mounting portion 20 and the guide hole 24 are arranged every 22.5 degrees, and therefore each of the magnet mounting portion 20 and the guide hole 24 is provided.
- the position of coincides with the stacking direction. Therefore, the magnet mounting part 20 and the guide hole 24 penetrate from the one axial end side of the laminated core body 16 to the other axial end side.
- a plurality of welded portions 18 for integrating the plurality of annular core pieces 14 laminated as described above are provided in the inner peripheral portion of the laminated core body 16 side by side in the circumferential direction.
- the plurality of welds 18 are provided in the same number as the number of magnetic poles of the laminated core body 16 (here, 16 poles), and the arc-shaped core pieces 12 of each layer that are out of phase in the circumferential direction are arranged in the lamination direction. Welding (joining) along.
- the plurality of welded portions 18 are located on the opposite side of the magnet mounting portion 20 through the guide holes 24, and are provided on the inner peripheral portion of the laminated core body 16 every 22.5 degrees.
- a pair of key convex portions 28 are formed at opposing positions on the inner peripheral portion, and these key convex portions 28 are formed at intermediate positions between the adjacent welded portions 18.
- the pair of key convex portions 28 serve as a connecting portion when the laminated core 10 can be assembled to the rotor of the vehicle drive motor.
- the arc-shaped iron core pieces 12 are six kinds of arc-shaped iron core pieces 12 ⁇ / b> A, 12 ⁇ / b> B, 12 ⁇ / b> C, 12 ⁇ / b> D, 12 ⁇ / b> E, 12 ⁇ / b> F that have different key protrusions 28 and different key protrusions 28. Yes.
- the arc-shaped iron core piece 12A is formed with a short key convex portion 29 whose circumferential length is 1 ⁇ 2 of the key convex portion 28 at one end (upper end in FIG. 9) of both ends in the circumferential direction. .
- the arc-shaped iron core piece 12B has a key convex portion 28 formed at a position of 22.5 degrees from the center in the circumferential direction to one end (upper end in FIG. 9).
- the arc-shaped iron core piece 12C has a key convex portion 28 formed at the center in the circumferential direction.
- the arc-shaped iron core piece 12D has a key convex portion 28 formed at a position of 22.5 degrees from the center in the circumferential direction to the other end (lower end in FIG. 9).
- the arc-shaped iron core piece 12E has a short key convex portion 29 whose circumferential length is 1 ⁇ 2 of the length of the key convex portion 28 at the other end (the lower end in FIG.
- the key-shaped convex part 28 is not formed in the arc-shaped iron core piece 12F.
- the key convex portion 28 is formed by connecting the short key convex portion 29 of the arc-shaped core piece 12A and the short key convex portion 29 of the arc-shaped core piece 12E in the circumferential direction.
- the manufacturing method of the laminated core 10 is comprised by the press process which is the 1st process, the lamination process which is the 2nd process, the welding process which is the 3rd process, and the inspection process which is the 4th process.
- the presence or absence of the key convex portion 28 and the key convex portion are formed on the single plate 30 with the carrier by controlling on / off of five slit cut portions (not shown) provided in the press machine.
- Six types of arc-shaped core pieces 12A, 12B, 12C, 12D, 12E, and 12F are press-formed.
- the arc-shaped core pieces 12 are sequentially separated from the single plate 30 with the carrier to be conveyed, and the plurality of annular core pieces 14 are formed while arranging the separated arc-shaped core pieces 12 in a ring shape to form the annular core pieces 14.
- the laminated core body 16 is manufactured by laminating with the phases shifted in the circumferential direction. Specifically, first, the reel 34 is attached to the reel stand 36 shown in FIG. 4, and the single plate 30 with the carrier wound around the reel 34 is unwound so that the laminated assembly apparatus 38 shown in FIG. 4 and FIG. It is wound around the guide roller 40 and inserted into the laminated assembly apparatus 38.
- a feed feeder 42 In the laminating and assembling apparatus 38, a feed feeder 42, a servo press 46, an electric index machine 48, a robot cylinder 50, and a control panel 52 for controlling these operations are provided.
- the feed feeder 42 holds the single plate 30 with the carrier inserted into the stacking assembly apparatus 38 and conveys it to the servo press 46 and the electric index machine 48 side.
- the direction shown by the arrow A in FIG.4 and FIG.5 is a conveyance direction of the single plate 30 with a carrier.
- the arc-shaped iron core piece 12 is arranged at a right angle with respect to the carrier conveying direction in order to improve material collection efficiency and avoid deformation of the arc-shaped iron core piece 12 when the carrier is wound and stored. Is done.
- the servo press 46 is provided with a connecting portion cut type punch 54, and the carrier-attached single plate 30 conveyed between the servo press 46 and the connecting portion cut type die 56 disposed on the lower side of the punch 54.
- the arc-shaped core pieces 12 are sequentially cut off from the connecting portion 32.
- the connecting portion 32 from which the arc-shaped core piece 12 is cut is discharged out of the laminating and assembling apparatus 38 through the inside of the transport pipe 58 (not shown in FIGS. 4 and 5) shown in FIG. It is conveyed to the cutting machine.
- the alignment jig 62 includes a ring-shaped lower plate 64 and a plurality of (here, 16) guide pins 68 (pilot pins) protruding upward from the lower plate 64. And a plurality (eight in this case) of columns 70 protruding upward from the alignment jig 62.
- pillars 70 can be changed suitably.
- the 16 guide pins 68 are arranged at equal intervals (interval of 22.5 degrees) in the circumferential direction of the lower plate 64, and are firmly fixed to the lower plate 64. Further, the eight struts 70 are arranged at equal intervals (intervals of 45 degrees) in the circumferential direction of the lower plate 64 on the inner peripheral side of the lower plate 64 relative to the 16 guide pins 68, and are firmly attached to the lower plate 64. It is fixed to.
- the alignment jig 62 includes the ring-shaped upper plate 72 shown in FIG. 8, but is used in a state where the upper plate 72 is removed in the stacking process.
- the arcuate core pieces 12 pushed onto the alignment jig 62 are held on the alignment jig 62 with the guide pins 68 inserted into the four guide holes 24, respectively.
- the alignment jig 62 is rotated about the vertical axis by the rotary table 60 of the electric index machine 48 in conjunction with the feed feeder 42 and the servo press 46 and is lowered by the ROBO cylinder 50 at a predetermined timing.
- the aligning jig 62 is shown in FIG. Is rotated 90 degrees (the arc angle ⁇ of the arc-shaped core piece 12) in the direction of arrow B of 5. By repeating this 90-degree rotation three times, one layer of the core piece 14 is completed.
- the alignment jig 62 is lowered by the thickness of the arc-shaped iron core piece 12 by the ROBO cylinder 50 and rotated 22.5 degrees (phase shift angle ⁇ ) in the direction of arrow B in FIG. Is done.
- the plurality of annular core pieces 14 are laminated (rotated and laminated) with the phases shifted in the circumferential direction, and the laminated core body 16 is manufactured.
- the circular core pieces 12C, 12F, 12C, and 12F are annularly arranged in the circumferential direction in this order, and the first-layer annular core pieces 14 are completed.
- the circular core pieces 14F, 12B, 12F, and 12B are arranged in a ring in the circumferential direction in this order, and the second-layer annular core pieces 14 are completed.
- the circular core pieces 12A, 12E, 12A, and 12E are arranged in a ring in the circumferential direction in this order, and the third-layer annular core pieces 14 are completed.
- the annular core pieces 12D, 12F, 12D, and 12F are arranged in an annular shape in the circumferential direction in this order, and the fourth-layer annular core pieces 14 are completed.
- the circular core pieces 14F, 12C, 12F, and 12C are arranged in a ring in the circumferential direction in this order, and the fifth-layer annular core pieces 14 are completed.
- the arc-shaped core pieces 12B, 12F, 12B, and 12F are annularly arranged in the circumferential direction in this order, and the sixth-layer annular core pieces 14 are completed.
- the circular core pieces 12E, 12A, 12E, and 12A are arranged in an annular shape in the circumferential direction in this order, and the seventh-layer annular core pieces 14 are completed.
- the circular core pieces 14F, 12D, 12F, and 12D are annularly arranged in the circumferential direction in this order to complete the eighth-layer annular core pieces 14. Note that the direction indicated by the arrow A in FIG. 10 is the conveying direction of the arc-shaped core pieces 12.
- the annular core pieces 14 are laminated by the above-described lamination step, and the position of the key convex portion 28 coincides with the lamination direction. Then, the manufactured laminated core body 16 is detached from the turntable 60 together with the alignment jig 62, and the process proceeds to the next welding process.
- the arc-shaped iron cores of the respective layers that are out of phase in the circumferential direction at a plurality of portions arranged in the circumferential direction in the inner circumferential portion of the laminated core body 16 (here, 16 locations: refer to the welded portions 18 in FIGS. 1 and 3).
- the pieces 12 are welded along the stacking direction.
- the upper plate 72 is attached to the alignment jig 62.
- the upper plate 72 is fixed to the upper ends of the eight columns 70 by, for example, bolt fastening, and holds the laminated core body 16 at a predetermined thickness.
- the laminated core body 16 is held at a predetermined thickness by a dedicated holding device that holds the upper plate 72 and the lower plate 64 up and down with eight columns 70 interposed therebetween.
- an alignment jig 62 is mounted on a turntable 60 provided in the fiber laser welder, and the above-described welding is performed by the fiber laser welder.
- subjected in FIG. 8 is the torch of a fiber laser welding machine.
- the laminated iron core 10 is completed.
- the completed laminated iron core is subjected to a predetermined inspection in the inspection process of the next process.
- the laminated iron core 10 is manufactured by the press process, the lamination process, and the welding process described above.
- the laminated core body 16 is formed by laminating a plurality of annular core pieces 14 each constituted by a plurality of circular arc-shaped core pieces 12 arranged in a ring with a phase shifted in the circumferential direction.
- a plurality of welded portions 18 are arranged in the circumferential direction on the inner peripheral portion of the laminated core body 16. In these welds 18, the arc-shaped core pieces 12 of the respective layers that are out of phase in the circumferential direction are welded along the stacking direction.
- the laminated iron core 10 provided with the key convex part 28 aligned in the lamination direction can be manufactured.
- the key convex portion 28 on the inner periphery of the laminated core 10, no key parts are required when assembling the rotor of the vehicle drive motor. For this reason, compared with the structure which attaches key parts to a key recessed part, the number of parts of a vehicle drive motor and an assembly man-hour can be reduced.
- the two types of arcuate shapes in which the short key convex portion 29 whose length along the circumferential direction is half the length of the key convex portion is formed on one of the opposite ends of the circumferential direction.
- Iron core pieces 12A and 12E are used.
- the short key convex portion 29 of the arc-shaped core piece 12A and the short key convex portion 29 of the arc-shaped core piece 12E are connected in the circumferential direction, thereby connecting the arc-shaped core piece 12A and the arc-shaped core piece 12E.
- the key convex part 28 can be formed in the part.
- the pair of key convex portions 28 are formed at opposing positions on the inner peripheral portion of the laminated core 10.
- the present invention is not limited to this, and the number of the key convex portions 28 of the laminated core body 16 is appropriately changed. can do.
- the arc-shaped iron core piece 12 was made into six types from which the presence or absence of the key convex part 28 and the arrangement
- the arc-shaped iron core piece 12 is used as a key. It can change suitably other than the six types from which the presence or absence of the convex part 28 and the arrangement
- the arc-shaped iron core piece 12 is separated from the inner core diameter of the key convex portion 28 in order to avoid interference with a member incorporated on the inner peripheral side of the arc-shaped laminated core. Is also cut off excessively so as to be offset to the outer peripheral side.
- the laminated core body 16 has 16 poles.
- the present invention is not limited to this, and the number of magnetic poles of the laminated core body 16 can be changed as appropriate.
- the number of welds 18 is the same as the number of magnetic poles of the laminated core body 16.
- the present invention is not limited to this, and the number of welds can be changed as appropriate.
- a configuration may be employed in which half the number of magnetic poles of the laminated core body is provided.
Abstract
Description
先ず、本実施形態に係る車両用駆動モータの積層鉄心の製造方法によって製造された積層鉄心(以下、単に「積層鉄心」という)について説明する。
図9に示すように、円弧状鉄心片12は、キー凸部28の有無及びキー凸部28の配置の異なる6種類の円弧状鉄心片12A、12B、12C、12D、12E、12Fとなっている。円弧状鉄心片12Aは周方向の両端のうちの一端(図9の上端)に、周方向の長さがキー凸部28の長さの1/2の短キー凸部29が形成されている。また、円弧状鉄心片12Bは、周方向の中央より一端(図9の上端)方向へ22.5度の位置に、キー凸部28が形成されている。また、円弧状鉄心片12Cは周方向の中央に、キー凸部28が形成されている。また、円弧状鉄心片12Dは周方向の中央より他端(図9の下端)方向へ22.5度の位置に、キー凸部28が形成されている。また、円弧状鉄心片12Eは周方向の両端のうちの他端(図9の下端)に、周方向の長さがキー凸部28の長さの1/2の短キー凸部29が形成されている。さらに、円弧状鉄心片12Fにはキー凸部28が形成されていない。なお、円弧状鉄心片12Aの短キー凸部29と円弧状鉄心片12Eの短キー凸部29とが周方向に連結されることで、キー凸部28が形成されるようになっている。
次に、上記構成の積層鉄心10の製造方法について説明する。
図4~図6に示すように、プレス工程においては、帯状の磁性鋼板を、金型装置によりプレス加工することにより、複数の円弧状鉄心片12を一対の連結部32で連結したキャリア付き単板30を製造する。そして、製造したキャリア付き単板30をリール34に巻き回し、次工程の積層工程へと移行する。
積層工程では、搬送されるキャリア付き単板30から円弧状鉄心片12を順次切り離すと共に、切り離した円弧状鉄心片12を環状に並べて環状鉄心片14を形成しつつ、複数の環状鉄心片14を周方向に位相をずらして積層することにより積層鉄心本体16を製造する。具体的には、先ず、図4に示されるリールスタンド36にリール34を取り付けると共に、リール34に巻き回されたキャリア付き単板30を解いて図4及び図5に示される積層組立装置38の案内ローラ40に巻きかけ、当該積層組立装置38内に挿入する。
溶接工程では、積層鉄心本体16の内周部における周方向に並ぶ複数の部位(ここでは16箇所:図1及び図3の溶接部18参照)において、周方向に位相ずれした各層の円弧状鉄心片12を積層方向に沿って溶接する。具体的には、先ず、図8に示すように、整列治具62に上板72が取り付けられる。この上板72は、例えばボルト締結によって8本の支柱70の上端に固定され、積層鉄心本体16を所定の厚さに保持する。或いは、上板72と下板64を8本の支柱70を間に挟んで上下に挟持する専用の挟持装置によって、積層鉄心本体16を所定の厚さに保持する。
次に、本実施形態の作用及び効果について説明する。
上記実施形態では、積層鉄心10の内周部における対向する位置に一対のキー凸部28を形成したが、本発明はこれに限らず、積層鉄心本体16のキー凸部28の数は適宜変更することができる。
12 円弧状鉄心片
14 環状鉄心片
16 積層鉄心本体
18 溶接部
28 キー凸部
29 短キー凸部
30 キャリア付き単板
32 連結部
Claims (2)
- 帯状の磁性鋼板をプレス加工することにより、キー凸部の有無及び前記キー凸部の配置の異なる複数の円弧状鉄心片を連結部で連結したキャリア付き単板を製造するプレス工程と、
搬送される前記キャリア付き単板から前記円弧状鉄心片を順次切り離すと共に、切り離した前記円弧状鉄心片を環状に並べて環状鉄心片を形成しつつ、複数の前記環状鉄心片を周方向に位相をずらして積層することにより、前記キー凸部が積層方向に整列した積層鉄心本体を製造する積層工程と、
前記積層鉄心本体の内周部又は外周部における周方向に並ぶ複数の部位において、周方向に位相ずれした各層の前記円弧状鉄心片を積層方向に沿って溶接する溶接工程と、
を有する車両駆動用モータの積層鉄心の製造方法。 - 前記円弧状鉄心片は、周方向に沿った長さが前記キー凸部の1/2の長さとされた短キー凸部が周方向の両端部の異なる一方に形成された2種類の円弧状鉄心片を有する請求項1に記載の車両駆動用モータの積層鉄心の製造方法。
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US15/327,347 US10193426B2 (en) | 2014-07-25 | 2015-07-27 | Method for manufacturing a stacked iron core of a vehicle drive motor |
CN201580039866.6A CN106688166B (zh) | 2014-07-25 | 2015-07-27 | 车辆驱动用马达的层叠铁心的制造方法 |
JP2016536010A JP6486930B2 (ja) | 2014-07-25 | 2015-07-27 | 車両駆動用モータの積層鉄心の製造方法 |
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- 2015-07-27 CN CN201580039866.6A patent/CN106688166B/zh active Active
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JP6486930B2 (ja) | 2019-03-20 |
US10193426B2 (en) | 2019-01-29 |
US20170179797A1 (en) | 2017-06-22 |
JPWO2016013683A1 (ja) | 2017-04-27 |
CN106688166A (zh) | 2017-05-17 |
CN106688166B (zh) | 2019-05-14 |
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