WO2021117087A1 - 回転電機のロータおよび回転電機のロータの製造方法 - Google Patents

回転電機のロータおよび回転電機のロータの製造方法 Download PDF

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Publication number
WO2021117087A1
WO2021117087A1 PCT/JP2019/048059 JP2019048059W WO2021117087A1 WO 2021117087 A1 WO2021117087 A1 WO 2021117087A1 JP 2019048059 W JP2019048059 W JP 2019048059W WO 2021117087 A1 WO2021117087 A1 WO 2021117087A1
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WO
WIPO (PCT)
Prior art keywords
press
fitting portion
rotor
shaft
electric machine
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.)
Ceased
Application number
PCT/JP2019/048059
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English (en)
French (fr)
Japanese (ja)
Inventor
晃平 山口
岡崎　正文
阿久津　悟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to CN201980102727.1A priority Critical patent/CN114788137B/zh
Priority to EP19955667.1A priority patent/EP4075642A4/en
Priority to PCT/JP2019/048059 priority patent/WO2021117087A1/ja
Priority to JP2021563452A priority patent/JP7378496B2/ja
Priority to US17/771,573 priority patent/US12136853B2/en
Publication of WO2021117087A1 publication Critical patent/WO2021117087A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • 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
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/09—Magnetic cores comprising laminations characterised by being fastened by caulking
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Definitions

  • This application relates to a rotor of a rotary electric machine and a method of manufacturing a rotor of a rotary electric machine.
  • the rotor core is sandwiched between end plates provided at both ends in the axial direction of the rotor core and fixed by rivets (see, for example, Patent Document 1).
  • the rotor core is sandwiched between end plates provided at both ends in the axial direction of the rotor core formed by laminating steel plate materials (cores) and fixed by rivets. Therefore, there is a problem that the number of parts and the assembly process are large and the manufacturing cost of the rotor increases. Further, if the rotor core is fixed to the shaft only by press-fitting the shaft without using the end plate and the rivet, a gap is generated between the laminated plate materials due to the warp of the plate material, which causes vibration and noise. There was a problem that there was.
  • the rotor of the rotary electric machine solves such a problem, realizes a rotor of the rotary electric machine having a structure in which no gap is generated between the plate materials in which the rotor cores are laminated, and manufactures the rotor of the rotary electric machine at low cost by a simple process.
  • the purpose is to do.
  • the rotor of the rotary electric machine is A rotor core in which a ring-shaped plate of magnetic material is laminated in the axial direction, With a shaft press-fitted into the inner peripheral surface of the rotor core,
  • the inner peripheral surface of the rotor core is the first press-fitting portion, which is the axial section where the shaft is press-fitted, and the axial section adjacent to the first press-fitting portion, and the shaft has a larger margin than the first press-fitting portion.
  • the shaft is press-fitted into the inner peripheral surface of the rotor core from the side of the first press-fitting portion.
  • the method for manufacturing the rotor of the rotary electric machine is as follows.
  • the rotor of the rotary electric machine According to the rotor of the rotary electric machine according to the present application, it is possible to realize a rotor of the rotary electric machine having a configuration in which no gap is generated between the laminated plate materials at low cost. Further, the rotor of the rotary electric machine can be manufactured at low cost by a simple process.
  • FIG. 1 It is sectional drawing which shows the rotor of the rotary electric machine which concerns on Embodiment 1.
  • FIG. It is sectional drawing which shows the shaft press-fitting direction of the rotor core of the rotary electric machine which concerns on Embodiment 1.
  • FIG. It is sectional drawing which shows the deformation of the plate material of the 1st press-fitting part and the 2nd press-fitting part of the rotor core of the rotary electric machine which concerns on Embodiment 1.
  • FIG. It is sectional drawing which shows the shaft press-fitting direction of the rotor core of the rotary electric machine which concerns on Embodiment 2.
  • FIG. 1 It is sectional drawing which shows the deformation of the plate material of the 1st press-fitting part and the 2nd press-fitting part of the rotor core of the rotary electric machine which concerns on Embodiment 2.
  • FIG. It is sectional drawing which shows the deformation of the plate material of the 1st press-fitting part and the non-press-fitting part of the rotor core of the rotary electric machine which concerns on Embodiment 2.
  • FIG. It is sectional drawing which shows the rotor of the rotary electric machine which concerns on Embodiment 3.
  • FIG. It is sectional drawing which shows the shaft press-fitting direction of the rotor core of the rotary electric machine which concerns on Embodiment 3.
  • FIG. 1 is a cross-sectional view showing a rotor 1 of the rotary electric machine according to the first embodiment, and shows a cross section cut along a plane along the axis of the rotor 1.
  • FIG. 2 is a cross-sectional view showing a direction in which the shaft 4 is press-fitted into the rotor core 2 of the rotary electric machine according to the first embodiment.
  • FIG. 3 is a cross-sectional view showing deformation of the plate material 3 of the first press-fitting portion 12 and the second press-fitting portion 10 of the rotor core 2 of the rotary electric machine according to the first embodiment.
  • the rotor 1 is rotatably supported inside a stator (not shown) by a bearing (not shown) to form an inner rotor type rotary electric machine.
  • the rotor core 2 is formed by laminating a ring-shaped plate member 3 of an electromagnetic steel plate, and is fixed to a shaft 4 which is a rotating shaft of a rotary electric machine by press fitting.
  • the rotor core 2 is provided with a plurality of permanent magnets, and constitutes a so-called IPM (Interior Permanent Magnet) type rotor embedded with permanent magnets.
  • the rotor core 2 is formed by laminating a ring-shaped plate material 3 of an electromagnetic steel plate, and the material of the plate material 3 is a magnetic material such as iron, permalloy, or an amorphous magnetic alloy.
  • a central hole 9 into which the shaft 4 is press-fitted is formed on the inner peripheral surface of the rotor core 2.
  • the first press-fitting portion 12 which is an axial section in which the shaft 4 is press-fitted first and the shaft 4 is press-fitted and fixed, the dimension of the center hole 9 is slightly smaller than the outer diameter of the shaft 4.
  • the shaft 4 is press-fitted into the first press-fitting portion 12.
  • the inner diameter of the second press-fitting portion 10, which is an axial section adjacent to the first press-fitting portion in which the shaft 4 is press-fitted next to the first press-fitting portion 12, is set to be smaller than that of the first press-fitting portion 12. That is, the squeeze margin is set large.
  • the pressing force for pressing the shaft on the inner surface of the rotor core 2 is larger than the pressing force of the adjacent second press-fitting portion 12.
  • a stress is generated in which the peripheral edge portion of the plate material 3 of the second press-fitting portion 10 presses the peripheral edge portion of the plate material 3 of the first press-fitting portion 12, and no gap is formed between the laminated plate materials 3.
  • Rotor 1 can be obtained. The details will be described below.
  • FIG. 2 is a diagram showing the press-fitting direction of the shaft 4 into the rotor core 2.
  • the direction from the first press-fitting portion 12 of the rotor core 2 toward the second press-fitting portion 10 is referred to as the axial first side X1
  • the opposite direction is referred to as the axial second side X2.
  • the shaft 4 is press-fitted in the direction of the first side X1 in the axial direction.
  • the shaft is first press-fitted into the first press-fitting portion 12, and then is press-fitted into the second press-fitting portion while passing through the first press-fitting portion.
  • the plate material 3 is made of an electromagnetic steel plate having a plate thickness of 0.5 mm, but the plate thickness is not limited to this.
  • the component in the axial second side X2 and the component in the radial direction are separated by the returning force of the plate material 3 that has been distorted on the axial first side X1. The force it has presses on the shaft 4.
  • the force that presses the shaft 4 of the plate material 3 becomes a reaction force and presses the plate material 3 to deform the plate material 3 into a disc spring shape. Due to the plate material 3 trying to fall down at the portion in contact with the shaft 4, the peripheral edge portion of the plate material 3 generates stress on the second side X2 in the axial direction. Since this stress is larger in the second press-fitting portion 10 than in the first press-fitting portion 12, in the magnetic pole portion 8 which is the peripheral edge portion of the plate material 3 of the second press-fitting portion, the magnetic pole portion 8 of the second press-fitting portion 10 is the first. The magnetic pole portion 8 of the one press-fitting portion 12 is pressed in the direction of the second side X2 in the axial direction. As a result, it is possible to obtain a rotor 1 of a rotary electric machine having a structure in which no gap is generated between the laminated plate materials 3.
  • the plate material 3 of the second press-fitting portion 10 has a larger tightening allowance than the plate material 3 of the first press-fitting portion 12. That is, the inner diameter is small. Therefore, the stress of deforming like a disc spring becomes large, and as shown in FIG. 3, a second displacement amount D2 larger than the first displacement amount D1 of the first press-fitting portion 12 is generated.
  • the end portion on the inner side in the radial direction is displaced to the first side X1 in the axial direction by the first displacement amount D1 from the end portion on the outer side in the radial direction
  • the plate material 3 of the second press-fitting portion 10 Is that the radial inner end is displaced to the axial first side X1 by the second displacement D2
  • the second displacement D2 of the second press-fit portion is the first press-fit portion. It becomes larger than the first displacement amount D1 of.
  • the pressure for pushing down the magnetic pole portion 8 which is the peripheral edge portion of the plate material 3 is generated by the first displacement amount D1.
  • the second displacement amount D2 which is larger than the first displacement amount D1 generates a larger pressure for pushing down the magnetic pole portion 8 which is the peripheral edge portion of the plate member 3.
  • the magnetic pole portion 8 which is the peripheral edge portion of the plate material 3 of the second press-fitting portion 10 is pressed against the magnetic pole portion 8 which is the peripheral edge portion of the plate material 3 of the first press-fitting portion 12.
  • the rotor core 2 is configured by laminating the plate materials 3, there is a minute laminating gap between the laminated plate materials 3. Since the stacking gap is several ⁇ m, this is not usually a problem, but the stress balance of the plate material 3 may change due to press-fitting of the shaft or the like, and the stacking gap may expand particularly near the end of the plate material 3. The expansion of the stacking gap is noticeable at the magnetic pole portion 8 on the peripheral edge portion, and may reach several hundred ⁇ m. When an axial gap of such a size is generated in the magnetic pole portion 8, the magnetic pole portion 8 vibrates due to electromagnetic force during operation of the rotary electric machine, and the magnetic pole portions 8 collide with each other in the axial direction to generate noise. May cause you to.
  • the stress generated in the laminated plate members 3 at the end portion of the rotor core 2 is intentionally changed to generate a stress that is pressed against the magnetic pole portion 8 near the axial end portion.
  • the magnetic pole portion 8 is configured so that a stacking gap of several hundred ⁇ m level does not occur.
  • the stacking gap between the plate material 3 and the plate material 3 at the peripheral edge of the rotor core 2 is prevented from expanding without using the end plate and the rivet. Can be done.
  • the magnetic pole portion 8 on the peripheral edge of the rotor core 2 can suppress the noise of the rotating electric machine generated by vibrating due to the electromagnetic force during operation of the rotating electric machine, and can be easily manufactured at low cost.
  • the configuration of the rotor 1 of the rotary electric machine has been described by the permanent magnet embedded IPM method in which noise due to the vibration of the magnetic pole portion 8 is likely to occur, the configuration of the rotor 1 is not limited to this, and the configuration of the rotor 1 is not limited to this. Regardless of the rotor method such as the method, the sequential method, the inset method, etc., the effect can be obtained according to the configuration of each method.
  • the rotor 1 of the rotary electric machine according to the first embodiment which comprises a step of press-fitting the shaft 4 from the side of the first press-fitting portion 12 into the first press-fitting portion 12 and the second press-fitting portion 10. Can be manufactured.
  • steps (1) and (2) does not matter. Further, steps (1), (2), and (3) may be performed at the same time. For example, after laminating the first plate material, the second plate material may be laminated on the first plate material. Further, after laminating the second plate material, the first plate material may be laminated on the second plate material. Steps (1), (2), and (3) are for preparing the rotor core 2, and step (4) is for press-fitting the shaft 4 into the rotor core 2 as shown in FIG.
  • the rotor 1 of the rotary electric machine of the first embodiment is prevented from expanding the stacking gap between the plate material 3 and the plate material 3 at the peripheral edge of the rotor core 2 without using the end plate and the rivet. Can be done.
  • the magnetic pole portion 8 on the peripheral edge of the rotor core 2 can suppress the noise of the rotating electric machine generated by the vibration caused by the electromagnetic force during the operation of the rotating electric machine, and the process of assembling the end plate and the rivet is unnecessary. It can be easy and low cost.
  • FIG. 4 is a cross-sectional view showing a rotor 1 of the rotary electric machine according to the second embodiment.
  • FIG. 5 is a cross-sectional view showing a press-fitting direction of the shaft 4 of the rotor core 2 of the rotary electric machine according to the second embodiment.
  • FIG. 6 is a cross-sectional view showing deformation of the plate material 3 of the first press-fitting portion 12 and the second press-fitting portion 10 of the rotor core 2 of the rotary electric machine according to the second embodiment.
  • FIG. 7 is a cross-sectional view showing deformation of the plate material 3 of the first press-fitting portion 12 and the non-press-fitting portion 11 of the rotor core 2 of the rotary electric machine according to the second embodiment.
  • the rotor 1 of the rotary electric machine according to the second embodiment has a concave portion formed on one surface and a convex portion formed on the other surface of a ring-shaped plate material 3 made of a magnetic material, which constitutes a rotor core. It is different from the rotor 1 of the rotary electric machine according to the first embodiment in that the concave portions and the convex portions of the plate materials adjacent to each other are fitted and fixed.
  • the rotor core 2 of FIGS. 4 to 7 is fixed by fitting the concave portion and the convex portion of the plate material 3.
  • the fitting and fixing of the concave portion and the convex portion is referred to as being fixed by caulking.
  • Pull-out caulking is a technique used for laminating and fixing flat plates, which is sometimes called dowel caulking, protrusion caulking, round caulking, or V caulking.
  • it is a technique in which a small-diameter cylindrical shape is punched into the plate material 3 by a press, and concave portions and convex portions of the plate materials adjacent to each other are fitted and fixed.
  • the dowels or protrusions may have a rounded-tipped columnar shape, a conical shape, a polygonal columnar shape, a rounded polygonal columnar shape, or a polygonal pyramid shape instead of a cylindrical shape. Further, the dowel or the protrusion may have an elliptical or rectangular cross section. The dowels or protrusions may be added by a method other than pressing, such as casting, forging, welding, and cutting.
  • FIGS. 4 to 7 show how the plate members 3 are laminated and fixed by crimping. It should be noted that the uppermost plate material 3 of FIGS. 4 to 6 does not have a convex portion, and the concave portion is a through hole.
  • the rotor core 2 is configured by laminating the plate material 3 by crimping, there is a minute laminating gap between the laminated plate materials 3. Since the stacking gap is several ⁇ m, this is not usually a problem, but the stress balance of the plate material 3 may change due to press fitting of the shaft 4 or the like, and the stacking gap may expand particularly in the vicinity of the peripheral portion of the plate material 3. The expansion of the stacking gap is noticeable at the magnetic pole portion 8 on the outer diameter side, and may be several hundred ⁇ m. Since there is a crimping position 7 on the inner diameter side, it is also one of the factors that the outer diameter side is deformed so as to open with this as a fulcrum.
  • the magnetic pole portion 8 vibrates due to electromagnetic force during operation of the rotary electric machine, and the magnetic pole portions 8 collide with each other in the axial direction to generate noise. May cause you to.
  • the stress generated in the stacked cores at the peripheral edge of the rotor core 2 is intentionally changed to generate a stress that is pressed against the magnetic pole 8 near the axial end, and the magnetic poles are generated.
  • the portion 8 is configured so that a stacking gap of several hundred ⁇ m level does not occur.
  • the rotor 1 of the rotary electric machine according to the second embodiment has an axial section on the inner peripheral surface opposite to the second press-fitting portion 10 and adjacent to the first press-fitting portion 12, and is a shaft. It has a non-press-fitted portion 11 having an inner diameter larger than the outer diameter of 4.
  • FIG. 5 is a diagram showing a press-fitting direction of the shaft 4 into the rotor core 2, and is press-fitted in the direction of the arrow in the figure.
  • the plate material 3 of the second embodiment is made of an electromagnetic steel plate having a plate thickness of 0.5 mm.
  • the plate is made into a dish so that the central portion is convex in the press-fitting direction.
  • a stress that deforms like a spring is generated. This stress does not act on the plate material 3 of the non-press-fitted portion 11, and the plate material 3 of the non-press-fitted portion 11 remains flat.
  • a stress that deforms like a disc spring is generated in the plate material 3 of the first press-fitting portion 12 in the central portion in the axial direction, and as schematically shown in FIG. 7, it deforms like a disc spring rather than flat although it is minute. ..
  • the magnetic pole portion 8 of the first press-fitting portion 12 is pressed against the magnetic pole portion 8 of the non-press-fitting portion 11.
  • the rotor core 2 is fixed by press-fitting the shaft 4 in a state where the magnetic pole portions 8 of the plate material 3 are in close contact with each other.
  • the non-press-fitting portion 11 is fixed by caulking at the caulking position 7, and is fixed in a state as shown in FIG. 7 due to deformation of the portion of the first press-fitting portion 12 in contact with the shaft 4 due to press-fitting. Therefore, the peripheral edges of the plate material 3 of the first press-fitting portion 12 and the non-press-fitting portion 11 are pressed against each other, stress on the closing side acts, and it is possible to prevent the stacking gap of the peripheral edge portion of the plate material 3 from expanding.
  • FIG. 8 is a cross-sectional view showing a rotor 1 of the rotary electric machine according to the third embodiment.
  • FIG. 9 is a cross-sectional view showing a press-fitting direction of the shaft 4 of the rotor core 2 of the rotary electric machine according to the third embodiment.
  • FIG. 10 is a cross-sectional view showing a portion in which a magnet of the rotor 1 of the rotary electric machine according to the third embodiment is inserted.
  • FIG. 11 is a cross-sectional view showing deformation of the plate material 3 of the first press-fitting portion 12 and the second press-fitting portion 10 of the rotor core 2 of the rotary electric machine according to the third embodiment.
  • FIG. 12 is a cross-sectional view showing deformation of the plate material 3 of the first press-fitting portion 12 and the non-press-fitting portion 11 of the rotor core 2 of the rotary electric machine according to the third embodiment.
  • the third embodiment discloses an embodiment in which the rotor core 2 is provided with a gap 5 which is a magnet insertion hole parallel to the shaft 4, and the magnet 6 is inserted into the gap 5.
  • a permanent magnet is used as the magnet 6.
  • FIGS. 8 to 10 a plurality of gaps 5 are provided in the rotor core 2, and a plurality of magnets 6 are inserted into the respective gaps 5 to form a permanent magnet embedded type so-called IPM type rotor.
  • FIG. 9 is a diagram showing the press-fitting direction of the shaft 4 into the rotor core 2, and is press-fitted in the direction of the arrow in the figure. At this point, the magnet 6 is not inserted into the gap 5 of the rotor core 2. 8 and 10 are cross-sectional views taken in a cross section perpendicular to the shaft 4, showing a state in which the magnet 6 is inserted into the gap 5. The case where the magnet 6 is a flat rectangular parallelepiped is shown.
  • the magnet 6 By inserting the magnet 6 into the gap 5, it contributes to fixing the plate material 3 constituting the rotor core 2. This is because the insertion of the magnet 6 can prevent the magnet 6 from coming into contact with the plate material 3 and the magnetic pole portion 8 which is the peripheral portion of the plate material 3 from moving and vibrating. Further, when the magnet 6 is inserted into the gap 5, the stress on the closing side of the magnetic pole portion 8 which is the peripheral edge portion of the plate material 3 between the first press-fitting portion 12 and the second press-fitting portion 10 or the first press-fitting portion. It can also contribute to maintaining the closing side stress of the magnetic pole portion 8 which is the peripheral edge portion of the plate material 3 between the 12 and the non-press-fitting portion 11.
  • the rotor core 2 is provided with a gap 5 parallel to the shaft 4, a magnet 6 is inserted into the gap 5, and one end of the magnet 6 is a non-press-fitted portion in the radial direction of the rotor core 2. Aspects provided in the region where 11 is present are disclosed.
  • a permanent magnet is used as the magnet 6.
  • a plurality of voids 5 are provided in the rotor core 2, a plurality of magnets 6 are inserted into the respective voids 5, and the end portion of the magnet 6 is in the region of the non-press-fitted portion 11, and the permanent magnet is embedded.
  • Type A so-called IPM type rotor is configured. The magnet 6 is inserted into the gap 5 from, for example, the side of the second press-fitting portion 10.
  • the axial length of the magnet 6 is smaller than the axial length of the rotor core 2, and the size of the magnet 6 does not protrude from the rotor core 2.
  • the end face of the rotor core 2 of the magnet 6 after the magnet 6 is inserted on the non-press-fitted portion 11 side is set so as to be within the range of the axial length of the non-press-fitted portion 11. Therefore, when the magnet is fixed near the end of the rotor core where the second press-fitting portion is present, it is easy to set the magnet so that it does not protrude from the rotor core, and it is possible to obtain a rotor 1 having good assembleability and high quality.
  • the rotor core 2 is provided with a gap 5 parallel to the shaft 4, the magnet 6 is inserted into the gap 5, and the concave portion and the convex portion of the plate material 3 are provided on the axial side of the magnet 6. Aspects are disclosed.
  • a permanent magnet is used as the magnet 6.
  • the punching is used.
  • the caulking position 7 is arranged radially inside the rotor core 2 with respect to the magnet 6. This is because the magnetic pole portion 8 is formed on the radial outer side of the magnet 6, and if a caulking portion is provided in this portion, the magnetic resistance may increase and the desired characteristics may not be obtained. This is because the dimensions required for arranging the magnets cannot be secured.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
PCT/JP2019/048059 2019-12-09 2019-12-09 回転電機のロータおよび回転電機のロータの製造方法 Ceased WO2021117087A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201980102727.1A CN114788137B (zh) 2019-12-09 2019-12-09 旋转电机的转子和旋转电机的转子的制造方法
EP19955667.1A EP4075642A4 (en) 2019-12-09 2019-12-09 ROTOR OF DYNAMOELECTRIC MACHINE AND METHOD OF MANUFACTURING ROTOR OF DYNAMOELECTRIC MACHINE
PCT/JP2019/048059 WO2021117087A1 (ja) 2019-12-09 2019-12-09 回転電機のロータおよび回転電機のロータの製造方法
JP2021563452A JP7378496B2 (ja) 2019-12-09 2019-12-09 回転電機のロータおよび回転電機のロータの製造方法
US17/771,573 US12136853B2 (en) 2019-12-09 2019-12-09 Electric-rotating-machine rotor and manufacturing method therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/048059 WO2021117087A1 (ja) 2019-12-09 2019-12-09 回転電機のロータおよび回転電機のロータの製造方法

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WO2021117087A1 true WO2021117087A1 (ja) 2021-06-17

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US (1) US12136853B2 (https=)
EP (1) EP4075642A4 (https=)
JP (1) JP7378496B2 (https=)
CN (1) CN114788137B (https=)
WO (1) WO2021117087A1 (https=)

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CN115765343A (zh) * 2022-11-23 2023-03-07 兰州电机股份有限公司 一种永磁电机转子磁极的叠装装置及叠装方法

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JP2005151648A (ja) * 2003-11-12 2005-06-09 Daikin Ind Ltd モータ及びモータの製造方法並びに駆動装置、圧縮機、移動体
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