WO2024262571A1 - 磁極片モジュール、磁極片モジュールの製造方法および磁気ギアード回転機 - Google Patents

磁極片モジュール、磁極片モジュールの製造方法および磁気ギアード回転機 Download PDF

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Publication number
WO2024262571A1
WO2024262571A1 PCT/JP2024/022381 JP2024022381W WO2024262571A1 WO 2024262571 A1 WO2024262571 A1 WO 2024262571A1 JP 2024022381 W JP2024022381 W JP 2024022381W WO 2024262571 A1 WO2024262571 A1 WO 2024262571A1
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WIPO (PCT)
Prior art keywords
pole piece
piece module
positioning
pole
positioning component
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Application number
PCT/JP2024/022381
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English (en)
French (fr)
Japanese (ja)
Inventor
純香 乙坂
直央 下佐田
Original Assignee
三菱電機株式会社
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.)
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Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2025528107A priority Critical patent/JPWO2024262571A1/ja
Publication of WO2024262571A1 publication Critical patent/WO2024262571A1/ja

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H49/00—Other gearings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/02—Machines with one stator and two or more rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
    • 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
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters

Definitions

  • the present disclosure relates to a pole piece module, a method for manufacturing a pole piece module, and a magnetic-geared rotating machine.
  • magnetic gear devices of the magnetic flux modulation type that realize high torque density
  • Magnetic gear devices and wound stators have also been developed as magnetic-geared rotating machines.
  • the high-speed rotor is rotated by a stator coil placed inside, and the low-speed rotor is rotated by modulating the magnetic flux of magnets placed on the high-speed rotor with magnetic pole pieces.
  • This allows the low-speed rotor to obtain torque that is increased by the speed ratio (reduction ratio) of the high-speed rotor.
  • magnetic-geared rotating machines can realize high torque density.
  • the low-speed rotor is composed of a pole piece module with multiple pole pieces arranged at equal intervals in a circular ring shape.
  • the inner and outer diameter sides of this pole piece module face the high-speed rotor and stator, respectively, via a gap. If the radial and circumferential positional accuracy of the pole pieces is low, it is necessary to make the gap larger. If the gap becomes larger, the problem of reduced torque transmission efficiency arises.
  • the pole pieces are disposed between a cylindrical outer cover member and an inner cover member to determine the radial and circumferential positions of the pole pieces (see, for example, Patent Document 1).
  • Another pole piece module is disclosed that includes a cylindrical frame with equally spaced gaps, and the pole pieces are inserted into the gaps of the frame to determine the radial and circumferential positions of the pole pieces (see, for example, Patent Document 2).
  • the position of the pole piece is determined by positioning members such as a cover member and a frame that define the position of the pole piece. These positioning members are fixed to the shaft that supports the pole piece module using fixing members such as resin. In conventional pole piece modules, the positioning members and fixing members are made of different materials, which creates the problem of reduced joint strength due to differences in thermal expansion coefficients, etc.
  • This disclosure has been made to solve the above-mentioned problems, and aims to provide a pole piece module with high joining strength.
  • the pole piece module of the present disclosure comprises a plurality of pole pieces spaced apart in a circular ring shape, a positioning component that determines the circumferential position of the plurality of pole pieces, and a molded resin that is disposed between the plurality of spaced apart pole pieces and integrates the plurality of pole pieces and the positioning component, the positioning component being made of the same material as the molded resin.
  • the pole piece module disclosed herein has high bonding strength because the positioning components and the molded resin are made of the same material.
  • FIG. 1 is a cross-sectional view of a magnetic-geared rotating machine according to a first embodiment.
  • 1 is a cross-sectional view of a magnetic-geared rotating machine according to a first embodiment.
  • FIG. 2 is a perspective view of a pole piece module according to the first embodiment;
  • FIG. 2 is a cross-sectional view of a pole piece module according to the first embodiment.
  • FIG. 2 is a cross-sectional view of a pole piece module according to the first embodiment.
  • FIG. 2 is a cross-sectional view of a pole piece module according to the first embodiment.
  • FIG. 2 is a side view of the pole piece module according to the first embodiment.
  • FIG. 2 is a perspective view of a positioning component according to the first embodiment.
  • FIG. 2 is an enlarged perspective view of a positioning component according to the first embodiment.
  • FIG. 2 is a perspective view of a pole piece according to the first embodiment.
  • 4 is a cross-sectional view of a mold for manufacturing the pole piece module according to the first embodiment.
  • FIG. FIG. 2 is a perspective view of a bottom plate according to the first embodiment.
  • FIG. 4 is a side view of the core according to the first embodiment.
  • FIG. 2 is a side view of the outer frame according to the first embodiment.
  • 5A to 5C are diagrams for explaining a manufacturing method of the pole piece module according to the first embodiment.
  • FIG. 11 is a perspective view of a positioning component according to a third embodiment;
  • FIG. 13 is a perspective view of a positioning component according to a fourth embodiment.
  • FIG. 13 is a perspective view of a positioning component according to embodiment 5.
  • FIG. 13 is a perspective view of a positioning component according to embodiment 5.
  • 13 is a flowchart showing a process for manufacturing
  • the magnetic-geared rotating machine will be described as a magnetic speed reducer. However, the same applies if the magnetic-geared rotating machine is a magnetic speed increaser or a magnetic-geared rotating electric machine.
  • FIG. 1 is a cross-sectional view of a magnetic-geared rotating machine according to a first embodiment.
  • FIG. 1 is a cross-sectional view of a plane perpendicular to the inner rotor shaft.
  • the magnetic-geared rotating machine 10 of this embodiment has an inner rotor 1, a pole piece module 2, and an outer rotor 3.
  • the inner rotor 1 has an inner rotor shaft 11 that serves as a rotation axis, an inner rotor core 12 fixed to the outer diameter side of the inner rotor shaft 11, and a plurality of inner rotor magnets 13 arranged at equal intervals on the outer circumferential surface of the inner rotor core 12.
  • the direction parallel to the inner rotor shaft 11 is referred to as the axial direction
  • the direction perpendicular to the inner rotor shaft 11 is referred to as the radial direction
  • the direction rotating around the inner rotor shaft 11 is referred to as the circumferential direction.
  • the direction away from the inner rotor shaft 11 is referred to as the outer diameter side
  • the opposite direction is referred to as the inner diameter side.
  • the pole piece module 2 has a plurality of pole pieces 21 and a molded resin 22 for fixing the plurality of pole pieces 21.
  • the outer rotor 3 has a cylindrical outer rotor core 31 and a plurality of outer rotor magnets 32 arranged at equal intervals on the inner circumferential surface of the outer rotor core 31.
  • the inner rotor 1, the pole piece module 2, and the outer rotor 3 are arranged with gaps between them, in that order from the inner diameter side.
  • the inner rotor 1, the pole piece module 2, and the outer rotor 3 are also arranged coaxially with the inner rotor shaft 11 as the central axis.
  • the inner rotor core 12, the pole pieces 21, and the outer rotor core 31 are constructed by, for example, stacking electromagnetic steel sheets, which are magnetic materials, in the axial direction.
  • the inner rotor magnet 13 and the outer rotor magnet 32 are permanent magnets.
  • FIG. 2 is a cross-sectional view of the magnetic-geared rotating machine according to this embodiment.
  • FIG. 2 is a cross-sectional view of the position indicated by A-A in FIG. 1.
  • the pole piece module 2 is fixed at both axial ends with a non-magnetic member 23 such as resin or aluminum. This non-magnetic member 23 is fixed to an external frame (not shown) of the outer rotor 3.
  • the multiple pole pieces 21 of the pole piece module 2 transmit magnetic flux from the inner rotor 1 to the outer rotor 3, or from the outer rotor 3 to the inner rotor 1.
  • the pole pieces 21 in this embodiment are made of electromagnetic steel sheets stacked in the axial direction. As long as the pole pieces 21 are made of a magnetic material, the pole pieces 21 may be made of electromagnetic steel sheets stacked in the radial direction, or may be powdered iron cores.
  • the inner rotor shaft 11 and the inner rotor core 12 are constructed as one unit.
  • the inner rotor shaft 11 extends outward from one axial end.
  • the inner rotor 1 is disposed on the inner diameter side of the non-magnetic member 23 via a bearing 41.
  • the outer rotor shaft 33 is constructed as one unit with the outer rotor core 31 at the other axial end of the outer rotor core 31.
  • the center of rotation of the inner rotor shaft 11 and the center of rotation of the outer rotor shaft 33 are the same.
  • the outer rotor 3 is disposed on the outer diameter side of the non-magnetic member 23 via a bearing 41.
  • the number of pole pairs of the inner rotor magnet 13 of the inner rotor 1 is Nh
  • the number of poles of the pole piece of the pole piece module 2 is Np
  • the number of pole pairs of the outer rotor magnet 32 of the outer rotor 3 is Nl.
  • the reduction ratio is Gr
  • Gr Nl/Nh.
  • the rotational speed of the inner rotor 1 is multiplied by 1/Gr and transmitted to the outer rotor 3
  • the torque of the inner rotor 1 is multiplied by Gr and transmitted to the outer rotor 3.
  • magnétique-geared rotating machine of this embodiment shown in Figures 1 and 2 is a cylindrical rotating type device, but it may also be a disk rotating type, flat linear type, or cylindrical linear type device.
  • FIG. 3 is a perspective view of a pole piece module according to the present embodiment.
  • pole pieces 21 and molded resin 22 are arranged alternately in the circumferential direction.
  • Positioning components 24 are arranged on both axial ends of the pole pieces 21. The positioning components 24 will be described later.
  • FIG. 4 is a cross-sectional view of the pole piece module according to this embodiment.
  • FIG. 4 is a cross-sectional view of a plane perpendicular to the axial direction at the position indicated by B-B in FIG. 3.
  • the central part of the pole piece module according to this embodiment has pole pieces 21 and molded resin 22 arranged alternately in the circumferential direction.
  • FIG. 5 is a cross-sectional view of the pole piece module at a position intersecting the pole piece indicated by C-C in FIG. 4. However, FIG. 5 is a view immediately after molding the molded resin 22.
  • FIG. 6 is a cross-sectional view of the pole piece module at a position intersecting the molded resin indicated by D-D in FIG. 4. As shown in FIG.
  • the positioning parts 24 are arranged at both ends of the pole piece in the axial direction, and the molded resin 22 is in contact with the pole piece 21 and the positioning parts 24.
  • the molded resin 22 will be described by dividing it into a first molded resin 22a, a second molded resin 22b, and a third molded resin 22c based on the position at which the molded resin 22 is arranged.
  • a first molded resin 22a is disposed between the axial projections of the positioning components 24 described below, i.e., in the circumferential gap of the pole piece 21.
  • a second molded resin 22b is disposed on the outer diameter side of the first molded resin 22a.
  • a third molded resin 22c is disposed on the outer diameter side of the positioning components 24 disposed at both axial ends of the pole piece 21.
  • a third molded resin 22c is also disposed on both axial ends of the second molded resin 22b.
  • the inner diameter side surface and the outer diameter side surface of the pole piece 21 may or may not be in contact with the molded resin 22, and may be molded or machined to ensure the required strength.
  • the pole piece 21 and the positioning component 24 are flush with each other on the inner diameter side, i.e., if the positioning component 24 is also disposed on the inner peripheral surface of the pole piece in a cross section perpendicular to the axial direction, the molded resin does not flow between the pole piece that is located between the positioning components located on both sides in the axial direction and the center core 52, which is a mold, so that the inner peripheral surface of the pole piece module is finished with the precision of the mold, and the surface to be machined to the required dimensions can be reduced.
  • FIG. 8 is a perspective view of the positioning component according to this embodiment.
  • the positioning component 24 according to this embodiment is composed of a cylindrical main body 24a and a number of protrusions 24b protruding from one axial end of the main body 24a.
  • the protrusions 24b protrude from the main body 24a in a direction parallel to the axial direction.
  • the protrusions 24b are also arranged at equal intervals in the circumferential direction.
  • FIG. 9 is an enlarged view of the positioning component according to this embodiment. As shown in FIG. 9, the circumferential width of the protrusions 24b of the positioning component becomes smaller from the outer diameter side toward the inner diameter side.
  • the positioning component 24 is composed of a non-magnetic material.
  • the positioning component is manufactured, for example, by cutting a cylindrical material.
  • FIG. 10 is a perspective view of a pole piece according to this embodiment.
  • FIG. 10 is a view showing only the pole pieces of a pole piece module.
  • the pole piece module of this embodiment has 30 pole pieces 21. As shown in FIG. 10, the circumferential width of each pole piece 21 is smallest at the center in the radial direction and increases from the center toward the inner diameter side and the outer diameter side.
  • the pole piece module of this embodiment is composed of the pole piece 21 shown in FIG. 10, a positioning part 24 that determines the position of the pole piece 21, and molded resin that integrates the pole piece 21 and the positioning part 24.
  • Figure 11 is a cross-sectional view of a mold for manufacturing the pole piece module according to this embodiment.
  • the mold in this embodiment is composed of a disk-shaped bottom plate 51, a cylindrical core 52, and a cylindrical outer frame 53. Between the core 52 and the outer frame 53, a space is formed for arranging positioning components and pole pieces and for filling with molding resin.
  • Figure 12 is a see-through perspective view of the bottom plate 51
  • Figure 13 is a side view of the core 52
  • Figure 14 is a side view of the outer frame 53.
  • FIG. 15 is a diagram for explaining a manufacturing method of the pole piece module according to this embodiment.
  • the core 52 is placed on the upper surface of the bottom plate 51.
  • the positioning part 24 is placed on the upper surface of the bottom plate 51 along the core 52 with the protrusion 24b facing upward.
  • the pole piece 21 is placed on the positioning part 24 with the inner peripheral surface of the core 52 aligned.
  • the surface of the part of the pole piece 21 whose circumferential width increases from the center toward the inner diameter side comes into contact with the surface of the part of the protrusion 24b of the positioning part 24 whose circumferential width decreases from the outer diameter side toward the inner diameter side, thereby determining the circumferential and radial positions of the pole piece 21.
  • the positioning part 24 is placed on the pole piece 21 along the center core 52 with the protrusion 24b facing downward.
  • the surface of the part of the pole piece 21 whose circumferential width increases from the center toward the inner diameter side comes into contact with the surface of the part of the protrusion 24b of the positioning part 24 whose circumferential width decreases from the outer diameter side toward the inner diameter side, thereby determining the circumferential and radial positions of the pole piece 21.
  • the circumferential position of the pole piece 21 is determined from both axial ends by the positioning parts 24, so the pole piece 21 does not twist in the circumferential direction.
  • the outer frame 53 is placed on the upper surface of the bottom plate 51.
  • the entire mold is then heated in the state shown in Figure 15.
  • molding resin that has been vacuum degassed and heated to melt in advance is poured into the space between the center core 52 and the outer frame 53.
  • the entire mold is vacuum heated again to degas the molding resin.
  • the entire mold is cooled to harden the molding resin, and the pole piece module is removed from the mold. Finally, cutting is performed as necessary to complete the pole piece module.
  • the pole piece module manufactured in this manner has improved positional accuracy because the circumferential, radial and axial positions of the pole pieces are determined by positioning components arranged at both axial ends.
  • the materials for the outer rotor core, pole pieces and inner rotor core are composed of soft magnetic materials such as electromagnetic steel sheets, pressed iron cores, amorphous metals and permendur. However, if there are no problems with the specifications, these materials may be ferromagnetic materials such as carbon steel S45C and SS400.
  • electromagnetic steel sheets are used for the outer rotor core, pole pieces and inner rotor core, they are composed of multiple thin sheets stacked together to prevent eddy currents caused by magnetic flux changes.
  • the shape of the pole pieces according to this embodiment has the smallest circumferential width at the radial center, and increases from the center toward the inner diameter side and the outer diameter side.
  • the shape of the pole pieces is not limited to this shape.
  • the pole pieces may have a shape in which the radial center is recessed in an arc shape, or a shape in which the radial center is bulged.
  • the cross section of the pole pieces perpendicular to the axial direction may be Z-shaped or trapezoidal.
  • the pole pieces arranged in the circumferential direction do not all need to have the same shape, and pole pieces of different shapes may be arranged in the circumferential direction.
  • the positioning parts may have a shape that corresponds to the shape of the pole pieces.
  • the shape of the positioning parts may be a shape that can determine the circumferential position, radial position, and axial position of the pole pieces when the positioning parts and the pole pieces are combined.
  • the positioning parts may also be chamfered as necessary.
  • Embodiment 2 In the magnetic-geared rotating machine of the first embodiment, positioning components are disposed at both axial ends of the pole piece module. In the magnetic-geared rotating machine of the second embodiment, positioning components are disposed at only one axial end of the pole piece module.
  • the pole piece module can be manufactured by placing positioning components only at one axial end of the pole piece module, thereby reducing the number of processing steps.
  • the positioning components and the molded resin are made of the same material. Therefore, the bonding strength is not reduced due to differences in thermal expansion coefficients, resulting in a pole piece module with high bonding strength.
  • the axial length of the protrusion of the positioning component can be lengthened so that the axial end comes into contact with the bottom surface of the mold. Furthermore, by temporarily fixing part or all of the positioning component and the pole piece with an adhesive to prevent the positioning component from tilting when the pole piece is installed, it is expected that not only the axial positional accuracy but also the circumferential and radial positional accuracy can be ensured.
  • Embodiment 3 The magnetic-geared rotating machine according to the third embodiment differs from the first embodiment in the shape of the positioning components of the pole piece module.
  • FIG. 16 is a perspective view of a positioning component according to this embodiment.
  • the positioning component 24 according to this embodiment has a structure in which the protrusions 24b protrude from the main body 24a on both sides in the axial direction.
  • the circumferential width of the protrusions 24b decreases from the outer diameter side toward the inner diameter side.
  • the annular main body 24a circumferentially connects the protrusions 24b on the radially inner side of the axial center of the protrusions 24b.
  • the axial length of the annular main body 24a according to this embodiment is smaller than the axial length of the protrusions 24b.
  • the axial length of the annular main body 24a may be the same as the axial length of the protrusions 24b.
  • the positioning components and the molded resin are made of the same material. Therefore, the bonding strength is not reduced due to differences in thermal expansion coefficients, resulting in a pole piece module with high bonding strength.
  • the positioning component 24 configured in this manner can be positioned at any axial position of the pole piece module, not just at both axial ends. Even if the axial length of the pole piece is long, the pole piece can be supported by positioning this positioning component in the axial center.
  • the axial length of the main body 24a may be the same as the axial length of one of the axial protrusions 24b.
  • the positioning component 24 configured in this manner can stand on its own, improving workability during the manufacture of the pole piece module.
  • the positioning component 24 can also serve as the core 52 shown in FIG. 13 of the first embodiment.
  • the upper and lower protrusions 24b protruding from the main body 24a on both sides in the axial direction may be offset from each other in the circumferential direction with the main body 24a as the boundary.
  • the pole pieces of the pole piece module may be divided into multiple pieces in the axial direction, and the positioning component may be disposed at the axial connection parts of the divided pole pieces.
  • the pole pieces are skewed.
  • skew means that the pole pieces are positioned at an angle to the axial direction in order to improve cogging torque and torque ripple.
  • cogging torque and torque ripple can be improved.
  • Embodiment 4 The magnetic-geared rotating machine according to the fourth embodiment differs from the third embodiment in the shape of the positioning components of the pole piece module.
  • FIG. 17 is a perspective view of a positioning component according to this embodiment.
  • the positioning component 24 according to this embodiment has a structure in which the protrusions 24b protrude from the main body 24a on both sides in the axial direction.
  • the circumferential width of the protrusions 24b decreases from the outer diameter side toward the inner diameter side.
  • the annular main body 24a circumferentially connects the protrusions 24b on the radially inner side of the axial center of the protrusions 24b.
  • the longitudinal orientation of the protrusion 24b is inclined with respect to the axial direction. Therefore, the pole piece whose circumferential position, radial position, and axial position are determined by the positioning component is inclined with respect to the axial direction.
  • the pole piece module of this embodiment has skewed pole pieces. In a magnetic-geared rotating machine configured in this manner, it is possible to improve cogging torque and torque ripple.
  • the positioning components and the molded resin are made of the same material. Therefore, the bonding strength is not reduced due to differences in thermal expansion coefficients, resulting in a pole piece module with high bonding strength.
  • the magnetic-geared rotating machine with skewed pole pieces described in embodiment 3 has a so-called step-skew configuration.
  • the magnetic-geared rotating machine of this embodiment has a smoother skew, which allows for smoother improvements to cogging torque and torque ripple.
  • the pole piece positioning component is composed of a cylindrical main body 24a and a plurality of protrusions 24b protruding from one axial end of the main body 24a. That is, in the first embodiment, the positioning component is a single cylindrical component.
  • the main body of the pole piece positioning component is not cylindrical but is composed of a size corresponding to one or several pole pieces. The plurality of positioning components are then arranged in a circular ring shape.
  • FIGS. 18 and 19 are perspective views of the positioning part of the pole piece module according to this embodiment.
  • FIG. 18 is a perspective view of the positioning part 24 seen from diagonally above
  • FIG. 19 is a perspective view of the positioning part 24 seen from diagonally below.
  • the positioning part 24 of this embodiment is composed of a main body 24a for one pole of the pole piece and one protrusion 24b protruding from one axial end of the main body 24a.
  • the other axial end of the main body 24a is provided with an axially protruding mating protrusion 24c for alignment and an axially recessed mating hole 24d for alignment.
  • the mold for manufacturing the pole piece module is formed with mating holes and mating protrusions that can be mated with the mating protrusion 24c and mating hole 24d of the positioning part 24, respectively.
  • the positioning part 24 of this embodiment is aligned in a circular shape in the mold for manufacturing the pole piece module using the mating protrusion 24c for alignment and the mating hole 24d.
  • the circumferential width of the positioning parts 24 is smaller than the pole piece pitch, so the positioning parts 24 do not interfere with each other.
  • the positioning part 24 and the mold for the pole piece module are each provided with either an engagement protrusion for alignment or an engagement hole, so in the following explanation, it will be described as if the positioning part 24 is provided with an engagement protrusion for alignment and the mold for the pole piece module is provided with an engagement hole.
  • FIG. 20 is a flow chart showing the steps of manufacturing the pole piece module of this embodiment.
  • a mold for a positioning part is manufactured to mold a positioning part provided with a fitting protrusion for alignment. Also in step 1, a mold for a pole piece module is manufactured to have a fitting hole for alignment.
  • step 3 the positioning parts are aligned in a circular shape on the mold for the pole piece module by inserting the alignment fitting protrusions on the positioning parts into the alignment fitting holes on the mold for the pole piece module. At this stage, the positioning parts are aligned in the circumferential direction on the mold for the pole piece module.
  • step 4 the pole pieces are inserted between the positioning parts.
  • the pole pieces are inserted from the axial direction of the positioning parts regardless of whether or not there is step skew.
  • step 5 positioning parts are added in the axial direction and aligned in a circular ring shape, and in step 6, the pole pieces are inserted from the axial direction between the positioning parts.
  • step skew means that the pole pieces are arranged in a circumferentially shifted stepwise toward the axial direction. If there are multiple steps in the step skew, steps 5 and 6 are repeated.
  • step 6 the pole pieces are inserted from the axial direction between the positioning parts, but depending on the shape of the pole pieces, they may be inserted from the radial outside instead of from the axial direction. If step skew is not used, proceed to step 7. Next, in step 7, the molding resin is filled into the gaps in the mold and then heated and hardened. Next, in step 8, the pole piece module is removed from the mold. Finally, in step 9, the pole piece module is machined to the required dimensions using cutting or the like.
  • the pole piece module manufactured in this manner can achieve high-precision step skew even when step skew is required.
  • the pole piece module removed in process 8 is characterized by the fact that an engagement protrusion remains on the positioning component, but this can be removed in process 9.
  • This engagement protrusion can also be used as a positioning protrusion for the non-magnetic member to which the pole piece module is fixed.
  • the positioning components of the pole piece module are the size of one pole piece, but they may be the size of multiple pole pieces arranged in the circumferential direction.
  • Appendix 1 A plurality of magnetic pole pieces arranged in a spaced apart ring shape; a ring-shaped positioning component that defines the circumferential positions of the plurality of magnetic pole pieces; a molding resin disposed between the plurality of magnetic pole pieces disposed at a distance from each other and integrating the plurality of magnetic pole pieces and the positioning component; A pole piece module, characterized in that the material of the positioning component and the material of the molding resin are the same.
  • Appendix 2 The pole piece module of claim 1, wherein the positioning component is arranged at at least one axial end of a plurality of the pole pieces arranged spaced apart in a circular ring shape.
  • (Appendix 3) The pole piece module according to claim 1 or 2, characterized in that the positioning component has a circular ring-shaped main body and a plurality of protrusions protruding axially from the main body.
  • (Appendix 4) The pole piece module of claim 3, wherein the circumferential width of the protrusion decreases from the outer diameter side to the inner diameter side.
  • (Appendix 5) The pole piece module of claim 4, wherein the circumferential width of the pole piece is smallest at a radial center and increases from the radial center toward the outer diameter side and the inner diameter side.
  • a magnetic-geared rotating machine having an inner rotor, an intermediate cylindrical portion, and an outer rotor, each of which is coaxially arranged with a gap therebetween, the inner rotor has a cylindrical inner rotor core and a plurality of inner rotor magnets arranged at equal intervals on an outer circumferential surface of the inner rotor core, The outer rotor has a cylindrical outer rotor core and a plurality of outer rotor magnets arranged at equal intervals on an inner circumferential surface of the outer rotor core, 10.
  • a magnetic-geared rotating machine characterized in that the intermediate cylindrical portion is composed of a pole piece module as described in any one of appendices 1 to 9.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
PCT/JP2024/022381 2023-06-21 2024-06-20 磁極片モジュール、磁極片モジュールの製造方法および磁気ギアード回転機 WO2024262571A1 (ja)

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US20110121672A1 (en) * 2008-05-12 2011-05-26 Magnomatics Limited Magnetic pole-piece support
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