JP5981495B2 - Manufacturing method and manufacturing apparatus of embedded magnet rotor - Google Patents

Description

  The present invention relates to a manufacturing method and a manufacturing apparatus for a magnet-embedded rotor.

  As this type of technology, Patent Document 1 discloses an embedded magnet motor including a rotor in which a permanent magnet is embedded in a main body formed by stacking steel plates. Specifically, a permanent magnet hole is formed in the main body, two permanent magnets are arranged in the permanent magnet hole, and a bridge that mechanically connects both the inner and outer peripheral sides of the permanent magnet hole is provided with 2 bridges. It is arranged between two permanent magnets. According to this configuration, the permanent magnet hole can be prevented from being deformed by the action of centrifugal force.

  In the above rotor, the engaging portions formed at both ends of the bridge are respectively fitted into the fitting holes of the main body portion, thereby mechanically connecting both the inner peripheral side and the outer peripheral side of the permanent magnet hole. ing.

JP 2009-201269 A

  However, in the configuration of Patent Document 1, since there is a slight gap between the inner surface of the fitting hole and the locking portion, there remains room for the permanent magnet hole to be deformed by centrifugal force. It was.

  The objective of this invention is providing the technique which suppresses that a core deform | transforms with a centrifugal force.

  According to the first aspect of the present invention, the core has a permanent magnet housing hole, the two permanent magnets housed in the permanent magnet housing hole and arranged apart from each other in the circumferential direction, and formed in a tapered shape. A connecting member having a pair of end portions, and an inner wall-side depression that opens to the outer circumferential side and widens toward the inner circumferential side on the inner wall surface of the permanent magnet housing hole, and opens to the inner circumferential side. In addition, there is provided a method for manufacturing a magnet-embedded rotor in which an outer peripheral recess that is widened toward the outer periphery is formed, wherein one end of the connecting member is inserted into the inner peripheral recess, and the other An insertion step of inserting an end portion into the outer circumferential depression, and plastic deformation of the inner wall surface of the permanent magnet housing hole toward the inner circumferential side in the vicinity of the inner circumferential depression, or in the vicinity of the outer circumferential depression The inner wall surface of the permanent magnet housing hole at the outer peripheral side Toward comprising a plastic deformation step of plastic deformation, a, a manufacturing method of a magnet embedded rotor is provided. According to the above method, since the gap in the radial direction between the core and the connecting member disappears, the outer peripheral core portion on the outer peripheral side than the permanent magnet housing hole is deformed to the outer peripheral side by centrifugal force. Can be effectively suppressed.

  According to a second aspect of the present invention, a core having a permanent magnet accommodation hole, two permanent magnets accommodated in the permanent magnet accommodation hole and arranged apart from each other in the circumferential direction, and a tapered shape are formed. A connecting member having a pair of end portions, and an inner wall-side depression that opens to the outer circumferential side and widens toward the inner circumferential side on the inner wall surface of the permanent magnet housing hole, and opens to the inner circumferential side. In addition, an outer peripheral dent that is widened toward the outer peripheral side is formed, one end of the connecting member is inserted into the inner peripheral dent, and the other end is inserted into the outer peripheral dent, An apparatus for manufacturing a magnet-embedded rotor, wherein an inner peripheral contact body capable of contacting the inner wall surface of the permanent magnet housing hole in the vicinity of the inner peripheral recess, or the permanent in the vicinity of the outer peripheral recess. The outer peripheral contact body that can contact the inner wall surface of the magnet housing hole An operating contact body capable of taper contact with the inner peripheral contact body or the outer peripheral contact body, and after attaching the connecting member to the core, the operating contact body is connected to the inner peripheral contact body. Alternatively, the inner wall surface of the permanent magnet housing hole is plastically deformed toward the inner peripheral side in the vicinity of the inner peripheral side depression by taper contact with the outer peripheral side contact body, or in the vicinity of the outer peripheral side recess. The apparatus for manufacturing a magnet-embedded rotor that plastically deforms the inner wall surface of the permanent magnet housing hole toward the outer peripheral side is provided. According to the above configuration, since the gap in the radial direction between the core and the connecting member disappears, the outer peripheral core portion on the outer peripheral side than the permanent magnet accommodation hole is deformed to the outer peripheral side by centrifugal force. Can be effectively suppressed.

An apparatus for manufacturing a magnet-embedded rotor, comprising the inner peripheral contact body, wherein a raised portion that partially protrudes toward the inner peripheral side is formed on a contact surface of the inner peripheral contact body with respect to the core. Is provided. According to the above configuration, the fluidity of the core after the gap in the radial direction between the core and the connecting member disappears is ensured.
Provided is an apparatus for manufacturing a magnet-embedded rotor, comprising the outer peripheral contact body, wherein a protruding portion that partially protrudes toward the outer peripheral side is formed on a contact surface of the outer peripheral contact body with respect to the core. The According to the above configuration, the fluidity of the core after the gap in the radial direction between the core and the connecting member disappears is ensured.

  According to the present invention, since the gap in the radial direction between the core and the connecting member disappears, the outer peripheral core portion on the outer peripheral side than the permanent magnet accommodation hole is deformed to the outer peripheral side by centrifugal force. Can be effectively suppressed.

It is a partial top view of a rotor. It is the A section enlarged view of Drawing 1, and is a figure showing the state before rotation of a rotor. It is the A section enlarged view of Drawing 1, and is a figure showing the state after rotation of a rotor. It is a top view of the manufacturing apparatus of a rotor. It is the B section enlarged view of FIG. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 4 and shows a state before the core is crimped. It is a manufacturing flow of a rotor. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 4 and shows a state after crimping of the core. FIG. 6 is an enlarged view of part C in FIG. 5, showing a state before the core is crimped. It is the C section enlarged view of Drawing 5, and is a figure showing the state where the gap disappeared. It is the C section enlarged view of Drawing 5, and is a figure showing the state after caulking of a core.

  FIG. 1 shows a part of the rotor 1 (rotor, embedded magnet rotor). That is, the rotor 1 is generally composed of a plurality of magnetic pole portions 2, and only one magnetic pole portion 2 is shown in FIG. As shown in FIG. 1, the magnetic pole portion 2 includes a core 3 made of a laminate of electromagnetic steel plates, two permanent magnets 4, and two bridges 5 (connection members).

  The core 3 has an inner peripheral surface 3a, an outer peripheral surface 3b, and a plurality of permanent magnet accommodation holes 6. As shown in FIG. 1, one permanent magnet accommodation hole 6 is formed in one magnetic pole portion 2. The permanent magnet accommodation hole 6 is formed in a U-shape that is convex toward the inner peripheral side, and has a bridge accommodation space 7 and two magnet accommodation spaces 8. The two magnet housing spaces 8 are spaces that are separated from each other in the circumferential direction, and are elongated along the radial direction. The bridge housing space 7 is a space that connects the two magnet housing spaces 8, and connects the inner peripheral ends of the two magnet housing spaces 8.

  The inner wall surface 6a of the permanent magnet housing hole 6 is formed with two inner peripheral side recesses 9 and two outer peripheral side recesses 10. Specifically, two inner peripheral side depressions 9 are formed in the inner peripheral side inner wall surface 11 that defines the inner peripheral side of the bridge receiving space 7 in the inner wall surface 6 a of the permanent magnet receiving hole 6. Two outer circumferential depressions 10 are formed on the outer circumferential inner wall surface 12 that divides the outer circumferential side. The two inner periphery side depressions 9 and the two outer periphery side depressions 10 are formed substantially symmetrically with respect to the bridge housing space 7.

  FIG. 2 is an enlarged view of part A in FIG. As shown in FIG. 2, each outer peripheral recess 10 is formed so as to open toward the inner peripheral side and expand toward the outer peripheral side. Therefore, the core 3 has a pair of outer peripheral claw portions 13 sandwiched by one outer peripheral recess 10 and the bridge housing space 7 in the radial direction.

  Returning to FIG. 1, each inner peripheral recess 9 is formed so as to open to the outer peripheral side and expand toward the inner peripheral side. Accordingly, the core 3 has a pair of inner peripheral claw portions 14 sandwiched between one inner peripheral recess 9 and the bridge housing space 7 in the radial direction.

  The two permanent magnets 4 are accommodated in the two magnet accommodation spaces 8 of the permanent magnet accommodation holes 6, respectively. The two permanent magnets 4 are arranged so that the same poles face each other in the circumferential direction.

  The two bridges 5 connect the inner peripheral side core portion 15 and the outer peripheral side core portion 16 and are made of a nonmagnetic material such as SUS304, for example. Here, the inner peripheral side core portion 15 means a portion of the core 3 on the inner peripheral side of the permanent magnet accommodation hole 6, and the outer peripheral side core portion 16 of the core 3 is an outer periphery of the permanent magnet accommodation hole 6 than the permanent magnet accommodation hole 6. Means the side part. The outer peripheral core portion 16 is connected to the inner peripheral core portion 15 via two thin portions 17. The two thin portions 17 are portions between the two magnet housing spaces 8 and the outer peripheral surface 3b, respectively. The two thin portions 17 are formed to be as thin as possible in plan view. Therefore, when the rotor 1 rotates and a centrifugal force acts on the outer peripheral side core portion 16, the two thin portions 17 are deformed and the outer peripheral side core portion 16 is deformed to the outer peripheral side. If the outer peripheral side core portion 16 is deformed to the outer peripheral side, the outer peripheral surface 3b of the core 3 may bulge to the outer peripheral side, and the core 3 may come into contact with a stator (not shown). Therefore, the two bridges 5 are arranged on the inner peripheral side so that the outer peripheral side core portion 16 is not deformed to the outer peripheral side even if the rotor 1 rotates and centrifugal force acts on the outer peripheral side core portion 16. The core part 15 and the outer peripheral side core part 16 are connected.

  Specifically, each bridge 5 has a pair of heads 20 (ends) formed in a tapered shape and an intermediate part 21 between the pair of heads 20. And as shown in FIG.1 and FIG.2, the two heads 20 of each bridge | bridging 5 are each inserted in the inner peripheral side hollow 9 and the outer peripheral side hollow 10 which oppose in radial direction. The head 20 inserted in the inner peripheral depression 9 does not come out of the inner depression 9 even when the bridge 5 is pulled toward the outer periphery. Similarly, the head 20 inserted into the outer circumferential depression 10 does not come out of the outer circumferential depression 10 even when the bridge 5 is pulled toward the inner circumferential side. With this configuration, the two bridges 5 are arranged so that the outer core portion 16 is not deformed to the outer peripheral side even if the rotor 1 rotates and centrifugal force acts on the outer core portion 16. The circumferential core portion 15 and the circumferential core portion 16 are connected.

  However, for reasons of manufacturing cost, a radial gap g exists between the core 3 and the bridge 5 as shown in FIG. Specifically, the gap g is a radial gap between each outer peripheral claw portion 13 of the core 3 and the head portion 20 of the bridge 5. This kind of gap g is also present between each inner peripheral claw portion 14 of the core 3 and the head 20 of the bridge 5. When the rotor 1 rotates and centrifugal force acts on the outer core portion 16 due to the presence of these gaps g, the outer core portion 16 is deformed to the outer circumference side by the gap g as shown in FIG. Resulting in.

  Therefore, the present inventor has devised a technique for eliminating the gap g. Hereinafter, the present technology will be described with reference to FIGS.

  4 to 6 show a manufacturing apparatus 30 for the rotor 1. As shown in FIGS. 4 to 6, the manufacturing apparatus 30 includes a caulking jig 50 and three caulking units 36. As shown in FIG. 6, the caulking jig 50 includes an inner peripheral side restraint block 31, an outer peripheral side restraint block 32, a lower side restraint block 33, an upper first restraint block 34, and an upper second restraint block 35. .

  The inner peripheral side restraint block 31 is a block that restrains the inner peripheral surface 3a of the core 3 so that the inner peripheral surface 3a of the core 3 is not deformed to the inner peripheral side. The outer peripheral side restraint block 32 is a block that restrains the outer peripheral surface 3b of the core 3 so that the outer peripheral surface 3b of the core 3 is not deformed to the outer peripheral side. The lower restraint block 33 is a block that restrains the bottom surface 3c of the core 3 so that the bottom surface 3c of the core 3 is not deformed downward. The upper first restraining block 34 is a block that restrains the upper surface 3d of the inner peripheral core portion 15 of the core 3 so that the upper surface 3d of the inner peripheral core portion 15 of the core 3 does not deform upward. The upper second restraining block 35 is a portion that restrains the upper surface 3e of the outer peripheral core portion 16 of the core 3 so that the upper surface 3e of the outer peripheral core portion 16 of the core 3 is not deformed upward.

  As shown in FIGS. 5 and 6, each caulking unit 36 includes an inner peripheral side pressing die 37 (inner peripheral side contact body), an outer peripheral side pressing die 38 (outer peripheral side contact body), and a taper punch 39 (operational contact). Body) and an actuator 40 (driving means).

  As shown in FIG. 5, the inner circumferential side pushing die 37 includes an inner circumferential side contact surface 37 a that can contact the inner circumferential side inner wall surface 11 in the vicinity of the inner circumferential side depression 9, and a tapered inner circumferential side driven surface. 37b. The inner peripheral contact surface 37a is formed with an inner peripheral raised portion 37c (a raised portion) that partially protrudes toward the inner peripheral side.

  Similarly, the outer peripheral side pushing die 38 has an outer peripheral side contact surface 38a that can contact the outer peripheral side inner wall surface 12 in the vicinity of the outer peripheral side depression 10 and a tapered outer peripheral side driven surface 38b. The outer peripheral side contact surface 38a is formed with an outer peripheral side raised portion 38c (a raised portion) that partially protrudes toward the outer peripheral side.

  As shown in FIG. 6, the taper punch 39 includes an inner peripheral drive surface 39 a that can be brought into taper contact with an inner peripheral driven surface 37 b of the inner peripheral push die 37, and an outer peripheral cover of the outer peripheral push die 38. It has the outer peripheral side drive surface 39b which can taper-contact with the drive surface 38b.

  The actuator 40 is for driving the taper punch 39 in the axial direction. The actuator 40 may drive a plurality of taper punches 39 of the plurality of caulking units 36 simultaneously, or may drive the taper punches 39 of the plurality of caulking units 36 separately and independently.

  Next, a control flow of the manufacturing apparatus 30 will be described with reference to FIGS.

  First, the two permanent magnets 4 are inserted and attached to the two magnet housing spaces 8 of the permanent magnet housing holes 6 of the core 3 (S100). Next, the two bridges 5 are inserted and attached to the bridge accommodation space 7 of each permanent magnet accommodation hole 6 (S110). As shown in FIG. 4, the two bridges 5 are disposed between the two permanent magnets 4 in the circumferential direction. Next, the core 3 to which the plurality of permanent magnets 4 and the plurality of bridges 5 are attached is set on the crimping jig 50 (S120). Next, as shown in FIGS. 4 to 6, three caulking units 36 are set in each permanent magnet accommodation hole 6 (S130). Then, the actuator 40 is driven (S140). When the actuator 40 is driven, as shown in FIG. 8, the taper punch 39 is pushed between the inner circumferential side pushing die 37 and the outer circumferential side pushing die 38, and the inner circumferential side pushing die 37 moves toward the inner circumferential side, The side pushing die 38 moves to the outer peripheral side. When the outer peripheral side pushing die 38 moves to the outer peripheral side, as shown in FIGS. 9 and 10, the outer peripheral side inner wall surface 12 is plastically deformed toward the outer peripheral side in the vicinity of the outer peripheral side depression 10, that is, the outer peripheral claw portion 13 is The gap g between the outer peripheral claw portion 13 and the head 20 disappears due to plastic deformation toward the outer peripheral side. Similarly, when the inner circumferential side pushing die 37 moves toward the inner circumferential side, the inner circumferential side inner wall surface 11 is plastically deformed toward the inner circumferential side in the vicinity of the inner circumferential side depression 9, that is, the inner circumferential side claw portion 14 is moved into the inner circumferential side. The gap g between the inner peripheral claw portion 14 and the head 20 disappears due to plastic deformation toward the peripheral side. As the gap g disappears in this way, when the rotor 1 rotates and centrifugal force acts on the outer core portion 16, the outer core portion 16 is effectively prevented from being deformed to the outer periphery side. can do.

  When the taper punch 39 is further pushed between the inner circumferential side pushing die 37 and the outer circumferential side pushing die 38, as shown in FIG. 11, the outer circumferential side claw portion 13 is located on the intermediate portion 21 side along the outer circumferential side raised portion 38c. Will flow. Similarly, the inner periphery side nail | claw part 14 flows to the intermediate part 21 side along the inner periphery side protruding part 37c. Accordingly, even if there is a variation between the plurality of gaps g in the magnetic pole portion 2, the variation avoids the flow of the outer peripheral claw portion 13 that avoids the outer peripheral bulge portion 38c and the inner peripheral bulge portion 37c. The inner peripheral side claw portion 14 is substantially absorbed by the flow. Furthermore, the variation in which the gap g is different among a plurality of electromagnetic steel sheets is substantially absorbed by the flow. Therefore, the maximum driving force of the actuator 40 required to eliminate all the gaps g can be kept low.

  Further, since the taper punch 39 is in taper contact with the inner peripheral side pressing die 37 and the outer peripheral side pressing die 38, after the caulking is completed, the taper punch 39 is inserted between the inner peripheral side pressing die 37 and the outer peripheral side pressing die 38. It can be easily pulled out.

  As mentioned above, although embodiment of this invention was described, the said embodiment has the following characteristics.

(1) The rotor 1 (embedded magnet rotor) includes a core 3 having a permanent magnet housing hole 6, two permanent magnets 4 housed in the permanent magnet housing hole 6 and arranged apart from each other in the circumferential direction, A bridge 5 (connecting member) having a pair of heads 20 (ends) formed in a tapered shape. The inner wall surface 6a of the permanent magnet housing hole 6 has an inner peripheral recess 9 that opens to the outer periphery and widens toward the inner periphery, and an outer recess that opens to the inner periphery and expands toward the outer periphery. 10 is formed. The rotor 1 is manufactured by inserting one head portion 20 of the bridge 5 into the inner peripheral recess 9 and inserting the other head portion 20 into the outer peripheral recess 10 (S110), and the inner peripheral recess. 9, the inner peripheral side inner wall surface 11 of the inner wall surface 6 a of the permanent magnet receiving hole 6 is plastically deformed toward the inner peripheral side, and the outer periphery of the inner wall surface 6 a of the permanent magnet receiving hole 6 in the vicinity of the outer peripheral side recess 10. A plastic deformation step (S140) of plastically deforming the side inner wall surface 12 toward the outer peripheral side. According to the above method, since the gap g in the radial direction between the core 3 and the bridge 5 disappears, the outer peripheral core portion 16 on the outer peripheral side than the permanent magnet housing hole 6 is deformed to the outer peripheral side by centrifugal force. Can be effectively suppressed.

  In the above embodiment, the inner peripheral side inner wall surface 11 of the inner wall surface 6 a of the permanent magnet housing hole 6 is plastically deformed toward the inner peripheral side in the vicinity of the inner peripheral side recess 9, and in the vicinity of the outer peripheral side recess 10. Although the outer peripheral side inner wall surface 12 of the inner wall surface 6a of the permanent magnet housing hole 6 is plastically deformed toward the outer peripheral side, only one plastic deformation may be used instead. Even in this case, it is possible to effectively suppress the outer peripheral core portion 16 from being deformed to the outer peripheral side by centrifugal force.

  Further, when the inner peripheral side inner wall surface 11 of the inner wall surface 6a of the permanent magnet housing hole 6 is plastically deformed toward the inner peripheral side in the vicinity of the inner peripheral side depression 9, the inner peripheral side inner wall surface at two positions sandwiching the bridge 5 11 may be plastically deformed, or the inner peripheral side inner wall surface 11 may be plastically deformed at any one of the two positions sandwiching the bridge 5. Similarly, when the outer peripheral side inner wall surface 12 of the inner wall surface 6 a of the permanent magnet housing hole 6 is plastically deformed toward the outer peripheral side in the vicinity of the outer peripheral side recess 10, the outer peripheral side inner wall surface 12 is plasticized at two positions sandwiching the bridge 5. The outer peripheral side inner wall surface 12 may be plastically deformed at only one of the two positions sandwiching the bridge 5. In any case, it is possible to effectively suppress the outer peripheral side core portion 16 from being deformed to the outer peripheral side by centrifugal force.

(2) The rotor 1 manufacturing apparatus 30 includes an inner peripheral pushing die 37 (inner peripheral contact) that can contact the inner peripheral wall 11 of the inner wall 6a of the permanent magnet housing hole 6 in the vicinity of the inner recess 9. Body) and an outer peripheral side pressing die 38 (outer peripheral side contact body) that can contact the inner wall surface 6a of the permanent magnet housing hole 6 in the vicinity of the outer peripheral side depression 10, an inner peripheral side pressing die 37, and an outer peripheral side pressing die 38. And a taper punch 39 (actuating contact body) capable of taper contact. After the bridge 5 is attached to the core 3, the manufacturing apparatus 30 causes the taper punch 39 to be in taper contact with the inner peripheral side pressing die 37 and the outer peripheral side pressing die 38 to accommodate the permanent magnet in the vicinity of the inner peripheral side depression 9. The inner peripheral wall surface 11 of the inner wall surface 6 a of the hole 6 is plastically deformed toward the inner peripheral side, and the outer peripheral inner wall surface 12 of the inner wall surface 6 a of the permanent magnet housing hole 6 is disposed on the outer peripheral side in the vicinity of the outer peripheral recess 10. Plastic deformation toward According to the above configuration, since the gap g in the radial direction between the core 3 and the bridge 5 disappears, the outer peripheral core portion 16 on the outer peripheral side of the permanent magnet housing hole 6 is deformed to the outer peripheral side by centrifugal force. Can be effectively suppressed.

  In the above-described embodiment, both the inner circumferential side pushing die 37 and the outer circumferential side pushing die 38 are provided. However, instead of this, only one of them may be provided. Even in this case, since the gap g in the radial direction between the core 3 and the bridge 5 disappears, the outer peripheral core portion 16 on the outer peripheral side of the permanent magnet housing hole 6 is deformed to the outer peripheral side by centrifugal force. It can be effectively suppressed.

(3) The manufacturing apparatus 30 includes an inner peripheral side pushing die 37. On the inner peripheral side contact surface 37a (contact surface) with respect to the core 3 of the inner peripheral side pushing die 37, an inner peripheral side raised portion 37c (a raised portion) that partially protrudes toward the inner peripheral side is formed. According to the above configuration, the fluidity of the core 3 after the gap g in the radial direction between the core 3 and the bridge 5 disappears is ensured.

(4) The manufacturing apparatus 30 includes an outer peripheral side pushing die 38. On the outer peripheral side contact surface 38a (contact surface) with respect to the core 3 of the outer peripheral side pushing die 38, an outer peripheral side raised portion 38c (a raised portion) that partially protrudes toward the outer peripheral side is formed. According to the above configuration, the fluidity of the core 3 after the gap g in the radial direction between the core 3 and the bridge 5 disappears is ensured.

  The preferred embodiment of the present invention has been described above, but the above embodiment can be modified as follows.

  In the above embodiment, the magnetic pole portion 2 includes the two bridges 5. However, instead of this, only one bridge 5 may be included, or three or more bridges 5 may be included. .

DESCRIPTION OF SYMBOLS 1 Rotor 2 Magnetic pole part 3 Core 4 Permanent magnet 5 Bridge 6 Permanent magnet accommodation hole 6a Inner wall surface 9 Inner circumference side depression 10 Outer circumference side depression 15 Inner circumference side core part 16 Outer circumference side core part 20 Head 21 Intermediate part g Crevice 30 Manufacture apparatus

Claims (4)

A core having a permanent magnet accommodation hole;
Two permanent magnets housed in the permanent magnet housing holes and spaced apart from each other in the circumferential direction;
A connecting member having a pair of end portions formed in a tapered shape;
With
The inner wall surface of the permanent magnet housing hole is formed with an inner peripheral dent that opens to the outer peripheral side and widens toward the inner peripheral side, and an outer peripheral dent that opens to the inner peripheral side and expands toward the outer peripheral side. Being
A method for manufacturing a magnet-embedded rotor, comprising:
An insertion step of inserting one end of the connecting member into the inner circumferential recess and inserting the other end into the outer recess;
The inner wall surface of the permanent magnet housing hole is plastically deformed toward the inner circumferential side in the vicinity of the inner circumferential recess, or the inner wall surface of the permanent magnet housing hole is disposed on the outer circumferential side in the vicinity of the outer circumferential recess. A plastic deformation step for plastic deformation toward
including,
Manufacturing method of magnet embedded rotor. A core having a permanent magnet accommodation hole;
Two permanent magnets housed in the permanent magnet housing holes and spaced apart from each other in the circumferential direction;
A connecting member having a pair of end portions formed in a tapered shape;
With
The inner wall surface of the permanent magnet housing hole is formed with an inner peripheral dent that opens to the outer peripheral side and widens toward the inner peripheral side, and an outer peripheral dent that opens to the inner peripheral side and expands toward the outer peripheral side. Has been
One end of the connecting member is inserted into the inner circumferential depression, and the other end is inserted into the outer circumferential depression.
An apparatus for manufacturing an embedded magnet rotor,
An inner peripheral contact body that can contact the inner wall surface of the permanent magnet housing hole in the vicinity of the inner peripheral recess, or an outer periphery that can contact the inner wall surface of the permanent magnet housing hole in the vicinity of the outer peripheral recess. A side contact,
An actuating contact that is capable of taper contact with the inner peripheral contact or the outer peripheral contact
With
After the coupling member is attached to the core, the working contact body is brought into taper contact with the inner peripheral contact body or the outer peripheral contact body, and the permanent magnet housing hole is formed in the vicinity of the inner peripheral recess. The inner wall surface is plastically deformed toward the inner peripheral side, or the inner wall surface of the permanent magnet housing hole is plastically deformed toward the outer peripheral side in the vicinity of the outer peripheral side depression.
Manufacturing equipment for embedded magnet rotors. An apparatus for manufacturing a magnet-embedded rotor according to claim 2,
Comprising the inner peripheral contact body,
On the contact surface of the inner peripheral contact body with respect to the core, a raised portion that is partially raised toward the inner peripheral side is formed.
Manufacturing equipment for embedded magnet rotors. An apparatus for manufacturing a magnet-embedded rotor according to claim 2,
Comprising the outer peripheral contact body,
The contact surface of the outer peripheral side contact body with respect to the core is formed with a raised portion that partially protrudes toward the outer peripheral side.
Manufacturing equipment for embedded magnet rotors.

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