JP2007053870A - Rotary machine and manufacturing method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary machine wherein the side faces of all adjoining segment magnets can be joined with each other when they are fixed on a rotor and a manufacturing method for the rotary machine. <P>SOLUTION: Multiple segment magnets 21 are disposed substantially in parallel with the axis of the rotor 13. The individual segment magnets 21 are swirled until the side faces 21C of adjoining segment magnets 21 are joined with each other. Thus, any variation in the average width size of segment magnets 21 from different lots can be absorbed by changing the swirling angle of the segment magnets 21. According to the invention, as mentioned above, the side faces 21C of all the adjoining segment magnets 21 can be joined with each other and fixed on the rotor 13 even when there is any variation in the average width size of segment magnets 21 from different lots. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a rotating machine having a plurality of segment magnets on the outer peripheral surface of a rotor and a method for manufacturing the same.

2. Description of the Related Art Conventionally, as this type of rotating machine, one in which a plurality of segment magnets extending in parallel with the axial direction of the rotor are attached at intervals in the circumferential direction of the rotor is known (for example, see Patent Document 1). Conventionally, the segment magnet is gripped in the width direction by the chuck provided in the rotating machine assembling apparatus, and the center of the segment magnet in the width direction is positioned at a position where the rotor is equally divided in the circumferential direction. It was fixed to the outer peripheral surface of the rotor (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 11-136886 (paragraph [0005], FIG. 1)

  By the way, when a motor is manufactured by a conventional manufacturing method, a space between adjacent segment magnets is indispensable in order to avoid interference between the chuck that grips the segment magnets in the width direction and the adjacent segment magnets. Met. On the other hand, in order to increase the output torque of the rotating machine as a motor or to increase the power generation efficiency of the rotating machine as a generator, it is preferable to join adjacent segment magnets.

  Therefore, for example, a method of joining adjacent segment magnets by changing the gripping direction of the segment magnets by the chuck from the width direction to the longitudinal direction is conceivable. However, when the segment magnets of a conventional rotating machine are simply widened and adjacent segment magnets are joined together, the following problems have occurred.

  That is, generally, segment magnets are produced in lots, and segment magnets of the same lot are used as the plurality of segment magnets for each rotor. Here, although the variation in the width dimension of the segment magnets is relatively small among the segment magnets of the same lot, the average width dimension of the segment magnets in each lot is relatively large and varied between different lots. For this reason, when a segment magnet of a lot with a relatively large average width dimension is assembled to the rotor, the inner diameter of the cylindrical body formed by joining the segment magnets becomes larger than the outer diameter of the rotor, and the segment magnet becomes the outer periphery of the rotor. It can happen that it cannot be fixed because it floats from the surface. On the other hand, when a lot of segment magnets with relatively small average width dimensions are assembled to the rotor, the inner diameter of the cylindrical body formed by joining the segment magnets becomes smaller than the outer diameter of the rotor, As a result, there were portions where adjacent segment magnets were joined together and portions where the segment magnets were not joined.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a rotating machine that can be fixed to a rotor in a state in which the side surfaces of all adjacent segment magnets are joined to each other, and a manufacturing method thereof. .

  In order to achieve the above object, a method of manufacturing a rotating machine according to the invention of claim 1 is a method of manufacturing a rotating machine including a plurality of segment magnets on the outer peripheral surface of the rotor. A magnet placement step in which a space is provided between adjacent segment magnets that are substantially parallel to the axial direction and are arranged evenly on the outer peripheral surface of the rotor, and the segment magnets are joined until the side surfaces of the adjacent segment magnets are joined together. It is characterized in that it performs a magnet turning step of turning and fixing in a state inclined with respect to the axial direction of the rotor.

  The invention of claim 2 is the method of manufacturing a rotating machine according to claim 1, wherein the plurality of segment magnets are formed so as to be substantially parallelograms when viewed from a direction orthogonal to the axial direction of the rotor, It is characterized in that the end surfaces of the segment magnets are flush with each other in the magnet turning process.

  The invention of claim 3 is characterized in that, in the method of manufacturing a rotating machine according to claim 2, in the magnet turning step, the segment magnet is turned around the intersection of the diagonal lines of the substantially parallelogram in the segment magnet. Have.

  According to a fourth aspect of the present invention, in the method of manufacturing a rotating machine according to any one of the first to third aspects, a rotor rotational positioning jig capable of positioning control of the rotational position of the rotor and a segment magnet are gripped in the width direction. And a magnet gripping jig capable of centering in the width direction, and applying an adhesive to at least one of the segment magnets or the rotor. By rotating the rotor intermittently, the magnet mounting positions that equally divide the outer peripheral surface of the rotor are sequentially positioned at the reference position set in the rotor rotation positioning jig, and each of these magnet mounting positions is the reference position. It is characterized in that the segment magnet gripped by the magnet gripping jig is positioned at the reference position at the reference position, and the segment magnet is attached to the rotor. .

  The rotating machine according to the invention of claim 5 is characterized in that a plurality of segment magnets provided on the outer peripheral surface of the rotor are inclined with respect to the axial direction of the rotor.

  The rotating machine according to the invention of claim 6 is characterized in that, in the rotating machine of claim 5, the side surfaces of adjacent segment magnets are joined together.

  The invention of claim 7 is the rotating machine according to claim 5 or 6, wherein the plurality of segment magnets are formed so as to be substantially parallelograms when viewed from a direction orthogonal to the axial direction of the rotor. It is characterized in that the end surfaces of the segment magnets are flush with each other.

  In the rotating machine manufacturing method according to the first aspect, in the magnet arranging step, the plurality of segment magnets are arranged uniformly on the outer peripheral surface of the rotor so as to be substantially parallel to the axial direction of the rotor. At this time, since a space is provided between adjacent segment magnets, even when segment magnets of a lot having a relatively large average width dimension are used, interference between the segment magnets can be avoided. Moreover, in a magnet turning process, each segment magnet is turned until the side surfaces of the adjacent segment magnets join. Here, when a segment magnet of a lot having a relatively small average width dimension is used, the side surfaces of all adjacent segment magnets can be joined by turning each segment magnet relatively large. . On the other hand, when a segment magnet of a lot having a relatively large average width dimension is used, the side surfaces of all adjacent segment magnets can be joined by turning each segment magnet relatively small.

  That is, according to the present invention, the variation in the average width dimension of the segment magnets between different lots can be absorbed by changing the turning angle of the segment magnets, and the side surfaces of all adjacent segment magnets are joined together. In this state, it can be fixed to the rotor. In addition, since the segment magnets of the same lot are all joined on the outer peripheral surface of the rotor, the segment magnets can be positioned with respect to each other, and the plurality of segment magnets can be fixed at positions where the rotor is evenly distributed in the circumferential direction. it can.

  Here, if a plurality of segment magnets are formed in a substantially parallelogram, the end surfaces of the segment magnets can be flush with each other after the segment magnets are turned (invention of claim 2). Further, if the end surfaces of the segment magnets are flush with each other, the cylindrical body composed of the segment magnets is effectively used up to both ends, and the output torque, power generation efficiency, etc. of the rotating machine are improved (invention of claim 7). . Furthermore, in the rotating machine manufacturing method according to claim 3, in the magnet turning step, the segment magnet is turned around the intersection of the diagonal lines of the substantially parallelogram in the segment magnet, so that the segment magnet is placed on the outer peripheral surface of the rotor. The side surfaces of the segment magnets can be joined to each other while the state of being evenly arranged is reliably maintained.

  In the rotating machine manufacturing method according to the present invention, in the magnet placement step, a space is provided between the adjacent segment magnets so that the space is placed on the outer peripheral surface of the rotor. It is possible to use a magnet gripping jig capable of gripping in the width direction and centering in the width direction. In the method for manufacturing a rotating machine according to claim 4, a magnet gripping jig and a rotor rotational positioning jig capable of controlling the rotational position of the rotor are prepared, and the rotor rotational positioning jig is used to prepare the rotor. Are rotated intermittently, and the center in the width direction of the segment magnet gripped by the magnet gripping jig can be positioned and attached to a plurality of magnet mounting positions equally dividing the outer peripheral surface of the rotor. Thereby, compared with the case where a magnet arrangement | positioning process is performed manually, a segment magnet can be arrange | positioned equally on the outer peripheral surface of a rotor correctly.

  In addition, as a result of performing the manufacturing method of the rotating machine of Claims 1-4 mentioned above, like the rotating machine of Claim 5, the several segment magnet with which the outer peripheral surface of the rotor was equipped is with respect to the axial direction of a rotor. It becomes an inclined structure, and the effect of skew can be obtained. Moreover, as a result of performing the manufacturing method of the rotating machine of Claims 1-4 mentioned above, as in the rotating machine of Claim 6, the side surfaces of the adjacent segment magnets are joined together, and the output torque of the rotating machine is improved. .

[First Embodiment]
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. The motor 10 (corresponding to the “rotor” of the present invention) of this embodiment is, for example, a brushless motor, and includes a stator 12 inside a cylindrical case 11 so that the rotor 13 can rotate inside the stator 12. I have. The stator 12 includes a stator core 14 and a plurality of coils 15. A plurality of teeth 16 protrudes inward from the inner surface of the stator core 14, and the tips of the teeth 16 spread in a dovetail shape. A coil 15 is formed by winding an electric wire around each tooth 16, and a part of each coil 15 is accommodated in a slot 17 between adjacent teeth 16, 16.

  As shown in FIG. 2, the rotor 13 has a cylindrical shape and is provided with a plurality of segment magnets 21 fixed to the outer peripheral surface 13A. The plurality of segment magnets 21 are substantially parallelograms when viewed from a direction orthogonal to the axial direction CL1 of the rotor 13, and all the segment magnets 21 have the same shape and the same dimensions in design. The side surfaces 21C and 21C of all the adjacent segment magnets 21 and 21 are joined in surface contact with each other, and the end surfaces 21D of the segment magnets 21 are flush with each other. A cylindrical body 22 is configured. The cylindrical body 22 is designed so as to surround the outer side of the rotor 13 and to have an adhesive clearance between the outer peripheral surface 13 </ b> A of the rotor 13.

  The configuration of the motor 10 according to the present embodiment is as described above. Next, a method for manufacturing the motor 10 will be described. First, the segment magnet 21 is produced in lots. Specifically, the magnetic powder is filled in a molding die having a molding part for a plurality of segment magnets 21 and heated and sintered in a pressurized state. During this sintering, magnetic powder is sintered by allowing magnetic flux to penetrate the entire mold. Thereby, the segment magnet 21 oriented in the thickness direction is sintered. Then, the segment magnets 21 are taken out from the mold and fixed to a jig, and the side surfaces 21C of the segment magnets 21 are ground (or cut) by, for example, an NC grinding device (or NC cutting device) to design. To fit within the dimensional tolerances. When the lot is switched, the above operation is repeated.

  Here, if the lots are different, for example, the pressure and heating temperature at the time of sintering are different, and the material characteristics (for example, hardness) of the segment magnet 21 change. Further, the degree of wear of the tool portion in the NC grinding device (or NC cutting device) can be changed. As a result, in the dimension tolerance of the width dimension of the segment magnet 21, a lot in which the average width dimension of the segment magnet 21 has a value close to the upper limit and a lot in which the value has a value close to the lower limit can occur. On the other hand, since the material characteristics of the segment magnet 21 and the wear degree of the tool portion in the NC grinding machine are substantially the same between the same lots, the variation in the width dimension between the segment magnets 21 in the same lot is suppressed to a small value. It is done. Therefore, a plurality of segment magnets 21 of the same lot are prepared for one rotor 13. And the thermosetting adhesive agent is apply | coated to the inner surface 21B of these segment magnets 21, and the magnet arrangement | positioning process described below is performed.

  In the magnet placement process, the automatic magnet placement system 39 shown in FIG. 3 is used. The automatic magnet placement system 39 includes a rotor rotation positioning jig 40, a magnet gripping jig 51, a work feeder (not shown), and a control device (not shown). The rotor rotation positioning jig 40 fixes, for example, a reduction gear 42 to a support body 41 and connects a rotor support shaft 43 to an output rotation shaft of the reduction gear 42, while a servo motor 44 is connected to an input shaft of the reduction gear 42. It has a connected structure. Then, the rotor 13 in a state before the segment magnet 21 is attached is fitted and fixed to the outside of the rotor support shaft 43. Further, in the rotor rotation positioning jig 40, the position of the uppermost portion in the vertical direction of the rotor 13 fixed to the rotor support shaft 43 is the reference position P according to the present invention. In other words, the position of the line of intersection between the imaginary vertical plane including the rotation axis of the rotor support shaft 43 and the outer peripheral surface 13A of the rotor 13 is the reference position P according to the present invention.

  The magnet gripping jig 51 is assembled, for example, at the tip of an industrial robot (not shown). The magnet gripping jig 51 includes a pair of gripping claws 52, 52 that are opposed to each other and vertically downward. For example, the gripping claws 52 and 52 can be opened and closed by using any one of compressed air, solenoid, coil spring, and the like as a power source, and the segment magnet 21 can be gripped between the gripping claws 52 and 52. In the magnet gripping jig 51, the position of the line of intersection between the vertical surface parallel to the inner surfaces 52A and 52A of both gripping claws 52 and 52 and the same distance from the inner surfaces 52A and 52A and the inner surface 21B of the segment magnet 21 is Tool reference position T.

  A workpiece feeder (not shown) intermittently conveys the segment magnet 21 and conveys the segment magnet 21 to a predetermined workpiece supply position. At the workpiece supply position, the segment magnet 21 is positioned in the longitudinal direction with its inner surface 21B directed vertically downward and one end surface 21D abutting against a contact reference wall (not shown) (not shown). become.

  A control device (not shown) stores a magnet arrangement process program. When the magnet arrangement process program is executed, the rotor rotation positioning jig 40 rotates the rotor 13 intermittently with a predetermined angle together with the rotor support shaft 43. The predetermined angle is set to an angle obtained by equally dividing one rotation of the rotor support shaft 43 by the number of segment magnets 21 (for example, 14). As a result, a plurality of magnet mounting positions obtained by equally dividing the outer peripheral surface 13A of the rotor 13 (14 equal parts) are sequentially positioned at the reference position P described above.

  Further, while the rotor support shaft 43 is rotationally driven by a predetermined angle, the magnet gripping jig 51 performs the following operation. That is, the industrial robot of the magnet gripping jig 51 moves the magnet gripping jig 51 to the work supply position of the work feeder, and grips the segment magnet 21 in the width direction by the magnet gripping jig 51 there. Thereby, centering of the segment magnet 21 in the width direction is performed. That is, the center of the segment magnet 21 in the width direction is positioned at the tool reference position T that is the center between the gripping claws 52 and 52 of the magnet gripping jig 51. At the workpiece supply position, the abutting reference wall (not shown) positions the segment magnet 21 in the longitudinal direction, so that the magnet gripping jig 51 always grips a certain position in the longitudinal direction of the segment magnet 21. To do.

  When the magnet gripping jig 51 grips the segment magnet 21, the industrial robot operates to align the tool reference position T in the magnet gripping jig 51 vertically above the reference position P in the rotor rotation positioning jig 40. Then, the magnet gripping jig 51 is moved vertically downward to fix the segment magnet 21 to the outer peripheral surface 13 </ b> A of the rotor 13. The magnet gripping jig 51 repeats this series of operations every time each magnet mounting position of the rotor 13 is sequentially positioned at the reference position P, and all the segment magnets 21 are evenly placed on the outer peripheral surface 13A of the rotor 13. Deploy.

  Thus, in the present embodiment, in the magnet placement step, a space is provided between the adjacent segment magnets 21, so that the magnet gripping jig 51 that grips the segment magnet 21 from the width direction can be used, Even when the segment magnets 21 having a relatively large average width are used, interference between the segment magnets 21 can be avoided.

  Next, the rotor 13 is removed from the automatic magnet arrangement system 39 described above, and the magnet turning process according to the present invention is performed. In this magnet turning process, the automatic magnet turning system 80 shown in FIG. 4 is used. The automatic magnet turning system 80 drives and controls a magnet clamping belt 81, a pair of pressing rings 82A and 82B, a linear actuator (not shown) for linearly moving the pressing rings 82A and 82B, and the linear actuator. And a control device (not shown).

  The fastening belt 81 is made of, for example, a flexible sheet metal, and is wound so as to surround the entire segment magnet 21 from the outside at a substantially central portion in the axial direction of the rotor 13. Thereby, all the segment magnets 21 are held in close contact with the outer peripheral surface 13 </ b> A of the rotor 13.

  The pressing rings 82A and 82B are fitted to both end portions of the rotor 13 and are abutted against both end portions of the entire segment magnet 21 group. A plurality of protrusions 82C are provided on the opposing surfaces of the pressing rings 82A and 82B in correspondence with the segment magnets 21, respectively. Then, on both end faces 21D and 21D of each segment magnet 21, each projection 82C is in contact with a position near the corner protruding toward each pressing ring 82A and 82B.

  A linear motion actuator (not shown) presses the pressing rings 82A and 82B so as to approach each other. Further, the linear motion actuator is an electric type, and the control device determines, for example, whether or not the drive current flowing through the linear motion actuator has become a predetermined value or more, and the drive current becomes a predetermined value or more. Until then, the pressing rings 82A and 82B are pressed by the linear actuator. Then, the segment magnets 21 are pushed by the projections 82C and 82C of the pressing rings 82A and 82B, and turn by receiving a moment force. Here, since each segment magnet 21 is fastened at its central portion by a fastening belt 81 in the longitudinal direction, the segment magnet 21 is swiveled with the central portion in the longitudinal direction as the center and in close contact with the outer peripheral surface 13A of the rotor 13. Then, as shown in FIG. 5, the side surfaces 21 </ b> C and 21 </ b> C of the segment magnets 21 and 21 that are adjacent to each other are joined, and the end surfaces 21 </ b> D of the plurality of segment magnets 21 are flush with each other.

  Here, when the segment magnets 21 of a lot having a relatively small average width dimension are used, all the adjacent segment magnets 21 can be joined by turning each segment magnet 21 relatively large. . On the other hand, when the segment magnets 21 of a lot having a relatively large average width dimension are used, all the segment magnets 21 adjacent to each other can be joined by turning each segment magnet 21 relatively small. . That is, according to the present embodiment, the variation in the average width dimension of the segment magnets 21 between different lots can be absorbed by changing the turning angle of the segment magnets 21. It becomes possible to join the side surfaces 21C.

  Even if the width dimensions of the plurality of segment magnets 21 attached to the same rotor 13 vary greatly as in different lots, according to the manufacturing method of the present embodiment, the side surfaces of the segment magnets 21 are the same. 21C can be joined together.

  As described above, when the side surfaces 21C of all adjacent segment magnets 21 are joined, the pressing resistance by the linear actuator increases, the drive current becomes a predetermined value or more, and the control device stops the linear actuator. To do. Next, in this state, for example, hot air is blown over the entire rotor 13 to cure the thermosetting adhesive, and the segment magnet 21 is fixed to the rotor 13.

  Next, the rotor 13 is removed from the automatic magnet turning system 80, and a magnetic flux directed in the radial direction of the rotor 13 is applied to the outer surface 21A of each segment magnet 21 by directing an electromagnetic coil (not shown). Is magnetized so that the polarity of the NS pole is reversed. As a result, the rotor 13 is completed, and the rotor 13 is rotatably assembled inside the previously produced stator 12 to complete the motor 10.

  Thus, according to the manufacturing method of the motor 10 according to the present embodiment, the side surfaces 21C of all the adjacent segment magnets 21 are joined regardless of variations in the average width dimension of the segment magnets 21 between different lots. Thus, it can be fixed to the rotor 13. In addition, since the segment magnets 21 of the same lot are all joined on the outer peripheral surface 13A of the rotor 13, the segment magnets 21 are positioned to each other, and the plurality of segment magnets 21 are evenly distributed in the circumferential direction. Can be fixed in position. As a result, the output of the motor 10 is improved and the cogging torque and torque ripple are improved.

  Further, since the plurality of segment magnets 21 are formed in a substantially parallelogram, the end surfaces 21D of the segment magnets 21 can be flush with each other after the segment magnets 21 are turned in the magnet turning step. Furthermore, by making the end surfaces 21D of the segment magnets 21 flush with each other, the cylindrical body 22 composed of the segment magnets 21 is effectively used up to both ends, and the output torque of the motor 10 is improved. Further, since the plurality of segment magnets 21 are inclined with respect to the axial direction of the rotor 13, a skew effect can also be obtained.

[Second Embodiment]
In the present embodiment, as shown in FIG. 6, the segment magnet 21 is attached to the rotor 13 using an automatic magnet turning system 80 </ b> X different from the first embodiment. Hereinafter, only the configuration different from that of the first embodiment will be described, and the same parts as those of the first embodiment are denoted by the same reference numerals, and redundant description will be omitted.

  The automatic magnet turning system 80X of this embodiment includes a rotor fixing jig 84 for positioning the rotor 13 and a plurality of abutting pins 83 for positioning each segment magnet 21 on the outer peripheral surface 13A of the rotor 13. I have. The rotor fixing jig 84 is fitted on the inner side of the rotor 13, and a protrusion 84 </ b> A protruding from the outer surface of the rotor fixing jig 84 is brought into contact with the end surface of the rotor 13 to center the rotor 13. Positioned and held in the direction. The abutting pins 83 are arranged in a plane orthogonal to the axial direction of the rotor 13, extend radially from the rotor 13, and have a pointed tip on the rotor 13 side. These abutting pins 83 linearly move in the radial direction of the rotor 13 and are abutted against a reference point P1 that is an intersection of diagonal lines of substantially parallelograms in each segment magnet 21. Thereby, each reference point P <b> 1 of the segment magnet 21 is positioned with respect to the rotor 13.

  According to the configuration of the present embodiment, when the pressing rings 82A and 82B are brought close to each other, each segment magnet 21 is kept immovable with respect to the rotor 13 while the reference point P1 of each segment magnet 21 is held immovable. 21 can be turned. That is, the side surfaces 21C and 21C of the segment magnets 21 and 21 adjacent to each other can be joined while the plurality of segment magnets 21 are reliably held with respect to the rotor 13.

[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various other than the following can be made without departing from the scope of the invention. It can be changed and implemented.

  (1) In each of the above embodiments, a motor is exemplified as an example of a rotating machine. However, the present invention may be applied to a rotating machine as a generator.

  (2) In each of the embodiments described above, the segment magnet 21 is formed in a substantially parallelogram shape when the outer peripheral surface 13A of the rotor 13 is viewed from the side, but may be formed in a substantially rectangular shape.

  (3) In order to improve the rotational characteristics (cogging torque, torque ripple) of the motor, the thickness of the center of the segment magnet 21 in the circumferential direction of the rotor 13 is maximized, and the thickness gradually increases toward both sides. It is preferable to make it thinner. Specifically, as shown in FIG. 7 (A), in the circumferential direction of the rotor 13 in the segment magnet 21, between the corners farthest from each other (range of W shown in FIG. 7 (A)). Assuming that the line passing through the center and facing the axial direction of the rotor 13 is the circumferential center line CL2, as shown in FIG. 7B, the circumferential center of the segment magnet 21 is used to improve the rotational characteristics of the motor. It is preferable that the thickness of the portion along the line CL2 is the largest, and the thickness of the segment magnet 21 is gradually reduced as the distance from the circumferential center line CL2 in the circumferential direction of the rotor 13 decreases. The circumferential center line CL <b> 2 can also be specified as a line that passes through the reference point P <b> 1 that is the intersection of the diagonal lines of the substantially parallelogram in the segment magnet 21 and is parallel to the axial direction of the rotor 13.

  (4) Further, instead of gradually changing the thickness of the segment magnet 21, the magnetic flux density of the segment magnet 21 is magnetized so that it gradually decreases as it moves away from the circumferential center line CL2 in the circumferential direction of the rotor 13. Also good.

Sectional drawing of the motor which concerns on 1st Embodiment of this invention. Perspective view of rotor A perspective view showing a part of a rotor rotation positioning jig and a magnet gripping jig Side view of segment magnet and rotor in magnet turning process Side view of segment magnet and rotor after magnet turning process Side view of segment magnet and rotor in magnet turning process of second embodiment (A) Side view of modified segment magnet, (B) Perspective view of segment magnet

Explanation of symbols

10 Motor (Rotating machine)
13 Rotor 21 Segment magnet 21C, 21C Side 39 Magnet automatic arrangement system 40 Rotor rotation positioning jig 51 Magnet gripping jig 82A, 82B Press ring

Claims (7)

In the manufacturing method of the rotating machine provided with a plurality of segment magnets on the outer peripheral surface of the rotor,
A magnet arrangement step of arranging the plurality of segment magnets substantially parallel to the axial direction of the rotor and equally arranging them on the outer peripheral surface of the rotor with a space between the adjacent segment magnets;
And a magnet turning step of rotating the segment magnet until the side surfaces of the adjacent segment magnets are joined to each other and fixing the magnet in an inclined state with respect to the axial direction of the rotor. Production method.   The plurality of segment magnets are formed to be substantially parallelograms when viewed from a direction orthogonal to the axial direction of the rotor, and the end surfaces of the segment magnets are flush with each other in the magnet turning step. The manufacturing method of the rotary machine of Claim 1 characterized by the above-mentioned.   3. The method for manufacturing a rotating machine according to claim 2, wherein in the magnet turning step, the segment magnet is turned around an intersection of diagonal lines of the substantially parallelogram in the segment magnets. A rotor rotation positioning jig capable of positioning and controlling the rotation position of the rotor, and a magnet holding jig capable of gripping the segment magnet in the width direction and performing centering in the width direction; Apply an adhesive to at least one of the segment magnet or the rotor,
In the magnet placement step, the rotor rotation positioning jig is used to intermittently rotate the rotor, and a plurality of magnet mounting positions obtained by equally dividing the outer peripheral surface of the rotor are set in the rotor rotation positioning jig. In addition to sequentially positioning at the reference position, each time the magnet mounting positions are sequentially positioned at the reference position, the center in the width direction of the segment magnet gripped by the magnet gripping jig is positioned at the reference position. The method of manufacturing a rotating machine according to claim 1, wherein the segment magnet is attached to the rotor.   A rotating machine, wherein a plurality of segment magnets provided on an outer peripheral surface of a rotor are inclined with respect to an axial direction of the rotor.   The rotating machine according to claim 5, wherein side surfaces of the adjacent segment magnets are joined to each other. The plurality of segment magnets are formed so as to be substantially parallelograms when viewed from a direction orthogonal to the axial direction of the rotor, and end surfaces of the plurality of segment magnets are flush with each other. The rotating machine according to 5 or 6.

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