WO2009113576A1 - 固定子コイルの製造方法 - Google Patents
固定子コイルの製造方法 Download PDFInfo
- Publication number
- WO2009113576A1 WO2009113576A1 PCT/JP2009/054667 JP2009054667W WO2009113576A1 WO 2009113576 A1 WO2009113576 A1 WO 2009113576A1 JP 2009054667 W JP2009054667 W JP 2009054667W WO 2009113576 A1 WO2009113576 A1 WO 2009113576A1
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- WIPO (PCT)
- Prior art keywords
- built
- straight
- winding
- preliminary alignment
- portions
- Prior art date
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0025—Shaping or compacting conductors or winding heads after the installation of the winding in the core or machine ; Applying fastening means on winding heads
- H02K15/0037—Shaping or compacting winding heads
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/06—Embedding prefabricated windings in machines
- H02K15/062—Windings in slots; salient pole windings
- H02K15/065—Windings consisting of complete sections, e.g. coils, waves
- H02K15/066—Windings consisting of complete sections, e.g. coils, waves inserted perpendicularly to the axis of the slots or inter-polar channels
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49009—Dynamoelectric machine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49071—Electromagnet, transformer or inductor by winding or coiling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53143—Motor or generator
Definitions
- the present invention relates to a method for manufacturing a stator coil, and more particularly to a method for manufacturing a stator coil used for a stator of a rotating electrical machine.
- a plurality of molded bodies in which a plurality of parallel straight portions are connected by a plurality of turn portions from an electric conductor wire are formed.
- these molded bodies are assembled to form an assembled body.
- Each molded body set constituting this built-in body is composed of a plurality of straight superpositions formed by superimposing a plurality of straight portions in one molded body and a plurality of straight portions in another one molded body, respectively.
- the part is provided in the longitudinal direction of the built-in body. For this reason, in this assembled body, a plurality of straight overlapping portions are arranged in parallel in the longitudinal direction of the assembled body.
- the built-in body is wound around the core member a predetermined number of times to form a wound body.
- This winding body has a plurality of straight laminated portions formed in a circumferential direction in which a plurality of straight laminated portions in one molded body set are laminated in the radial direction.
- each straight laminated portion is disposed in the slot of the stator core, and each turn portion is disposed outside the slot to form a stator coil.
- the present invention has been made in view of the above circumstances, and at the time of winding and manufacturing a stator coil formed by winding each phase winding consisting of continuous windings, at least in the straight laminated portion of the winding body. It is a technical problem to be solved to improve the alignment accuracy of each straight portion.
- the present invention made in order to solve the above problems is a method of manufacturing a stator coil in which a plurality of phase windings are wound, and a molding step of molding a plurality of molded bodies from an electric conductor wire, And a winding step of winding the built-in body around a core member to form a wound body, wherein the molded bodies extend in parallel with each other.
- Each of the molded bodies has a plurality of straight overlapping portions formed by overlapping the straight portions with each other in the longitudinal direction of the built-in body, and the winding obtained in the winding step.
- the body has a plurality of straight overlapping portions A plurality of straight laminated portions formed in the circumferential direction of the winding body, and in the winding step, adjacent to the built-in body in the course of transporting the built-in body to the core member.
- a preliminary alignment member is inserted into each of a plurality of continuous gaps.
- the preliminary alignment member is inserted into each of at least two continuous gaps, at least the straight portions in the straight overlapping portion sandwiched between the preliminary alignment members are aligned and the straight portions are aligned. It can be previously aligned in the overlapping direction.
- the wound body obtained by winding up this built-in body it is possible to improve the accuracy with which at least the straight portions of the straight laminated portion are aligned in the radial direction of the wound body.
- the straight portions overlap each other in the straight overlapping portion sandwiched between the preliminary alignment members, and the straight portions are overlapped. While being able to arrange in advance in the direction, the size of the interval between adjacent straight overlapping portions can be arranged in advance.
- the winding process is a continuous winding process in which the built-in body is wound while being continuously fed to the core member.
- the preliminary alignment member is moved in synchronization with the built-in body. It is preferable to enter and leave the gap while making the gap.
- the winding step is a winding step for each pitch in which the built-in body is wound around the core member while feeding the built-in body at an interval between the straight overlapping portions adjacent to the core member.
- a preliminary alignment member inserting step of inserting the preliminary alignment member into the gap of the stopped integrated body, and the integrated body together with the preliminary alignment member is spaced by the interval between the straight overlapping portions.
- a position holding member insertion step of inserting a position holding member into the gap other than the gap into which the preliminary alignment member of the built-in body is inserted is performed.
- a position holding member extraction step for extracting the position holding member from the gap of the assembly is performed, and the preliminary alignment member extraction step with the position holding member inserted into the gap
- the backward movement step and the preliminary alignment member insertion step are performed, and the forward movement step is performed in a state where the position holding member is removed from the gap.
- the pre-alignment member when the winding body is formed by winding at a pitch, the pre-alignment member is inserted into the gap of the built-in body to pre-align each straight portion in the straight superposed portion, and then the built-in body. Is fed into the core member by one pitch. Then, in a state where the preliminary alignment member is inserted into the gap of the built-in body, the position holding member is inserted into another gap of the built-in body. Then, with the position holding member holding the position of the assembled body, the preliminary alignment member is extracted from the integrated body, and the extracted preliminary alignment member is retracted by one pitch and inserted into the next gap. For this reason, the preliminary alignment member can be easily inserted into the next gap.
- a stator coil of the present invention at the time of winding and manufacturing a stator coil in which each phase winding made of continuous winding is wound, at least in the straight laminated portion of the winding body to improve the alignment accuracy of each straight portion, or to improve the alignment accuracy of each straight portion in the straight laminate portion of the winding body and to improve the pitch accuracy between adjacent straight laminate portions it can.
- stator coil obtained by the method for manufacturing a stator coil of the present invention is applied to a stator of a rotating electrical machine, the straight laminated portion of the winding body is reliably accommodated in each slot of the stator core. Therefore, it is possible to improve the slot occupancy rate in the stator and the output of the rotating electrical machine using the stator.
- the straight laminated portion of the winding body can be easily accommodated in each slot of the stator core, the productivity of the stator can be improved.
- FIG. 3 is an axial cross-sectional view schematically showing the configuration of the rotating electrical machine according to the first embodiment.
- FIG. 3 is a plan view of the stator according to the first embodiment.
- 3 is a plan view of a stator core according to Embodiment 1.
- FIG. 3 is a plan view of a split laminated core according to Embodiment 1.
- FIG. 3 is a cross-sectional view of windings that constitute the stator coil according to the first embodiment. It is a figure which shows the connection of the stator coil which concerns on Embodiment 1.
- FIG. FIG. 3 is a perspective view of a winding body that is a stator coil according to the first embodiment.
- FIG. 3 is a diagram schematically illustrating a method for manufacturing the stator coil according to the first embodiment.
- FIG. 4 is a diagram illustrating a method of manufacturing the stator coil according to the first embodiment and schematically illustrating operations of a preliminary alignment member and a position holding member.
- FIG. 4 is a diagram illustrating a method of manufacturing the stator coil according to the first embodiment and schematically illustrating operations of a preliminary alignment member and a position holding member.
- FIG. 5 is a side view showing the stator coil manufacturing method according to Embodiment 1 and showing the tip shapes of a preliminary alignment member and a position holding member.
- FIG. 10 is a diagram schematically showing a stator coil manufacturing method according to Embodiment 2. It is a figure which shows the manufacturing method of the stator coil which concerns on Embodiment 2, and shows the structure which moves a preliminary alignment member by a belt conveyor system with a feed roller.
- the rotating electricity 1 includes a housing 10 in which a pair of substantially bottomed cylindrical housing members 100 and 101 are joined at openings, and the housing 10 via bearings 110 and 111.
- a rotating shaft 20 rotatably supported, a rotor 2 fixed to the rotating shaft 20, and a stator 3 fixed to the housing 10 at a position surrounding the rotor 2 inside the housing 10. Yes.
- the rotor 2 is formed with a plurality of magnetic poles alternately different in the circumferential direction by permanent magnets on the outer peripheral side facing the inner peripheral side of the stator 3.
- the number of magnetic poles of the rotor 2 is not limited because it varies depending on the rotating electric machine. In this embodiment, an 8-pole rotor (N pole: 4, S pole: 4) is used.
- the stator 3 includes a stator core 30, a three-phase stator coil 4 formed of a plurality of phase windings, and between the stator core 30 and the stator coil 4. And an insulating paper 5 disposed on the surface.
- the stator core 30 has an annular shape in which a plurality of slots 31 are formed on the inner periphery.
- the plurality of slots 31 are formed such that the depth direction thereof coincides with the radial direction.
- the stator core 30 is formed by connecting a predetermined number (24 in the present embodiment) of the split cores 32 shown in FIG. 4 in the circumferential direction.
- the split core 32 has a shape in which one slot 31 is defined and one slot 31 is defined between the adjacent split cores 32 in the circumferential direction.
- the split core 32 has a pair of teeth portions 320 that extend radially inward and a back core portion 321 that connects the teeth portions 320 radially outward.
- the split core 32 constituting the stator core 30 is formed by laminating 410 electromagnetic steel hills having a thickness of 0.3 mm. An insulating thin film is disposed between the laminated electrical steel sheets.
- the split core 32 constituting the stator core 30 may be formed not only from the laminated body of electromagnetic steel sheets but also using a conventionally known metal thin plate and insulating thin film.
- the stator coil 4 is formed by winding a plurality of windings 40 by a predetermined winding method.
- the winding 40 constituting the stator coil 4 includes a copper conductor 41 and an insulating coating 42 made of an inner layer 420 and an outer layer 421 covering the outer periphery of the conductor 41 and insulating the conductor 41. And is formed from.
- the thickness of the insulating coating 42 including the inner layer 420 and the outer layer 421 is set between 100 ⁇ m and 200 ⁇ m.
- Insulating paper may be disposed between the 40 or between the stator core 30 and the stator coil 40 as shown in FIG.
- the winding 40 of the stator coil 4 is formed by covering the outer periphery of the insulating film 42 made of the inner layer 420 and the outer layer 421 with a fusion material 48 made of epoxy resin or the like. May be.
- the fusion material 48 is melted faster than the insulating film 42 by the heat generated in the rotating electrical machine 1, so that the plurality of windings 40 installed in the same slot 31 are thermally bonded by the fusion material 48.
- the plurality of windings 40 installed in the same slot 31 are integrated to form a steel body between the windings 40, so that the mechanical strength of the winding 40 in the slot 31 is improved.
- each of the stator coils 4 is formed by two three-phase windings (U1, U2, V1, V2, W1, W2).
- the stator coil 4 is formed by winding a plurality of windings 40 into a predetermined shape, as shown in FIG.
- the winding 40 constituting the stator coil 4 is formed in a shape that is wave-wound along the circumferential direction on the inner peripheral side of the stator core 30.
- the winding 40 constituting the stator coil 4 includes a linear slot accommodating portion 43 accommodated in the slot 31 of the stator core 30 and a turn portion 44 that connects the adjacent slot accommodating portions 43 to each other. ing.
- the turn portion 44 is formed so as to protrude from the end surface of the stator core 30 in the axial direction.
- the stator coil 4 is formed in a state in which both ends of the plurality of windings 40 protrude from the axial end face of the stator core 30 and the plurality of windings 40 are wound in a wave shape along the circumferential direction. .
- One phase of the stator coil 4 is formed by welding the ends of the first winding portion 40a and the second winding portion 40b together by welding. That is, one phase of the stator coil 4 is formed from one assembly formed by joining the ends of two molded bodies formed from two electric conductor wires.
- the slot accommodating portion 43 of the first winding portion 40a and the slot accommodating portion 43 of the second winding portion 40b are accommodated in the same slot 31.
- the slot accommodating portions 43 of the first winding portion 40 a and the slot accommodating portions 43 of the second winding portion 40 b are installed so as to be alternately positioned in the depth direction of the slot 31.
- winding part 40b is the slot accommodation in which the winding direction of the 1st coil
- a folded portion 46 formed by the portion 43 is formed.
- the stator coil 4 includes the first winding portion 40a having different winding directions. Six sets of the second winding portion 40b are formed, and six sets of sets are used to form a three-phase (U, V, W) ⁇ 2 (double slot) coil. In each assembly, the end on the opposite side to the end on the neutral point side (or phase terminal side) of the first winding portion 40a, and the phase terminal side (or neutral point) of the second winding portion 40b Side end) and the opposite end are connected via a slot accommodating portion 43 formed of a folded portion 46. The method of connecting the windings 40 of each phase is the same.
- stator coil 4 is manufactured as follows.
- the radial direction means the radial direction of the core member or the wound body
- the circumferential direction means the circumferential direction of the core member or the wound body
- 12 molded bodies are formed from 12 electric conductor wires.
- Each molded body to be molded here has a plurality of straight portions 431 extending in parallel with each other and arranged in parallel in the longitudinal direction of the molded body, and adjacent straight portions 431 are connected to one end side and the other end side of the straight portion 431. And a plurality of turn portions 441 that are alternately connected to each other.
- the built-in body 47 is formed by incorporating 12 molded bodies. In this built-in body 47, six sets of bodies are arranged in parallel in the longitudinal direction of the built-in body 47.
- Each assembly consists of a first wire portion that becomes the first winding portion 40a and a second wire portion that becomes the second winding portion 40b.
- the 1st line part consists of one molded object
- the 2nd line part also consists of one molded object.
- the end portion of the first line portion and the end portion of the second line portion in each assembly are welded to form a joint portion 45.
- the end portion of the first line portion and the end portion of the second line portion in each assembly may be joined, or the end portion of the first line portion and the second portion. After joining the ends of the line portions to form six sets of assemblies, these six sets of assemblies may be incorporated.
- Each assembly in the built-in body 47 includes a plurality of straight overlapping portions 471 formed by overlapping a plurality of straight portions 431 in the first line portion and a plurality of straight portions 431 in the second line portion. It is in the longitudinal direction of the built-in body 47.
- the winding body 48 is formed by winding the built-in body 47 by a predetermined number of turns (for example, 3 times) so that the folded portion 46 is positioned on the axial center side.
- the wound body 48 has a plurality of straight laminated portions 481 formed by laminating a plurality of straight overlapping portions 471 in one assembly by the number of turns in the radial direction in the circumferential direction of the wound body 48.
- the number of the straight portions 431 that is twice as many as the number of turns is overlapped and aligned in a row in the radial direction (radial direction).
- each of the straight laminated portions 481 is located in a state of being spaced apart in the circumferential direction of the winding body 48.
- the teeth part 320 of the split core 32 is inserted into the gap between the adjacent straight laminated parts 481 from the outside in the radial direction, and the adjacent split cores 32 are connected to each other. And the stator 3.
- the winding process in the stator coil manufacturing method of Embodiment 1 is a pitch-by-pitch winding process.
- the built-in body 47 is fed into the core member 6 by one pitch (interval between adjacent straight overlapping portions 471 in the built-in body 47), while the built-in body 47 is turned into a cylindrical core member. (Core metal) 6 is wound up.
- the straight portions 431 in the straight overlap portion 471 of the built-in body 47 are preliminarily aligned with each other, and adjacent straight overlaps are arranged.
- the size of the gap 472 between the mating portions 471 is aligned in advance.
- the conveyance to the core member 6 by the rotation of the core member 6 (clockwise rotation in FIG. 9) and the horizontal movement of the built-in body 47 (horizontal movement from left to right in FIG. 9) is a well-known driving device (not shown). And a control device for controlling this.
- the built-in body 47 is wound around the core member 6, for example, three times to form a wound body 48.
- the preliminary alignment device 8 includes a plurality (six in this embodiment) of preliminary alignment members 81 and a preliminary alignment member driving device 82.
- the preliminary alignment member driving device 82 moves all the preliminary alignment members 81 forward and backward simultaneously.
- a preliminary alignment member driving device may be provided for each preliminary alignment member 81, and each preliminary alignment member 81 may be moved forward and backward independently.
- the advance / retreat direction of the preliminary alignment member 81 coincides with the overlapping direction of the straight portions 431 in the straight overlapping portion 471 of the built-in body 47 conveyed to the core member 6.
- the preliminary alignment member 81 and the preliminary alignment member driving device 82 can be advanced and retracted in parallel with the conveying direction of the built-in body 47 by a horizontal driving device (not shown).
- the amount of advance (or the amount of retreat) at this time is equal to the size of the interval between adjacent straight overlapping portions 471 in the built-in body 47, that is, the size of one pitch. Further, the advancement of the preliminary alignment member 81 and the preliminary alignment member driving device 82 (movement of the built-in body 47 in the transport direction) is performed at the same speed in synchronization with the transport of the built-in body 47.
- the position holding device 9 includes a plurality (six in this embodiment) of position holding members 91 and a position holding member driving device 92.
- the position holding member driving device 92 moves all the position holding members 91 forward and backward simultaneously.
- a position holding member driving device may be provided for each position holding member 91, and each position holding member 91 may be moved forward and backward independently.
- the advancing / retreating direction of the position holding member 91 coincides with the overlapping direction of the straight portions 431 in the straight overlapping portion 471 of the built-in body 47 conveyed to the core member 6.
- the pair of upper and lower alignment plates 93 align the thickness of the built-in body 47 conveyed to the core member 6 (the thickness in the overlapping direction of the straight portion 431) in the turn portion 441.
- the preliminary alignment member 81 has a width (width in the transport direction of the built-in body 47) substantially equal to the size of the gap 472 between the adjacent straight overlapping portions 471 in the built-in body 47. For this reason, when the preliminary alignment member 81 is inserted into the gap 472 and the straight overlapping portion 471 of the built-in body 47 is sandwiched between the preliminary alignment members 81, the straight portion 431 in the straight overlapping portion 471. The straight portions 431 can be aligned in the overlapping direction by aligning the overlapping.
- the number of preliminary alignment members 81 is set to n. In some cases, the number of the preliminary alignment members 81 is more than n / 2.
- the position holding member 91 has a width slightly smaller than the width of the preliminary alignment member 81. That is, the position holding member 91 has a width slightly smaller than the size of the gap 472 in the built-in body 47. For this reason, when the position holding member 91 is inserted into the gap 472 before the preliminary alignment member 81 with respect to the assembled body 47 that has been conveyed, the insertion becomes easy.
- the tip end portion 81a of the preliminary alignment member 81 and the position holding member 91 is at the tip.
- the width becomes smaller as it goes.
- the preliminary alignment member 81 and the position holding member 91 are formed of a rectangular parallelepiped having a rectangular cross section corresponding to the shape of the gap 472 in the built-in body 47.
- a plurality of preliminary alignment members (or position holding members) having a columnar shape or the like may be employed.
- the preliminary alignment member driving device 82, the position holding member driving device 92, the horizontal driving device, the rotation driving device of the core member 6, and the conveyance driving device of the built-in body 47 are controlled by the control device, and the winding of the built-in body 47 is performed as follows. Can be taken.
- the transport drive device transports the built-in body 47 until the winding tip contacts the core member 6 (or just before contact). After the conveyance of the built-in body 47 is stopped, the position holding member 91 is inserted into the gap 472 of the built-in body 47 (state shown in FIG. 11B). Thereby, the built-in body 47 is positioned at a predetermined position.
- Preliminary alignment member insertion process The preliminary alignment member 81 is inserted into the gap 472 of the built-in body 47 held at a predetermined position by the position holding member 91 (see FIG. 11C). Thereby, on the winding front end side of the built-in body 47, the straight portions 431 in the straight overlapping portion 471 can be aligned in the radial direction, and the distance between the straight overlapping portions 471 is made uniform. Can do.
- the first alignment piece 71 as the alignment member 7 is inserted into the gap 472 at the tip of the embedded body 47 that has started to be wound around the core member 6 after the built-in body 47 has been advanced by one pitch. At this time, since the straight portions 431 are aligned in advance and the pitch is aligned by the preliminary alignment member 81, the first alignment piece 71 can be easily inserted into the gap 472.
- the preliminary alignment member 81 is inserted into another gap 472 (such as a gap next to the gap 472 into which the position holding member 91 is inserted) 472 in which the position holding member 91 is inserted in the gap 472.
- the alignment member insertion step, the position holding member extraction step, the forward movement step, the position holding member insertion step, the preliminary alignment member extraction step, and the backward movement step are repeated.
- each of the straight portions 431 in the straight overlapping portion 471 can be pre-aligned in the overlapping direction by the preliminary alignment member 81, and the size of the interval between the adjacent straight overlapping portions 471 is large. Can be prepared in advance. For this reason, in the wound body 48 obtained by winding the built-in body 47, the accuracy of aligning the respective straight portions 431 of the straight laminated portion 481 in the radial direction of the wound body 48 can be improved. The pitch accuracy between the adjacent straight laminated portions 481 can be improved.
- the position holding member 91 is always inserted into the other gap 472 so that the built-in body 47 is positioned. That is, the preliminary alignment member 81 is extracted or inserted into the built-in body 47 positioned by the position holding member 91. For this reason, the preliminary alignment member 81 can be easily inserted into the next gap 472.
- the alignment accuracy and pitch accuracy of the straight portion 43 in the built-in body 47 are previously increased by the preliminary alignment member 81, the effect of improving the alignment accuracy and pitch accuracy by the alignment member 7 can be further enhanced.
- the winding process in the method for manufacturing the stator coil according to the second embodiment shown in FIGS. 13 to 14 is a continuous winding process.
- the built-in body 47 is wound while being continuously fed to the core member 6.
- the plurality of preliminary alignment members 81 are movable in the same direction in synchronism with the conveying direction of the built-in body 47 by a belt conveyor system while being guided by a pair of feed rollers 85 by a guide member 83.
- the plurality of preliminary alignment members 81 are controlled to advance and retract with respect to the gap 472 of the built-in body 47 by the preliminary alignment member operation restriction member 84.
- the pair of feed rollers 85 are controlled by the control device together with the alignment arrow driving devices 75, the rotation driving device of the core member 6, and the conveyance driving device of the built-in body 47.
- the preliminary alignment member 81 has the same configuration as that described in the first embodiment.
- the preliminary alignment member regulating member 84 has an entry portion, an alignment portion, and a withdrawal portion.
- the preliminary alignment member regulating member 84 is an entry portion that gradually lowers the preliminary alignment member 81 in the transport direction of the built-in body 47 and gradually enters the pre-alignment member 81 into the gap 472 of the built-in body 47.
- the preliminary alignment member restricting member 84 is an alignment unit, and horizontally moves the preliminary alignment member 81 in the transport direction while keeping the preliminary alignment member 81 completely in the gap 472. Thereby, within the range of this alignment portion, the straight portions 431 in the straight overlapping portion 471 of the built-in body 47 can be aligned in the radial direction, and the distance between the straight overlapping portions 471 is made uniform. be able to.
- the preliminary alignment member 84 is a withdrawal portion, and gradually raises the preliminary alignment member 81 in the conveyance direction of the built-in body 47 to cause the pre-alignment member 81 to retreat from the gap 472 of the built-in body 47.
- the preliminary alignment member 81 is withdrawn from the gap 472
- the built-in body 47 starts to be wound around the core member 6.
- a pair of alignment arrows 74 as the alignment member 7 is inserted into the gap 472 between the straight overlapping portions 471 immediately after starting to be wound around the core member 6.
- the alignment accuracy and pitch accuracy of the straight portion 43 in the built-in body 47 are previously increased by the preliminary alignment member 81, the effect of improving the alignment accuracy and pitch accuracy by the alignment member 7 can be further enhanced.
- the first line portion is composed of a first wire portion as one formed body formed from one electric conductor wire and a second line portion as one formed body formed from one electric conductor wire.
- the second line portion may be independent from each other. Or it is good also considering what the 1st wire
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- Manufacture Of Motors, Generators (AREA)
- Windings For Motors And Generators (AREA)
Abstract
Description
30…固定子コア 31a、31b…スロット
4…固定子コイル 43…スロット収容部
47…組み込み体 48…巻き取り体
431…直状部 441…ターン部
471…直状重ね合わせ部 472…隙間
481…直状積層部 6…芯部材
81…予備整列部材 91…位置保持部材
まず、本実施形態の固定子コイルの製造方法により得られた固定子コイルを用いた回転電気1の構成について説明する。
まず、12本の電気導体線から12個の成形体を成形する。ここで成形する各成形体は、互いに平行に延びて成形体の長手方向に並列した複数の直状部431と、隣り合う直状部431同士を直状部431の一端側と他端側とで交互に連結する複数のターン部441とを有する。
12個の成形体を組み込むことにより、組み込み体47を形成する。この組み込み体47においては、6組の組体が組み込み体47の長手方向に並列している。
組み込み体47を折り返し部46が軸心側に位置するように所定の巻数(例えば、3回)だけ巻回して巻き取り体48を形成する。巻き取り体48は、一つの組体における複数の直状重ね合わせ部471が径方向に巻数分だけ積層されて形成された複数の直状積層部481を巻き取り体48の周方向に有する。各直状積層部481においては、巻数の2倍の数の直状部431が重ね合わされて径方向(放射方向)に一列に並んでいる。このとき、各直状積層部481は、巻き取り体48の周方向で小間隔を隔てた状態で位置している。
搬送駆動装置により、組み込み体47の巻き取り先端が芯部材6に当接する(又は当接する直前)まで搬送する。組み込み体47の搬送停止後、位置保持部材91を組み込み体47の隙間472に挿入する(図11(B)に示す状態)。これにより、組み込み体47は所定位置に位置決めされる。
位置保持部材91により所定位置に保持された組み込み体47の隙間472に予備整列部材81を挿入する(図11(C)参照)。これにより、組み込み体47の巻き取り先端側において、直状重ね合わせ部471における直状部431を径方向に整列させることができるとともに、直状重ね合わせ部471同士の間隔の大きさを揃えることができる。
その後、位置保持部材91を組み込み体47の隙間472から抜き取る(図10(A)参照)。
その後、予備整列部材81を隙間472に挿入させたまま組み込み体47を芯部材6に対して1ピッチ分だけ前進させる(図10(B)参照)。これにより、組み込み体47の巻き取り先端が芯部材6に1ピッチ分だけ巻き取られる。
その後、予備整列部材81が隙間472に挿入されたままの組み込み体47の他の隙間(予備整列部材81が挿入された隙間472から1ピッチ分だけ搬送方向反対側に隔てた隙間等)472に、位置保持部材91を挿入する(図10(C)参照)。
その後、位置保持部材91が隙間472に挿入されたままの組み込み体47から予備整列部材81を抜き取る(図11(A)参照)。
その後、予備整列部材81を1ピッチ分だけ搬送方向反対側に後退移動させる(図11(B)参照)。
そして、隙間472に位置保持部材91が挿入されたままの組み込み体47の他の隙間(位置保持部材91が挿入された隙間472の隣の隙間等)472に予備整列部材81を挿入する上記予備整列部材挿入工程、上記位置保持部材抜き取り工程、上記前進移動工程、上記位置保持部材挿入工程、上記予備整列部材抜き取り工程及び上記後退移動工程を繰り返す。
図13~図14に示される実施形態2の固定子コイルの製造方法における巻き取り工程は、連続巻き取り工程である。この連続巻き取り工程では、組み込み体47を芯部材6に対して連続的に送り込みながら巻き取る。
実施形態1~2では、2本の電気導体線から成形した2つの成形体の端部同士を接合して組体を形成し、この組体を6組組み込んで組み込み体47とする例について説明したが、これに限定されない。
Claims (4)
- 複数の相巻線が巻回されてなる固定子コイルの製造方法であって、
電気導体線から複数の成形体を成形する成形工程と、
複数の前記成形体を組み込んで組み込み体を形成する組み込み工程と、
前記組み込み体を芯部材に巻き取って巻き取り体を形成する巻き取り工程と、を備え、
前記成形体は、互いに平行に延びて前記組み込み体の長手方向に並列した複数の直状部と、隣り合う該直状部同士を該直状部の一端側と他端側とで交互に連結する複数のターン部とを有し、
各前記成形体は、互いの前記直状部同士がそれぞれ重ね合わされて形成された複数の直状重ね合わせ部を前記組み込み体の長手方向に有し、
前記巻き取り工程で得られた前記巻き取り体は、複数の前記直状重ね合わせ部が径方向に積層されて形成された複数の直状積層部を該巻き取り体の周方向に有し、
前記巻き取り工程では、前記組み込み体を前記芯部材に送り込む搬送途中で、前記組み込み体の隣り合う前記直状重ね合わせ部同士の間に形成された複数の隙間のうち連続する複数の該隙間にそれぞれ予備整列部材を挿入することにより、該予備整列部材で挟まれた該直状重ね合わせ部における直状部の重ね合わせを揃えることを特徴とする固定子コイルの製造方法。 - 前記巻き取り工程は、前記組み込み体を前記芯部材に対して連続的に送り込みながら巻き取る連続巻き取り工程であり、
前記連続巻き取り工程では、前記予備整列部材を該組み込み体と同期して移動させながら前記隙間に対して進入及び退出させることを特徴とする請求項1に記載の固定子コイルの製造方法。 - 前記巻き取り工程は、前記組み込み体を前記芯部材に対して隣り合う前記直状重ね合わせ部同士の間隔ずつ送り込みながら該組み込み体を該芯部材に巻き取るピッチ毎巻き取り工程であり、
前記ピッチ毎巻き取り工程では、停止している前記組み込み体の前記隙間に前記予備整列部材を挿入する予備整列部材挿入工程と、該予備整列部材と共に該組み込み体を前記直状重ね合わせ部同士の間隔だけ前進移動させる前進移動工程と、該組み込み体の該隙間から該予備整列部材を抜き取る予備整列部材抜き取り工程と、該予備整列部材を該直状重ね合わせ部同士の間隔だけ後退移動させる後退移動工程とを繰り返すことを特徴とする請求項1に記載の固定子コイルの製造方法。 - 前記ピッチ毎巻き取り工程では、前記前進移動工程の後に、前記組み込み体の前記予備整列部材が挿入された前記隙間以外の他の前記隙間に位置保持部材を挿入する位置保持部材挿入工程を行い、かつ、前記予備整列部材挿入工程の後に、該組み込み体の該隙間から該位置保持部材を抜き取る位置保持部材抜き取り工程を行い、
前記位置保持部材を前記隙間に挿入した状態で前記予備整列部材抜き取り工程、前記後退移動工程及び前記予備整列部材挿入工程を行い、かつ、該位置保持部材を該隙間から抜き取った状態で前記前進移動工程を行うことを特徴とする請求項3に記載の固定子コイルの製造方法。
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US12/677,224 US8132315B2 (en) | 2008-03-12 | 2009-03-11 | Method of manufacturing stator coil |
CN200980108570XA CN101971466B (zh) | 2008-03-12 | 2009-03-11 | 制造定子线圈的方法 |
DE112009000566.7T DE112009000566B4 (de) | 2008-03-12 | 2009-03-11 | Verfahren zur Herstellung einer Statorwicklung |
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JP5531634B2 (ja) | 2010-01-15 | 2014-06-25 | 株式会社デンソー | 回転電機の固定子の製造方法 |
JP5621263B2 (ja) | 2010-01-15 | 2014-11-12 | 株式会社デンソー | 固定子巻線の製造方法及びその製造装置 |
JP5472057B2 (ja) | 2010-01-15 | 2014-04-16 | 株式会社デンソー | 固定子巻線の巻回方法,固定子巻線の巻回装置及び固定子巻線の製造装置 |
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JP5674540B2 (ja) * | 2011-04-13 | 2015-02-25 | 日立オートモティブシステムズ株式会社 | 固定子および回転電機 |
JP6135535B2 (ja) | 2014-02-07 | 2017-05-31 | 株式会社デンソー | 回転電機の固定子 |
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JP7222007B2 (ja) | 2021-03-08 | 2023-02-14 | 本田技研工業株式会社 | コイル成形装置及びコイル成形方法 |
JP7239625B2 (ja) | 2021-03-08 | 2023-03-14 | 本田技研工業株式会社 | コイル成形装置及びコイル成形方法 |
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