WO2016129197A1 - ステータの組立方法およびステータの組立装置 - Google Patents
ステータの組立方法およびステータの組立装置 Download PDFInfo
- Publication number
- WO2016129197A1 WO2016129197A1 PCT/JP2015/086548 JP2015086548W WO2016129197A1 WO 2016129197 A1 WO2016129197 A1 WO 2016129197A1 JP 2015086548 W JP2015086548 W JP 2015086548W WO 2016129197 A1 WO2016129197 A1 WO 2016129197A1
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- WIPO (PCT)
- Prior art keywords
- coil
- end portion
- coil end
- stator core
- slot
- Prior art date
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Classifications
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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
-
- 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
- H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
- H02K15/0414—Windings consisting of separate elements, e.g. bars, hairpins, segments, half coils
- H02K15/0421—Windings consisting of separate elements, e.g. bars, hairpins, segments, half coils consisting of single conductors, e.g. hairpins
- H02K15/0428—Windings consisting of separate elements, e.g. bars, hairpins, segments, half coils consisting of single conductors, e.g. hairpins characterised by the method or apparatus for simultaneously twisting a plurality of hairpins
-
- 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
Definitions
- the present invention relates to a stator assembling method and a stator assembling apparatus, and more particularly, to a stator assembling method and a stator assembling apparatus in which a coil is moved radially outward from an inner peripheral side of a stator core and inserted into a slot.
- a jig in which a coil is mounted in a holding groove having the same pitch as the slot of the stator core is disposed on the inner peripheral side of the stator core, and the coil is moved radially outward to hold the coil.
- a method of assembling a stator that is inserted into a slot from a groove is disclosed. Specifically, the pressing means presses the coil end portion of the coil in the axial direction, thereby widening the circumferential width of the annular coil (crushing the coil end portion in the axial direction), while the pushing means is the coil of the coil. By pressing the end portion radially outward, the entire coil is moved from the holding groove to the slot side (radially outward).
- the coil can be assembled to the stator core without causing the coil end portion to be axially pressed and deformed (crushed) during assembly. It is desirable to do so.
- the present invention has been made to solve the above-described problems, and one object of the present invention is to assemble a coil by pressing a coil end portion radially outward to assemble a coil to a stator core. It is an object to provide a stator assembling method and a stator assembling apparatus capable of suppressing the coil end portion from falling down radially outward at the time of assembly.
- a stator assembling method includes a slot accommodating portion accommodated in a slot provided on the inner periphery of an annular stator core, and a central axis of the annular stator core.
- the coil end portion of the coil is collapsed by the collapse-suppressing member when the coil is inserted into the slot while increasing the interval between the slot accommodating portions.
- the coil member is supported by the stator core from the outside in the radial direction and the coil end is prevented from falling by the pressing member. Comprising by pressing the de section radially outward from the inner peripheral side of the stator core, inserting a coil into the slot, the.
- the coil end portion of the coil disposed on the inner peripheral side of the stator core is supported from the radially outer side of the stator core by the fall-down suppressing member.
- the step of inserting the coil into the slot is provided by pressing the coil end portion from the inner peripheral side of the stator core to the radially outer side by the pressing member while suppressing the collapse of the coil.
- a stator assembling apparatus in an axial direction that is a direction in which a central axis of the annular stator core extends, and a slot accommodating portion that is accommodated in a slot provided on the inner periphery of the annular stator core.
- the coil end portions of the coils are pressed radially outward from the inner peripheral side of the stator core to A pressing member that inserts the coil into the slot while widening the interval, and when the coil end portion is pressed radially outward by the pressing member, the coil end portion is supported from the radially outer side to prevent the coil end portion from collapsing.
- a fall-suppressing member
- the coil end portion when the coil end portion is pressed radially outward by the pressing member, the coil end portion is supported from the radially outer side.
- the fall prevention member which suppresses the fall of is provided.
- the coil end portion when a coil is assembled by pressing the coil end portion radially outward, the coil end portion is prevented from falling radially outward when the coil is assembled to the stator core. can do.
- FIG. 1 is a partial perspective sectional view of a stator assembling apparatus according to a first embodiment of the present invention.
- FIG. 2 is a schematic side view of the stator assembly device of FIG. 1 as viewed from the direction in which the central axis of the stator core extends.
- FIG. 2 is a schematic side view of the stator assembling apparatus of FIG. 1 viewed from a direction orthogonal to the central axis of the stator core. It is the perspective view which showed the stator after an assembly. It is the perspective view (A) and top view (B) of two coils of the same phase in which a slot accommodating part is accommodated in the same slot of a stator core.
- the assembly apparatus 100 for the stator 200 is an apparatus for assembling the coil 120 (see FIG. 2) to the stator core 110 (see FIG. 2).
- the assembly apparatus 100 is set with a coil assembly 140 including a stator core 110, a jig 130 attached to the stator core 110, and a coil 120 attached to the jig 130.
- the assembly apparatus 100 is configured to insert the coil 120 held by the jig 130 in the coil assembly 140 into the slot 113 of the stator core 110.
- the assembly apparatus 100 includes an extrusion apparatus 10 that pushes out the coil 120 of the coil assembly 140 and a support base 20 that supports the coil assembly 140.
- the extrusion device 10 includes a pair of arm portions 11 disposed on both sides in the axial direction of the coil assembly 140 (the X direction in which the central axis Ax (see FIG. 2) of the stator core 110 extends), and the upper ends of the pair of arm portions 11. And a beam portion 12 for connecting the two.
- the extrusion device 10 includes two pressing members 30.
- the two pressing members 30 include two pressing rollers 31 having a circular outer peripheral surface 31a. As shown in FIG. 2, the two pressing rollers 31 are disposed on both sides of the coil assembly 140 in the axial direction. Further, the two pressing rollers 31 are attached to a shaft member 13 that is rotatably supported at both ends by a pair of arm portions 11. Thus, the two pressing rollers 31 are rotatably supported by the pair of arm portions 11 via the shaft member 13.
- the two pressing rollers 31 are disposed at positions corresponding to the coil end portions 123 and 124 on one side and the other side in the axial direction of the coil assembly 140, respectively.
- the pressing member 30 presses the coil end portions 123 and 124 of the coil 120 radially outward from the inner peripheral side of the stator core 110, and the interval between the slot accommodating portions 121 and 122 (see FIG. 6).
- the coil 120 is inserted into the slot 113 while expanding.
- the extrusion device 10 is configured to be movable in the vertical direction (Z direction) by a pressing drive source 10a (press mechanism), and the pressing roller 31 moves in the vertical direction (stator core) as the extrusion device 10 moves. 110 (radial direction, Z direction).
- the pressing roller 31 moves toward the radially outer side (Z2 direction) while being disposed on the inner peripheral side (radially inner side) of the coil assembly 140, thereby causing the coil end portion 123 (124) to move to the stator core 110. Press radially outward from the inner periphery.
- the extrusion device 10 includes a fall prevention member 40 as shown in FIG.
- the fall prevention member 40 is disposed at the lower end of the pair of arms 11 of the extrusion device 10.
- the fall prevention members 40 are respectively attached to a pair of holding blocks 14 provided at the lower ends of the pair of arms 11.
- Each of the collapse suppression members 40 is disposed at a position radially outside the coil end portion 123 on one side and the coil end portion 124 on the other side of the coil assembly 140.
- the fall suppressing member 40 is configured to move radially outward while supporting the coil end portion 123 (124) as the pressing member 30 moves radially outward when pressed. Specifically, the fall suppressing member 40 is disposed at a position where the coil end portion 123 (124) contacts (supports) from outside in the radial direction. Further, the fall prevention member 40 is attached to the arm portion 11 of the extrusion device 10 via the holding block 14. Therefore, the pressing member 30 and the collapse suppression member 40 move radially outward with the vertical movement (movement outward in the radial direction) of the extrusion device 10 (arm portion 11).
- the fall suppressing member 40 includes the pressing member 30 and the fall suppressing member 40 according to a change in the shape (outer diameter) of the coil 120 inserted into the slot 113 as the pressing member 30 moves outward in the radial direction.
- the intervals D are made different.
- the holding block 14 is attached to the arm portion 11 in a state in which the relative position in the vertical direction with respect to the arm portion 11 can be changed by the elongated hole 14a extending in the vertical direction and the connecting member 14b with the arm portion 11. ing.
- the holding block 14 is configured to be movable relative to the arm portion 11 in the vertical direction by a holding block drive source 15.
- the position of the holding block 14 in the vertical direction is adjusted so that the collapse suppression member 40 is disposed at a position where it comes into contact with the coil end portion 123 (124) from the outside in the radial direction. Thereby, the fall suppressing member 40 changes the radial distance D from the pressing member 30 by the movement of the holding block 14.
- the fall prevention member 40 includes fall prevention rollers 41 and 42 having a circular outer peripheral surface 41a (42a).
- Each holding block 14 is provided with two fall prevention rollers 41 and 42, respectively.
- the fall prevention rollers 41 and 42 are rotatably attached to the holding block 14, respectively.
- the fall prevention rollers 41 and 42 are examples of the “first fall prevention roller” and the “second fall prevention roller” of the present invention, respectively.
- the fall prevention roller 41 passes through the rotation center O of the pressing member 30 and is on one side (Y1 direction side) with respect to a line segment P extending in the pressing direction (Z2 direction) with respect to the coil end portion 123 (124) of the pressing member 30. Is arranged.
- the fall prevention roller 42 is disposed on the other side (Y2 direction side) with respect to the line segment P.
- the assembling apparatus 100 includes a movement restricting member 50 for the coil end portion 124.
- the movement restricting member 50 is disposed on the axially outer side of the coil end portion 124 opposite to the lead wire portion 125 (126) of the coil 120.
- the coil end portion 124 is configured to be restricted from moving outward in the axial direction.
- the movement restricting member 50 is disposed at a position on the outer side in the axial direction with respect to the coil end portion 124 on the opposite side to the lead wire portion 125 (126).
- the movement restricting member 50 has a flat outer surface 51a that faces the coil end portion 124 in the axial direction and extends in the radial direction.
- the movement restricting member 50 is formed integrally with the collapse suppressing member 40.
- the movement restricting member 50 is formed integrally with each of the fall prevention rollers 41 and 42, and has a circular bowl-shaped portion 51 having an outer diameter larger than the outer peripheral surface of the fall prevention rollers 41 and 42. And 52.
- the hook-like portion 51 and the hook-like portion 52 each have a flat outer surface 51a and an outer surface 52a (see FIG. 2) extending in the radial direction. Note that the fall-preventing member 40 that supports the coil end portion 123 on the lead wire portion 125 (126) side is not provided with the hook-like portion 51 (52), and only the fall-preventing roller 41 (42) is provided. ing.
- the movement restricting member 50 is configured to move outward in the radial direction as the pressing member 30 moves outward in the radial direction. That is, the movement restricting member 50 formed integrally with the collapse suppressing member 40 moves in the vertical direction of the extrusion device 10 (arm portion 11) or in the vertical direction relative to the arm portion 11 of the holding block 14 (outside in the radial direction). To the outside in the radial direction.
- the movement restricting member 50 also moves in the axial direction (X direction) in accordance with the change in the amount of protrusion of the coil end portion 124 from the stator core 110 in the axial direction (X direction) when the coil 120 is inserted into the slot 113. It is configured to be movable. Specifically, the movement restricting member 50 is configured to be movable in the axial direction by the restricting member drive source 16.
- the support base 20 is configured to support the lower surface side of the coil assembly 140.
- the support table 20 includes a support roller 21 that supports the outer peripheral surface of the coil assembly 140, and a support roller drive source 22 that rotates the support roller 21. Accordingly, the support base 20 is configured to be able to rotate the coil assembly 140 around the central axis Ax by rotating the support roller 21 while supporting the lower surface side of the coil assembly 140 by the support roller 21.
- the pressing roller 31 and the fall prevention rollers 41 and 42 rotate along with the rotation around the central axis Ax of the coil assembly 140 (stator core 110).
- the stator core 110 has an annular shape. More specifically, the stator core 110 includes an annular back yoke 111 and a plurality of teeth 112 extending from the back yoke 111 toward the radially inner side (center axis line Ax side). The teeth 112 are arranged at equal intervals along the circumferential direction of the stator core 110. A slot 113 that holds the coil 120 is formed between two adjacent teeth 112. A plurality of slots 113 are arranged circumferentially on the inner periphery of the stator core 110.
- the coil 120 is configured by a rectangular conducting wire having a rectangular cross section, and is formed into an annular shape by winding the rectangular conducting wire a plurality of times (for example, five times) to form a predetermined shape. Yes.
- the coil 120 is an axis that is a direction in which the slot accommodating portions 121 and 122 accommodated in the slot 113 provided on the inner periphery of the annular stator core 110 and the central axis Ax (see FIG. 4) of the annular stator core 110 extend. Coil end portions 123 and 124 arranged on the outside of slot 113 in the direction, and lead wire portions 125 and 126 extending from slot accommodating portions 121 and 122, respectively.
- the slot accommodating portions 121 and 122 are formed in a substantially linear shape, and are disposed in the respective slots 113 along the axial direction.
- the coil end portions 123 and 124 are formed to be bent in a substantially triangular shape, and connect the end portions of the slot accommodating portions 121 and 122 that are spaced apart in the circumferential direction.
- the coil end portions 123 and 124 are arranged so as to protrude outward in the axial direction from both end portions (both end surfaces) in the axial direction of the stator core 110 with respect to the stator core 110.
- the lead wire portions 125 and 126 are respectively one end (start of winding) and the other end (end of winding) of the flat conducting wire wound a plurality of times.
- the lead wire portions 125 and 126 are both arranged on one side of the coil 120 in the axial direction (X1 direction side in FIG. 4), and are drawn out of the stator core 110.
- a plurality of coils 120 are arranged in the circumferential direction with respect to each slot 113 of the stator 200.
- the plurality of coils 120 are arranged in a circumferential shape so as to form an annular shape along the inner circumference of the stator core 110 as a whole.
- the coil 120 is concentrically wound on the stator core 110 and is mounted so as to realize the following (A) to (C).
- a plurality of coils 120 are arranged while the accommodated slots 113 are shifted one by one in the circumferential direction.
- B The flat conducting wires of two coils 120 adjacent to each other in the circumferential direction are assembled so as to alternately overlap each other in the stacking direction (radial direction).
- C The two in-phase coils 120 arranged at a predetermined distance apart from each other in the circumferential direction are arranged such that the flat conductors of the slot accommodating portions 121 and 122 are alternately arranged in the stacking direction (radial direction) in the same slot 113. Assembled.
- the in-phase coil 120 means any one of a U-phase coil, a V-phase coil, and a W-phase coil when the stator 200 is applied to, for example, a three-phase AC motor.
- the coil assembly 140 two in-phase coils 120 are arranged in the circumferential direction for each of the U phase, the V phase, and the W phase.
- the jig 130 is fixed to the stator core 110, and includes, for example, a plurality of guide jigs 131 shown in FIG.
- the guide jig 131 includes a guide portion 131a (see FIG. 9) for guiding the slot accommodating portion 121 (122) to the slot 113, and has a wedge shape with a tapered tip.
- the guide part 131a (refer FIG. 9) is the edge part of the circumferential direction both sides in the tapering front-end
- the plurality of guide jigs 131 are arranged along the circumferential direction so as to overlap each tooth 112 of the stator core 110 in the axial direction at both ends of the stator core 110 in the axial direction. Further, the guide jig 131 is provided so that the tapered tip end portion is located radially inside the tip end of the tooth 112. That is, the coil assembly 140 has a structure in which the teeth 112 of the stator core 110 (the slots 113 between the teeth 112) are extended radially inward by the guide jigs 131. Two adjacent guide jigs 131 form an extended slot portion 132 (see FIG. 3) in which the corresponding slot 113 is extended at a position radially inward of the teeth surface of the stator core 110.
- the coil 120 is assembled to the extension slot portion 132 formed by each guide jig 131 so as to realize the above-described arrangement rule. Accordingly, when each coil 120 disposed in the extension slot portion 132 is moved radially outward, the slot accommodating portion 121 or 122 of each coil 120 is guided radially outward along the guide portion 131a (FIG. 9). And are inserted into the corresponding slots 113 respectively.
- FIGS. 1 to 4 and 8 show the state after the coil 120 is inserted into the slot 113 of the stator core 110.
- FIG. FIG. 7 illustrates a state at the start of the process of inserting the coil 120 into the slot 113.
- each coil 120 is arranged on the inner peripheral side of the stator core 110. That is, the coil assembly 140 is assembled by combining the stator core 110, the plurality of coils 120, and the jig 130. Specifically, first, a plurality of coils 120 made of flat conductors are combined in a circumferential shape. Then, a plurality of guide jigs 131 are respectively attached to the combined plurality of coils 120. The guide jig 131 is attached to each coil 120 by inserting a tip portion between the slot accommodating portions 121 or 122 of the adjacent coils 120. As a result, each coil 120 is set (see FIG.
- each coil 120 in the extension slot portion 132 formed by the adjacent guide jig 131 (see FIG. 7), and the slot accommodating portion 121 or 122 (see FIG. 6) of each coil 120 is in each slot. It is arranged at a radially inner position with respect to 113.
- the coil end portions 123 and 124 of each coil 120 are disposed so as to protrude outward in the axial direction from both axial end surfaces of the stator core 110 (and the guide jig 131).
- the lead wire portions 125 and 126 of each coil 120 are arranged on one side in the axial direction (X1 direction side).
- the assembled coil assembly 140 is placed on the support roller 21 of the support base 20 of the assembly apparatus 100. Further, the shaft member 13 to which the pressing member 30 (the pressing roller 31) is attached is inserted into the inner peripheral side of the coil assembly 140, and both ends of the shaft member 13 are attached to the pair of arm portions 11 of the extrusion device 10. Accordingly, the pressing member 30 (the pressing roller 31) is arranged on the inner peripheral side of the coil assembly 140.
- the pressing member 30 (pressing roller 31) has an outer surface on the pressing direction side (radial outer side, lower side) radially inward of the coil end portion 123 (124). It arrange
- the holding block 14 to which the fall-preventing member 40 (fall-preventing rollers 41 and 42) is attached is attached to the pair of arms 11 of the extrusion device 10.
- the outer surface of the fall-preventing member 40 comes into contact with the radially outer surface of the coil end portion 123 (124). Placed in position.
- the radially inner pressing roller 31 and the radially outer falling prevention rollers 41 and 42 are disposed so as to sandwich the coil end portion 123 (124) in the radial direction. 7 and 8, for convenience of explanation, a part of the guide jig 131 of the coil assembly 140 is removed and the stator core 110 is exposed.
- the coil 120 whose coil end portion 123 (124) is pressed radially outward starts to move radially outward from the extension slot portion 132 of the jig 130 toward the slot 113 of the stator core 110.
- the slot accommodating portion 121 (122) is moved radially outward along the guide portion 131 a of the guide jig 131.
- the slot accommodating portion 121 (122) is inserted into the slot 113 while increasing the circumferential interval between the slot accommodating portions 121 and 122.
- the guide jig 131 moves the slot housing portion 121 (122) by the radial movement of the coil 120 while guiding the coil 120 so that the slot housing portion 121 (122) moves radially outward along the guide portion 131a.
- the coil 120 is deformed so as to expand between 121 and 122 in the circumferential direction (width direction).
- the coil assembly 140 is rotated by the support roller 21 in parallel with the pressing by the pressing member 30 (the pressing roller 31), so that each coil 120 arranged in the circumferential shape is little by little. Move toward the slot 113.
- the coil assembly 140 stator core 110
- the pressing roller 31 and the fall prevention rollers 41 and 42 rotate.
- the fall suppressing member 40 moves the coil end portion 123 (124) radially outward as the pressing member 30 (pressing roller 31) moves radially outward.
- the coil end portion 123 (124) is prevented from falling.
- the fall prevention rollers 41 and 42 rotate as the coil end portion 123 (124) moves in the rotation direction while supporting the coil end portion 123 (124).
- the falling suppression member 40 moves radially outward.
- the outer diameter R (curvature radius) of the coil end portion 123 (124) gradually increases as the coils 120 arranged circumferentially move outward in the radial direction. Become bigger. Therefore, the fall prevention rollers 41 and 42 are moved between the pressing roller 31 and the fall prevention rollers 41 and 42 by the holding block drive source 15 moving the holding block 14 downward relative to the arm portion 11.
- the interval D is varied. In other words, the relative position (interval) between the position of the contact point between the pressing roller 31 and the coil end part 123 (124) and the position of the contact point between the fall prevention rollers 41 and 42 and the coil end part 123 (124) is determined by the coil.
- the movement restricting member 50 (see FIG. 4) arranged on the coil end portion 124 side receives the coil end portion 124 on the opposite side to the lead wire portions 125 and 126 of the coil 120 at the axially outer position,
- the axial movement of the coil end portion 124 indicated by the two-dot chain line (see FIG. 10B) is restricted. That is, the movement restricting member 50 receives the movement outward in the axial direction by the outer surface 51a (52a) contacting the apex portion 124a of the coil end portion 124.
- the intermediate portion other than the winding start portion or winding end portion directly connected to the lead wire portion 125 or 126 is wound around the tooth 112 constituting the slot 113. It does not move because both ends are fixed.
- the coil end portions 123 (124) of the respective coils 120 are entirely from the end face of the stator core 110.
- the amount of protrusion L in the axial direction becomes smaller.
- the movement restricting member 50 is moved in the axial direction (direction approaching the stator core 110) by the restricting member drive source 16 (see FIG. 4) in accordance with the change in the axial protrusion amount L of the coil end portion 123 (124).
- the step of inserting the coils into the slots is completed.
- the coil assembly 140 is removed from the assembly apparatus 100, and the jig 130 (guide jig 131) is removed from the stator core 110.
- the stator 200 shown in FIG. 5 is obtained.
- the stator 200 is assembled as described above.
- the coil end portion 123 (124) of the coil 120 disposed on the inner peripheral side of the stator core 110 is supported from the radially outer side of the stator core 110 by the fall-down suppressing member 40, and the coil end portion.
- the coil 120 is inserted into the slot 113 by pressing the coil end portion 123 (124) from the inner peripheral side of the stator core 110 to the radially outer side by the pressing member 30 while suppressing the collapse of the 123 (124).
- the coil end portion 123 (124) is prevented from falling down radially outward. 40.
- the coil end portion 123 (124) falls radially outward when the coil 120 is assembled to the stator core 110. Can be suppressed.
- the collapse-suppressing member 40 is supported on the radially outer side while supporting the coil end portion 123 (124) as the pressing member 30 moves outward in the radial direction. Configure to move to. Thereby, the coil 120 inserted into the slot 113 by the pressing member 30 can be continuously supported by the fall suppressing member 40. As a result, it is possible to continue to suppress the coil end portion 123 (124) from falling down as the coil 120 moves during the process of inserting the coil 120 into the slot 113.
- the collapse suppression member 40 is changed in the outer diameter R (change in shape) of the coil 120 inserted into the slot 113 as the pressing member 30 moves outward in the radial direction.
- the distance D between the pressing member 30 and the fall suppressing member 40 is configured to be different.
- the relative positional relationship between the pressing member 30 and the fall-inhibiting member 40 is adjusted so as to have an appropriate distance D in accordance with the outer diameter R (curvature radius) of the coil 120 that increases with the insertion into the slot 113. can do.
- the pressing roller 31 that rotates in association with the relative movement in the rotation direction around the central axis Ax of the stator core 110 with respect to the pressing member 30 is provided as the pressing member 30, and the coil end portion 123.
- the fall prevention rollers 41 and 42 that rotate in accordance with the movement of the coil end portion 123 (124) in the rotation direction while supporting (124) are provided as the fall prevention member 40.
- the assembly apparatus 100 can be reduced in size. Further, the contact resistance with the coil end portion 123 (124) is reduced by rotating the fall prevention rollers 41 and 42 with the movement of the coil end portion 123 (124) in the rotation direction (relative rotation of the stator core 110). it can.
- the fall prevention roller 41 arrange
- the assembly apparatus 100 is provided with a fall prevention roller 42 disposed on the other side.
- the coil end part 123 (124) can be supported in several places, it can suppress that a local load (supporting force) is applied to the coil end part 123 (124) from the fall suppression member 40. it can.
- the coils 120 are connected in a circumferential shape.
- the fall-preventing rollers 41 and 42 can support a portion in the vicinity of the pressed portion and suppress the fall of the coil end portion 123 (124) in a wide range.
- the pressing roller 31 having a circular outer peripheral surface is provided on the pressing member 30, and the fall suppressing rollers 41 and 42 having circular outer peripheral surfaces are provided on the falling suppressing member 40. .
- the damage of the coil end part 123 (124) by contact with the coil end part 123 (124) can be suppressed. That is, in the step of inserting the coil 120 into the slot 113, the stator core 110 is moved relative to the pressing member 30 in the rotation direction around the central axis, and the circumferentially arranged coils 120 are gradually moved to the slots 113. Insert into. Therefore, the contact resistance can be reduced by rotating the pressing roller 31 and the fall prevention rollers 41 and 42 in accordance with the relative movement in the rotation direction, so that damage to the coil end portion 123 (124) can be suppressed. .
- the coil end portion 123 (124) is pressed radially outward by the pressing member 30, and the slot accommodating portion 121 (122) is moved along the guide portion 131 a of the guide jig 131.
- the assembly apparatus 100 is configured so that the slot accommodating portion 123 (124) is inserted into the slot 113 while the circumferential interval between the slot accommodating portions 121 and 122 is increased by being moved radially outward. . Accordingly, the slot accommodating portion 123 (124) can be reliably guided into the slot 113 by the guide jig 131. Further, when the slot accommodating portion 121 (122) is moved along the guide portion 131a, the coil 120 can be gradually deformed while suppressing an excessive force from being applied to the coil 120. 120 damage can be suppressed.
- the assembly device 300 for the stator 200 (see FIG. 5) according to the second embodiment holds the extrusion device 210 that holds the pressing member 30, and the collapse suppression member 40 (and the movement restriction member 50). Holding device 220.
- the arm portion 11 of the extrusion device 210 is not provided with the holding block 14 (see FIG. 1) of the first embodiment, and only the pressing member 30 (the pressing roller 31) is provided on the arm portion 11. Is held rotatably. By the vertical movement of the extrusion device 210, the pressing member 30 presses the coil end portion 123 (124) radially outward.
- the falling prevention member 40 is attached to the holding device 220.
- the collapse suppression member 40 corresponds to the coil end portions 123 (124) on both sides in the axial direction in the axial direction with respect to the coil assembly 140.
- the holding devices 220 are also arranged on both sides in the axial direction with respect to the coil assembly 140.
- the holding device 220 is configured to be able to move the collapse suppression member 40 toward the radial direction of the stator core 110 (coil assembly 140).
- the holding device 220 is configured so that the one side (Y1 direction side) and the other side (Y2 direction side) fall prevention members 40 are respectively centered on the stator core. It is possible to move along the straight lines L1 and L2 extending in the radial direction from the axis Ax.
- the holding device 220 is configured to independently move the one side (Y1 direction side) fall prevention roller 41 and the other side (Y2 direction side) fall prevention roller 42.
- the extrusion device 210 and the holding device 220 operate in synchronization with each other.
- the fall suppressing member 40 moves radially outward while supporting the coil end portion 123 (124) as the pressing member 30 moves radially outward when the pressing member 30 is pressed.
- the holding device 220 is configured such that the distance D between the pressing member 30 and the fall-down suppressing member 40 in accordance with a change in the outer diameter R of the coil 120 inserted into the slot 113 as the pressing member 30 moves radially outward. Make them different.
- the collapse suppression member 40 prevents the coil end portion 123 (124) from falling down radially outward when the coil 120 is assembled to the stator core 110. can do.
- the one side (Y1 direction side) fall prevention roller 41 and the other side (Y2 direction side) fall prevention roller 42 are configured to be independently movable. ing.
- the outer shape of the coil end portion 123 (124) is temporarily changed in the process of increasing the outer diameter of the coil end portion 123 (124) as the pressing member 30 inserts the coil 120 into the slot 113.
- the distance between the pressing member 30 and each of the fall prevention roller 41 and the fall prevention roller 42 can be individually controlled, so that a local load (supporting force) is applied to the coil end portion 123 (124). This can be effectively suppressed.
- the assembly device 400 of the stator 200 includes an extrusion device 210 that holds the pressing member 30, a holding device 220 that holds the collapse suppression member 340, and movement restriction. And a holding device 330 that holds the member 350.
- the holding device 220 and the holding device 330 are configured to be movable independently of each other.
- the fall prevention member 340 of the holding device 220 includes only the fall prevention roller 41 (42) that is a single roller that does not have the hook-like portion 51.
- the holding device 220 can move the fall prevention roller 41 (42) in the radial direction.
- the holding device 330 is, for example, disposed between the holding device 220 on one side (Y1 direction side) and the other side (Y2 direction side).
- the movement restricting member 350 has, for example, a flat disk shape.
- the movement restricting member 350 is not provided with the fall prevention roller 41 (42).
- the holding device 330 holds the movement restricting member 350 so as to be movable in the radial direction (vertical direction) and also movable in the axial direction (direction in which the central axis Ax extends).
- the movement restricting member 350 is configured to move radially outward (in the direction in which the line segment P extends) by the holding device 330 as the pressing member 30 moves radially outward when the pressing member 30 is pressed. . Further, the movement restricting member 350 responds to the change in the axial protrusion amount L (see FIG. 10) of the coil end portion 124 from the stator core 110 by the holding device 330, as in the first embodiment (see FIG. 4). Thus, it is configured to be movable also in the axial direction (X direction).
- the extrusion device 210, the holding device 220, and the holding device 330 operate in synchronization with each other.
- the pressing of the coil end portion 123 (124) by the pressing member 30, the support of the coil end portion 123 (124) by the collapse suppression member 340, and the movement restriction of the coil end portion 124 by the movement restriction member 350 are respectively performed. Done in parallel.
- the collapse suppressing member 340 prevents the coil end portion 123 (124) from falling outward in the radial direction when the coil 120 is assembled to the stator core 110. can do.
- the fall suppressing member 340 and the movement restricting member 350 are provided separately, and the fall preventing member 340 and the movement restricting member 350 are respectively provided by the holding device 220 and the holding device 330. It is configured to be movable independently. Thereby, the holding device 220 including the fall suppressing member 340 and the holding device 330 including the movement restricting member 350 are individually unitized, and the degree of freedom of arrangement of each unit in the assembling apparatus 400 can be improved. Therefore, according to the size of the stator 200, for example, it is possible to easily provide three or more fall prevention members 340 in the assembling apparatus 400 and two or more movement restricting members 350 in the assembling apparatus 400. Become.
- the collapse suppression member 40 (340) moves in the radial direction together with the pressing member 30
- the present invention is not limited to this.
- the collapse suppression member may not move in the radial direction together with the pressing member.
- the coil is inserted (pressed by the pressing member) to a certain extent while the radial position of the fall-suppressing member is fixed, and then the pressing is stopped, and the insertion of the coil is resumed after adjusting the radial position of the fall-suppressing member. May be.
- the coil may be inserted by repeating such operations.
- the fall suppressing member 40 (340) is moved relative to the pressing member 30 in the radial direction so that the distance between the pressing member 30 and the fall suppressing member 40 (340) is increased.
- this invention is not limited to this. In the present invention, it is not necessary to move the fall-down suppressing member relative to the pressing member in the radial direction.
- the coil is inserted (pressed by the pressing member) to a certain extent in a state where the relative position in the radial direction of the fall suppressing member with respect to the pressing member is fixed, and then the pressing is stopped, and the relative position in the radial direction of the falling suppressing member with respect to the pressing member
- the coil insertion may be resumed after adjusting.
- the coil may be inserted by repeating such operations.
- the pressing roller 31, the fall-preventing roller 41 (42), and the movement restricting member 350 are configured to be able to rotate freely without a drive source as the coil assembly 140 rotates.
- the assembly apparatus may be provided with a drive source for rotating the pressing roller, the fall prevention roller, and the movement restricting member in accordance with the rotational movement of the coil end portion. In this case, since the contact resistance between each of the pressing roller, the fall prevention roller, and the movement restricting member and the coil end portion can be reduced as much as possible, it is possible to suppress damage to the coil end portion during assembly of the stator. it can.
- the collapse suppressing member may be a plate member other than the roller.
- the movement restricting member 50 (350) is provided in the assembling apparatus 100 (300, 400) has been shown, but the present invention is not limited to this. In the present invention, the movement restriction member may not be provided in the assembly apparatus.
- the structure of the coil assembly 140 described in the first to third embodiments is merely an example, and the present invention is not limited to this.
- a jig having a shape different from that of the jig 130 (guide jig 131) may be used for the coil assembly.
- the example of the concentric coil 120 in which the conductive wire is wound a plurality of times is shown.
- the present invention is not limited to this.
- a so-called wave winding coil in which a conductive wire is bent into a wave shape may be used.
- the present invention can also be applied to a configuration in which a wave winding coil is pressed radially outward and inserted into a slot as disclosed in Japanese Patent Application Laid-Open No. 2009-268158.
- the example using the coil 120 made of the flat wire is shown, but the present invention is not limited to this.
- a coil made of a conducting wire having a polygonal cross section other than a rectangular conducting wire or a coil made of a round wire may be used.
- the pressing member 30 includes the pressing roller 31.
- the present invention is not limited to this.
- the pressing member may be a plate member other than the roller.
- the coil assembly 140 is rotated by the support roller 21 in parallel with the local pressing of the coil end portion 123 (124) by the pressing member 30 (the pressing roller 31).
- the present invention is not limited to this.
- the coils 120 arranged in an annular shape may be collectively inserted into the slot 113 over the entire circumference in the circumferential direction.
- the pressing member 430 on the inner peripheral side of the coil 120 (coil end portion 124) arranged in an annular shape and the collapse suppressing member 440 on the outer peripheral side are provided in pairs.
- the pair of the pressing member 430 and the collapse suppressing member 440 is held by a holding device 420 so as to be movable in the radial direction, for example.
- the pressing member 430 is in contact with the inner peripheral surface of the coil end portion 124 from the inner peripheral side
- the collapse suppression member 440 is in contact with the outer peripheral surface of the coil end portion 124 from the outer peripheral side.
- the pressing member 430 and the falling-down suppressing member 440 are illustrated slightly separated from the coil end portion 124.
- a plurality of pairs (eight pairs in FIG. 13) of the pressing member 430 and the collapse suppressing member 440 are arranged at equal angular intervals over the entire circumference in the circumferential direction.
- Each pair of the eight pressing members 430 and the fall-suppressing member 440 moves radially outward, so that each fall-suppressing member 440 supports each coil end portion 124 from the radially outer side over the entire circumference,
- the member 430 presses the coil end portion 124 radially outward over the entire circumference.
- the coils 120 arranged circumferentially on the coil assembly 140 are collectively bundled over the entire circumference with respect to the slots 113 (see FIG. 7) of the stator core 110 (see FIG. 7). Inserted.
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Abstract
Description
(ステータの組立装置の構造)
図1~図5を参照して、第1実施形態によるステータ200(図5参照)の組立装置100の構造について説明する。
次に、図2~図6を参照して、コイルアッセンブリ140の各部の構造について説明する。
図1~図10を参照して、ステータ200の組立方法について説明する。なお、図1~図4および図8は、ステータコア110のスロット113にコイル120が挿入された後の状態を示している。図7は、スロット113にコイル120を挿入する工程の開始時点の状態を図示している。
まず、各コイル120が、ステータコア110の内周側に配置される。すなわち、ステータコア110、複数のコイル120および治具130を組み合わせて、コイルアッセンブリ140が組み立てられる。具体的には、まず、平角導線からなる複数のコイル120が周状に組み合わされる。そして、組み合わされた複数のコイル120に、複数のガイド治具131がそれぞれ取り付けられる。ガイド治具131は、隣接するコイル120のスロット収容部121または122の間に先端部が挿入されることにより各コイル120に取り付けられる。この結果、それぞれのコイル120は、隣接するガイド治具131により形成された延長スロット部132にセット(図7参照)され、各コイル120のスロット収容部121または122(図6参照)が各スロット113に対して径方向内側位置に配置される。また、各コイル120のコイルエンド部123および124が、ステータコア110(およびガイド治具131)の軸方向両端面から、軸方向外側にそれぞれ突出するように配置される。各コイル120のリード線部125および126は、軸方向の一方側(X1方向側)に配置される。
次に、図1に示すように、組み立てられたコイルアッセンブリ140が、組立装置100の支持台20の支持ローラ21上に載置される。また、押圧部材30(押圧ローラ31)が取り付けられた軸部材13がコイルアッセンブリ140の内周側に挿入され、軸部材13の両端が押出装置10の一対の腕部11に取り付けられる。これにより、押圧部材30(押圧ローラ31)がコイルアッセンブリ140の内周側に配置される。押出装置10の上下方向位置が調節されることによって、押圧部材30(押圧ローラ31)は、押圧方向側(径方向外側、下方向)の外表面がコイルエンド部123(124)の径方向内側の表面と当接する位置(図7参照)に配置される。
次に、押出装置10および支持台20(図3参照)が駆動され、各スロット113に各コイル120が挿入される。押出装置10が図1に示した押圧駆動源10a(プレス機構)により下方向(Z2方向)に移動されることによって、コイルアッセンブリ140の内周側の押圧部材30(押圧ローラ31)により、コイルエンド部123(124)が径方向外側(下方向)に押圧される。押圧部材30(押圧ローラ31)によるコイルエンド部123(124)の押圧と並行して、支持台20の支持ローラ21が、支持ローラ駆動源22により回転されることによって、コイルアッセンブリ140が中心軸線Ax周りに回転される。すなわち、支持ローラ21は、押圧部材30に対してステータコア110を中心軸線Ax周りの回転方向に相対的に移動させる。
第1実施形態では、以下のような効果を得ることができる。
次に、図1、図4、図5および図11を参照して、本発明の第2実施形態について説明する。第2実施形態では、押圧部材30と倒れ抑制部材40とを、共に押出装置10によって上下方向に移動可能に構成した上記第1実施形態とは異なり、倒れ抑制部材40を押圧部材30とは別個に径方向に移動可能に構成した例について説明する。なお、第2実施形態において、上記第1実施形態と同様の構成については、同一の符号を用いると共に説明を省略する。
図11に示すように、第2実施形態によるステータ200(図5参照)の組立装置300は、押圧部材30を保持する押出装置210と、倒れ抑制部材40(および移動規制部材50)を保持する保持装置220とを含んでいる。
この第2実施形態においても、上記第1実施形態と同様、倒れ抑制部材40によって、ステータコア110へのコイル120の組付時にコイルエンド部123(124)が径方向外側へ倒れてしまうのを抑制することができる。
次に、図12を参照して、本発明の第3実施形態について説明する。第3実施形態では、倒れ抑制部材40と移動規制部材50とを一体的に設けた上記第1実施形態とは異なり、倒れ抑制部材340と移動規制部材350とを別個に設けた例について説明する。なお、第3実施形態において、上記第2実施形態と同様の構成については、同一の符号を用いると共に説明を省略する。
図12に示すように、第3実施形態によるステータ200(図5参照)の組立装置400は、押圧部材30を保持する押出装置210と、倒れ抑制部材340を保持する保持装置220と、移動規制部材350を保持する保持装置330とを含んでいる。保持装置220と保持装置330とは、互いに独立して移動可能に構成されている。
この第3実施形態においても、上記第1実施形態と同様、倒れ抑制部材340によって、ステータコア110へのコイル120の組付時にコイルエンド部123(124)が径方向外側へ倒れてしまうのを抑制することができる。
なお、今回開示された実施形態は、すべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、上記した実施形態の説明ではなく特許請求の範囲によって示され、さらに特許請求の範囲と均等の意味および範囲内でのすべての変更(変形例)が含まれる。
21 支持ローラ
30、430 押圧部材
31 押圧ローラ
31a 外周面
40、340、440 倒れ抑制部材
41 倒れ抑制ローラ(第1倒れ抑制ローラ)
41a 外周面
42 倒れ抑制ローラ(第2倒れ抑制ローラ)
42a 外周面
110 ステータコア
113 スロット
120 コイル
121、122 スロット収容部
123、124 コイルエンド部
131 ガイド治具
Ax 中心軸線
P 線分
Claims (10)
- 円環状のステータコアの内周に設けられたスロットに収容されるスロット収容部と、前記円環状のステータコアの中心軸線の延びる方向である軸方向において前記ステータコアの端面の外側に配置されるコイルエンド部とを有するコイルを、複数組み合わせて前記ステータコアの内周側に配置する工程と、
前記ステータコアの内周側に配置された前記コイルの前記コイルエンド部を押圧部材により前記ステータコアの内周側から外周側へ押圧することにより、前記スロット収容部同士の間隔を拡げながら前記コイルを前記スロットに挿入する際に、前記コイルの前記コイルエンド部を倒れ抑制部材により前記ステータコアの径方向外側から支持して前記コイルエンド部の倒れを抑制しながら、前記押圧部材により前記コイルエンド部を前記ステータコアの内周側から径方向外側に押圧することにより、前記スロットに前記コイルを挿入する工程と、を備えた、ステータの組立方法。 - 前記コイルを挿入する工程は、前記押圧部材の押圧時の径方向外側への移動に伴って、前記倒れ抑制部材を径方向外側に移動させることを特徴とする、請求項1に記載のステータの組立方法。
- 前記コイルを挿入する工程は、前記押圧部材の径方向外側への移動に伴う前記スロットに挿入される前記コイルの形状の変化に応じて、前記押圧部材と前記倒れ抑制部材との間隔を異ならせることを特徴とする、請求項2に記載のステータの組立方法。
- 前記コイルを挿入する工程は、前記押圧部材により前記コイルエンド部を前記ステータコアの内周側から径方向外側に押圧しながら、前記押圧部材に対して前記ステータコアを前記中心軸線周りの回転方向に相対的に移動させる工程であり、
前記押圧部材は、前記ステータコアの前記回転方向への移動に伴って回転する押圧ローラであり、
前記倒れ抑制部材は、前記コイルエンド部を支持しながら前記コイルエンド部の前記回転方向への移動に伴って回転する倒れ抑制ローラである、請求項1~3のいずれか1項に記載のステータの組立方法。 - 前記コイルを前記ステータコアの内周側に配置する工程は、組み合わされた複数の前記コイルに、前記スロット収容部を前記スロットに案内するガイド部を含むガイド治具を取り付ける工程を含み、
前記コイルを挿入する工程は、前記押圧部材により前記コイルエンド部を径方向外側に押圧し、前記スロット収容部を前記ガイド治具の前記ガイド部に沿って径方向外側に移動させることにより、前記スロット収容部間の周方向の間隔を拡大させながら前記スロット収容部を前記スロット内に挿入することを特徴とする、請求項1~4のいずれか1項に記載のステータの組立方法。 - 円環状のステータコアの内周に設けられたスロットに収容されるスロット収容部と、前記円環状のステータコアの中心軸線の延びる方向である軸方向において前記ステータコアの端面の外側に配置されるコイルエンド部とを有するコイルが複数組み合わされた状態で、前記コイルの前記コイルエンド部を、前記ステータコアの内周側から径方向外側に押圧して、前記スロット収容部同士の間隔を拡げながら前記スロットに前記コイルを挿入する押圧部材と、
前記押圧部材により前記コイルエンド部が径方向外側に押圧される際に、前記コイルエンド部を径方向外側から支持して前記コイルエンド部の倒れを抑制する倒れ抑制部材と、を備えた、ステータの組立装置。 - 前記倒れ抑制部材は、前記押圧部材の押圧時の径方向外側への移動に伴って、前記コイルエンド部を支持しながら径方向外側に移動するように構成されている、請求項6に記載のステータの組立装置。
- 前記倒れ抑制部材は、前記押圧部材の径方向外側への移動に伴って前記スロットに挿入される前記コイルの形状の変化に応じて、前記押圧部材と前記倒れ抑制部材との間隔を異ならせるように構成されている、請求項7に記載のステータの組立装置。
- 前記押圧部材は、前記押圧部材に対する前記ステータコアの前記中心軸線周りの回転方向への相対移動に伴って回転する押圧ローラであり、
前記倒れ抑制部材は、前記コイルエンド部を支持しながら前記コイルエンド部の前記回転方向への移動に伴って回転する倒れ抑制ローラであり、
前記倒れ抑制ローラは、前記押圧部材の前記コイルエンド部に対する押圧方向に延びる線分に対して一方側に配置される第1倒れ抑制ローラと、前記線分に対して他方側に配置される第2倒れ抑制ローラとを含む、請求項6~8のいずれか1項に記載のステータの組立装置。 - 組み合わされた複数の前記コイルに取り付けられ、前記スロット収容部を前記スロットに案内するガイド部を含むガイド治具をさらに備え、
前記押圧部材により前記コイルエンド部を径方向外側に押圧し、前記スロット収容部を前記ガイド治具の前記ガイド部に沿って径方向外側に移動させることにより、前記スロット収容部間の周方向の間隔を拡大させながら前記スロット収容部を前記スロット内に挿入するように構成されている、請求項6~9のいずれか1項に記載のステータの組立装置。
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US9071116B2 (en) * | 2013-01-17 | 2015-06-30 | Remy Technologies, Llc | Apparatus for installing stator winding conductors |
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2015
- 2015-12-28 CN CN201580073332.5A patent/CN107210658B/zh not_active Expired - Fee Related
- 2015-12-28 US US15/539,432 patent/US10418887B2/en not_active Expired - Fee Related
- 2015-12-28 DE DE112015005324.7T patent/DE112015005324T5/de not_active Ceased
- 2015-12-28 JP JP2016574640A patent/JP6288316B2/ja not_active Expired - Fee Related
- 2015-12-28 WO PCT/JP2015/086548 patent/WO2016129197A1/ja active Application Filing
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JPH0775297A (ja) * | 1993-09-06 | 1995-03-17 | Japan Servo Co Ltd | 電動機ステータコイルの締結具と締結装置および締結方法 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020137195A (ja) * | 2019-02-15 | 2020-08-31 | アイシン・エィ・ダブリュ株式会社 | ステータの組立方法およびステータの組立装置 |
JP7305978B2 (ja) | 2019-02-15 | 2023-07-11 | 株式会社アイシン | ステータの組立方法およびステータの組立装置 |
JP2023150687A (ja) * | 2022-03-31 | 2023-10-16 | 本田技研工業株式会社 | コイル挿入装置及びコイル挿入方法 |
JP7473579B2 (ja) | 2022-03-31 | 2024-04-23 | 本田技研工業株式会社 | コイル挿入装置及びコイル挿入方法 |
Also Published As
Publication number | Publication date |
---|---|
JP6288316B2 (ja) | 2018-03-07 |
CN107210658A (zh) | 2017-09-26 |
CN107210658B (zh) | 2019-08-02 |
US20180091029A1 (en) | 2018-03-29 |
JPWO2016129197A1 (ja) | 2017-08-17 |
DE112015005324T5 (de) | 2017-08-31 |
US10418887B2 (en) | 2019-09-17 |
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