JP2017005770A - Manufacturing apparatus of stator for dynamo-electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of stator for dynamo-electric machine capable of reducing occurrence of defective joint, by positioning a terminal pair located in the radial intermediate part reliably, in the stator for dynamo-electric machine where a plurality of terminal pairs consisting of two terminals to be joined, out of a plurality of terminals extending from the axial end face of a stator core, are arranged in the circumferential direction, and three or more of terminal pairs are arranged in each array extending in the radial direction.SOLUTION: A manufacturing apparatus includes a pair of positioning arrows 21, 22 for positioning three or more of terminal pairs 17a-17c, in each array extending in the radial direction, while holding from the opposite sides in the circumferential direction, when joining the predetermined terminals 161-166 of a conductor segment 15. The pair of positioning arrows 21, 22 have an intermediate protrusion 23 for positioning the terminal pair 17b, located in the radial intermediate part, while holding from the opposite sides in the radial direction.SELECTED DRAWING: Figure 13

Description

  The present invention relates to an apparatus for manufacturing a stator for a rotating electrical machine used as an electric motor or a generator in a vehicle, for example.

  2. Description of the Related Art Conventionally, a stator in which a segment type coil is wound around a stator core is known as a stator of a rotating electrical machine mounted on a vehicle or the like. The stator includes an annular stator core having a plurality of slots in the circumferential direction, and predetermined end portions of a plurality of conductor segments inserted from the slots and extending from the axial end surfaces of the stator core. And a stator coil wound around the stator core.

  Patent Document 1 discloses a method of manufacturing a stator for a rotating electrical machine that efficiently holds terminal pairs as a plurality of objects to be welded and prevents damage to welding marks. In this manufacturing method, a plurality of conductor segments (electrical conductors) are arranged in a stator core, and a pair of two terminal portions to be joined among a plurality of terminal portions extending from the stator core are formed. A step of arranging the pair of parts in a ring, and a step of holding a plurality of terminal part pairs by placing a holding tool in contact with the terminal part pairs on both sides between two terminal part pairs adjacent in the circumferential direction; Joining the tip portions of the plurality of terminal portion pairs in a state where the plurality of terminal portion pairs are held.

JP 2000-350422 A

  By the way, as described above, the stator coil inserted and wound in the slots of the stator core has even-numbered (even-numbered layer) conductor segments inserted and arranged in one row in the radial direction. And two terminal parts which should be joined among a plurality of terminal parts extended from the axial direction end face of a stator core make a pair, these a plurality of terminal part pairs are arranged in the peripheral direction, and are arranged in the diameter direction 1 line. Two or more pairs of terminal portions are arranged in each extending column.

  In this case, in the manufacturing method disclosed in Patent Document 1, positioning and holding of the pair of terminal portions positioned on the innermost diameter side and the outermost diameter side and grounding during welding are possible. However, when three or more pairs of terminal portions are arranged in each row in which the stator coils extend in the radial direction, the terminal pairs located in the radial intermediate portion are positioned and held from both sides in the radial direction. Is structurally difficult. Therefore, in the process of joining the terminal part pair, there is a possibility that a joint failure of the terminal part pair located in the radial intermediate part may occur.

  This invention is made | formed in view of the said situation, The several terminal part pair which consists of two terminal parts which should be joined among the several terminal parts extended from the axial direction end surface of the stator core is the circumferential direction. In the stator for a rotating electrical machine in which three or more pairs of terminal portions are arranged in each of the radially extending rows, the positioning of the terminal portion pair located in the radially intermediate portion can be ensured. It is an object to be solved to provide a stator for a rotating electrical machine that can reduce the occurrence of poor bonding.

The present invention made to solve the above problems
An annular stator core (11) having a plurality of slots (12) in the circumferential direction, and a plurality of conductor segments (15) inserted into the slots and extending from the axial end surface of the stator core A plurality of terminals extending from axial end surfaces of the stator core, the terminal portions (161 to 166) being joined to each other, and a stator coil (13) wound around the stator core. The two terminal portions to be joined among the portions form a pair, and the plurality of terminal portion pairs (17a to 17c) are arranged in the circumferential direction, and three or more pairs of the terminals in each row extending in the radial direction In the manufacturing apparatus of the stator for a rotating electrical machine in which the part pair is arranged,
A pair of positioning arrows (21, 22) that hold and position three or more pairs of terminal portions from both sides in the circumferential direction in each row extending in the radial direction when the predetermined terminal portions of the conductor segments are joined to each other. ), And the pair of positioning arrows includes an intermediate convex portion (23) that holds and positions the terminal portion pair (17b) positioned at the radial intermediate portion from both radial sides.

  According to this configuration, when predetermined terminal portions of the conductor segments are joined together, the pair of positioning arrows that position and hold three or more pairs of terminal portions from both sides in the circumferential direction in each row extending in the radial direction. The pair of positioning arrows have intermediate convex portions that position and position the terminal pair located at the radial intermediate portion while holding the terminal portion pair from both sides in the radial direction. Thereby, since a pair of terminal part located in a radial direction intermediate part can be positioned reliably with a pair of positioning arrows, generation | occurrence | production of a joining defect can be reduced.

  In addition, the code | symbol in the parenthesis after each member and site | part described in this column and the claim shows the correspondence with the specific member and site | part described in embodiment mentioned later, and is a patent. It does not affect the configuration of each claim described in the claims.

It is a perspective view of the stator assembly which is the state just before the welding process of the stator for rotary electric machines which concerns on Embodiment 1. FIG. It is the elements on larger scale which expand and show the A section of FIG. FIG. 3 is a perspective view of a conductor segment constituting the stator coil in the first embodiment. The perspective view which shows the state which set the manufacturing apparatus which consists of a pair of positioning arrow, an inner diameter side holder, and an outer diameter side holder in the predetermined position, when joining the predetermined terminal parts of a conductor segment in Embodiment 1. FIG. FIG. 5 is a perspective view showing the positional relationship between a positioning arrow, an inner diameter side holding tool, and an outer diameter side holding tool in the state shown in FIG. 4 and a terminal pair of conductor segments to be positioned. It is a top view which shows the positional relationship with the terminal part pair of the conductor segment which should be positioned when a pair of positioning arrow, an inner diameter side holder, and an outer diameter side holder are set in the state shown in FIG. FIG. 5 is a perspective view showing a state in which a pair of positioning arrows are moved radially inward from the state shown in FIG. It is the elements on larger scale which expand and show the B section of FIG. It is a top view which shows the positional relationship of the terminal part pair of the conductor segment which should be positioned in the state shown in FIG. 4, and a pair of positioning arrow, an inner diameter side holder, and an outer diameter side holder. It is the elements on larger scale which expand and show the C section of FIG. FIG. 10 is a plan view showing a state in which a predetermined pair of end portions of a conductor segment is clamped from both sides in the circumferential direction with a pair of positioning arrows in the state shown in FIG. 9. FIG. 12 is a plan view showing a state in which a pair of positioning arrows are moved in opposite radial directions from the state shown in FIG. 11 and the terminal pair located at the radial intermediate portion is held and positioned from both radial sides by intermediate convex portions. is there. From the state shown in FIG. 12, the inner diameter side holder and the outer diameter side holder are moved in the radial direction so that the inner diameter side end portion and the outermost diameter side end portion pair and the outermost diameter side end portion pair are radially aligned. It is a top view which shows the state hold | maintained and positioned from both sides. FIG. 14 is a perspective view of FIG. 13. FIG. 3 is an explanatory diagram illustrating a state in which the stator assembly 10 is rotated by a predetermined amount in the circumferential direction after the welding process is completed in the first embodiment. The perspective view which shows the state which set two sets of manufacturing apparatuses which consist of a pair of positioning arrow, an inner diameter side holder, and an outer diameter side holder in the case of joining the predetermined terminal parts of a conductor segment in the modification 1. FIG. In Embodiment 2, it is a top view which shows the state which carried out relative movement of a pair of positioning arrow to radial direction, and positioned 3 terminal part pairs arrange | positioned at radial direction with a pair of positioning arrow. In Embodiment 2, it is a perspective view which shows the state which carried out relative movement of a pair of positioning arrow to radial direction, and positioned 3 terminal part pairs arrange | positioned at radial direction with a pair of positioning arrow.

  Hereinafter, embodiments of a stator manufacturing apparatus for a rotating electrical machine according to the present invention will be specifically described with reference to the drawings. In addition, this invention is not limited to the following embodiment and modification, It can change variously in the range which does not deviate from the meaning of this invention.

Embodiment 1
First, a schematic configuration of a stator for a rotating electrical machine manufactured by the manufacturing apparatus of the present embodiment will be described with reference to FIGS. FIG. 1 is a perspective view of the stator assembly in a state immediately before the welding process of the stator for a rotating electrical machine according to the first embodiment. This stator is mounted on a vehicle AC generator as a rotating electrical machine, and has an annular stator core 11. The stator core 11 is configured by laminating a plurality of steel plates in the axial direction. A plurality of slots 12 are provided on the inner peripheral surface of the stator core 11 along the axial direction.

  A plurality of slots 12 are wound with stator coils 13 as windings. The stator coil 13 is a three-phase winding as a multiphase winding. The stator coil 13 forms a first coil end group 13a at one axial end of the stator core 11, and forms a second coil end group 13b at the other axial end. In the slot 12, a conductor segment 15 constituting the stator coil 13 is accommodated as an electric conductor. Further, an insulating sheet 14 is interposed between each slot 12 and the conductor segment 15 accommodated therein.

  The stator coil 13 is configured by joining a plurality of conductor segments 15 as electric conductors. In this embodiment, a U-shaped conductor segment 15 as shown in FIG. 3 is mainly used. An I-shaped conductor segment may be used. The U-shaped conductor segment 15 shown in FIG. 3 is formed by bending a conductor wire having a rectangular cross section into a U shape and then twisting both arms in a predetermined direction at a predetermined position. In the present embodiment, two types of large and small U-shaped conductor segments 15 as shown in FIG. 3 are used. The outer peripheral surface of the conductor segment 15 is covered with an insulating film (not shown). In addition, the conductor exposed part is formed by peeling an insulating film in both the terminal parts joined by welding of the conductor segment 15. FIG.

  These U-shaped conductor segments 15 are twisted in the direction of arrow X and then inserted into the slot 12 from one axial end side of the stator core 11, and from the axial end face on the other end side of the stator core 11. The extended open end 16 is twisted in the direction of arrow Y to form a first coil end group 13a as shown in FIG. The open end portion 16 includes an obliquely extending portion 16 a that extends obliquely and an end portion 16 b that extends in the axial direction and is joined to another conductor segment 15.

  In this embodiment, six conductor segments 15 are accommodated in one slot 12 in six layers in the radial direction. As a result, in the first coil end group 13a, the six terminal portions 161 to 166 are arranged in a row in the radial direction. And the two terminal parts 161 and 162 radially adjacent on the inner diameter side form a terminal part pair 17a to be joined. Further, two terminal portions 163 and 164 which are located in the radial intermediate portion and are adjacent in the radial direction form a terminal portion pair 17b to be joined. Further, two terminal portions 165 and 166 adjacent in the radial direction on the outer diameter side form a terminal portion pair 17c to be joined.

  In the present embodiment, the plurality of terminal unit pairs 17a to 17c are arranged on three annular lines so as to form a triple ring. A series of windings that circulate around the stator core 11 in the circumferential direction are formed by joining a plurality of terminal portion pairs 17a to 17c arranged as shown in FIG. 2 by welding.

  Next, the manufacturing process of said stator is demonstrated. First, the stator core 11 is manufactured. Next, the plurality of conductor segments 15 are inserted into the slots 12 of the stator core 11, and the process proceeds to the step of arranging the plurality of terminal portion pairs 17a to 17c. In this step, a plurality of conductor segments 15 are inserted into the slot 12 from one axial end side of the stator core 11. Then, the plurality of open end portions 16 of the conductor segment 15 extending from the axial end surface on the other end side of the stator core 11 are twisted in the arrow Y direction as shown in FIG. By this twisting process, the plurality of open end portions 16 are arranged as shown in FIG. In other words, the two terminal portions 161 to 166 to be joined are arranged opposite to each other in the radial direction as the terminal portion pairs 17a to 17c. In the present embodiment, three pairs of terminal portions 17a to 17c are arranged in one row in the radial direction.

  Next, a holding process and a welding process are performed. Thereby, terminal part pair 17a-17c is welded, and predetermined two open end parts 16 are electrically joined. As a result, a winding in which a plurality of conductor segments 15 are connected in series is formed.

  Next, a holding process and a welding process performed using the manufacturing apparatus of the present embodiment will be described in detail with reference to FIGS. The manufacturing apparatus according to the present embodiment includes a pair of positioning arrows 21 and 22 that perform circumferential positioning of three or more pairs (three pairs in the present embodiment) of terminal portions 17a to 17c arranged in one row in the radial direction. ing. These pair of positioning arrows 21 and 22 are used for positioning the intermediate convex portion 23 for positioning the terminal portion pair 17b located in the radially intermediate portion and the terminal portion pair 17a located on the innermost diameter side in the radial direction. And the outer convex portion 29 for positioning the terminal portion pair 17c located on the outermost diameter side in the radial direction. In this case, one positioning arrow 21 is provided with an intermediate convex portion 23 and an inner convex portion 28, and the other positioning arrow 22 is provided with an intermediate convex portion 23 and an outer convex portion 29.

  Further, the manufacturing apparatus of the present embodiment includes an inner diameter side holder 26 having an inner holding portion 24 that positions the terminal portion pair 17a located on the innermost diameter side in the radial direction, and a terminal portion pair located on the outermost diameter side. And an outer diameter side holding tool 27 having an outer holding portion 25 for positioning in the radial direction of 17c. The pair of positioning arrows 21, 22, the inner holding part 24 (inner diameter side holding tool 26), and the outer holding part 25 (outer diameter side holding tool 27) also function as electrodes for passing a welding current. Therefore, the pair of positioning arrows 21, 22, the inner holding part 24 (inner diameter side holding tool 26), and the outer holding part 25 (outer diameter side holding tool 27) are made of conductive materials such as copper, iron, tungsten, aluminum and the like. It is made of a material with excellent heat conductivity.

  First, in the holding step, the stator assembly 10 processed into the shape shown in FIG. 1 is fixed on the work table by a fixing device (not shown) or the like. Next, as shown in FIGS. 4, 5, and 6, with respect to the stator assembly 10, a pair of positioning arrows 21, 22 having an intermediate convex portion 23, an inner convex portion 28, and an outer convex portion 29, and the inner side An inner diameter side holding tool 26 having a holding part 24 and an outer diameter side holding tool 27 having an outer holding part 25 are arranged at predetermined positions. That is, a pair of positioning arrows 21 and 22 and an outer diameter side holder 27 are arranged on the outer diameter side of the stator assembly 10 with respect to the three terminal pair 17a to 17c arranged in the radial line. The inner diameter side holder 26 is disposed on the inner diameter side of the stator assembly 10.

  Next, as shown in FIGS. 7, 8, 9, and 10, a pair of positioning arrows 21, 22 arranged on the outer diameter side of the stator assembly 10 is radially moved by a drive unit (not shown). It is moved forward together with the outer diameter side holder 27. Thereby, a pair of positioning arrows 21 and 22 is inserted in the space part formed in the circumferential direction both sides of three pairs of terminal part pairs 17a-17c arrange | positioned at radial direction 1 row. At this time, the intermediate convex portion 23, the inner convex portion 28, and the outer convex portion 29 that are respectively provided on the opposing surfaces of the pair of positioning arrows 21 and 22 are arranged between the three terminal portion pairs 17a to 17c. Each will be located.

  In addition, the intermediate | middle convex part 23, the inner side convex part 28, and the outer side convex part 29 which were provided in the opposing surface of a pair of positioning arrows 21 and 22 are radial width smaller than the separation distance of three pairs of terminal part pairs 17a-17c. Is formed. And as shown in FIG. 10, the intermediate convex part 23 of one positioning arrow 21 is made into the holding surface 23a which consists of a plane where a radial inner side cross | intersects a substantially right angle with an opposing surface, and a radial outer side surface goes to a front-end | tip. It is set as the taper surface 23b which becomes taper as it goes. Moreover, the inner side convex part 28 is made into the holding surface 28a which consists of a plane where a radial direction inner side surface cross | intersects a substantially right angle with an opposing surface, and the radial direction outer side surface is made into the taper surface 28b which becomes taper toward the front-end | tip.

  And the intermediate convex part 23 of the other positioning arrow 22 is made into the holding surface 23a which consists of a plane where a radial direction outer side surface crosses a opposing surface substantially at right angle, and the taper surface where a radial direction inner side surface becomes taper toward the front-end | tip. 23b. In addition, the outer convex portion 29 is a holding surface 29a formed of a plane whose radially outer surface intersects the opposing surface at a substantially right angle, and a tapered surface 29b that tapers toward the tip of the radially inner surface.

  Next, as shown in FIG. 11, the pair of positioning arrows 21 and 22 are moved so as to approach each other by a drive unit (not shown), and the pair of positioning arrows 21 and 22 forms three terminal pairs 17a. ˜17c is clamped from both sides in the circumferential direction. At this time, the intermediate convex portion 23, the inner convex portion 28, and the outer convex portion 29 provided on the opposing surfaces of the pair of positioning arrows 21, 22 have tapered surfaces 23b, 28b, 29b that taper toward the tip. Then, it smoothly enters between the three pairs of terminal portions 17a to 17c. Thereby, the three pairs of terminal portions 17a to 17c are sandwiched between the opposing surfaces of the pair of positioning arrows 21 and 22, and are positioned in the circumferential direction in a state of being elastically deformed.

  Next, as shown in FIG. 12, the pair of positioning arrows 21 and 22 are moved by the drive unit (not shown) so as to move relative to each other in the radial direction. As a result, the holding portion 23a of the intermediate convex portion 23 of the one positioning arrow 21 and the holding surface 23a of the intermediate convex portion 23 of the other positioning arrow 22 allow the terminal portion pair 17b positioned in the radial intermediate portion to It is pinched and positioned. In addition, the outer diameter side of the terminal portion pair 17 a located on the innermost diameter side is positioned by the holding surface 28 a of the inner convex portion 28 of one positioning arrow 21. Further, the inner diameter side of the terminal portion pair 17 c located on the outermost diameter side is positioned by the holding surface 29 a of the outer convex portion 29 of the other positioning arrow 22.

  Next, as shown in FIGS. 13 and 14, the inner diameter side holder 26 and the outer diameter side holder 27 are moved closer to each other by a drive unit (not shown). As a result, the inner diameter side of the terminal pair 17a located on the innermost diameter side is positioned by the inner holding portion 24 of the inner diameter side holding tool 26 that comes into contact. In addition, the outer diameter side of the terminal pair 17 c located on the outermost diameter side is positioned by the outer holding portion 25 of the outer diameter side holding tool 27 that is in contact. Thereby, the three terminal pair 17a-17c arrange | positioned at radial direction 1 row will be in the state reliably positioned in the circumferential direction and radial direction in the state which elastically deformed, and complete | finishes a holding process.

  In the next welding process, the head (not shown) of the TIG welding apparatus is positioned so as to be directed to the tip portions of the three pairs of terminal portions 17a to 17c positioned as described above. Then, a welding current is passed between the pair of positioning arrows 21, 22, the inner diameter side holder 26, the outer diameter side holder 27, and the head, and arc discharge occurs. By this arc discharge, the tip portions of the terminal pair 17a to 17c, which are simply bundled the two open ends 16, are melted and joined. As a welding method, plasma welding, gas welding, laser welding, resistance welding, or the like can be employed in addition to arc welding such as TIG.

  Thereafter, the pair of positioning arrows 21, 22, the inner diameter side holder 26, and the outer diameter side holder 27 are moved back by the driving unit (not shown) to return to the initial position. Thereby, the welding process of 3 pairs of terminal part pairs 17a-17c arrange | positioned at radial direction 1 line is complete | finished. Subsequently, as shown in FIG. 15, the stator assembly 10 is rotated by a predetermined amount in the circumferential direction, and the three pairs of terminal portions 17 a to 17 c arranged in one row in the radial direction adjacent to the circumferential direction. The holding process and the welding process are repeated. As a result, a series of stator coils 13 that circulate around the stator core 11 in the circumferential direction are formed by performing a joining operation on the terminal pairs 17a to 17c in all rows arranged in the circumferential direction.

  In this embodiment, when performing the joining operation on the terminal pairs 17a to 17c in all rows arranged in the circumferential direction, the stator assembly 10 is rotated by a predetermined amount in the circumferential direction, for each row. However, conversely, the manufacturing apparatus composed of the pair of positioning arrows 21, 22, the inner diameter side holder 26 and the outer diameter side holder 27 may be rotated by a predetermined amount in the circumferential direction. Good. Further, both the stator assembly 10 and the manufacturing apparatus may be rotated in opposite directions.

  As described above, according to the stator manufacturing apparatus of the present embodiment, when predetermined terminal portions 161 to 166 of the conductor segment 15 are joined to each other, three pairs of terminal portions are provided in each row extending in the radial direction. 17a to 17c are provided with a pair of positioning arrows 21 and 22 for positioning from both sides in the circumferential direction, and the pair of positioning arrows 21 and 22 hold the terminal pair 17b located at the radial intermediate portion from both sides in the radial direction. The intermediate projection 23 is positioned. Thereby, since the terminal part pair 17b located in a radial direction intermediate part can be positioned reliably with a pair of positioning arrows 21 and 22, generation | occurrence | production of a joining defect can be reduced.

  Moreover, the intermediate | middle convex part 23, the inner side convex part 28, and the outer side convex part 29 which were provided in a pair of positioning arrows 21 and 22 are taper surfaces 23b, 28b, and 29b which taper toward the front-end | tip to radial inside or outside. Have Thus, when the three pairs of terminal portions 17a to 17c arranged in one row in the radial direction are sandwiched by the pair of positioning arrows 21 and 22, the intermediate convex portion 23 is interposed between the three pairs of terminal portions 17a to 17c. Since the inner convex portion 28 and the outer convex portion 29 smoothly enter, the circumferential positioning of the three pairs of terminal portions 17a to 17c can be performed more reliably and easily.

  Further, the pair of positioning arrows 21 and 22 are configured to relatively move in opposite directions in the radial direction to position the terminal pair 17a to 17c. Thereby, the radial positioning of the three pairs of terminal portions 17a to 17c arranged in the radial row can be more reliably and easily performed.

  Moreover, in this embodiment, the inner side holding | maintenance part 24 which hold | maintains and positions the terminal part pair 17a located in the innermost diameter side from the inner diameter side among the terminal part pairs 17a-17c arrange | positioned at radial direction, and the outermost diameter side And an outer holding portion 25 for holding and positioning the terminal portion pair 17c located at the outer diameter side. Accordingly, the radial positioning of the terminal portion pair 17a positioned on the innermost diameter side and the terminal portion pair 17c positioned on the outermost diameter side can be more reliably and easily performed. Furthermore, since the inner side holding part 24 is provided in the inner diameter side holding tool 26 and the outer side holding part 25 is provided in the outer diameter side holding tool 27, it is possible to improve the positioning of the terminal part pairs 17a and 17c.

  In the present embodiment, the two terminal portions 161 to 166 (terminal portion pairs 17a to 17c) to be joined are elastically deformed by the pair of positioning arrows 21, 22, the inner holding portion 24 and the outer holding portion 25. Is held and positioned. That is, the two terminal portions 161 to 166 (terminal portion pairs 17a to 17c) to be joined are not plastically deformed when held by the pair of positioning arrows 21, 22, the inner holding portion 24 and the outer holding portion 25. Has been. Thereby, since the damage and thinning of the insulating coating covering the outer peripheral surface of the conductor segment 15 can be prevented, the insulating property is improved.

  In this embodiment, the pair of positioning arrows 21, 22, the inner holding part 24 (inner diameter side holding tool 26), and the outer holding part 25 (outer diameter side holding tool 27) are materials excellent in conductivity and heat conductivity. It is formed with. Thereby, while having a function as an electrode, the thermal damage to an insulating film can be reduced.

  In addition, in this embodiment, although the case where the three terminal part pairs 17a-17c are arrange | positioned at radial direction 1 row is illustrated, the terminal part pair arrange | positioned at radial direction 1 row is four or more pairs. In this case, it is possible to cope with the problem by setting the number of intermediate convex portions 23 provided on the pair of positioning arrows 21 and 22 according to the number of terminal portion pairs located in the radial intermediate portion.

[Modification 1]
In the first embodiment, a set of manufacturing apparatuses including a pair of positioning arrows 21, 22, an inner diameter side holder 26 and an outer diameter side holder 27 is employed, but as shown in FIG. A plurality of sets of manufacturing apparatuses may be employed. In this way, the positioning process and the welding process of the terminal portion pairs 17a to 17c arranged in pairs in the circumferential direction can be performed simultaneously on a plurality of rows, so that productivity can be improved. .

[Embodiment 2]
As shown in FIGS. 17 and 18, the rotating electrical machine stator manufacturing apparatus according to the second embodiment includes one inner holding portion 24 and one outer holding portion 25 for either one of the pair of positioning arrows 21 and 22. They are different from those of the first embodiment in that they are integrally provided. Therefore, the detailed description about the member and structure which are common in other Embodiment 1 is abbreviate | omitted, and a different point and an important point are demonstrated. In addition, about the member which is common in Embodiment 1, the same code | symbol is used.

  In the second embodiment, the outer holding portion 25 that positions the terminal portion pair 17c on the outermost diameter side is positioned on the rear end side (upper side in FIG. It protrudes toward the facing surface. The outer holding portion 25 is provided on the rear end side from the intermediate convex portion 23 provided on the facing surface of the one positioning arrow 21 at a position separated by a separation distance between the intermediate convex portion 23 and the inner convex portion 28. .

  In addition, an inner holding portion 24 for positioning the innermost-diameter end pair 17a faces the opposite surface of the one positioning arrow 21 on the tip side (lower side in FIG. 17) of the opposite surface of the other positioning arrow 22. Projecting. The inner holding portion 24 is provided on the tip side from the intermediate convex portion 23 provided on the opposite surface of the other positioning arrow 22 at a position separated by a separation distance between the intermediate convex portion 23 and the outer convex portion 29.

  According to the manufacturing apparatus of the second embodiment configured as described above, the pair of positioning arrows 21 and 22 can reliably position the terminal portion pair 17b positioned at the radial intermediate portion. The same operations and effects as those of the first manufacturing apparatus are achieved.

  Furthermore, in the second embodiment, the inner holding portion 24 and the outer holding portion 25 are integrally provided in one of the pair of positioning arrows 21 and 22, respectively. Since the inner diameter side holder 26 and the outer diameter side holder 27 provided with the outer holding portion 25 can be eliminated, the number of jigs can be reduced.

  DESCRIPTION OF SYMBOLS 10 ... Stator assembly, 11 ... Stator core, 12 ... Slot, 13 ... Stator coil, 15 ... Conductor segment, 161-166 ... Terminal part, 17a-17c ... Terminal part pair, 21, 22 ... Positioning arrow, 23 ... Intermediate convex part, 23b ... Tapered surface, 24 ... Inner holding part, 25 ... Outer holding part, 26 ... Inner diameter side holder, 27 ... Outer diameter side holding tool.

Claims (10)

An annular stator core (11) having a plurality of slots (12) in the circumferential direction, and a plurality of conductor segments (15) inserted into the slots and extending from the axial end surface of the stator core A plurality of terminals extending from axial end surfaces of the stator core, the terminal portions (161 to 166) being joined to each other, and a stator coil (13) wound around the stator core. The two terminal portions to be joined among the portions form a pair, and the plurality of terminal portion pairs (17a to 17c) are arranged in the circumferential direction, and three or more pairs of the terminals in each row extending in the radial direction In the manufacturing apparatus of the stator for a rotating electrical machine in which the part pair is arranged,
A pair of positioning arrows (21, 22) that hold and position three or more pairs of terminal portions from both sides in the circumferential direction in each row extending in the radial direction when the predetermined terminal portions of the conductor segments are joined to each other. ), And the pair of positioning arrows includes an intermediate convex portion (23) that positions and positions the terminal portion pair (17b) positioned at the radial intermediate portion from both sides in the radial direction. Stator manufacturing equipment.   The said intermediate | middle convex part has a taper surface (23b) which becomes taper toward the front-end | tip in radial direction inner side or an outer side, The manufacturing apparatus of the stator for rotary electric machines of Claim 1 characterized by the above-mentioned.   The pair of positioning arrows are configured to relatively move in opposite directions in the radial direction so as to position the terminal portion pair. The stator for a rotating electrical machine according to claim 1 or 2, manufacturing device.   An inner holding part (24) for holding and positioning the terminal part pair (17a) located on the innermost diameter side from the inner diameter side among the terminal part pairs arranged in the radial direction, and a terminal part located on the outermost diameter side An outer holding part (25) for holding and positioning the pair (17c) from the outer diameter side, and the stator for a rotating electrical machine according to any one of claims 1 to 3, manufacturing device.   The fixing for a rotating electrical machine according to claim 4, comprising an inner diameter side holding tool (26) having the inner holding portion and an outer diameter side holding tool (27) having the outer holding portion. Child manufacturing equipment.   The said inner holding | maintenance part and the said outer side holding | maintenance part are integrally provided in any one of a pair of said positioning arrows, respectively, The manufacturing apparatus of the stator for rotary electric machines of Claim 4 characterized by the above-mentioned.   The apparatus for manufacturing a stator for a rotating electrical machine according to any one of claims 1 to 6, comprising a plurality of a pair of positioning arrows.   2. The structure according to claim 1, wherein when the predetermined terminal portions of the conductor segment are joined to each other, at least one of the pair of positioning arrows and the terminal portion pair is moved in the circumferential direction. The manufacturing apparatus of the stator for rotary electric machines as described in any one of -7.   The two terminal portions to be joined are held and positioned in a state of being elastically deformed by the pair of positioning arrows, the inner holding portion, and the outer holding portion. An apparatus for manufacturing a stator for a rotating electrical machine according to one item.   The rotation according to any one of claims 1 to 9, wherein the pair of positioning arrows, the inner holding portion, and the outer holding portion are formed of a material having excellent conductivity and heat conductivity. Electric stator manufacturing equipment.

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