JP6451993B2 - Manufacturing equipment for stators for rotating electrical machines - Google Patents

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 terminal portion pairs can be reliably positioned when the terminal portion pairs are joined. An object to be solved is to provide an apparatus for manufacturing 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. two of the terminal portion to the terminal portion pairs such a pairs to be joined of the parts (17a to 17c) are disposed at equal angular intervals on the circular ring line while being arranged in three pairs or more radially In the manufacturing apparatus of a stator for a rotating electrical machine,
The loaded in a stacked state in the axial direction relative to the stator core, before Symbol first holding member (20) disc-shaped positioning and holding the end portion pairs from circumferential sides and the second holding member (30 ) And
The third holding member is set in an axially stacked state with respect to the first holding member and the second holding member set with respect to the stator core, and performs positioning in the axial direction and the radial direction of the pair of terminal portions. A holding member (40);
With
In the first holding member, three or more pairs of terminal portions arranged in the radial direction and extending in the radial direction and penetrating in the axial direction are inserted and arranged at equal angular intervals over the entire circumference in the circumferential direction. A first communication window (24)
The second holding members are arranged at equal angular intervals over the entire circumference in the circumferential direction and provided in the same number as the number of the first communication windows, extending in the radial direction and penetrating in the axial direction. And having a second communication window (34) into which three or more pairs of terminal portions are inserted and arranged,
The third holding member has an inclined surface that is inclined so as to approach each other toward the bottom, and has a positioning recess (41) that performs positioning by pressing the tip of the terminal portion pair,
The third holding member is axially moved so that the tip of the terminal part pair is regulated at a predetermined position by the inclined surface in a state where the terminal part pair is inserted and arranged in the first communication window and the second communication window. And then move the first holding member and the second holding member relative to each other in the circumferential direction so that the terminal pair is positioned in the circumferential direction and the radial direction.
Characterized in that it comprises a.

  According to this configuration, when the terminal part pairs are joined, the terminal part pairs are set in a state of being laminated in the axial direction with respect to the terminal part pairs, and three or more terminal part pairs arranged in the radial direction are surrounded. A first holding member and a second holding member which are held and positioned from both sides in the direction, and the first and second holding members are arranged such that a plurality of terminal portion pairs arranged in the circumferential direction are inserted in each row. A plurality of first or second communication windows communicating in the axial direction are provided, and the first and second communication windows are positioned relative to each other in the circumferential direction in a state where the pair of terminal portions are inserted and arranged in the first and second communication windows. It is configured as follows. Thereby, when a terminal part pair is joined, since positioning of a terminal part pair can be reliably performed with the 1st and 2nd holding member, generation | occurrence | production of joining defect can be reduced. In addition, since three or more pairs of terminal portions arranged in the radial direction are collectively positioned by the first and second communication windows of the first and second holding members, a plurality of terminal pair pairs are arranged. Can be positioned simultaneously. Thereby, since joining work can be performed continuously and efficiently, high speed can be realized.

  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. FIG. 3 is a perspective view showing a state in which the first and second holding members are set at predetermined positions in the stator assembly when the predetermined terminal portions of the conductor segments are joined to each other in the first embodiment. FIG. 5 is an axial sectional view showing a positional relationship between the first and second holding members set in the state shown in FIG. 4 and a pair of terminal portions of conductor segments to be positioned. FIG. 5 is a perspective view showing a positional relationship between the first and second holding members set in the state shown in FIG. 4 and a pair of terminal portions of conductor segments to be positioned. FIG. 7 is a partially enlarged plan view showing a part of FIG. 6 in an enlarged manner. FIG. 5 is a perspective view illustrating a state in which a third holding member is set with respect to the stator assembly in which the first and second holding members are set in the first embodiment. FIG. 9 is an axial cross-sectional view showing a positional relationship between the first and third holding members set in the state shown in FIG. 8 and a pair of terminal portions of conductor segments to be positioned. FIG. 10 is an axial cross-sectional view showing a state where the first holding member and the second holding member are moved relative to each other in the circumferential direction after the third holding member is removed from the state shown in FIG. 9. It is a perspective view which shows the positional relationship with the terminal part pair of the conductor segment which should be positioned when the 1st and 2nd holding member is relatively moved to the state shown in FIG. FIG. 12 is a partially enlarged plan view showing a part of FIG. 11 in an enlarged manner. It is an axial direction sectional view showing the process of joining the end part pair of the conductor segment positioned by the 1st and 2nd holding members in Embodiment 1 by welding.

  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.

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 stator coils 13 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, a predetermined stator core 11 made of a plurality of steel plates stacked in the axial direction 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 this embodiment, in each row extending in the radial direction, 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 open end parts 16 of conductor segment 15 are electrically joined. As a result, a stator coil 13 is formed by connecting a plurality of conductor segments 15 in series.

  Next, a holding process and a welding process performed using the manufacturing apparatus according to the present embodiment will be described in detail with reference to FIGS. As shown in FIGS. 4, 5, 6 and 7, the manufacturing apparatus of this embodiment includes three or more pairs (three pairs in this embodiment) of terminal portions 17a to 17c arranged in one row in the radial direction. Are joined in the axially stacked state with respect to a plurality of terminal portion pairs 17a to 17c arranged in the circumferential direction, and three terminal portion pairs 17a to 17c arranged in the radial direction. The first holding member 20 and the second holding member 30 are provided for positioning from both sides in the circumferential direction.

  The first holding member 20 includes an annular inner thick part 21, an annular outer thick part 22, and one axial end side between the inner thick part 21 and the outer thick part 22 (lower side in FIG. 5). And an annular thin portion 23 provided on the side), and is formed in a disk shape as an overall shape. In the thin portion 23 of the first holding member 20, a plurality of first communication windows 24 into which three pairs of terminal portion pairs 17 a to 17 c arranged in a row in the radial direction are inserted and disposed over the entire circumference in the circumferential direction and the like. It is formed at intervals. The number of first communication windows 24 is the same as the number of rows of the three pairs of terminal portions 17a to 17c arranged in one row in the radial direction.

  The first communication window 24 penetrates the thin portion 23 in the axial direction and is formed in an oval shape that is long in the radial direction. The first communication window 24 has a sufficient escape portion to facilitate insertion and extraction of the three pairs of terminal portions 17a to 17c, and is formed to a size that ensures the strength of the thin portion 23. ing. On the one circumferential side of the first communication window 24 (left side in FIG. 7), there are two tapered first convex portions 25 projecting toward the other circumferential side of the first communication window 24 (right side in FIG. 7). It is provided one by one. When the first holding member 20 rotates and moves to the other side in the circumferential direction, the first convex portion 25 enters between the three terminal portion pairs 17a to 17c inserted and arranged in the first communication window 24. The terminal portions 17a to 17c are positioned in the circumferential direction and the radial direction with the tapered surfaces.

  The second holding member 30 has an annular inner thick portion 31, an annular outer thick portion 32, and the other axial end between the inner thick portion 31 and the outer thick portion 32 (see FIG. 5). And an annular thin portion 33 provided on the upper side), and is formed in a disk shape as an overall shape. In the thin portion 33 of the second holding member 30, a plurality of second communication windows 34 into which three pairs of terminal portion pairs 17 a to 17 c arranged in a row in the radial direction are inserted and disposed over the entire circumference in the circumferential direction and the like. Arranged at intervals. The number of second communication windows 34 is the same as the number of first communication windows 24.

  The second communication window 34 penetrates the thin portion 33 in the axial direction and is formed in an oval shape that is long in the radial direction. The second communication window 34 has a sufficient escape portion to facilitate insertion and extraction of the three pairs of terminal portions 17a to 17c, and is formed to a size that ensures the strength of the thin portion 23. ing. On the other circumferential side of the second communication window 34 (the right side in FIG. 7), there are two tapered second convex portions 35 projecting toward the other circumferential side of the second communication window 34 (the left side in FIG. 7). It is provided one by one. The second convex portion 35 and the first convex portion 25 of the first holding member 20 are provided at positions facing each other in the circumferential direction. When the second holding member 30 rotates and moves to one side in the circumferential direction, the second convex portion 35 enters between the three terminal portion pairs 17a to 17c inserted and arranged in the second communication window 34. The terminal portions 17a to 17c are positioned in the circumferential direction and the radial direction with the tapered surfaces.

  The first and second holding members 20 and 30 are stacked in the axial direction with respect to the plurality of terminal portion pairs 17a to 17c arranged in the circumferential direction when the terminal portion pairs 17a to 17c are joined. Set. In this case, the thin portion 23 of the first holding member 20 and the thin portion 33 of the second holding member 30 are in contact with or close to each other in the axial direction, and the first communication window 24 and the second holding member 30 of the first holding member 20 are in contact. The second communication window 34 is arranged in a state of being substantially in communication with the axial direction. Moreover, the 1st and 2nd holding members 20 and 30 function also as an electrode which supplies a welding current. Accordingly, the first and second holding members 20 and 30 are formed of a material having excellent conductivity and heat transfer properties such as copper, iron, tungsten, and aluminum.

  In addition, as shown in FIGS. 8 and 9, the manufacturing apparatus of the present embodiment includes a third holding member 40 that positions the three pairs of terminal portions 17 a to 17 c arranged in the radial direction in the axial direction and the radial direction. It has. On the back surface (lower side surface of FIGS. 8 and 9) of the third holding member 40, the ends of the three pairs of terminal portions 17 a to 17 c arranged in a row in the radial direction are pressed in the axial direction so A plurality of positioning recesses 41 for positioning in the axial direction and the radial direction of 17a to 17c are formed. The positioning recess 41 has inclined surfaces that are inclined so as to approach each other toward the bottom, and corresponds to the three pairs of terminal portions 17a to 17c arranged in the radial direction, and 3 in the radial direction. It is formed one by one. The number of positioning recesses 41 arranged in the circumferential direction is the same as the number of circumferential arrangements of the three pairs of terminal portions 17a to 17c arranged in one row in the radial direction.

  In the holding step performed using the above manufacturing apparatus, first, the stator assembly 10 processed into the shape shown in FIG. 1 is fixed on a work table by a fixing device (not shown) or the like. Next, as shown in FIGS. 4 to 7, the drive unit (not shown) is actuated on the plurality of terminal unit pairs 17 a to 17 c arranged in the circumferential direction of the stator assembly 10. The 1st and 2nd holding members 20 and 30 are set to the state laminated | stacked on the axial direction. At this time, the three pairs of terminal portions 17a to 17c arranged in one row in the radial direction are inserted and arranged in the first and second communication windows 24 and 34 of the first and second holding members 20 and 30, respectively.

  Next, as shown in FIGS. 8 and 9, a first driving unit (not shown) is actuated on the stator assembly 10 on which the first and second holding members 20 and 30 are set. And the 3rd holding member 40 is set to the state laminated | stacked on the axial direction from the upper side of the 2nd holding members 20 and 30, and was laminated | stacked. At this time, the tips of the three pairs of terminal portions 17a to 17c inserted and arranged in the first and second communication windows are fitted into the positioning recesses 41 of the third holding member 40, and the third holding member 40 pivots the shaft. Pressed in the direction. Thereby, the front-end | tip of each terminal part pair 17a-17c is positioned by the inclined surface of the positioning recessed part 41 at a predetermined position, and is positioned to an axial direction and radial direction.

  In this state, by operating a drive unit (not shown), the first and second holding members 20 and 30 are moved relative to each other in the circumferential direction. That is, in the case of the present embodiment, the first holding member 20 is rotated in the direction of arrow X in FIG. 8, and the second holding member 30 is rotated in the direction of arrow Y in FIG. Accordingly, as shown in FIGS. 11 and 12, each of the pair of terminal portions 17 a to 17 c whose tips are positioned in the axial direction and the radial direction by the third holding member 40 has the first and second convex portions 25 and 35. By entering between the root portions of the three pairs of terminal portions 17a to 17c arranged in one row in the radial direction, the first and second convex portions 25 and 35 are positioned in the circumferential direction and the radial direction. Thereby, each terminal part pair 17a-17c is simultaneously hold | maintained and positioned by the 1st and 2nd holding members 20 and 30 in the elastically deformed state. Since the positioning by the first and second holding members 20 and 30 is performed in a state where the positioning by the third holding member 40 is performed, ease and certainty are ensured.

  Next, by operating the drive unit (not shown), the third holding member 40 that has been set is moved backward to release the positioning of each terminal unit pair 17a to 17c by the positioning recess 41 (FIGS. 10 to 10). 12) and proceed to the next welding step.

  In the next welding process, the drive part (not shown) is operated with respect to all the terminal part pairs 17a-17c positioned as described above, whereby the head 50 of the TIG welding apparatus is connected to each terminal part pair 17a. The welding work is performed by arranging so as to be directed to the tip of 17c. As shown in FIG. 13, this welding operation is performed with respect to the terminal pair 17a to 17c inserted and arranged in each of the first and second communication windows 24 and 34 and arranged in three pairs in the radial direction. Do this in sequence for each column. In this embodiment, it carries out in order toward the inner diameter side from the terminal part pair 17c located in the outermost diameter side among three pairs of terminal part pairs 17a-17c arrange | positioned at radial direction 1 row. In this case, a welding current is passed between the first and second holding members 20 and 30 and the head 50 to cause arc discharge. By this arc discharge, the respective tip end portions of the terminal portion pairs 17a to 17c, which are simply bundled the two terminal portions 161 to 166 to be bonded, are melted and bonded.

  After the welding operation of the three pairs of terminal portions 17a to 17c arranged in the first row in the radial direction is completed, the drive unit (not shown) is operated to move the head 50 of the TIG welding apparatus in the circumferential direction. Then, the welding operation of the three pairs of terminal portions 17a to 17c arranged in one row in the radial direction adjacent in the circumferential direction is performed in the same manner as described above. Thereafter, the joining operation similar to the above is repeated, and the welding operation of the terminal portion pairs 17a to 17c arranged on the entire circumference is completed. As a result, a series of stator coils 13 are formed in which the plurality of conductor segments 15 are connected by welding to circulate around the stator core 11 in the circumferential direction. 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, by operating a drive unit (not shown), the head 50 of the TIG welding apparatus is retracted and retracted. Next, by actuating a drive unit (not shown), the first and second holding windows 20 and 30 are rotated in the opposite directions to the first and second communication windows 24 and 34. After the positioning by is canceled, the first and second communication windows 24 and 34 are removed from the stator assembly 10, and the entire operation process is completed.

  In addition, in this embodiment, when joining operation | movement with respect to the terminal part pair 17a-17c of all the rows arranged in the circumferential direction, the head 50 of a TIG welding apparatus is moved to the circumferential direction, and it turns to every row. However, conversely, the stator assembly 10 may be rotated by a predetermined amount in the circumferential direction. Moreover, you may make it rotate both the stator assembly 10 and the head 50 of a TIG welding apparatus to a mutually reverse direction.

  As described above, according to the stator manufacturing apparatus of the present embodiment, the first and second holding members 20 and 30 have the plurality of terminal portion pairs 17a to 17c arranged in the circumferential direction inserted and arranged for each row. A plurality of first or second communication windows 24, 34 communicated in the axial direction, and in a state in which the terminal pairs 17 a to 17 c are inserted and arranged in the first and second communication windows 24, 34. It is configured to move relative to the opposite side for positioning. Thereby, when terminal part pair 17a-17c is joined, since positioning of terminal part pair 17a-17c can be performed reliably with the 1st and 2nd holding members 20 and 30, generation | occurrence | production of a joint defect is reduced. can do. Further, the three pairs of terminal portions 17a to 17c arranged in one row in the radial direction are collectively positioned by the first and second communication windows 24 and 34 of the first and second holding members 20 and 30. Therefore, the terminal pairs 17a to 17c in a plurality of rows can be positioned simultaneously. Thereby, since joining work can be performed continuously and efficiently, high speed can be realized.

  The first and second holding members 20, 30 are first and second convex portions 25 that position the terminal portion pairs 17 a to 17 c inserted and arranged in the first and second communication windows 24, 34 in the radial direction. , 35. Thereby, when the 1st and 2nd holding members 20 and 30 are moved relative to each other in the circumferential direction, the three pairs of terminals in which the first and second convex portions 25 and 35 are arranged in one row in the radial direction. By entering between the root portions of the pair of portions 17a to 17c, the terminal portions 17a to 17c can be reliably positioned in the circumferential direction and the radial direction on the tapered surfaces of the first and second convex portions 25 and 35.

  Further, the first and second holding members 20 and 30 are configured to simultaneously position the terminal portion pairs 17a to 17c inserted and arranged in the first and second communication windows 24 and 34. Thereby, since the 1st and 2nd holding members 20 and 30 to be positioned can be integrated, the number of members can be reduced. Further, the first and second holding members 20 and 30 are formed in a disk shape, and the first and second communication windows 24 and 34 are arranged over the entire circumference in the circumferential direction. The integration of the second holding members 20 and 30 and the reduction in the number of members can be advantageously realized.

  Moreover, the 1st and 2nd holding members 20 and 30 are formed with the material excellent in electroconductivity and heat conductivity. Thereby, while having a function as an electrode, the thermal damage to the insulating film which coat | covers the outer peripheral surface of the conductor segment 15 can be reduced.

  Moreover, in this embodiment, the two terminal parts 161-166 (terminal part pair 17a-17c) which should be joined are hold | maintained and positioned in the state elastically deformed by the 1st and 2nd holding members 20 and 30. As shown in FIG. That is, the two terminal portions 161 to 166 (terminal portion pairs 17a to 17c) to be joined are in a state in which they are not plastically deformed when held by the first and second holding members 20 and 30. 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.

  Moreover, in this embodiment, the positioning recessed part 41 which presses the front-end | tip of three terminal part pairs 17a-17c arrange | positioned at radial direction and positions the terminal part pair 17a-17c in the axial direction and radial direction is formed. The third holding member 40 is provided. Therefore, when positioning the terminal portion pairs 17a to 17c with the first and second holding members 20 and 30, since the positioning by the third holding member 40 can be performed, the first and second holding members are used. Positioning by the members 20 and 30 can be performed easily and reliably. The positioning by the first and second holding members 20 and 30 and the positioning by the third holding member 40 may be performed simultaneously.

[Other Embodiments]
The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

  For example, in the above embodiment, the welding operation is performed with the head 50 of one TIG welding apparatus, but the plurality of TIG welding apparatus heads 50 are arranged at predetermined intervals in the circumferential direction, and the diameter is set. You may make it weld simultaneously several rows of 3 pairs of terminal part pairs 17a-17c arrange | positioned at 1 direction line. If it does in this way, the work efficiency of welding can be improved and productivity can be aimed at.

  Moreover, in said embodiment, although the 1st and 2nd holding members 20 and 30 were formed in the disk shape which is a shape over the perimeter of a circumferential direction, the thing of the magnitude | size divided | segmented into the circumferential direction is 1 You may make it use it above.

  In the above embodiment, a case where three pairs of terminal portions 17a to 17c are arranged in one row in the radial direction is illustrated, but four or more terminal pairs are arranged in one row in the radial direction. The first and second communication windows 24, 34 of the first and second holding members 20, 30 according to the number of terminal portion pairs located in the radially intermediate portion. This can be dealt with by changing the number of the second convex portions 25 and 35.

  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, 20 ... 1st holding member, 24 ... 1st communicating window, 25 ... 1st convex part, 30 ... 2nd holding member, 34 ... 2nd communicating window, 35 ... 2nd convex part, 40 ... 3rd holding member, 41 ... Positioning recessed part.

Claims (7)

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. two of the terminal portion to the terminal portion pairs such a pairs to be joined of the parts (17a to 17c) are disposed at equal angular intervals on the circular ring line while being arranged in three pairs or more radially In the manufacturing apparatus of a stator for a rotating electrical machine,
The loaded in a stacked state in the axial direction relative to the stator core, before Symbol first holding member (20) disc-shaped positioning and holding the end portion pairs from circumferential sides and the second holding member (30 ) And
The third holding member is set in an axially stacked state with respect to the first holding member and the second holding member set with respect to the stator core, and performs positioning in the axial direction and the radial direction of the pair of terminal portions. A holding member (40);
With
In the first holding member, three or more pairs of terminal portions arranged in the radial direction and extending in the radial direction and penetrating in the axial direction are inserted and arranged at equal angular intervals over the entire circumference in the circumferential direction. A first communication window (24)
The second holding members are arranged at equal angular intervals over the entire circumference in the circumferential direction and provided in the same number as the number of the first communication windows, extending in the radial direction and penetrating in the axial direction. And having a second communication window (34) into which three or more pairs of terminal portions are inserted and arranged,
The third holding member has an inclined surface that is inclined so as to approach each other toward the bottom, and has a positioning recess (41) that performs positioning by pressing the tip of the terminal portion pair,
The third holding member is axially moved so that the tip of the terminal part pair is regulated at a predetermined position by the inclined surface in a state where the terminal part pair is inserted and arranged in the first communication window and the second communication window. And then move the first holding member and the second holding member relative to each other in the circumferential direction so that the terminal pair is positioned in the circumferential direction and the radial direction.
An apparatus for manufacturing a stator for a rotating electrical machine, comprising:   The first and second holding members have first and second convex portions (25, 35) for positioning the pair of terminal portions inserted in the first and second communication windows in the radial direction. The manufacturing apparatus of the stator for rotary electric machines according to claim 1 characterized by the above-mentioned.   The stator for a rotating electrical machine according to claim 1 or 2, wherein the first and second holding members simultaneously position the pair of terminal portions inserted and arranged in the first and second communication windows. manufacturing device. The said 1st and 2nd holding member is formed with the material excellent in electroconductivity and heat conductivity, The manufacturing apparatus of the stator for rotary electric machines as described in any one of Claims 1-3 characterized by the above-mentioned. . The terminal unit pair, the rotary electric machine stator according to any one of claims 1 to 4, characterized in that it is positioned by being held in a state of being elastically deformed by said first and second holding members manufacturing device. It said first and second holding member is formed in a disk shape, of claims 1 to 5, each said first or second communication window, characterized in that it is arranged over the entire circumference The manufacturing apparatus of the stator for rotary electric machines as described in any one.   The drive unit moves the third holding member backward in the axial direction after the first holding member and the second holding member are moved relative to each other in the circumferential direction to position the terminal pair. ,
  The manufacture of a stator for a rotating electrical machine according to any one of claims 1 to 6, further comprising a welding device that performs a joining process of the distal ends of the pair of terminal portions after the third holding member is retracted. apparatus.

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