JP2023153510A - Fixture for manufacturing stator - Google Patents

Abstract

To provide a fixture for manufacturing a stator that positions a wire material to a stator core.SOLUTION: A first fixture main body 21 for positioning a wire material 17 inserted into a slot between teeth of a stator core 10 can be contacted to a shoulder part of the stator core 10. First magnets 31 and 32 embedded into the first fixture main body 21 suck the first fixture main body 21 to the stator core 10 in a neighbor of a first lower surface 23 to temporally fix the first fixture main body 21 to the stator core 10. Second magnets 33 and 34 are embedded into the first fixture main body 21. Third magnets 61 and 62 embedded into a second fixture main body 51 have a relationship for being sucked with the second magnets 33 and 34, and can temporally fix the second fixture main body 51 to the first fixture main body 21. Thus, since the wire material 17 is positioned and temporally fixed to the stator core 10, it can be appropriately processed in a twisting process and a welding step to manufacture the stator.SELECTED DRAWING: Figure 4

Description

The present invention relates to a jig used when manufacturing a stator for an electric motor, and a method for manufacturing a stator using the jig.

Conventionally, when manufacturing a stator for an electric motor, it has been necessary to stabilize the position of the segment coil relative to the stator core when processing or transporting the segment coil inserted between the teeth of the stator core.

The twisting device shown in Patent Document 1 includes a plurality of cylindrical twisting jigs, each of the twisting jigs including a plurality of gripping parts and a plurality of notches, and at least a part of the plurality of notches. The bottom portion is formed so that the tips of the leg portions of the plurality of segment coils protruding from the plurality of slots of the stator core are fitted into the bottom portion.

However, there is no known device that utilizes the characteristics of magnets when positioning the segment coils relative to the stator core when twisting or TIG welding the tips of the legs of the segment coils that protrude from multiple slots in the stator core. Not yet.

JP 2019-187072 Publication

In the stator manufacturing process, when multiple segment conductors are inserted into the slots between the teeth of the stator core, the legs of the segment conductors are twisted, temporarily fixed, transported, and the tips of the legs of the segment conductors are welded. In this case, it was necessary to position or temporarily fix each leg of the segment conductor to the stator core.

The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a stator manufacturing jig for positioning segment conductors in a stator core, and a stator manufacturing method using the same.

A stator manufacturing jig according to a first aspect of the present invention is a stator manufacturing jig for positioning a wire rod (17) to be inserted into a slot between teeth of a stator core (10), and comprises a shoulder portion ( 11), a first jig body (21) having a first lower surface (23) and a first upper surface (22) that can come into contact with the jig body (21), and a second lower surface (53) that can come into contact with the first upper surface a second jig main body (51); the first jig is embedded in the first jig main body, and when the first lower surface contacts the shoulder of the stator core, the first jig is connected to the stator core in the vicinity of the first lower surface; a first magnet (31, 32) that sucks the tool body and temporarily fixes the first jig main body to the stator core; and a second magnet (33, 34) embedded in the first jig main body; The first jig main body is embedded in the second jig main body, and is in an attractive relationship with the second magnet when the second lower surface is brought into contact with the first upper surface of the first jig main body. A configuration is adopted in which third magnets (61, 62) capable of temporarily fixing the second jig main body are provided.
Here, the above-mentioned wire refers to a segment conductor. Hereinafter, the segment conductor will be referred to as a wire.

A stator manufacturing method according to a second invention of the present invention is a stator manufacturing method using the stator manufacturing jig of the first invention, in which a wire is inserted into a slot (13) between teeth (12) of a stator core (10). (17); a step of abutting the first jig against the shoulder of the stator core; and a step of abutting the first jig on the first upper surface of the first jig with the second lower surface of the second jig main body (51). (53) includes the step of twisting and temporarily fixing the wire to the stator core when abutting the wire.

According to the stator manufacturing jig of the present invention, the wire can be positioned with respect to the stator core after the wire is inserted into the slot between the teeth of the stator core. Thereby, when manufacturing the stator, the stator core and the wire rod can be made less susceptible to the effects of processing loads, vibrations during transportation, and the like.

According to the stator manufacturing jig of the present invention, by taking advantage of the characteristics of the material of the stator core and by utilizing Coulomb's law, the stator core and the resin jig body are connected instead of directly attaching the magnet to the stator core corresponding to the workpiece. By sandwiching the resin in between, a distance is secured between the stator core and the first magnet, and the first jig main body and the second jig main body are temporarily fixed to the stator core, and the first jig main body and the second jig main body are temporarily fixed to the stator core. By temporarily fixing the main bodies to each other, the position of the wire rod relative to the stator core can be stabilized, and the wire rod can be easily twisted.

According to the stator manufacturing jig of the present invention, it is possible to stably maintain the position of the wire with respect to the stator core even during the transportation process after twisting and the welding process of electric wiring, so the work in the stator manufacturing process is possible. Stators with improved performance and stable quality can be manufactured at high speed.

In the stator manufacturing process, the two processes of twisting the wire rod inserted into the slot between the teeth of the stator core and welding the end of the wire rod eliminate the need for positioning and restraint mechanisms for a single wire, and also eliminate the need for fastening work. , the difficulty and cost of equipment are reduced.
According to the stator manufacturing jig of the present invention, temporary fixing and positioning can be achieved at low cost by utilizing the magnetic properties of the steel material that constitutes the stator.

FIG. 1 is a perspective view showing a stator manufacturing jig according to a first embodiment of the present invention. FIG. 1 is a front view showing a wire rod according to a first embodiment of the present invention. FIG. 3 is a view taken in the direction of arrow III shown in FIG. 2; FIG. 1 is a schematic cross-sectional view showing how the stator manufacturing jig according to the first embodiment of the present invention is used. A sectional view taken along the line V-V in FIG. 1. FIG. 3 is a cross-sectional view showing the positional relationship between the first jig and the stator core according to the first embodiment of the present invention. FIG. 7 is a perspective view showing how the first jig is used in the second embodiment of the present invention. FIG. 8 is a perspective view showing a state in which the second jig is in contact with the first jig shown in FIG. 7; FIG. 9 is a perspective view taken along the line IX-IX in FIG. 8; FIG. 9 is a perspective view taken along the line XX in FIG. 8;

Hereinafter, a stator manufacturing jig according to an embodiment of the present invention will be described based on the drawings. In addition, in a plurality of embodiments, substantially the same constituent parts are given the same reference numerals, and description thereof will be omitted.

(First embodiment)
A first embodiment of the present invention will be described based on FIGS. 1 to 6.

(stator core)
First, a stator core using the stator manufacturing jig according to this embodiment will be described.

As shown in FIGS. 2 to 4, the stator core 10 is formed by laminating a large number of core plates, and has a basic shape of a cylinder. A large number of teeth 12 extending radially inward are formed on the inner wall of the core body at equal intervals in the circumferential direction. A wire rod 17 corresponding to a segment conductor is inserted into a slot 13 formed between adjacent teeth 12 .
The wire rods include wire rods that connect a wire rod protruding from a slot and a wire rod protruding from another slot with a crossover wire, wire rods that are drawn out from a slot and extend as legs, and the like.
A portion of the wire rod 17 protruding from the upper surface 14 of the stator core 10 becomes a leg portion, and tips 181, 182, 183, and 184 face upward in FIG. 1.
In FIG. 1, a first jig 20 and a second jig 50 are used on the stator core to partially contact, twist, position, and temporarily fix each wire 17 to the appropriate material at the appropriate location. do.

(Jig configuration)
Next, the jig 1 of this embodiment will be explained.
The jig 1 includes a first jig 20 and a second jig 50. FIG. 2 shows an assembly of wire rods 17 that fit into the inter-teeth slots of the stator core, and shows the form of the wire rods 17 before being twisted, with the stator core omitted. In FIG. 3, the broken line indicates the outline of the stator core 10.

As shown in FIGS. 1 and 5, the stator manufacturing jig 1 according to the present embodiment of the present invention includes a first jig 20 that can come into contact with the shoulder of the stator core 10, and an upper surface of the first jig. It is composed of a second jig 50 that can come into contact with.

Next, the first jig 20, which corresponds to the lower jig, will be explained based on FIGS. 1 and 4 to 6.

The first jig 20 includes a first jig main body 21, first magnets 31 and 32, and second magnets 33 and 34.
The first jig main body 21 extends in an arc shape so as to correspond to the shape of the upper surface 14 of the stator core 10, and has an inner circumference that can come into contact with the first upper surface 22, the first lower surface 23, and the outer peripheral side surface 19 of the stator core 10. It has a surface 26, a first lower surface 24, an inner circumferential surface 25, and an outer circumferential surface 27.

The lower surface of the first jig main body 21 constitutes a step, and is composed of a first lower surface 23 and a first lower surface 24 that projects downward with a step on the radially outer side of the first lower surface 23. As a result, the first lower surface 23 of the first jig main body 21 contacts the upper surface 14 of the shoulder portion 11 of the stator core 10, and the inner circumferential surface 26 abuts the outer circumferential side surface 19, so that the first jig 20 can be fitted and positioned.

The inner circumferential surface 26 of the first jig main body 21 has convex portions 47 and 48 that can be engaged with concave portions 15 and 16 formed in the outer circumferential side surface 19 of the stator core 10, which will be described later. When the convex portions 47 and 48 engage with the concave portions 15 and 16 of the stator core 10, the first jig main body 21 positions the stator core 10 in the circumferential direction.

The first jig main body 21 further has first holes 35 and 36 that open on the upper surface 22 and second holes 37 and 38 that open on the lower surface 23. It includes urethane 41, 42 that presses the first magnets 31, 32, and urethane 43, 44 that presses the second magnets 33, 34 fitted in the second holes 37, 38.

The second jig 50, which corresponds to the upper jig, will be explained based on FIGS. 1 and 4 to 6.

The second jig 50 includes a second jig main body 51 and third magnets 61 and 62.
The second jig main body 51 extends in an arc shape like the first jig main body 21, and has a second upper surface 52, a second lower surface 53, an inner circumferential surface 54, and an outer circumferential surface 55.

The second jig main body 51 has two convex portions 81 and 82 on its inner peripheral surface. The convex portions 81 and 82 of the second jig main body 51 can come into contact with the wire rod 17 and can guide the wire rod 17 as shoulders. Thereby, deformation of the wire 17 can be prevented.

The second jig main body 51 has a convex portion 75 extending radially outward from the outer circumferential surface 55, and has a concave portion 76 extending radially inward outside the convex portion 75 at its maximum diameter. When the second jig main body 51 is placed on the first jig main body 21, the wire 171 is inserted radially outward between the upper surface of the first jig main body 21 and the lower surface of the second jig main body 51, and 76 and projects the tip 181 upward.

The second jig main body 51 also has recesses 78 and 79 extending radially inward from the outer peripheral surface 55.
When the second jig main body 51 is placed on the first jig main body 21, the wire rods 172 and 173 are inserted radially outward between the upper surface of the first jig main body 21 and the lower surface of the second jig main body 51. , are engaged in the recesses 78 and 79, and the tips 182 and 183 protrude upward.

In the recesses 76, 78, and 79 of the second jig main body 51, one wire of each leg of the wire rod corresponding to the output wire is inserted from the lower surface side to the upper surface side, and the tip end 18 of the wire rod protrudes upward. By guiding and protecting the legs of the wire in the recesses 76, 78, and 79, deformation of the legs is prevented.

As shown in FIG. 5, the second jig main body 51 has a recess 85 in the second lower surface 53 through which the wire 17 can be inserted. The wire rod 17 inserted through the recess 85 is sandwiched between the first jig main body 21 and the second jig main body 51, and the leg portions of the wire rod 17 are positioned.

The second jig main body 51 further includes third urethane 65 and 66 that hold third magnets 61 and 62, which will be described later, that are fitted into third holes 63 and 64 that open on the top surface.

The first magnets 31 and 32 are disc-shaped and are embedded in first holes 35 and 36 that open in the first upper surface 22 of the first jig main body 21. The upper parts of the first urethane 41 and 42 embedded in the first holes 35 and 36 are located above the first magnets 31 and 32 embedded in the first holes 35 and 36, respectively, on the first upper surface 22 of the first jig main body 21. This is the height level. When the first jig main body contacts the upper surface of the stator core 10 and the convex portions 47 and 48 engage with the concave portions 15 and 16 of the stator core 10, the stator core 10 and the first magnets 31 and 32 are attracted to each other by the attractive force of the magnets, A first jig is positioned and temporarily fixed to the stator core 10.

The second magnets 33 and 34 are disk-shaped and are embedded in second holes 37 and 38 that are open to the first lower surface 23 and the first lower surface 24, respectively. The lower part of the second urethane 43, 44 which is buried in the second hole 37, 38 is located below the second magnet 33, 34 which is buried in the second hole 37, 38. This is the height level of the lower surface 23.

The third magnets 61 and 62 are disc-shaped and are embedded in third holes 63 and 64 that open in the second upper surface 52 of the second jig main body 51. The upper part of the third urethane 65, 66 buried in the third hole 63, 64 is from above the third magnet 61, 62 buried in the second jig main body 51 buried in the third hole 63, 64. This is the height level of the second upper surface 52 of the second jig main body 51.
When the second jig main body 51 comes into contact with the upper surface of the first jig main body 21, the second magnets 33, 34 and the third magnets 61, 62 are attracted to each other by magnetic force, and the second jig main body 21 is moved against the first jig main body 21. The main body 51 is positioned and temporarily fixed.

In this embodiment, second magnets 33, 34 and third magnets 61, 62 are provided at positions No. 1 (#1) and No. 4 (#4) in the circumferential direction shown in the arrow direction in FIG. First magnets 31 and 32 are provided at positions No. (#2) and No. 3 (#3).

(Jig manufacturing method)
In the first jig 20, the first magnets 31 and 32 are fitted into the first holes 35 and 36 of the first jig main body 21, and then the urethane 41 and 42 are inserted. Similarly, the second magnets 33 and 34 are fitted into the second holes 37 and 38 of the first jig main body 21, and then the urethane 43 and 44 are inserted.

In the second jig 50, the third magnets 61 and 62 are fitted into the third holes 63 and 64 of the second jig main body 51, and then the urethane 65 and 66 are inserted.

(Manufacture of stator)
When manufacturing the stator of this embodiment, as shown in FIG. 1, wire rods 17 corresponding to segment conductors are inserted into slots 13 between a large number of teeth 12 extending radially inward on the inner wall of the stator core 10.
The legs of the four wire rods 171, 172, 173, and 174 of the wire rods 17 protruding from the slot 13 extend as a single wire, and the tips 181, 182, 183, and 184 extend upward.

One of the wire rods 171 has a tip 181 extending to the outer diameter with the largest diameter, and the tips 182 and 183 of the two wire rods 172 and 173 extend to the outer diameter of the second largest diameter.

One wire 174 has a tip 184 extending to the third outer diameter.

Tips 181, 182, 183, and 184 of the wire rods 17 of the stator core are TIG welded in a step after the wire rod twisting step using the jig 1. At this time, in the stator manufacturing jig of the present invention, the wire rod 171, The stator core 10 and the wire rod 17 can be transported by temporarily fixing the single wires 172, 173, and 174.

The steps up to temporarily fixing the wire rod using the stator manufacturing jig 1 of the present invention will be explained.

(Insertion of wire)
Insert the wire into the slot between the teeth of the stator core.

(Abutment of first jig)
First, with the wire 17 inserted into the slot of the stator core 10, the first jig 20 is brought into contact with the outer peripheral surface 19 of the stator core 10.
At this time, when the positioning protrusions 47 and 48 are engaged with the recesses 15 and 16 corresponding to the core grooves of the stator core 10, the relative position of the first jig 20 in the circumferential direction with respect to the stator core 10 is determined, and the upward movement from the slot 13 is determined. The leg portions of some of the wire rods 171, 172, and 173 that protrude are guided radially outward via the first upper surface 22 of the first jig 20.

The first jig 20 is attracted to the upper surface 14 of the stator core 10 by the magnetic attraction force of the first magnets 31 and 32, and is temporarily fixed to the shoulder portion of the stator core 10.

(Abutment of second jig)
Next, the lower surface 53 of the second jig body 51 is brought into contact with the upper surface 22 of the jig body 21 of the first jig 20 . When the lower surface 53 of the second jig main body 51 is brought into contact with the upper surface 22 of the first jig 20, the second magnets 33 and 34 and the third magnets 61 and 62 are attracted to each other by the attractive force of the magnets, and the first jig The second jig 50 is positioned with respect to 20. At this time, some of the wire rods 17 are twisted with respect to the stator core 10, and a large number of wire rods 17 are temporarily fixed to the stator core 10.

Then, as shown in FIGS. 1, 4, and 5, the first jig 20 and the second jig 50 are stacked on the upper surface 14 of the stator core 10, and the wire rod 17 is temporarily fixed to the stator core 10. At this time, the first jig 20 and the second jig 50 sandwich the plurality of wire rods 171, 172, and 173 vertically. The plurality of wire rods 171, 172, and 173 are inserted radially outward through the gap between the upper surface 22 of the first jig 20 and the lower surface 53 of the second jig 50. The plurality of wire rods 171 , 172 , and 173 are sandwiched between the first jig 20 and the second jig 50 to temporarily fix the wire rod 17 to the stator core 10 via the jig 1 . Further, the tips 181, 182, 183 of the plurality of wire rods 171, 172, 173, which are the single wires of the stator, are locked in the recesses 76, 78, 79 and projected upward. The wire 174, which is a single wire, is twisted and guided in the radially inward direction of the first jig 20 and the second jig 50, so that the tip 184 protrudes upward.

According to this embodiment, the suction force of the first, second, and third magnets temporarily fixes the wire to the stator core 10 and positions the wire between the shafts, thereby improving the workability and positioning accuracy of processing or welding. I can do it. In addition, it is less susceptible to the effects of machining loads and vibrations during transportation, suppresses the portion near the shoulder of a single wire, and prevents deformation of the wire corresponding to the segment conductor during machining.
Further, according to this embodiment, the distance between the magnets and between the magnets and the stator core is ensured by sandwiching the resin between the magnets instead of directly attaching the magnets to each other, resulting in good workability.

(Transportation of stator core)
The wire rod 17 is transported while being temporarily fixed to the stator core 10 by the jig 1. Therefore, the wire rods 17 corresponding to the segment conductors with respect to the stator core 10 can be properly positioned without coming loose. During transportation, the wire rods inserted into the slots of the stator core 10 are temporarily fixed by the jig 1 and transported.

(Wire rod welding)
In the welding process after transportation, the tip 18 of the wire 17 is welded while the wire 17 is temporarily fixed to the stator core 10 using the jig 1. The workability of processing or welding and the accuracy of positioning can be improved. By suppressing one wire of the wire rod 17 at a location near the shoulder of the stator core 10, deformation of the wire rod corresponding to the segment conductor during processing and welding can be prevented.

According to this embodiment, in a processing process in which a stator core and an assembly of a plurality of segment conductors are used as a workpiece, it is necessary to externally restrain or position the wire rods corresponding to various segment conductors inserted into the inter-teeth slots. The restraint and positioning jig 1 temporarily fixes the stator between the first jig and the first and second jigs, and the first, second, and third magnets mutually attract the wire rod. The stator can be manufactured by properly guiding the workpiece to a desired position and appropriately processing the workpiece in the stator core and wire twisting process, TIG welding process, etc.
Even if the axes of the first jig 20 and the second jig 50 are slightly misaligned, a force is exerted in the direction in which the axes attract each other due to the attractive force between the magnets, so the auxiliary work function during work is activated, and the positioning function and temporary fixation are activated. Both functions can be achieved.
In the two steps of twisting and welding the ends of the segment conductors during stator manufacturing, single-line positioning of the segment conductors and a restraining mechanism are no longer necessary, and the difficulty level of the equipment can be reduced.

According to the stator manufacturing jig of this embodiment, during manufacturing of the stator, the position of the segment conductor relative to the stator core is temporarily fixed until the segment conductor corresponding to the output line is welded among the segment conductors inserted into the slots between the teeth of the stator core. can do. Therefore, when welding the electric wiring in the stator coil, connection by TIG welding or the like can be appropriately performed.

(Second embodiment)
In the second embodiment of the present invention, FIGS. 7 to 10 show an embodiment in which the positional relationship of a plurality of magnets arranged in the circumferential direction within the jig main body is changed compared to the first embodiment.
The second embodiment is an embodiment in which first magnets 311, 321 are provided at positions 1 and 3 in the circumferential direction of the stator core, and second magnets 331, 341, and a third magnet are provided at positions 2 and 4. be.

As shown in FIG. 8, urethane 651, 661 is embedded in the upper part of a third magnet (not shown in FIG. 8) that is embedded in a hole formed in the upper surface of the second jig main body 51.
As shown in FIG. 9, urethane 421 is embedded above the first magnet, which is embedded in a hole formed in the upper surface of the first jig main body 21. As shown in FIG.
When the first jig main body 21 is brought into contact with the stator core 10, the first magnet 321 and the stator core 10 are attracted by the attractive force of the magnet, and the first jig main body 21 is temporarily fixed to the stator core 10.
As shown in FIG. 10, the second magnet 341 and the third magnet 621 are attracted and temporarily fixed by the attractive force of the magnets, urethane 441 is embedded in the lower part of the second magnet 341, and urethane 661 is embedded in the upper part of the third magnet 621. Buried.

In the second jig 50, a wire 173 is inserted into a recess 85 formed on the lower surface of the second jig main body 51. This wire rod 173 extends from the radially inward side of the jig 1 in the radially outward direction.

Other basic configurations of the second embodiment are the same as those of the first embodiment.

(Other embodiments)
In the present invention, the positional relationship between the first magnet, the second magnet, and the third magnet in the above embodiment is not limited to that in the above embodiment.
Regarding the facing surfaces of the first jig main body and the second jig main body, the shape of the abutting surface and the non-contact surface having a gap may be any shape in the present invention.

In the above embodiments, the motor is a three-phase brushless motor. In other embodiments, the motor section is not limited to a three-phase brushless motor, but may be any motor. Further, the motor section is not limited to a motor (electric motor), but may be a generator, or a so-called motor generator having both the functions of an electric motor and a generator.

As described above, the present invention is not limited to the above-described embodiments, and can be implemented in various forms without departing from the gist thereof.
In the stator manufacturing jig of the first aspect of the present invention described above, the first jig main body has an inner circumferential surface (26) that can make surface contact with the outer circumferential side surface (19) of the shoulder portion of the stator core. You can also do this.
Here, the first jig main body has convex portions (47, 48) on the inner circumferential surface that can fit into the recesses (15, 16) formed on the outer circumferential side surface of the stator core, and It is possible to perform positioning in the circumferential direction.
The second jig main body has a recess (18) for temporarily fixing the tip (18) of the wire passed between the first jig and the second jig from the inner circumferential surface (54) side to the outer circumferential surface (55) side. 76, 78, 79) on the outer peripheral surface.
The second jig main body includes convex portions (81, 82) that guide (hold, position, temporarily fix) a wire extending from the inter-teeth slot of the stator core to another inter-teeth slot on the inner circumferential surface (54) side. ).
The second jig main body may have a recess (85) on the second lower surface through which a wire is inserted between the first jig main body and the second jig main body.
A method for manufacturing a stator using a stator manufacturing jig according to a second aspect of the present invention includes a step of inserting the wire into the slot between the teeth of the stator core, and applying the first jig to the shoulder of the stator core. contacting the first upper surface of the first jig with the second lower surface of the second jig body, twisting and temporarily fixing the wire to the stator core; The method may include a step of transporting the wire rod in a temporarily fixed state, and a step of welding the tip (18) of the wire rod with the wire rod temporarily fixed to the stator core.

1 Stator manufacturing jig,
10 stator core,
11 shoulder area,
12 teeth,
13 slots,
14 Top surface,
15, 16 recess,
17 wire rod,
18 tip,
19 outer peripheral side,
20 First jig (lower jig),
21 first jig main body,
22 first upper surface;
23, 24 first lower surface;
25 inner peripheral surface,
26 inner peripheral surface,
27 outer peripheral surface,
31, 32 first magnet,
33, 34 second magnet,
35, 36 first hole,
37, 38 second hole,
41, 42 first urethane,
43, 44 second urethane,
47, 48 Convex portion,
50 second jig (upper jig),
51 second jig main body,
53 second lower surface;
55 outer peripheral surface,
61, 62 3rd magnet,
63, 64 3rd hole,
65, 66 3rd urethane,
76 recess,
78, 79 recess,
81, 82 Convex portion,
85 recess.

Claims (8)

A stator manufacturing jig for positioning a wire rod (17) to be inserted into an inter-teeth slot of a stator core (10),
a first jig main body (21) having a first lower surface (23) and a first upper surface (22) capable of abutting against the shoulder (11) of the stator core;
a second jig main body (51) having a second lower surface (53) that can come into contact with the first upper surface;
embedded in the first jig main body, and when the first lower surface contacts the shoulder of the stator core, the first jig main body is attracted to the stator core near the first lower surface, and the first jig main body is attracted to the stator core in the vicinity of the first lower surface; first magnets (31, 32) for temporarily fixing the first jig main body;
a second magnet (33, 34) embedded in the first jig main body;
The first jig main body is embedded in the second jig main body, and is in an attractive relationship with the second magnet when the second lower surface abuts the first upper surface of the first jig main body. A jig for manufacturing a stator, comprising: third magnets (61, 62) to which the second jig main body can be temporarily fixed. The stator manufacturing jig according to claim 1, wherein the first jig main body has an inner circumferential surface (26) that can make surface contact with the outer circumferential side surface (19) of the shoulder portion of the stator core. The first jig main body has convex portions (47, 48) on the inner circumferential surface that can fit into the recesses (15, 16) formed on the outer circumferential side surface of the stator core, and the first jig main body has protrusions (47, 48) on the inner circumferential surface that can fit into the recesses (15, 16) formed on the outer circumferential side surface of the stator core, and The stator manufacturing jig according to claim 2, which is capable of positioning the stator. The second jig main body has a recess (18) for temporarily fixing the tip (18) of the wire passed between the first jig and the second jig from the inner circumferential surface (54) side to the outer circumferential surface (55) side. 76, 78, 79) on the outer circumferential surface. 3. The second jig main body has a convex portion (81, 82) that guides a wire extending from an inter-teeth slot of the stator core to another inter-teeth slot on an inner circumferential surface (54) side. Jig for stator manufacturing. The stator manufacturing method according to claim 1 or 2, wherein the second jig main body has a recess (85) on the second lower surface through which a wire is inserted between the first jig main body and the second jig main body. jig. A method for manufacturing a stator using the stator manufacturing jig according to claim 1, comprising:
inserting the wire into the slot between the teeth of the stator core;
a step of abutting the first jig against the shoulder of the stator core;
A method for manufacturing a stator, comprising: twisting and temporarily fixing the wire to the stator core when abutting the second lower surface of the second jig main body against the first upper surface of the first jig. A method for manufacturing a stator according to claim 7, comprising:
a step of conveying the wire in a temporarily fixed state to the stator core;
A method for manufacturing a stator, comprising the step of welding a tip (18) of the wire with the wire temporarily fixed to the stator core.

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