JP7438043B2 - Stripping method, stripping device, conducting wire, rotating electrical machine, and manufacturing method of rotating electrical machine - Google Patents

Description

The present application relates to a peeling method, a peeling device, a conducting wire, a rotating electrical machine, and a method for manufacturing a rotating electrical machine.

Conventionally, as a conductor wire for a rotating electric machine, a rectangular conductor wire is used, which is composed of a conductor having a rectangular cross-sectional shape and made of copper, aluminum, or the like, and an insulating coating surrounding the outer periphery of the conductor. When using a rectangular conducting wire for winding, the ends of the conductor portion are electrically connected. At this time, in order to electrically connect the two rectangular conductive wires, a peeled portion is formed by partially peeling off the insulation coating. As a method for forming a peeled portion in a rectangular conducting wire, there is known an apparatus that peels off an insulating coating and cuts the conducting wire material each time the rectangular conducting wire is sent out to produce coil segments. In this device, two insulating coatings having a parallel positional relationship in a cross-sectional view of a rectangular conducting wire are peeled off by shearing with a pair of parallel peeling blades. By performing this process twice in total, once in a direction perpendicular to the cross-sectional view of the rectangular conductor and in a horizontal direction, the insulating coating portion of the rectangular conductor is peeled off (see, for example, Patent Document 1).

JP 2018-50369 (Figure 3)

In conventional peeling methods, peeling devices, conducting wires, rotating electric machines, and methods for manufacturing rotating electric machines, a sagging portion occurs in a cross-sectional view of a rectangular conducting wire at a location where the punch starts shearing in the first peeling process. In addition, burrs are generated at locations where the punch has finished shearing the cross section of the rectangular conducting wire. When the second peeling process is performed in a direction perpendicular to the first peeling process, the pair of punches comes into contact with the sagging part and the burr part, respectively. In the sag part, the conductor part and the insulating coating part are deformed in the direction of the fourth side surface, that is, in the direction in which the punch moves in the first peeling process, before the first peeling process, so the insulating coating remains in the sag part in the second peeling process. There is a fear. Then, when electrically connecting rectangular conductive wires from which the insulation coating has been peeled off by welding or the like, there is a problem in that if the insulation coating remains at the peeled portion, the welding quality deteriorates.

The present application discloses a technique for solving the above-mentioned problems, and provides a stripping method, a stripping device, a conducting wire, a rotating electrical machine, and a method for manufacturing a rotating electrical machine that can suppress the residual insulation coating of a conductor. The purpose is to

The peeling method disclosed in this application includes:
A peeling method for peeling off the insulation coating of a conductor made of a conductor covered with an insulation coating, the method comprising:
The conductor has a rectangular cross-sectional shape, a first side surface and a second side surface which are a pair of opposite sides in a first direction of the rectangle, and a first side surface and a second side surface which are a pair of opposite sides in a second direction perpendicular to the first direction. having three sides and a fourth side,
a first peeling step of peeling off the insulating coating on the first side surface and the second side surface of the conductor in one direction of the first direction along the first side surface and the second side surface;
a second peeling step of peeling off the insulating coating on the third side surface and the fourth side surface of the conductor in the second direction along the third side surface and the fourth side surface;
Between the first peeling step and the second peeling step, a correction step of correcting the cross-sectional shape of the conductor deformed in the first peeling step ,
In the first peeling step, one direction of the first direction is from the third side surface to the fourth side surface,
In the modification step, the fourth side surface is supported while avoiding both ends in the second direction of the third side surface that are opposite to both ends in the second direction pushed on the fourth side surface. Pushing both ends of the second direction in the other direction of the first direction, the burr portion generated on the fourth side surface of the conductor in the first peeling step is moved from the fourth side surface toward the third side surface. The sagging portion generated on the third side surface of the conductor in the first peeling step is moved from the fourth side surface toward the third side surface .
Furthermore, the peeling method disclosed in this application includes:
A peeling method for peeling off the insulation coating of a conductor made of a conductor covered with an insulation coating, the method comprising:
The conductor has a rectangular cross-sectional shape, a first side surface and a second side surface which are a pair of opposite sides in a first direction of the rectangle, and a first side surface and a second side surface which are a pair of opposite sides in a second direction perpendicular to the first direction. having three sides and a fourth side,
a first peeling step of peeling off the insulating coating on the first side surface and the second side surface of the conductor in one direction of the first direction along the first side surface and the second side surface;
a second peeling step of peeling off the insulating coating on the third side surface and the fourth side surface of the conductor in the second direction along the third side surface and the fourth side surface;
Between the first peeling step and the second peeling step, a correction step of correcting the cross-sectional shape of the conductor deformed in the first peeling step,
In the first peeling step, one direction of the first direction is from the third side surface to the fourth side surface,
The modification step includes forming recesses recessed in the second direction on the first side surface and the second side surface of the conductor while supporting the first side surface, the second side surface, and the third side surface; The sagging portion generated on the third side surface of the conductor in the first peeling step is moved from the fourth side surface toward the third side surface.
Furthermore, the peeling method disclosed in this application includes:
A peeling method for peeling off the insulation coating of a conductor made of a conductor covered with an insulation coating, the method comprising:
The conductor has a rectangular cross-sectional shape, a first side surface and a second side surface which are a pair of opposite sides in a first direction of the rectangle, and a first side surface and a second side surface which are a pair of opposite sides in a second direction perpendicular to the first direction. having three sides and a fourth side,
a first peeling step of peeling off the insulating coating on the first side surface and the second side surface of the conductor in one direction of the first direction along the first side surface and the second side surface;
a second peeling step of peeling off the insulating coating on the third side surface and the fourth side surface of the conductor in the second direction along the third side surface and the fourth side surface;
Between the first peeling step and the second peeling step, a correction step of correcting the cross-sectional shape of the conductor deformed in the first peeling step,
In the first peeling step, one direction of the first direction is from the third side surface to the fourth side surface,
In the modification step, while supporting the first side surface and the second side surface, the first side surface and the second side surface of the conductor are pressed in a direction toward each other in the second direction, and the first peeling step is performed. The sagging portion generated on the third side surface of the conductor is moved from the fourth side surface toward the third side surface .
Further, the peeling device disclosed in this application includes:
A peeling device for peeling off the insulation coating of a conductor made of a conductor covered with an insulation coating,
The conductor has a rectangular cross-sectional shape, a first side surface and a second side surface which are a pair of opposite sides in a first direction of the rectangle, and a first side surface and a second side surface which are a pair of opposite sides in a second direction perpendicular to the first direction. having three sides and a fourth side,
a first peeling section that peels off the insulating coating on the first side surface and the second side surface of the conductor in one direction of the first direction along the first side surface and the second side surface;
a second peeling section that peels off the insulating coating on the third side surface and the fourth side surface of the conductor in the second direction along the third side surface and the fourth side surface;
a correction part that corrects the cross-sectional shape of the conductor deformed at the first peeling part ,
The first peeling portion is such that one direction of the first direction is from the third side surface to the fourth side surface,
The correction portion supports the third side while avoiding both ends in the second direction of the third side that are opposite to both ends in the second direction that are pushed on the fourth side. Pushing both ends of the second direction in the other direction of the first direction, the burr portion generated on the fourth side surface of the conductor at the first peeling portion is moved from the fourth side surface toward the third side surface. The sagging portion generated on the third side surface of the conductor by the first peeling section is moved from the fourth side surface toward the third side surface .
Further, the peeling device disclosed in this application includes:
A peeling device for peeling off the insulation coating of a conductor made of a conductor covered with an insulation coating,
The conductor has a rectangular cross-sectional shape, a first side surface and a second side surface which are a pair of opposite sides in a first direction of the rectangle, and a first side surface and a second side surface which are a pair of opposite sides in a second direction perpendicular to the first direction. having three sides and a fourth side,
a first peeling section that peels off the insulating coating on the first side surface and the second side surface of the conductor in one direction of the first direction along the first side surface and the second side surface;
a second peeling section that peels off the insulating coating on the third side surface and the fourth side surface of the conductor in the second direction along the third side surface and the fourth side surface;
a correction part that corrects the cross-sectional shape of the conductor deformed at the first peeling part,
The first peeling portion is such that one direction of the first direction is from the third side surface to the fourth side surface,
The modification portion forms a concave portion recessed in the second direction on the first side surface and the second side surface of the conductor while supporting the first side surface, the second side surface, and the third side surface, and A sagging portion generated on the third side surface of the conductor at the first peeling portion is moved from the fourth side surface toward the third side surface.
Further, the peeling device disclosed in this application includes:
A peeling device for peeling off the insulation coating of a conductor made of a conductor covered with an insulation coating,
The conductor has a rectangular cross-sectional shape, a first side surface and a second side surface which are a pair of opposite sides in a first direction of the rectangle, and a first side surface and a second side surface which are a pair of opposite sides in a second direction perpendicular to the first direction. having three sides and a fourth side,
a first peeling section that peels off the insulating coating on the first side surface and the second side surface of the conductor in one direction of the first direction along the first side surface and the second side surface;
a second peeling section that peels off the insulating coating on the third side surface and the fourth side surface of the conductor in the second direction along the third side surface and the fourth side surface;
a correction part that corrects the cross-sectional shape of the conductor deformed at the first peeling part,
The first peeling part is such that one direction of the first direction is in a direction from the third side surface to the fourth side surface,
The modifying section presses the first side surface and the second side surface of the conductor in a direction toward each other in the second direction while supporting the first side surface and the second side surface, thereby forming the first peeling section. The sagging portion generated on the third side surface of the conductor is moved from the fourth side surface toward the third side surface.
Further, the conductive wire disclosed in this application is
In the first peeling step, one direction of the first direction is from the third side surface to the fourth side surface,
The modification step includes forming recesses recessed in the second direction on the first side surface and the second side surface of the conductor while supporting the first side surface, the second side surface, and the third side surface; In a conductive wire using a peeling method in which a sagging portion generated on the third side surface of the conductor in the first peeling step is moved from the fourth side surface to the third side surface,
having an exposed portion of the conductor that is not covered with the insulating coating;
The first side surface and the second side surface of the exposed portion are provided with a recessed portion recessed in the second direction.
Further, the conductive wire disclosed in this application is
In the first peeling step, one direction of the first direction is from the third side surface to the fourth side surface,
In the modification step, the first side surface and the second side surface are pressed toward each other in the second direction while supporting the first side surface and the second side surface, and the conductor is removed in the first peeling step. moving the sagging portion that has occurred on the third side surface from the fourth side surface toward the third side surface;
In the conductive wire, the modification step is performed using a peeling method in which a convex portion protruding in the second direction is formed on the first side surface and the second side surface of the conductor.
having an exposed portion of the conductor that is not covered with the insulating coating;
The first side surface and the second side surface of the exposed portion are provided with a protrusion projecting in the second direction.
Furthermore, the rotating electrical machine disclosed in this application is
The rotor includes a stator around which the conductive wire is wound, and a rotor that is disposed opposite to the stator with a gap interposed therebetween.
Furthermore, the method for manufacturing a rotating electric machine disclosed in the present application includes:
A rotor is disposed opposite to a stator wound with the conductive wire from which a portion of the insulating coating has been peeled off by the peeling method described above, with a gap interposed therebetween.

According to the peeling method, peeling device, conducting wire, rotating electrical machine, and method for manufacturing a rotating electrical machine disclosed in the present application,
It is possible to suppress the residual insulation coating on the conductor.

3 is a flowchart showing a peeling method in Embodiment 1. FIG. FIG. 2 is an outline diagram showing the configuration of a conducting wire used in FIG. 1. FIG. FIG. 2 is a cross-sectional view showing the configuration of a conducting wire used in FIG. 1. FIG. FIG. 2 is a diagram showing the state of conductive wires and the configuration of a peeling device in the peeling method shown in FIG. 1; FIG. 2 is a diagram showing the state of conductive wires and the configuration of a peeling device in the peeling method shown in FIG. 1; FIG. 2 is a diagram showing the state of conductive wires and the configuration of a peeling device in the peeling method shown in FIG. 1; FIG. 2 is a diagram showing the state of conductive wires and the configuration of a peeling device in the peeling method shown in FIG. 1; FIG. 2 is a diagram showing the state of conductive wires and the configuration of a peeling device in the peeling method shown in FIG. 1; FIG. 2 is a diagram showing the state of conductive wires and the configuration of a peeling device in the peeling method shown in FIG. 1; FIG. 2 is a diagram showing the state of conductive wires and the configuration of a peeling device in the peeling method shown in FIG. 1; FIG. 2 is a diagram showing the state of conductive wires and the configuration of a peeling device in the peeling method shown in FIG. 1; FIG. 2 is a plan view showing a joining configuration before welding using a conducting wire in the peeling method shown in FIG. 1; FIG. 2 is a perspective view showing a joining configuration before welding using a conducting wire in the peeling method shown in FIG. 1; FIG. 8 is a plan view showing a joined structure of the conducting wire shown in FIG. 7 after welding. FIG. 8 is a perspective view showing a joined structure of the conducting wire shown in FIG. 7 after welding. FIG. 7 is a diagram illustrating the state of conductive wires and the configuration of a peeling device in a peeling method in Embodiment 2; FIG. 7 is a diagram illustrating the state of conductive wires and the configuration of a peeling device in a peeling method in Embodiment 2; FIG. 7 is a diagram illustrating the state of conductive wires and the configuration of a peeling device in a peeling method in Embodiment 2; FIG. 7 is a diagram illustrating the state of conductive wires and the configuration of a peeling device in a peeling method in Embodiment 2; FIG. 7 is a diagram illustrating the state of conductive wires and the configuration of a peeling device in a peeling method in Embodiment 2; FIG. 7 is a diagram illustrating the state of conductive wires and the configuration of a peeling device in a peeling method in Embodiment 2; FIG. 7 is a diagram illustrating the state of conductive wires and the configuration of a peeling device in a peeling method in Embodiment 2; FIG. 12 is a plan view showing a joining configuration before welding using a conducting wire in the peeling method shown in FIGS. 9 to 11. FIG. FIG. 12 is a perspective view showing a joining configuration before welding using a conducting wire in the peeling method shown in FIGS. 9 to 11; FIG. 7 is a diagram showing the state of a conductor and the configuration of a peeling device in a peeling method in Embodiment 3; FIG. 7 is a diagram showing the state of a conductor and the configuration of a peeling device in a peeling method in Embodiment 3; FIG. 7 is a diagram showing the state of a conductor and the configuration of a peeling device in a peeling method in Embodiment 3; FIG. 7 is a diagram showing the state of a conductor and the configuration of a peeling device in a peeling method in Embodiment 3; FIG. 7 is a diagram showing the state of a conductor and the configuration of a peeling device in a peeling method in Embodiment 3; FIG. 7 is a diagram showing the state of a conductor and the configuration of a peeling device in a peeling method in Embodiment 3; FIG. 7 is a diagram showing the state of a conductor and the configuration of a peeling device in a peeling method in Embodiment 3; FIG. 16 is a plan view showing a joining configuration before welding using a conducting wire in the peeling method shown in FIGS. 13 to 15; FIG. 16 is a perspective view showing a joining configuration before welding using a conducting wire in the peeling method shown in FIGS. 13 to 15; 7 is a flowchart showing a method for manufacturing a rotating electrical machine in Embodiment 4. FIG. 18 is a cross-sectional view showing the configuration of a rotating electrical machine formed by the method for manufacturing the rotating electrical machine shown in FIG. 17. FIG. It is a figure which shows the state of the conductor of the peeling method in a comparative example, and the structure of a peeling apparatus. It is a figure which shows the state of the conductor of the peeling method in a comparative example, and the structure of a peeling apparatus. It is a figure which shows the state of the conductor of the peeling method in a comparative example, and the structure of a peeling apparatus. It is a figure which shows the state of the conductor of the peeling method in a comparative example, and the structure of a peeling apparatus. It is a figure which shows the state of the conductor of the peeling method in a comparative example, and the structure of a peeling apparatus. It is a figure which shows the state of the conductor of the peeling method in a comparative example, and the structure of a peeling apparatus.

Embodiment 1.
FIG. 1 is a flowchart showing a peeling method in the first embodiment. FIG. 2A is an outline diagram showing the configuration of the conducting wire used in FIG. 1. FIG. 2B is a cross-sectional view showing the structure of the conducting wire used in FIG. 1. 3 to 6 are diagrams showing the state of the conducting wire and the configuration of the peeling device in the peeling method shown in FIG. 1.

FIG. 7A is a plan view showing a joining configuration before welding using a conducting wire in the peeling method shown in FIG. 1. FIG. 7B is a perspective view showing the joining structure before welding using the conducting wire in the peeling method shown in FIG. 1. FIG. 8A is a plan view showing a joined structure of the conductor shown in FIG. 7 after welding. FIG. 8B is a perspective view showing a joined structure of the conductor shown in FIG. 7 after welding. FIGS. 19 to 22 are diagrams showing the state of the conducting wire and the configuration of the peeling device in a peeling method in a comparative example.

The conducting wire 1 used in the first embodiment will be explained based on FIG. 2. In addition, since the structure of the conducting wire 1 used as a material is the same in the following embodiments, the description thereof will be omitted as appropriate. In the figure, a conductive wire 1 is composed of a conductor 2 and an insulating coating 3 that covers the outer periphery of the conductor 2. The conductor 2 portion of the conductive wire 1 is made of a metal plate material, and its corners are rounded (R-chamfered), and is generally referred to as a rectangular conductive wire.

For the conductor 2, it is desirable to use a material with good electrical conductivity, such as copper or aluminum. Further, it is desirable to use a material for the insulating coating 3 that has insulating properties and has good adhesion to the conductor 2, such as polyurethane, polyester, silicone, polyimide, epoxy resin, or fluororesin. In addition, the outer periphery of the conductor 2 of the conducting wire 1 is covered with an insulating coating 3 over the entire length in the longitudinal direction Z. The conductive wire 1 is made of a material having a length that allows a plurality of various products to be manufactured, but for convenience, the same reference numerals as the conductive wire 1 will be used for both manufactured products and materials.

As shown in FIG. 2B, which is a cross-sectional view taken along the line QQ in FIG. 2A, the conductor 2 of the conductor 1 has a rectangular cross-sectional shape. The rectangular conductor 2 has a first side surface 16 and a second side surface 17 on a pair of opposite sides in the first direction It has a fourth side surface 19. Note that the rectangle referred to herein has two sets of parallel opposite sides, and includes cases where the corners are not necessarily right angles.

One direction from the third side surface 18 to the fourth side surface 19 in the first direction X is defined as one direction X1, and the other direction is defined as the other direction X2. Further, one direction from the first side surface 16 to the second side surface 17 in the second direction Y will be described as one direction Y1, and the other direction will be described as the other direction Y2. Further, the length H1 in the first direction X and the length W1 in the second direction Y of the conductive wire 1 as a raw material, that is, the conductor 2 before processing, will be explained.

As shown in FIG. 1, the method for peeling off the insulating coating 3 of the conductive wire 1 in the first embodiment includes a first peeling step (step ST1 in FIG. 1), a repair step (step ST2 in FIG. 1), and a second peeling step. The process (step ST3 in FIG. 1) is provided. In the first peeling step, the insulating coating 3 on the first side surface 16 and the second side surface 17 of the conductor 2 is peeled off in the first direction X along the first side surface 16 and the second side surface 17. In the next correction process, the cross-sectional shape of the conductor 2 deformed in the first peeling process is corrected. In the next second peeling step, the insulating coating 3 on the third side surface 18 and the fourth side surface 19 of the conductor 2 is peeled off in the second direction Y along the third side surface 18 and the fourth side surface 19. Note that the following embodiments are the same in that they include a first peeling process, a second peeling process, and a correction process between the first peeling process and the second peeling process, as shown above. , the explanation thereof will be omitted as appropriate.

An apparatus for stripping the insulating coating 3 of the conductive wire 1, which performs each of these steps, will be described with reference to FIGS. 3 to 5. As shown in FIG. 3, the first peeling section 101 includes a first support section 51 and a pair of first punches 41. The first peeling unit 101 peels off the insulating coating 3 on the first side surface 16 and the second side surface 17 of the conductive wire 1 in the first direction X1 along the first side surface 16 and the second side surface 17. .

As shown in FIG. 4, the modification section 131 includes a modification jig 81 and a modification mold 91. The correction unit 131 corrects the cross-sectional shape of the conductor 2 that has been deformed in the first peeling process. Specifically, the correction section 131 removes the burr 7 generated on the fourth side surface 19 of the conductor 2 by the first peeling section 101 in the direction from the fourth side surface 19 to the third side surface 18, in the other direction X2 of the first direction. The sagging portion 6 generated on the third side surface 18 of the conductor 2 in the first peeling step is moved from the fourth side surface 19 to the third side surface 18, in the other direction X2 of the first direction X. Note that details of the sagging portion 6 and the burr portion 7 will be described later.

As shown in FIG. 5, the second peeling section 102 includes a second support section 52 and a pair of second punches 42. The second peeling unit 102 peels off the insulating coating 3 on the third side surface 18 and the fourth side surface 19 of the conducting wire 1 in the second direction Y along the third side surface 18 and the fourth side surface 19.

A method for peeling off the insulating coating 3 of the conductive wire 1 using the peeling apparatus of Embodiment 1 configured as described above will be described with reference to FIGS. 3 to 6. First, as shown in FIG. 3A, the fourth side surface 19 side of the conducting wire 1 is placed and supported on the first support portion 51. Next, the pair of first punches 41 are moved in one direction The insulating coating 3 is peeled off along the side surface 16 and the second side surface 17. As a result, as shown in FIG. 3B, a first peeling step is performed in which the insulating coating 3 on the first side surface 16 and the second side surface 17 of the conductive wire 1 is simultaneously peeled off (step ST1 in FIG. 1).

At this time, the area to be removed by peeling includes a part of the conductor 2 of the conducting wire 1, and the cross section of the part of the conductor 2 of the conducting wire 1 has a rounded corner (R-chamfered) shape. Including part or all. Therefore, the length W2 of the pair of first punches 41 in the second direction Y is shorter than the length W1 of the conductor 2 in the second direction Y. As shown in FIG. 3B, the length W2 of the conductor 2 in the second direction Y is approximately the same as the length W2 of the first punch 41. Further, at this time, sagging portions 6 are formed at two locations where the first punch 41 contacts both ends of the third side surface 18 of the conductor 2 in the second direction Y at the beginning of the first peeling step. Furthermore, at the end of the first peeling process, burrs 7 are formed by the first punch 41 at two contacting locations on both ends of the fourth side surface 19 of the conductor 2 in the second direction Y.

The sagging portion 6 formed on the third side surface 18 has a rounded chamfered shape (arc shape) connecting the third side surface 18 and the first side surface 16 and the second side surface 17 where a part of the conductor 2 is exposed in the first peeling process. shape). Further, in the sagging portion 6, the insulating coating 3 that has moved in one direction X1 of the first direction X is formed on the first side surface 16 and the second side surface 17 on the other direction X2 side of the first direction X. Further, the burr portion 7 formed on the fourth side surface 19 is formed in the first direction It has a shape (protrusion shape) that protrudes in one direction X1. Further, on the burr portion 7, the insulating coating 3 that has moved in the first direction X1 of the first side surface 16 and the second side surface 17 in the first direction X is formed.

Next, as shown in FIG. 4A, while the third side surface 18 side of the conducting wire 1 is supported by the correction jig 81, as shown in FIG. 4B, both ends of the fourth side surface 19 in the second direction Y are corrected. The mold 91 pushes the first direction X toward the other direction X2 by a certain amount. As a result, a correction process is performed to correct the cross-sectional shape of the conductor 2 that has been deformed in the first peeling process (step ST2 in FIG. 1). The pressing amount at this time is set with the purpose of moving the sagging portion 6 in the first direction X and the other direction X2.

Then, in the correction step, the sagging portion 6 that was generated in the first peeling step from the third side surface 18 in one direction X1 of the first direction X to the fourth side surface 19 is A correction location 61 is formed that moves in the direction X2 and also moves the insulating coating 3 in the other direction X2 of the first direction. That is, this moves the burr 7 generated on the fourth side surface 19 of the conductor 2 in the first peeling process from the fourth side surface 19 toward the third side surface 18, in the other direction X2 of the first direction This is due to the fact that it is formed. Note that the correction jig 81 supports the third side surface 18 while avoiding both ends of the third side surface 18 pressed by the correction mold 91 in the second direction Y so as not to interfere with the deformation.

Next, as shown in FIG. 5A, the correction unit 131 is retracted. Next, as shown in FIG. 5B, the second side surface 17 of the conductor 2 is supported by the second support portion 52. Next, the insulation coating 3 on the third side surface 18 and the fourth side surface 19 of the conductor 2 is removed in one direction Y1 in the second direction Y along the third side surface 18 and the fourth side surface 19 using a pair of second punches 42. Peel it toward the As a result, as shown in FIG. 5C, the conductor 1 has a fourth side surface 19 on which the burr portion 7 has been corrected in the "correction process" of the conductor 2, and a third side surface 18 on which the sag portion 6 has been corrected in the "correction process". A second peeling process is performed in which the insulating coating 3 is peeled off at the same time (step ST3 in FIG. 1).

At this time, as shown in FIG. 6, the range 70 to be removed by peeling is the range that includes the conductor 2 of the conductor 1, and in addition to all the sagging parts 6 corrected in the repair process, the cross section of the conductor 2 of the conductor 1 has , including a part of the shape where the corners are rounded (R-chamfered). Therefore, the length H2 of the pair of second punches 42 in the first direction X is shorter than the length H1 of the conductor 2 in the first direction X. The length H2 of the conductor 2 in the first direction X obtained by the second peeling process is formed to be substantially the same as the length H2 of the second punch 42.

Next, a wiring method using the conducting wire 1 in which a portion of the insulating coating 3 is peeled off and an exposed portion 200 of the conductor 2 is formed will be described. As shown in FIGS. 7A and 7B, the exposed portions 200 of the conductors 2 of the two conductive wires 1 are brought into contact with each other. Next, the locations where the exposed portions 200 are in contact with each other are welded. In the welding process, the exposed portions 200 of the conductors 2 are welded together to form a welded portion, and the conductors 2 of the exposed portions 200 that are in contact with each other are joined. Next, as shown in FIGS. 8A and 8B, the welded portion of the exposed portion 200 of the conductor 2 of the conducting wire 1 is processed with an insulating resin 13 for the purpose of preventing short circuits. The insulating resin 13 covers the welded portion of each conducting wire 1, the end face of the conductor 2, the exposed portion 200 of the conductor 2, and the insulating coating 3 by flowing and fixing using thermoplasticity.

Here, a comparative example without the modification process of the present application will be described using FIGS. 19 to 22. As shown in FIG. 19, the first peeling step is performed in the same manner as in the case shown above. Then, a sagging portion is formed in the same manner. In this state, a second peeling step is performed as shown in FIG. In this case, if the sag portion is not taken into account, the length H5 of the conductor can be secured, but a portion T where the insulating film remains on the conductor will occur as shown in FIGS. 20B and 21.

If the second peeling step is performed with the sagging portion taken into consideration, the insulating film will not remain at the location T shown above, but as shown in FIG. 22, the length H6 of the conductor will become thinner. The cross-sectional area of the conductor decreases.

In contrast, in the case of the present application, the exposed portion 200 of the conductor 2 can be formed without reducing the cross-sectional area of the conductor 2 as much as possible. Thereby, the electrical resistance of the conducting wire 1 can be reduced. Furthermore, the decrease in mechanical strength of the conducting wire 1 can be reduced, making wiring easier.

According to the peeling method and peeling apparatus of Embodiment 1 configured as described above,
A peeling method for peeling off the insulation coating of a conductor made of a conductor covered with an insulation coating, the method comprising:
The conductor has a rectangular cross-sectional shape, a first side surface and a second side surface which are a pair of opposite sides in a first direction of the rectangle, and a first side surface and a second side surface which are a pair of opposite sides in a second direction perpendicular to the first direction. having three sides and a fourth side,
a first peeling step of peeling off the insulating coating on the first side surface and the second side surface of the conductor in one direction of the first direction along the first side surface and the second side surface;
a second peeling step of peeling off the insulating coating on the third side surface and the fourth side surface of the conductor in the second direction along the third side surface and the fourth side surface;
Between the first peeling step and the second peeling step, a correction step is provided for correcting the cross-sectional shape of the conductor deformed in the first peeling step.
Further, there is provided a peeling device for peeling off the insulation coating of a conductor formed of a conductor covered with an insulation coating,
The conductor has a rectangular cross-sectional shape, a first side surface and a second side surface which are a pair of opposite sides in a first direction of the rectangle, and a first side surface and a second side surface which are a pair of opposite sides in a second direction perpendicular to the first direction. having three sides and a fourth side,
a first peeling section that peels off the insulating coating on the first side surface and the second side surface of the conductor in one direction of the first direction along the first side surface and the second side surface;
a second peeling section that peels off the insulating coating on the third side surface and the fourth side surface of the conductor in the second direction along the third side surface and the fourth side surface;
and a correction section for correcting the cross-sectional shape of the conductor deformed at the first peeling section,
It is possible to suppress the residual insulation film on the conductor and ensure the cross-sectional area of the conductor.

Furthermore, in the first peeling step, the insulating coatings on the first side surface and the second side surface of the conductor are simultaneously peeled off.
In the second peeling step, the insulation coatings on the third side surface and the fourth side surface of the conductor are simultaneously peeled off,
Further, the first peeling section simultaneously peels off the insulating coating on the first side surface and the second side surface of the conductor.
Since the second peeling section simultaneously peels off the insulating coating on the third side surface and the fourth side surface of the conductor,
The efficiency of peeling off the insulation coating of the conductor wire is improved.

Furthermore, in the first peeling step, one direction of the first direction is a direction from the third side surface to the fourth side surface,
The correction step includes moving the burr generated on the fourth side surface of the conductor in the first peeling step from the fourth side surface toward the third side surface, and moving the burr portion generated on the fourth side surface of the conductor in the first peeling step. Since the sagging portion that has occurred on the third side is moved from the fourth side to the third side,
Further, the first peeling portion is such that one direction of the first direction is a direction from the third side surface to the fourth side surface,
The correction section moves the burr generated on the fourth side surface of the conductor from the fourth side surface toward the third side surface using the first peeling section, and moves the burr generated on the fourth side surface of the conductor using the first peeling section. Since the sagging portion that has occurred on the third side is moved from the fourth side to the third side,
The sagging part that occurred on the conductor is corrected using the burr part that occurred on the conductor.
It is possible to reliably suppress the residual insulation coating of the conductor, and it is possible to reliably secure the cross-sectional area of the conductor.

Embodiment 2.
9 to 11 are diagrams showing the state of the conducting wire and the configuration of the peeling device in the peeling method in the second embodiment. FIG. 12A is a plan view showing the joining structure before welding using the conducting wire in the peeling method shown in FIGS. 9 to 11. FIG. 12B is a perspective view showing the joining structure before welding using the conducting wire in the peeling method shown in FIGS. 9 to 11.

In the figures, the same parts as in the first embodiment are given the same reference numerals, and the explanation will be omitted. The difference between the second embodiment and the first embodiment is the modification process and the modification section, and these parts will be mainly explained. Further, the same parts as those in the first embodiment are given the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 10, the correction unit 132 includes a correction jig 82 and a pair of correction molds 92, and corrects the cross-sectional shape of the conductor 2 deformed in the first peeling process. Specifically, the correction part 132 forms a recessed part 12 recessed in the second direction Y on the first side surface 16 and the second side surface 17 while supporting the first side surface 16, the second side surface 17, and the third side surface 18. Then, the sagging portion 6 generated on the third side surface 18 of the conductor 2 in the first peeling step is moved from the fourth side surface 19 to the third side surface 18, in the other direction X2 of the first direction X. The pair of correction molds 92 have a convex portion 920 that forms the concave portion 12 .

A method of peeling off the insulating coating 3 of the conductive wire 1 using the peeling apparatus of the second embodiment configured as described above will be described with reference to FIGS. 9 to 11. First, as in the first embodiment, as shown in FIG. 9A, the fourth side surface 19 of the conducting wire 1 is placed and supported on the first support portion 51. Next, the pair of first punches 41 are moved in one direction The insulating coating 3 is peeled off along the side surface 16 and the second side surface 17. Thereby, as shown in FIG. 9B, a first peeling step is performed in which the insulating coating 3 on the first side surface 16 and the second side surface 17 of the conductive wire 1 is simultaneously peeled off (step ST1 in FIG. 1).

Next, as shown in FIG. 10A, with the third side surface 18 of the conducting wire 1 supported by the correction jig 82, the second side surface 16 and the second side surface 17 are supported by the correction mold 92. They are pressed toward each other in direction Y. Then, the convex portion 920 is pressed against the first side surface 16 and the second side surface 17 of the conductor 2 using the correction mold 92. Then, as shown in FIG. 10B, a recess 12 recessed in the second direction Y is formed on the first side surface 16 and the second side surface 17. As a result, the sagging portion 6 generated on the third side surface 18 of the conductor 2 in the first peeling step is moved from the fourth side surface 19 to the third side surface 18, in the other direction X2 of the first direction.

As shown in FIG. 10B, in the first peeling step, the sagging portion 6 that was generated in the direction from the third side surface 18 in one direction X1 of the first direction X to the fourth side surface 19 is While moving in the direction X2, the insulating coating 3 also moves in the other direction X2 of the first direction X. That is, due to the recess 12 formed in the first side surface 16 and the second side surface 17 of the conductor 2 in the modification process, a part of the conductor 2 in the recess 12 is moved in the direction from the fourth side surface 19 to the third side surface 18, and in the direction from the first side surface 18. The sagging portion 6 generated on the third side surface 18 of the conductor 2 in the first peeling step moves in the other direction X2 of the first direction X, from the fourth side surface 19 to the third side surface 18. A moving correction location 62 is formed. Note that the correction jig 82 is configured to restrain the entire surface of the third side surface 18 in the second direction Y so that the deformation of the recessed portion 12 does not escape to other locations other than the sagging portion 6. The third side surface 18 is supported.

Next, as shown in FIG. 11A, the correction unit 132 is retracted. Next, as shown in FIG. 11B, the second side surface 17 of the conductor 2 is supported by the second support portion 52, as in the first embodiment. Next, the insulation coating 3 on the third side surface 18 and the fourth side surface 19 of the conductor 2 is removed in one direction Y1 in the second direction Y along the third side surface 18 and the fourth side surface 19 using a pair of second punches 42. Peel it toward the As a result, as shown in FIG. 11C, the conductive wire 1 undergoes a second peeling process in which the fourth side surface 19 of the conductor 2 and the insulating coating 3 on the third side surface 18 whose sagging portion 6 has been corrected in the "correction step" are simultaneously removed. The process is carried out. A recess 12 is present on the first side surface 16 and the second side surface 17 of the conductor 2 (step ST3 in FIG. 1).

Next, a wiring method using the conducting wire 1 in which a portion of the insulating coating 3 is peeled off and an exposed portion 200 of the conductor 2 is formed will be described. As shown in FIGS. 12A and 12B, the exposed portions 200 of the conductors 2 of the two conductive wires 1 are brought into contact with each other. Next, the locations where the exposed portions 200 are in contact with each other are welded. In the welding process, the exposed portions 200 of the conductors 2 are welded together to form a welded portion, and the conductors 2 of the exposed portions 200 that are in contact with each other are joined. In the process of welding the different conducting wires 1, since the concave portion 12 exists in the conductor 2 near the welding portion, cooling performance after welding is improved and processing time can be shortened. Moreover, falling of the insulating resin 13, which will be described later, can be suppressed more than in the case where the recess 12 is not provided.

Next, as in the first embodiment, as shown in FIGS. 8A and 8B, the welded portion of the exposed portion 200 of the conductor 2 of the conducting wire 1 is processed with insulating resin 13 for the purpose of preventing short circuits. The insulating resin 13 covers the welded portion of each conducting wire 1, the end face of the conductor 2, the exposed portion 200 of the conductor 2, and the insulating coating 3 by flowing and fixing using thermoplasticity.

According to the peeling method and peeling apparatus of the second embodiment configured as described above, not only can the same effects as those of the first embodiment described above be obtained, but also
In the first peeling step, one direction of the first direction is from the third side surface to the fourth side surface,
The modification step includes forming recesses recessed in the second direction on the first side surface and the second side surface of the conductor while supporting the first side surface, the second side surface, and the third side surface; Since the sagging portion generated on the third side surface of the conductor in the first peeling step is moved from the fourth side surface toward the third side surface,
Further, the first peeling part is such that one direction of the first direction is a direction from the third side surface to the fourth side surface,
The modification portion forms a concave portion recessed in the second direction on the first side surface and the second side surface of the conductor while supporting the first side surface, the second side surface, and the third side surface, and Since the sagging portion generated on the third side surface of the conductor is moved from the fourth side surface to the third side surface in the first peeling section,
The sagging part that occurred in the conductor is corrected using the recess formed in the conductor,
It is possible to reliably suppress the residual insulating coating of the conductor, ensure the cross-sectional area of the conductor, and improve the accuracy of wiring of the conductor.

Furthermore, according to the conducting wire of the second embodiment configured as described above,
In the conductor using the above peeling method,
having an exposed portion of the conductor that is not covered with the insulating coating;
Since the first side surface and the second side surface of the exposed part are provided with a recessed part recessed in the second direction,
The accuracy of conductor wiring is improved.

Embodiment 3.
13 to 15 are diagrams showing the state of the conducting wire and the configuration of the stripping device in the stripping method according to the third embodiment. FIG. 16A is a plan view showing the joining structure before welding using the conducting wire in the peeling method shown in FIGS. 13 to 15. FIG. 16B is a perspective view showing a joining structure before welding using a conducting wire in the peeling method shown in FIGS. 13 to 15. Note that the third embodiment differs from each of the above embodiments in the modification process and modification section, and these parts will be mainly described. Further, the same parts as those in each of the above embodiments are given the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 14, the correction unit 133 includes a pair of correction molds 93, and corrects the cross-sectional shape of the conductor 2 deformed in the first peeling process. Furthermore, a convex portion 15 protruding in the second direction Y is formed on the first side surface 16 and the second side surface 17. Specifically, the correction unit 133 supports the first side surface 16 and the second side surface 17 while pressing the first side surface 16 and the second side surface 17 in a direction toward each other in the second direction Y, and performs the first peeling. The sagging portion 6 generated on the third side surface 18 of the conductor 2 in the process is moved from the fourth side surface 19 toward the third side surface 18, in the other direction X2 of the first direction X. Furthermore, the pair of correction molds 93 have a recess 930 that forms the protrusion 15 .

As shown in FIG. 15, the second peeling section 103 includes a second support section 522 and a pair of second punches 42. The second peeling unit 103 peels off the insulating coating 3 on the third side surface 18 and the fourth side surface 19 of the conducting wire 1 in the second direction Y along the third side surface 18 and the fourth side surface 19. The second support portion 522 has a recess 220 that supports the convex portion 15 of the conductor 2 .

A method for peeling off the insulating coating 3 of the conductive wire 1 using the peeling apparatus of the third embodiment configured as described above will be described with reference to FIGS. 13 to 15. First, as in each of the above embodiments, as shown in FIG. 13A, the fourth side surface 19 of the conducting wire 1 is placed and supported on the first support portion 51. Next, the pair of first punches 41 are moved in the first direction The insulating coating 3 is peeled off along the side surface 16 and the second side surface 17. Thereby, as shown in FIG. 13B, a first peeling step is performed in which the insulating coating 3 on the first side surface 16 and the second side surface 17 of the conductive wire 1 is simultaneously peeled off (step ST1 in FIG. 1).

Next, as shown in FIG. 14A, the first side surface 16 and the second side surface 17 are supported by a pair of correction molds 93 and pressed in a direction toward each other in the second direction Y. Then, as shown in FIG. 14B, a convex portion 15 protruding in the second direction Y from the first side surface 16 and second side surface 17 of the conductor 2 is formed in the concave portion 930 using the modification mold 93. Further, the sagging portion 6 generated on the third side surface 18 of the conductor 2 in the first peeling step is moved from the fourth side surface 19 to the third side surface 18, in the other direction X2 of the first direction X.

As shown in FIG. 14B, in the first peeling step, the sagging portion 6 that was generated in the direction from the third side surface 18 in one direction X1 of the first direction X to the fourth side surface 19 is While moving in the direction X2, the insulating coating 3 also moves in the other direction X2 of the first direction X. That is, the length W2 of the conductor 2 in the second direction Y in the repair process is changed so that the sagging part 6 generated on the third side surface 18 of the conductor 2 in the first peeling process is It moves from one direction X to the other direction X2 and presses down to a length W3 (length excluding the convex portion 15) that is short enough to form a correction location 63.

Next, as shown in FIG. 15A, the correction unit 132 is retracted. Next, as shown in FIG. 15B, similarly to the first embodiment, the second side surface 17 of the conductor 2 is provided with a second support by housing the convex portion 15 formed on the second side surface 17 in the concave portion 220. It is supported at part 522. Next, the insulation coating 3 on the third side surface 18 and the fourth side surface 19 of the conductor 2 is removed in one direction Y1 in the second direction Y along the third side surface 18 and the fourth side surface 19 using a pair of second punches 42. Peel it toward the As a result, as shown in FIG. 14C, the conductive wire 1 undergoes a second peeling process in which the fourth side surface 19 of the conductor 2 and the insulating coating 3 on the third side surface 18 whose sagging portion 6 has been corrected in the "correction step" are simultaneously removed. The process is carried out. Convex portions 15 are present on the first side surface 16 and the second side surface 17 of the conductor 2 (step ST3 in FIG. 1).

Next, a wiring method using the conducting wire 1 in which a portion of the insulating coating 3 is peeled off and an exposed portion 200 of the conductor 2 is formed will be described. As shown in FIGS. 16A and 16B, the exposed portions 200 of the conductors 2 of the two conductive wires 1 are brought into contact with each other. Next, the locations where the exposed portions 200 are in contact with each other are welded. In the welding process, the exposed portions 200 of the conductors 2 are welded together to form a welded portion, and the conductors 2 of the exposed portions 200 that are in contact with each other are joined. In the process of welding the different conducting wires 1 together, since the convex portion 15 is present on the conductor 2 near the welding portion, cooling performance after welding is improved and processing time can be shortened. Further, it is possible to suppress the insulating resin 13, which will be described later, from falling off more than in the case where the convex portion 15 is not provided.

Next, as in each of the above embodiments, as shown in FIGS. 8A and 8B, the welded portion of the exposed portion 200 of the conductor 2 of the conducting wire 1 is processed with insulating resin 13 for the purpose of preventing short circuits. The insulating resin 13 covers the welded portion of each conducting wire 1, the end face of the conductor 2, the exposed portion 200 of the conductor 2, and the insulating coating 3 by flowing and fixing using thermoplasticity.

According to the peeling method of Embodiment 3 configured as above, not only the same effects as those of the above embodiments are achieved, but also
In the first peeling step, one direction of the first direction is from the third side surface to the fourth side surface,
In the modification step, while supporting the first side surface and the second side surface, the first side surface and the second side surface of the conductor are pressed in a direction toward each other in the second direction, and the first peeling step is performed. Since the sagging portion generated on the third side surface of the conductor is moved from the fourth side surface toward the third side surface,
Further, the first peeling portion is such that one direction of the first direction is a direction from the third side surface to the fourth side surface,
The modifying section presses the first side surface and the second side surface of the conductor in a direction toward each other in the second direction while supporting the first side surface and the second side surface, thereby forming the first peeling section. Since the sagging portion generated on the third side surface of the conductor is moved from the fourth side surface toward the third side surface,
The sagging part that occurred in the conductor is corrected by deforming the conductor,
It is possible to reliably suppress the residual insulation coating of the conductor, and it is possible to reliably secure the cross-sectional area of the conductor.

Furthermore, in the modification step, a convex portion protruding in the second direction is formed on the first side surface and the second side surface of the conductor.
Further, the modification portion forms a convex portion protruding in the second direction on the first side surface and the second side surface of the conductor;
A convex portion is formed on the conductor,
The accuracy of conductor wiring is improved.

Furthermore, according to the conducting wire of Embodiment 3 configured as described above,
In the conductor using the above peeling method,
having an exposed portion of the conductor that is not covered with the insulating coating;
Since the first side surface and the second side surface of the exposed portion are provided with a convex portion protruding in the second direction,
The accuracy of conductor wiring is improved.

Embodiment 4.
In this embodiment, a rotating electrical machine and a method of manufacturing the rotating electrical machine using the conducting wire 1 formed in each of the above embodiments will be described. FIG. 17 is a flowchart showing a method for manufacturing a rotating electric machine according to the fourth embodiment. FIG. 18 is a sectional view showing the structure of a rotating electrical machine formed by the method for manufacturing a rotating electrical machine shown in FIG. 17.

In FIG. 18, a rotating electric machine 21 includes a stator 22 having a stator core 24 having a stator coil 26 around which a conducting wire 1 is wound, a rotor core 28 having a permanent magnet 29 fixed to the outer periphery, and a rotating The child core 28 has a rotating shaft 27 fixed to its outer peripheral surface. A rotor 23 is arranged to face the stator 22 in the radial direction through a gap G, a frame 25 fixes the stator 22 to the inner circumferential surface, and a rotating shaft is rotatably attached to the frame 25. and a supporting bearing (not shown).

Next, a method for manufacturing the rotating electric machine configured as described above will be described with reference to FIG. 17. First, a conductor 2 (conducting wire 1) having a predetermined developed length and covered with an insulating coating 3 is prepared (step ST11 in FIG. 17). Next, the insulating coating 3 is peeled off at a predetermined distance from both ends of the conductive wire 1 (step ST12 in FIG. 17). In step ST12, the insulating coating 3 is peeled off using the peeling method and peeling apparatus of any of the above embodiments, and the exposed portion 200 is formed on the conductor 2 of the lead wire 1.

Next, the conducting wire 1 is subjected to a predetermined bending process and molded into the shape of the stator coil 26 (step ST13 in FIG. 17). Next, a plurality of stator coils formed in the above step are inserted into the stator core 24 (step ST14 in FIG. 17). Next, the terminals of the predetermined conducting wires 1 are joined using, for example, TIG (Tungsten Inert Gas) welding, MIG (Metal Inert Gas Welding) welding, laser welding, or brazing to form a welded part, and the stator A coil circuit is formed (step ST15 in FIG. 17). Note that this corresponds to the step in FIG. 7 shown in the first embodiment.

Next, the joint portion of the step of the conducting wire 1 protruding from the stator core 24 is subjected to an insulation treatment using a thermosetting insulating material, and the insulating resin 13 is installed (step ST16 in FIG. 17). Note that this corresponds to the step in FIG. 8 shown in the first embodiment. Next, the rotor 23 is arranged to face the stator 22 with the gap G interposed therebetween to form the rotating electric machine 21.

According to the rotating electrical machine and the method for manufacturing the rotating electrical machine of the fourth embodiment configured as described above, not only can the same effects as those of the above embodiments be achieved, but also
Since the stator includes a stator wound with the conductive wire described above and a rotor disposed opposite to the stator with a gap in between,
Further, since the rotor is disposed opposite to the stator, which is wound with the conductive wire from which part of the insulating coating has been peeled off by the peeling method described above, with a gap in between,
A rotating electric machine with excellent accuracy can be obtained.

Although this disclosure describes various exemplary embodiments and examples, the various features, aspects, and functions described in one or more embodiments may differ from those of a particular embodiment. The invention is not limited to application, and can be applied to the embodiments alone or in various combinations.
Accordingly, countless variations not illustrated are envisioned within the scope of the technology disclosed herein. For example, this includes cases where at least one component is modified, added, or omitted, and cases where at least one component is extracted and combined with components of other embodiments.

1 conductive wire, 101 first peeled part, 102 second peeled part, 103 second peeled part,
12 recessed part, 13 insulating resin, 131 correction part, 132 correction part, 133 correction part,
15 convex portion, 16 first side surface, 17 second side surface, 18 third side surface, 19 fourth side surface,
2 conductor, 200 exposed part, 21 rotating electric machine, 22 stator, 220 recessed part,
23 rotor, 24 stator core, 25 frame, 26 stator coil,
27 rotating shaft, 28 rotor core, 29 permanent magnet, 3 insulating coating, 41 first punch, 42 second punch, 51 first support section, 52 second support section, 522 second support section,
6 sag part, 61 correction part, 62 correction part, 63 correction part, 7 burr part,
70 range, 71 correction location, 81 correction jig, 82 correction jig, 91 correction mold,
92 correction mold, 920 convex portion, 93 correction mold, 930 recess, G void,
H1 length, H2 length, H5 length, H6 length, T location, W1 length,
W2 length, W3 length, X first direction, X1 one direction, X2 other direction, Y second direction, Y1 one direction, Y2 other direction, Z longitudinal direction.

Claims (14)

A peeling method for peeling off the insulation coating of a conductor made of a conductor covered with an insulation coating, the method comprising:
The conductor has a rectangular cross-sectional shape, a first side surface and a second side surface which are a pair of opposite sides in a first direction of the rectangle, and a first side surface and a second side surface which are a pair of opposite sides in a second direction perpendicular to the first direction. having three sides and a fourth side,
a first peeling step of peeling off the insulating coating on the first side surface and the second side surface of the conductor in one direction of the first direction along the first side surface and the second side surface;
a second peeling step of peeling off the insulating coating on the third side surface and the fourth side surface of the conductor in the second direction along the third side surface and the fourth side surface;
Between the first peeling step and the second peeling step, a correction step of correcting the cross-sectional shape of the conductor deformed in the first peeling step ,
In the first peeling step, one direction of the first direction is from the third side surface to the fourth side surface,
In the modification step, the fourth side surface is supported while avoiding both ends in the second direction of the third side surface that are opposite to both ends in the second direction pushed on the fourth side surface. Pushing both ends of the second direction in the other direction of the first direction, the burr portion generated on the fourth side surface of the conductor in the first peeling step is moved from the fourth side surface toward the third side surface. and moving a sagging portion generated on the third side surface of the conductor in the first peeling step from the fourth side surface to the third side surface . The first peeling step involves simultaneously peeling off the insulating coating on the first side surface and the second side surface of the conductor.
2. The peeling method according to claim 1, wherein in the second peeling step, the insulating coatings on the third side surface and the fourth side surface of the conductor are simultaneously peeled off. A peeling method for peeling off the insulation coating of a conductor made of a conductor covered with an insulation coating, the method comprising:
The conductor has a rectangular cross-sectional shape, a first side surface and a second side surface which are a pair of opposite sides in a first direction of the rectangle, and a first side surface and a second side surface which are a pair of opposite sides in a second direction perpendicular to the first direction. having three sides and a fourth side,
a first peeling step of peeling off the insulating coating on the first side surface and the second side surface of the conductor in one direction of the first direction along the first side surface and the second side surface;
a second peeling step of peeling off the insulating coating on the third side surface and the fourth side surface of the conductor in the second direction along the third side surface and the fourth side surface;
Between the first peeling step and the second peeling step, a correction step of correcting the cross-sectional shape of the conductor deformed in the first peeling step,
In the first peeling step, one direction of the first direction is from the third side surface to the fourth side surface,
The modification step includes forming recesses recessed in the second direction on the first side surface and the second side surface of the conductor while supporting the first side surface, the second side surface, and the third side surface; A peeling method in which a sagging portion generated on the third side surface of the conductor in the first peeling step is moved from the fourth side surface toward the third side surface. A peeling method for peeling off the insulation coating of a conductor made of a conductor covered with an insulation coating, the method comprising:
The conductor has a rectangular cross-sectional shape, a first side surface and a second side surface which are a pair of opposite sides in a first direction of the rectangle, and a first side surface and a second side surface which are a pair of opposite sides in a second direction perpendicular to the first direction. having three sides and a fourth side,
a first peeling step of peeling off the insulating coating on the first side surface and the second side surface of the conductor in one direction of the first direction along the first side surface and the second side surface;
a second peeling step of peeling off the insulating coating on the third side surface and the fourth side surface of the conductor in the second direction along the third side surface and the fourth side surface;
Between the first peeling step and the second peeling step, a correction step of correcting the cross-sectional shape of the conductor deformed in the first peeling step,
In the first peeling step, one direction of the first direction is from the third side surface to the fourth side surface,
In the modification step, while supporting the first side surface and the second side surface, the first side surface and the second side surface of the conductor are pressed in a direction toward each other in the second direction, and the first peeling step is performed. A peeling method in which a sagging portion generated on the third side surface of the conductor is moved from the fourth side surface toward the third side surface. 5. The peeling method according to claim 4 , wherein in the modification step, a convex portion protruding in the second direction is formed on the first side surface and the second side surface of the conductor. A peeling device for peeling off the insulation coating of a conductor made of a conductor covered with an insulation coating,
The conductor has a rectangular cross-sectional shape, a first side surface and a second side surface which are a pair of opposite sides in a first direction of the rectangle, and a first side surface and a second side surface which are a pair of opposite sides in a second direction perpendicular to the first direction. having three sides and a fourth side,
a first peeling section that peels off the insulating coating on the first side surface and the second side surface of the conductor in one direction of the first direction along the first side surface and the second side surface;
a second peeling section that peels off the insulating coating on the third side surface and the fourth side surface of the conductor in the second direction along the third side surface and the fourth side surface;
a correction part that corrects the cross-sectional shape of the conductor deformed at the first peeling part ,
The first peeling portion is such that one direction of the first direction is from the third side surface to the fourth side surface,
The correction portion supports the third side while avoiding both ends in the second direction of the third side that are opposite to both ends in the second direction that are pushed on the fourth side. Pushing both ends of the second direction in the other direction of the first direction, the burr portion generated on the fourth side surface of the conductor at the first peeling portion is moved from the fourth side surface toward the third side surface. A peeling device that moves and moves a sagging portion generated on the third side surface of the conductor in the first peeling section from the fourth side surface to the third side surface . The first peeling unit simultaneously peels off the insulating coating on the first side surface and the second side surface of the conductor,
The peeling device according to claim 6 , wherein the second peeling section simultaneously peels off the insulating coating on the third side surface and the fourth side surface of the conductor. A peeling device for peeling off the insulation coating of a conductor made of a conductor covered with an insulation coating,
The conductor has a rectangular cross-sectional shape, a first side surface and a second side surface which are a pair of opposite sides in a first direction of the rectangle, and a first side surface and a second side surface which are a pair of opposite sides in a second direction perpendicular to the first direction. having three sides and a fourth side,
a first peeling section that peels off the insulating coating on the first side surface and the second side surface of the conductor in one direction of the first direction along the first side surface and the second side surface;
a second peeling section that peels off the insulating coating on the third side surface and the fourth side surface of the conductor in the second direction along the third side surface and the fourth side surface;
a correction part that corrects the cross-sectional shape of the conductor deformed at the first peeling part,
The first peeling portion is such that one direction of the first direction is from the third side surface to the fourth side surface,
The modification portion forms a concave portion recessed in the second direction on the first side surface and the second side surface of the conductor while supporting the first side surface, the second side surface, and the third side surface, and A peeling device that moves a sagging portion generated on the third side surface of the conductor in a direction from the fourth side surface to the third side surface in a first peeling section. A peeling device for peeling off the insulation coating of a conductor made of a conductor covered with an insulation coating,
The conductor has a rectangular cross-sectional shape, a first side surface and a second side surface which are a pair of opposite sides in a first direction of the rectangle, and a first side surface and a second side surface which are a pair of opposite sides in a second direction perpendicular to the first direction. having three sides and a fourth side,
a first peeling section that peels off the insulating coating on the first side surface and the second side surface of the conductor in one direction of the first direction along the first side surface and the second side surface;
a second peeling section that peels off the insulating coating on the third side surface and the fourth side surface of the conductor in the second direction along the third side surface and the fourth side surface;
a correction part that corrects the cross-sectional shape of the conductor deformed at the first peeling part,
The first peeling part is such that one direction of the first direction is in a direction from the third side surface to the fourth side surface,
The modifying section presses the first side surface and the second side surface of the conductor in a direction toward each other in the second direction while supporting the first side surface and the second side surface, thereby forming the first peeling section. A peeling device that moves a sagging portion generated on the third side surface of the conductor from the fourth side surface toward the third side surface. The peeling device according to claim 9 , wherein the modification section forms a convex portion protruding in the second direction on the first side surface and the second side surface of the conductor. A conductive wire using the peeling method according to claim 3 ,
having an exposed portion of the conductor that is not covered with the insulating coating;
The conducting wire includes a concave portion recessed in the second direction on the first side surface and the second side surface of the exposed portion. A conductive wire using the peeling method according to claim 5 ,
having an exposed portion of the conductor that is not covered with the insulating coating;
The conductive wire includes a convex portion protruding in the second direction on the first side surface and the second side surface of the exposed portion. A rotating electric machine comprising: a stator wound with the conducting wire according to claim 11 or 12 ; and a rotor disposed opposite to the stator with a gap therebetween. A rotating electrical machine in which a rotor is disposed opposite to a stator wound with the conductive wire from which a portion of the insulating coating has been peeled off by the peeling method according to any one of claims 1 to 5, with a gap interposed therebetween. manufacturing method.