JP2014192917A - Iron core member, method of manufacturing laminated core of dynamo-electric machine, laminated core of dynamo-electric machine, rotor of dynamo-electric machine and dynamo-electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an iron core member which allows for enhancement of efficiency and assembly accuracy of a dynamo-electric machine, while enhancing the assembly workability, and to provide a method for manufacturing the laminated core of a dynamo-electric machine, the laminated core of a dynamo-electric machine, a rotor of a dynamo-electric machine, and a dynamo-electric machine.SOLUTION: An iron core member 4 consists of a plurality of yokes 41a, and teeth 41b projecting from respective yoke 41a perpendicularly to the transverse direction (Y direction) of the iron core member 4, where the ends of adjoining yoke 41a are coupled linearly. Guide holes 4a, 4b are provided in the boundary 41c of respective yoke 41a, and the guide holes 4a, 4b are formed such that the width of the iron core member 4 in the longitudinal direction (X direction) is smaller than the width of the iron core member 4 in the traverse direction (Y direction).

Description

  The present invention relates to an iron core member that contributes to improvement of magnetic properties and assembly workability of a laminated core, a method of manufacturing a laminated core of a rotating electric machine, a laminated core of a rotating electric machine, a stator of the rotating electric machine, and a rotating electric machine.

In the conventional laminated iron core of rotating electrical machines, in order to improve the material retention of the iron core and the assembly workability, after forming the teeth part on the electromagnetic steel sheet, the molded iron core member is wound in the inner winding or outer winding direction. It is manufactured by laminating and forming iron core members in a spiral shape.
Furthermore, in order to make it easy to wind an iron core member, the V-shaped notch part is provided between each adjacent teeth part (for example, patent document 1).

Japanese Patent Laid-Open No. 02-023048 (Claim 1, Claim 2, FIG. 1, FIG. 3)

According to such a laminated core manufacturing technique, when a core member having a wide yoke portion is bent, the inner peripheral side of the core member swells in the stacking direction, and this swell is not a gap between adjacent core members in the stacking direction. Causing the accuracy of the laminated iron core to deteriorate.
Furthermore, when this gap is large, an extra pressurizing process for eliminating the gap is required, and there is a problem in that the number of assembly work steps increases.
In addition, when the large notch is on the teeth portion side, there is a problem that the efficiency of the rotating electrical machine is deteriorated because the notch cuts off the magnetic flux of the rotating electrical machine.

  The present invention has been made to solve the above-described problems, and improves the efficiency and assembly accuracy of the rotating electrical machine and improves the assembly workability, the manufacturing method of the laminated core of the rotating electrical machine, the rotation An object of the present invention is to provide a laminated core of an electric machine, a stator of a rotary electric machine, and a rotary electric machine.

The iron core member according to the present invention is
In one strip-shaped iron core member used for manufacturing one laminated iron core of a rotating electrical machine,
The iron core member includes a plurality of yoke portions,
It consists of a tooth part that protrudes perpendicularly to the short direction of the iron core member from each yoke part,
Consists of linearly connecting the ends of adjacent yoke parts,
It has a guide hole at each boundary part of each yoke part,
The guide hole is formed such that the width in the longitudinal direction of the iron core member is smaller than the width in the short direction of the iron core member.

A method for manufacturing a laminated iron core of a rotating electrical machine according to the present invention includes:
In the manufacturing method of a laminated iron core of a rotating electrical machine that manufactures one laminated iron core of a rotating electrical machine using a single belt-shaped electromagnetic steel sheet,
From a magnetic steel sheet, it has a connecting yoke part in a state where ends of a plurality of adjacent yoke parts are linearly connected by press working, and a tooth part protruding perpendicularly to the short direction of the magnetic steel sheet from each yoke part A die cutting process for forming an iron core member;
A punching process in which a guide hole in which the width in the longitudinal direction of the iron core member is smaller than the width in the short direction of the iron core member is punched in the boundary portion of each yoke part;
A diameter expansion process for press-fitting a diameter-expanding member into the guide hole, and bending the core member in a spiral shape by expanding the guide hole in the longitudinal direction of the core member;
And a laminating step of laminating iron core members in a spiral shape after the diameter expanding step.

The laminated iron core of the rotating electrical machine according to this invention is
A laminated iron core of a rotating electric machine configured by laminating a belt-shaped iron core member in a spiral shape,
The iron core member has a plurality of yoke portions and a plurality of teeth portions that protrude perpendicularly to the short direction of the iron core member from each yoke portion, and the end portions of the adjacent yoke portions are connected to each other and formed integrally. And
The laminated iron core is configured by laminating iron core members in a spiral shape,
Each yoke portion has a hole penetrating in the stacking direction of the core members.
A stator of a rotating electrical machine according to the present invention includes the above-described laminated iron core of the rotating electrical machine.
A rotating electric machine according to the present invention includes the stator of the rotating electric machine described above.

According to the iron core member of the present invention,
Even in the case of an iron core member with a wide yoke part, guide holes are provided at the boundary of the yoke part, so the diameter of the guide hole is increased by press-fitting the diameter-enlarging member, causing swelling in the stacking direction of the iron core members. Without being bent, the iron core member can be spirally bent and laminated to form a laminated iron core.

According to the method for manufacturing a laminated core of a rotating electrical machine according to the present invention,
By providing a guide hole in the iron core member and press-fitting a diameter-enlarged member into the guide hole, the diameter of the guide hole can be increased, the iron core member can be bent spirally, and laminated to form a laminated iron core. Therefore, it is possible to improve the material retention and assembly workability of the laminated iron core.

According to the laminated iron core of the rotating electrical machine, the stator of the rotating electrical machine, and the rotating electrical machine according to the present invention,
By arranging the larger guide hole on the outer peripheral side of the laminated core, there is no conventional way to prevent the efficiency deterioration of the rotating electric machine from being generated without generating a gap that divides the magnetic path on the teeth part side where the magnetic flux easily passes. Has a remarkable effect.

It is a top view which shows the iron core member which concerns on Embodiment 1 of this invention. It is a perspective view which shows the state which has formed the laminated iron core from the iron core member. It is a top view which shows the shape of the guide hole before and behind press-fitting of a diameter-expansion member, and a sectional view of a diameter-expansion member and iron core member before and after press-fitting of a diameter-expansion member. It is sectional drawing of the rotary electric machine which concerns on Embodiment 1 of this invention. It is a top view which shows the state before and behind diameter expansion of three guide holes. It is a top view which shows the state before and behind diameter expansion of the guide hole which has a notch part. It is a top view which shows the state before and behind diameter expansion of a fan-shaped guide hole. It is a top view which shows the state before and behind diameter expansion of the guide hole which concerns on Embodiment 2 of this invention. It is a top view which shows the press range of the out-of-plane deformation prevention member which concerns on Embodiment 2 of this invention, and sectional drawing of the edge shaping member and iron core member of a shaping process. It is a top view which shows the diameter expansion process by Embodiment 3 of this invention.

Embodiment 1 FIG.
Hereinafter, an iron core member, a method of manufacturing a laminated core of a rotating electrical machine, a laminated core of a rotating electrical machine, a stator of the rotating electrical machine, and the rotating electrical machine according to Embodiment 1 of the present invention will be described with reference to the drawings.
First, an iron core member used for manufacturing one laminated iron core of a rotating electrical machine will be described.
FIG. 1 is a plan view of the iron core member 4.
The iron core member 4 includes a plurality of yoke portions 41a and perpendicular to each of the yoke portions 41a in the short direction of the iron core member 4 (Y direction shown in FIG. 1, hereinafter referred to simply as Y direction). It has the teeth part 41b which protrudes.
And the connection yoke part 4A comprised by connecting the edge parts of each adjacent yoke part 41a linearly is formed, and one sheet | seat-like iron core member 4 is comprised.
A portion where the ends of adjacent yoke portions 41a are connected to each other is defined as a boundary portion 41c.

Each boundary portion 41c has guide holes 4a and 4b.
The shape of the guide holes 4a and 4b is such that the width of the guide holes 4a and 4b in the longitudinal direction of the iron core member 4 (arrow X shown in FIG. 1, hereinafter referred to simply as the X direction) It is an elliptical shape formed smaller than the width.
In addition, the width in the X direction of each of the guide hole 4a and the guide hole 4b is formed so that the width in the X direction of the guide hole is increased in order from the outer peripheral side of the laminated core.
That is, the width in the X direction of the guide hole 4a on the outer peripheral side of the laminated core is larger than the width of the guide hole 4b.

Next, a manufacturing process for forming the iron core member 4 from a strip-shaped electromagnetic steel sheet will be described.
The iron core member 4 includes a connecting yoke portion 4A in a state in which ends of the plurality of yoke portions 41a are linearly connected to each other by pressing from a strip-shaped electromagnetic steel plate (not shown), and teeth protruding perpendicularly to the short direction of the electromagnetic steel plate. The part 41b is punched (die cutting process).
Next, the guide holes 4a and 4b whose width in the X direction is smaller than the width in the Y direction are punched out in the boundary portion 41c of the yoke portion 41a (hole punching step).
When a punching process for providing guide holes 4a and 4b is performed before the punching process for punching the yoke part 41a and the teeth part 41b, the guide holes 4a and 4b are punched from the yoke part 41a and the tooth part 41b. It may be used as a landmark.
Thus, the iron core member 4 is formed from an electromagnetic steel plate.

Next, a laminated core constructed by laminating spirally from the iron core member 4 will be described.
FIG. 2 is a perspective view showing a state in which the laminated iron core 5 is formed by laminating the iron core members 4 in a spiral shape.
FIG. 3A is a view showing a state of the guide holes 4a and 4b before the diameter-expanding member 7 is press-fitted.
FIG. 3B is a cross-sectional view showing a state before the diameter-expanding member 7 is press-fitted into the guide hole 4a.
FIG. 3C is a view showing a state of the guide holes 4 a and 4 b after the diameter-expanding member 7 is press-fitted.
FIG. 3D is a cross-sectional view showing a state after the diameter-expanding member 7 is press-fitted into the guide hole 4a.
FIG. 4 is a plan view of the rotating electrical machine 100 including the stator 1 having the laminated iron core 5.
First, the diameter-expanding member 7 that is press-fitted into the guide holes 4a and 4b will be described.
As shown in FIG. 3B, the diameter-expanding member 7 is formed such that the width of the diameter-expanding member 7 in the X direction is larger than the width of the guide hole 4a.
Moreover, although not shown in figure, the width | variety of the Y direction of the diameter expansion member 7 is the same as that of the guide hole 4a, or is small.
The diameter-expanding member that is press-fitted into the guide hole 4b is similarly configured.

Next, a diameter expansion process for press-fitting the diameter expansion member 7 into the guide holes 4a and 4b, and a lamination process for laminating the iron core member 4 in a spiral manner will be described.
When the diameter-expanding member 7 is press-fitted into the guide holes 4 a and 4 b of the iron core member 4, the guide holes 4 a and 4 b expand in the X direction, and the tooth portion 41 b of the iron core member 4 is on the inner peripheral side of the laminated core 5. So that it bends spirally (increase diameter process).
As described above, the width in the X direction of the guide hole 4a located on the outer peripheral side of the laminated core is formed to be larger than the width in the X direction of the guide hole 4b located on the inner peripheral side of the laminated core. Yes.
Therefore, the core member 4 can be configured to bend at a predetermined angle by increasing the size of each guide hole 4a, 4b in order of the outer peripheral side of the laminated core and changing the amount of diameter expansion.
And as shown in FIG. 2, the laminated iron core 5 is comprised by laminating | stacking helically the iron core member 4 formed by bending helically (lamination process).

Thus, the laminated iron core 5 configured by laminating the iron core members 4 in a spiral form has a plurality of yoke parts 41 a and tooth parts 41 b protruding at equal intervals on the radially inner side of the laminated iron core 5.
Moreover, it has the hole 54a, 54b penetrated in the lamination direction of the iron core member 4 in the boundary part 41c of each yoke part 41a.
And although not shown in figure, the stator 1 is formed by winding a coil around the teeth part 41b of the laminated iron core 5.
Next, as shown in FIG. 4, the rotor 2 including the shaft 21 extending in the axial direction of the laminated core 5 and the rotor core 22 positioned on the outer peripheral side is disposed on the inner periphery of the stator 1. Thus, the rotating electrical machine 100 is obtained.

The number of guide holes for one boundary 41c is not limited to two, and may be three or more or one.
Fig.5 (a) is a figure which shows the state before diameter expansion of three guide holes.
FIG. 5B is a diagram illustrating a state after the diameter expansion of the three guide holes.
Three guide holes 4g, 4h, and 4i are formed for one boundary portion 41c.
As described above, when three or more guide holes are formed for one boundary portion 41c, the iron core member 4 is more easily bent.

The shape of the guide hole is not limited to the elliptical shape as described above.
For example, the shape described below may be used.
Fig.6 (a) is a top view which shows the state before diameter expansion of the guide hole which has a notch part.
FIG. 6B is an enlarged view of the main part of FIG.
FIG.6 (c) is a top view which shows the state after diameter expansion of the guide hole which has a notch part.
FIG.6 (d) is a principal part enlarged view of FIG.6 (c).
Fig.7 (a) is a principal part enlarged view which shows the state before diameter expansion of a fan-shaped guide hole.
FIG.7 (b) is a principal part enlarged view which shows the state after diameter expansion of a fan-shaped guide hole.
First, the guide holes 4c and 4d shown in FIG. 6 will be described.
As shown in FIGS. 6A and 6B, at both ends in the Y direction of the edge of the circular guide hole 4c, cut portions 4c1 and 4c1 are provided in the Y direction.
The cut portion 4c1 is formed on the side that becomes the outer periphery of the laminated iron core in the Y direction.
The cut portion 4c2 is formed on the side that becomes the inner periphery of the laminated iron core in the Y direction.
Thus, since the notches 4c1 and 4c2 are formed at both ends in the Y direction of the guide hole 4c, the guide hole 4c is formed so that the width in the X direction is smaller than the width in the Y direction.
Similarly, the guide hole 4d has notches 4d1 and 4d2 in the Y direction at both ends in the Y direction of the edge of the guide hole 4d, and the width in the X direction is smaller than the width in the Y direction. ing.

When a diameter-enlarging member is press-fitted into the guide holes 4c and 4d, the notches 4c1, 4c2, 4d1, and 4d2 of the guide holes 4c and 4d expand in the X direction as shown in FIG. Is easy to spread, and the iron core member 4 is easily bent.
In addition, when the guide holes 4c and 4d are expanded, even if a force is applied in the Y direction at the edge of the guide holes 4c and 4d, the notches 4c1, 4c2, 4d1, and 4d2 are provided. Can be prevented from expanding in the Y direction.
Here, the cut portion is for bending the core member by increasing the diameter expansion amount on the outer peripheral side of the laminated core, and is formed on the inner peripheral side of the laminated core at the edge of the guide hole. Even if it does not exist, even if it forms only in the side used as an outer periphery, it can respond.

Next, the fan-shaped guide hole 4e shown in FIG. 7 will be described.
As shown to Fig.7 (a), the shape of the guide hole 4e is a fan type extended toward the side used as the outer periphery of a laminated iron core from the side used as the inner periphery of a laminated iron core.
When a fan-shaped diameter-expanded member with a wide tip (not shown) is press-fitted into the guide hole 4e, the fan-shaped shape further expands in the X direction as shown in FIG.
In this way, when the shape of the guide hole is a fan shape, even if there is one for one connecting portion 41c, the outer peripheral side of the laminated core becomes easier to expand than the inner peripheral side, The iron core member can be bent.

As described above, according to the manufacturing method of the iron core member and the laminated iron of the rotating electrical machine according to the first embodiment of the present invention, the core member is bent spirally by press-fitting the diameter-expanding member into the guide hole and expanding the diameter. Since the laminated iron core is formed by laminating, even an iron core member having a wide yoke portion can be bent and laminated in a spiral manner by a simple operation of increasing the diameter of the guide hole by the enlarged member.
Further, the iron core member can be spirally bent and laminated without causing swelling in the lamination direction of the iron core member.
In addition, by providing a plurality of guide holes for one boundary, increasing the width of the guide hole in the X direction toward the outer periphery of the laminated core, and increasing the amount of diameter expansion, the core member can be bent easily. Become.
In addition, since the width in the X direction of the guide hole is made smaller toward the inner circumference of the laminated iron core, the magnetic flux is easier to pass toward the inner circumference of the laminated iron core, minimizing magnetic path separation. it can.

Furthermore, since the width of the guide hole in the Y direction is the same as or larger than that of the diameter-expanding member, the edge of the guide hole can be prevented from protruding in the Y direction, and the core accuracy can be improved. .
Thus, since a laminated iron core can be constituted by laminating belt-like iron core members in a spiral shape, the material deficiency and assembly workability of the laminated iron core can be improved.

  Furthermore, according to the stator of the rotating electrical machine having such a laminated iron core and the rotating electrical machine including the stator, the guide hole used for the diameter expansion is arranged on the outer peripheral side of the laminated core, so that the magnetic flux is most generated. It is possible to suppress the deterioration of the efficiency of the rotating electric machine without generating a gap for dividing the magnetic path on the inner peripheral side of the laminated core that is easy to pass, and there is an effect of reducing energy consumption.

Embodiment 2. FIG.
Hereinafter, the iron core member according to the second embodiment of the present invention, the method for manufacturing the laminated iron core of the rotating electric machine, and the laminated iron core of the rotating electric machine will be described based on the drawings with respect to the parts different from the first embodiment.
The difference between the first embodiment and the present embodiment is that the core member is provided with a notch, and the manufacturing process of the method for manufacturing the laminated core increases.
Other parts are the same as those in the first embodiment.

FIG. 8A is a diagram illustrating a state before the core member 204 is expanded.
FIG. 8B is a diagram illustrating a state after the core member 204 has been expanded in diameter.
The core member 204 has a notch 41c1 formed on the surface of the boundary 41c that is the outer periphery of the laminated core, and a notch 41c2 formed on the surface of the boundary 41c that is the inner periphery of the stacked core.
The notches 41c1 and 41c2 are formed when the guide holes 4a and 4b are formed (a hole punching process and a notch forming process).
In the notch forming process, the notch forming process may be performed before the hole punching process, or the notch forming process may be performed after the hole punching process.

Next, a manufacturing process for forming a laminated core by laminating from the iron core member 204 in a spiral manner will be described.
FIG. 9A is a diagram illustrating a range in which the out-of-plane deformation preventing member 8 presses the iron core member 204.
FIG. 9B is an enlarged view of a main part of FIG.
FIG. 9C is a cross-sectional view showing a state in which the out-of-plane deformation preventing member 8 presses the iron core member 204.
FIG. 9D is a cross-sectional view showing a mode in which the edge shaping member 9 presses the iron core member 204.
First, the curing process of pressing the periphery of the guide holes 4a and 4b with the out-of-plane deformation preventing member 8 will be described.
The out-of-plane deformation preventing member 8 has a predetermined width corresponding to the edges 4a1 and 4b1 of the guide holes 4a and 4b, and the periphery 42 of the guide holes 4a and 4b (shaded portions in FIGS. 9A and 9B). Are pressed in the stacking direction of the iron core member 204 to such an extent that the iron core member 204 can slide.

Next, the diameter expansion member 207 is press-fitted into the guide holes 4a and 4b (diameter expansion process).
Then, since the out-of-plane deformation preventing member 8 presses the periphery 42 of the guide holes 4a and 4b to such an extent that the iron core member 4 extends in the X direction, when the iron core member 204 is bent, the guide holes 4a and 4b Prevents out-of-plane deformation occurring in the periphery 42.
Further, since the notches 41c1 and 41c2 are provided, the arc shape of the notch 41c1 expands in the X direction, and the arc shape of the notch 41c2 contracts in the X direction, whereby the iron core member 204 is easily bent.

Next, the shaping process of pressing the edges 4a1, 4b1 of the guide holes 4a, 4b in the stacking direction of the iron core member 204 by the edge shaping member 9 will be described.
As shown in FIGS. 9 (c) and 9 (d), the edge shaping member 9 is coupled to the diameter expanding member 207.
The edge shaping member 9 presses the edges 4a1, 4b1 of the guide holes 4a, 4b in the laminating direction of the core member 4 immediately after the diameter-enlarging member 207 is press-fitted, and shapes the bulge in the laminating direction generated at the edges 4a1, 4b1. To do.
Then, the iron core member 204 is laminated | stacked helically, and comprises a laminated iron core.

As described above, according to the iron core member of the second embodiment of the present invention, the method for manufacturing the laminated iron core of the rotating electric machine, and the laminated iron core of the rotating electric machine, the edge of the guide hole is formed into the edge shaping member after press-fitting the diameter-expanding member. By pressing in the laminating direction of the iron core member, the swelling in the laminating direction that occurs when the guide hole is expanded can be suppressed.
Further, before press-fitting the diameter-expanding member, the out-of-plane deformation that occurs around the guide hole due to the press-fitting of the diameter-expanding member is caused by pressing the periphery of the guide hole in the stacking direction of the core member by the out-of-plane deformation preventing member. Can be prevented.

Moreover, when a notch part is provided in the surface used as the outer periphery of a laminated iron core, it will become easy to bend an iron core member by expanding a notch part to a X direction, and a core precision and assembly workability | operativity will improve more.
Furthermore, when expanding the guide hole, even if a force that expands the edge of the guide hole in the Y direction is generated, the outer peripheral side of the laminated core and the inner peripheral side are provided with cutout portions. The protrusion which generate | occur | produces in the side and inner peripheral side can be suppressed.
Therefore, even when the outer side of the laminated iron core is covered with a frame in the process after the laminated iron core is constructed, the assembling workability is not impaired by the protrusion.
Moreover, since the protrusion which arises to the inner peripheral side of a laminated iron core can be prevented, even when a coil is wound around a teeth part or an insulator is inserted, assembly workability is not impaired.
Note that the notch is easy to bend when it is provided on both the inner and outer peripheral surfaces of the laminated core at the boundary, but the core member can be bent even if the notch is formed only on the outer peripheral surface. Therefore, there is no need to have a notch on the inner peripheral surface. When the notch is formed on the inner peripheral surface, the notch is small enough not to cause the magnetic flux to be divided.

Embodiment 3 FIG.
In the following, a method for manufacturing a laminated core of a rotating electrical machine according to Embodiment 3 of the present invention will be described with reference to the drawings, with respect to differences from Embodiment 2.
The second embodiment is different from the present embodiment in the diameter expansion process of the manufacturing method of the laminated core of the rotating electrical machine.
Other parts are the same as those in the second embodiment.

Fig.10 (a) is a figure which shows the state before pressing-in a diameter-expansion member to an iron core member.
FIG. 10B is an enlarged view of the main part of FIG.
FIG.10 (c) is a figure which shows the state which the press member 10 is pressing the notch part 41c1 of an iron core member.
FIG. 10 (d) is an enlarged view of the main part of FIG. 10 (c).
First, the diameter expansion process in which the pressing member 10 presses the notch 41c1 simultaneously with the press-fitting of the diameter expanding member 7 into the guide hole will be described.
The pressing member 10 is formed such that the width in the X direction of the pressing member 10 is larger than the width in the X direction of the notch 41c1.
At the same time that the diameter-enlarging member is press-fitted into the guide hole 4a, the pressing member 10 presses both edges in the X direction of the notch 41c1 toward the inner circumference of the laminated iron core.
If it does so, the circular arc shape of the notch part 41c1 will expand in a X direction, and the guide hole 4a will also expand at the same time, and an iron core member will bend helically.
And this iron core member is laminated | stacked helically, and a laminated iron core is comprised.

As described above, according to the method for manufacturing a laminated core of a rotating electric machine according to Embodiment 3 of the present invention, the largest elongation can be generated on the outer peripheral side of the laminated core, and the angle at which the iron core member is bent is large. Even if it can be bent easily.
In addition, when the guide hole is expanded, the notch should not be cut even if a force is generated to bulge the outer periphery of the laminated core against the periphery of the guide hole on the outer peripheral side of the laminated core. Since the pressing member is arranged in the portion, the outer peripheral surface of the laminated core can be prevented from bulging outward, and the force to swell to the outer peripheral side of the laminated core is increased in the direction of bending the core member. Can be turned into power.

  It should be noted that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted.

DESCRIPTION OF SYMBOLS 1 Stator, 2 Rotor, 4,204 Iron core member, 4A Connection yoke part,
4a, 4b, 4c, 4d, 4e, 4g, 4h, 4i guide holes, 4a1, 4b1 edges,
4c1, 4c2, 4d1, 4d2 notches, 5 laminated cores, 7,207 expanded member,
8 Out-of-plane deformation prevention member, 9 Edge shaping member, 10 Press member, 21 Shaft,
22 Rotor core, 41a Yoke part, 41b Teeth part, 41c Boundary part,
41c1, 41c2 Notch, 42 periphery, 54a, 54b hole, 100 rotating electrical machine.

Claims (17)

In one strip-shaped iron core member used for manufacturing one laminated iron core of a rotating electrical machine,
The iron core member includes a plurality of yoke portions,
Each of the yoke parts comprises a tooth part protruding perpendicularly to the short direction of the iron core member,
It is configured by linearly connecting the end portions of the adjacent yoke portions,
A guide hole at each boundary portion of each yoke portion;
Each of the guide holes is an iron core member in which the width in the longitudinal direction of the iron core member is smaller than the width in the short direction of the iron core member. The at least one end of the edge of the guide hole in the short direction of the iron core member on the side that is the outer periphery of the laminated iron core forms a notch in the short direction of the iron core member. The iron core member according to 1. The iron core member has a plurality of the guide holes for each of the boundary portions,
The core member according to claim 1 or 2, wherein each of the plurality of guide holes has a width in the longitudinal direction of the core member that is increased in order from the outer periphery side of the laminated core. The core member according to any one of claims 1 to 3, wherein the core member has a notch formed on a surface of the boundary portion of each of the yoke portions that is an outer periphery of the laminated core. 5. The core member according to claim 4, wherein the iron core member has a notch formed on a surface of the boundary portion of each of the yoke portions that is an inner periphery of the laminated core. The shape of the said guide hole is formed in the shape which spreads in a fan shape toward the side used as the outer periphery of the said laminated iron core from the side used as the inner periphery of the said laminated iron core. The core member according to Item. In the manufacturing method of a laminated iron core of a rotating electrical machine that manufactures one laminated iron core of a rotating electrical machine using a single belt-shaped electromagnetic steel sheet,
From the electromagnetic steel sheet, a connecting yoke part in a state where ends of a plurality of adjacent yoke parts are linearly connected by press working, and a tooth part projecting perpendicularly from the yoke part to the short direction of the electromagnetic steel sheet A die cutting process for forming an iron core member having
A punching step of punching a guide hole in which the width in the longitudinal direction of the iron core member is smaller than the width in the short direction of the iron core member at the boundary portion of each yoke portion;
A diameter expansion process of press-fitting a diameter-expanding member into the guide hole, and bending the core member spirally by expanding the diameter of the guide hole in the longitudinal direction of the core member;
The manufacturing method of the laminated core of a rotary electric machine provided with the lamination process which laminates | stacks the said iron core member helically after the said diameter expansion process. The rotation according to claim 7, further comprising a curing step of pressing the iron core member in a laminating direction of the iron core member slidably around the guide hole by an out-of-plane deformation preventing member before the diameter expanding step. Manufacturing method of laminated core of electric machine. The manufacturing method of the laminated core of the rotary electric machine of Claim 7 or 8 provided with the shaping process which presses the edge of the said guide hole to the lamination direction of the said iron core member by the edge shaping member after the said diameter expansion process. 10. The method according to claim 7, further comprising a notch forming step of forming a notch portion on a surface that is an outer periphery of the laminated core of the boundary portion of each yoke portion before the diameter expanding step. The manufacturing method of the laminated iron core of the rotary electric machine as described in 2. In the diameter expanding step, the diameter increasing member is press-fitted into the guide hole, and at the same time, the pressing member larger than the width of the core member in the longitudinal direction of the notch portion has both edges of the notch portion of the laminated core. The manufacturing method of the laminated iron core of the rotary electric machine of Claim 10 pressed to the side used as an inner periphery. A laminated iron core of a rotating electric machine configured by laminating a belt-shaped iron core member in a spiral shape,
The iron core member has a plurality of yoke portions and a plurality of teeth portions that respectively protrude perpendicularly to the short direction of the iron core member from the yoke portions, and connect the end portions of the adjacent yoke portions. Are integrally formed,
The laminated iron core is configured by laminating the iron core members in a spiral shape,
The boundary part of each said yoke part is a lamination | stacking iron core of the rotary electric machine which each has the hole penetrated in the lamination direction of the said iron core member. At least the outer peripheral side ends of the laminated core at the both ends in the radial direction of the laminated core at the edge of the hole are cut portions extending in the radial direction of the laminated core and in the axial direction of the laminated core. The laminated iron core of the rotary electric machine according to claim 12 having each of the following. The laminated core of the rotating electrical machine according to claim 12 or 13, wherein an outer peripheral surface of the boundary portion of each of the yoke portions of the laminated core forms a groove portion extending in an axial direction of the laminated core. The shape of the said hole is formed in the shape which spreads in a fan shape toward the outer peripheral side of the said laminated iron core from the inner peripheral side of the said laminated iron core, The rotation of any one of Claims 12-14 Electric laminated iron core. The stator of the rotary electric machine provided with the laminated iron core of the rotary electric machine of any one of Claims 12-15. The rotary electric machine provided with the stator of the rotary electric machine of Claim 16.

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