JP5818414B2 - Manufacturing apparatus for stator core member - Google Patents

Description

  The present invention relates to a stator core member manufacturing apparatus for manufacturing a stator core member used in, for example, a rotating electrical machine such as a motor.

As a core member of a conventional stator, a plurality of yoke portions whose edges are connected in an annular manner via a rotatable connecting means, and projecting from the central portion in the connecting direction of each yoke portion, the stacking direction on both sides of the tip By sequentially laminating a plurality of annular magnetic members consisting of magnetic teeth formed by projecting magnetic pole portions so that the projecting lengths increase or decrease by the same length, the gaps between adjacent magnetic pole portions are stacked. The one formed so as to be skewed in the direction has been proposed.
It is known that the rotating electrical machine using the core member of the stator manufactured as described above can obtain the effect of reducing the torque ripple at the start and the cogging torque during operation.

  And as a conventional core member manufacturing apparatus, it is arranged on the upstream side in the steel plate conveyance direction, and processing such as punching other than cutting for forming a contour of a predetermined protruding length of the magnetic pole part of the annular magnetic member on the steel plate A first mold to be performed; a second mold for performing punching to form the contour of the annular magnetic member on the steel plate; and a ring disposed between the first mold and the second mold. Rotating and moving mold that rotates around the center of the magnetic member in the connecting direction of the yoke portion and cuts the steel plate to form a contour with a predetermined protruding length of the magnetic pole portion of the annular magnetic member Has been proposed (see, for example, Patent Document 1).

Japanese Patent No. 4121008

  A magnetic pole portion formed by punching a steel plate with a first die and a rotationally movable die of a conventional core member manufacturing apparatus is extended with the same width from the base end portion to the tip end portion of the magnetic teeth. Yes.

Here, in general, in a rotating electrical machine configured using a core member having a wide tip portion of the magnetic teeth, the leakage flux of the core member increases, so that the torque is reduced, and the base end of the magnetic teeth In a rotating electrical machine configured using a core member having a narrow width, magnetic saturation occurs, and cogging torque and torque ripple increase.
For this reason, in a rotating electrical machine configured using a core member manufactured by a conventional core member manufacturing apparatus, it is impossible to achieve both a reduction in cogging torque and torque ripple, and an increase in torque.

  The present invention has been made to solve the above-described problems, and is used in a stator that constitutes a rotating electric machine together with a rotor and can simultaneously reduce cogging torque and torque ripple and increase torque of the rotating electric machine. It aims at obtaining the manufacturing apparatus of the core member of a stator core.

  The present invention includes a plurality of annular magnetic members in which a plurality of plate-like divided core members formed by processing a steel plate are connected in an annular shape, and the divided core members are divided yokes arranged along the connecting direction, and divided A plurality of annular magnetic members are stacked so that a gap between adjacent teeth ribs is continuous, including a teeth base protruding from an intermediate portion of the yoke and a magnetic teeth having a teeth rib protruding from the tip of the teeth base. In the stator core member manufacturing apparatus for manufacturing the stator core member configured as described above, the stator core member is disposed corresponding to the transport path of the steel sheet transported in a predetermined direction, and constitutes an annular magnetic member for the steel sheet. A die for performing a punching process for forming a contour other than a contour of a predetermined protrusion length of the teeth collar portion of the split core member, and a contour of a predetermined protrusion length of the teeth collar portion with respect to the steel plate A movable mold for punching to form, and at least one of the mold and the movable mold is narrowed from the connecting portion of the teeth base portion and the teeth flange portion toward the tip of the teeth flange portion. It has a shape that punches a steel plate.

  By using the stator core member manufacturing apparatus according to the present invention, it becomes possible to manufacture a stator core member whose width becomes narrower from the connecting portion between the teeth base portion and the teeth flange portion toward the tip of the teeth flange portion. In the rotating electric machine having the members, both reduction of cogging torque and torque ripple and increase of torque can be realized.

It is a perspective view of the core member of the stator manufactured using the manufacturing apparatus of the core member of the stator which concerns on Embodiment 1 of this invention. It is a top view of the core member of the stator manufactured using the manufacturing apparatus of the core member of the stator which concerns on Embodiment 1 of this invention. It is the principal part front view which looked at the core member of the stator manufactured using the manufacturing apparatus of the core member of the stator which concerns on Embodiment 1 of this invention from the inner peripheral side. It is the A section enlarged view of FIG. It is a side view of the manufacturing apparatus of the core member of the stator which concerns on Embodiment 1 of this invention. It is a top view of the manufacturing apparatus of the core member of the stator which concerns on Embodiment 1 of this invention. It is principal part side sectional drawing of the 2nd press mechanism of the manufacturing apparatus of the core member of the stator which concerns on Embodiment 1 of this invention. It is a top view explaining operation | movement of the manufacturing apparatus of the core member of the stator which concerns on Embodiment 1 of this invention, and formation of the division | segmentation core member which comprises an annular magnetic member. In the stator core member manufacturing apparatus according to Embodiment 1 of the present invention, the shape of the upper mold of the rotationally moving mold for cutting out the teeth flange portion of the split core member into a contour having a predetermined protruding length will be described. FIG. It is a top view of the core member of the stator manufactured using the manufacturing apparatus of the core member of the stator which concerns on Embodiment 2 of this invention. It is a top view explaining the shape of the 1st metal mold | die of the manufacturing apparatus of the stator core member which concerns on Embodiment 2 of this invention, and has shown a mode that the 1st metal mold | die punched the predetermined site | part of the steel plate. It is a perspective view of the stator core member manufactured using the stator core member manufacturing apparatus of the invention according to Embodiment 3 of the present invention. It is a side view of the manufacturing apparatus of the core member of the stator which concerns on Embodiment 3 of this invention. It is a top view of the manufacturing apparatus of the core member of the stator which concerns on Embodiment 3 of this invention. It is principal part side sectional drawing of the 2nd press mechanism of the manufacturing apparatus of the core member of the stator which concerns on Embodiment 3 of this invention. It is a top view explaining operation | movement of the manufacturing apparatus of the core member of the stator which concerns on Embodiment 3 of this invention, and formation of the division | segmentation core member which comprises an annular magnetic member. It is a top view explaining the shape of the linear movement metal mold | die of the manufacturing apparatus of the stator core member which concerns on Embodiment 3 of this invention. It is a top view explaining the shape of the 1st metal mold | die and rotational movement metal mold | die of the manufacturing apparatus of the core member of the stator of Embodiment 4 concerning this invention, and a 1st metal mold | die and a rotational movement metal mold | die are steel plates. A state in which a predetermined part is punched is shown. It is a top view of the core member of the stator manufactured by the manufacturing apparatus of the core member of the stator of invention concerning Embodiment 5 of this invention. It is a figure explaining the shape of the rotational movement metal mold | die of the manufacturing apparatus of the stator core member which concerns on Embodiment 5 of this invention.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

Embodiment 1 FIG.
First, prior to the description of the stator core member manufacturing apparatus, the configuration of the stator core member manufactured using the stator core member manufacturing apparatus will be described.
1 is a perspective view of a stator core member manufactured using the stator core member manufacturing apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a view of the stator core member according to Embodiment 1 of the present invention. FIG. 3 is a plan view of a stator core member manufactured using the manufacturing apparatus, and FIG. 3 shows the stator core member manufactured using the stator core member manufacturing apparatus according to Embodiment 1 of the present invention from the inner peripheral side. FIG. 4 is an enlarged view of a portion A in FIG. 2.

  1 to 4, the stator core member 1A is formed by connecting, for example, a plurality of plate-like first annular magnetic members 2A and second annular magnetic members 2B made of silicon steel in the respective thickness directions. It is comprised as a laminated body.

Each of the first annular magnetic members 2A includes a plurality of divided core members 3 arranged in an annular shape. Here, the number of the split core members 3 constituting the first annular magnetic member 2A is 12, but the number of the split core members 3 is not particularly limited.
The split core member 3 protrudes in a direction orthogonal to the thickness direction of the split yoke 4 from a split yoke 4 made in a long flat plate shape and an intermediate portion between one end and the other end in the longitudinal direction of the split yoke 4. The teeth base 5a and the magnetic teeth 5 having teeth hooks 5b and 5c projecting in the direction parallel to the divided yoke (the circumferential direction of the divided yoke 4) on both sides of the tip of the teeth base 5a.

  The main part on the other side opposite to one side of the split yoke 4 from which the teeth base 5a is projected is formed in an arc shape having a predetermined radius of curvature. Further, in the vicinity of one end of the divided yoke 4, a connecting portion 4 a is formed in which one surface side is a convex portion and the other surface side is a concave portion.

As shown in FIG. 4, the teeth flange portions 5b and 5c are formed such that the width Wb of the distal end is narrower than the width Wa on the base end portion side connected to the teeth base portion 5a, and the tooth flange portions 5b and 5c. The width is narrower from the base end toward the tip. In addition, the width | variety of the teeth collar parts 5b and 5c is formed in the same width | variety here from the base end part of the teeth collar parts 5b and 5c to the site | part near the front-end | tip.
The first annular magnetic member 2 </ b> A is configured by arranging a plurality of divided core members 3 so that the divided yokes 4 are arranged in a ring shape and the tooth base 5 a is disposed inside the divided yoke 4. That is, in the first annular magnetic member 2 </ b> A, the divided yoke 4 is connected along the connecting direction of the divided core member 3, and the tooth base portion 5 a extends from the intermediate portion of each divided yoke 4 with respect to the connecting direction of the divided yoke 4. 4 is projected inside.

  Each of the second annular magnetic members 2B is composed of a plurality of divided core members 3 arranged in an annular shape, like the first annular magnetic member 2A. The split core member 3 of the second annular magnetic member 2B is divided from the first annular magnetic member 2A except that the connecting portion 4a is formed near the other end opposite to one end of the split yoke 4 in the longitudinal direction. The same as the core member 3 is configured.

  Each of the first and second annular magnetic members 2A, 2B has a plurality of divided core members 3 arranged in an annular shape so that one end and the other end of the divided yoke 4 of the adjacent divided core member 3 are arranged next to each other. It is configured. At this time, the outer shapes of the first and second annular magnetic members 2A and 2B are circles having a radius of curvature equal to the radius of curvature of the other side of the divided yoke 4 formed in an arc shape.

  As described above, the stator core member 1A is formed by alternately stacking the first and second annular magnetic members 2A and 2B with the coupling portions 4a being fitted to each other so that the teeth base portions 5a overlap each other. Configured as a body. Each split core member 3 is formed with an end portion of the split yoke 4 so as to be rotatable around the connecting portion 4a.

At this time, the protrusion lengths of the tooth flange portions 5b and 5c from the tip of the teeth base portion 5a to one side and the other side in the width direction of the teeth base portion 5a are different for each layer. The protruding lengths of the tooth ring portions 5b and 5c of the second annular magnetic members 2A and 2B from the teeth base portion 5a are set so as to satisfy the following conditions.
That is, the protruding lengths of the teeth flanges 5b and 5c from the teeth base 5a of the magnetic teeth 5 are the first and second annular magnetic members 2A and 2B in the first and second directions in the stacking direction. Each time the layer of the second annular magnetic member is changed, the number is sequentially increased and decreased so that a gap formed between the tips of the adjacent teeth flange portions 5b and 5c continues from one end to the other end of the core member 1A of the stator. Is set.

  Further, in the stator core member 1A configured as described above, the slot 7 has the tooth base portion 5a of the adjacent magnetic pole tooth 5, and the tooth flange portions 5b and 5c extending from the tooth base portion 5a in a direction opposite to each other. , And a space surrounded by a portion of the split yoke 4 located between adjacent tooth bases 5a. And the slot opening 7a comprised by the clearance gap between adjacent teeth ridge part 5b, 5c is a lamination direction toward the other side from one side of the lamination direction of 1st and 2nd annular magnetic member 2A, 2B. Is skewed.

Next, an apparatus for manufacturing the core member of the stator will be described.
5 is a side view of the stator core member manufacturing apparatus according to Embodiment 1 of the present invention, FIG. 6 is a plan view of the stator core member manufacturing apparatus according to Embodiment 1 of the present invention, and FIG. It is principal part side sectional drawing of the 2nd press mechanism of the manufacturing apparatus of the core member of the stator which concerns on Embodiment 1 of invention.

5 and 6, the stator core member manufacturing apparatus 10A includes a first press mechanism 11A and a second press mechanism 11B as a moving mold mechanism.
The first press mechanism 11A has an upper base plate 17 and a lower base plate 18 that are arranged relative to each other in a vertical direction, and a long steel plate 19 made of silicon steel between the upper base plate 17 and the lower base plate 18 in a predetermined direction (FIG. 5). A transport mechanism (not shown) for transporting in the direction of the arrow in the middle, and an upper mold 13A and a lower mold 13B which are arranged on the upstream side in the transport direction of the steel plate 19 and are installed on the upper base plate 17 and the lower base plate 18. The first mold 12A for punching or caulking a predetermined portion of the steel plate 19, and the first mold 12A on the downstream side in the conveying direction of the steel plate 19 with a predetermined gap, and the upper base plate 17 and A second mold 14A that includes an upper mold 15A and a lower mold 15B installed on the lower base plate 18 and punches a predetermined portion of the steel plate 19 is provided.

  Further, as shown in FIG. 7, the second press mechanism 11 </ b> B has the axial direction orthogonal to both the front and back surfaces of the steel plate 19 conveyed on the lower base plate 18, at a position corresponding to the central portion in the width direction of the steel plate 19. The thrust bearing 21 disposed on the lower base plate 18 is supported by the thrust bearing 21 and is disposed so as to be able to rotate around the axial center of the thrust bearing 21. The linear motor 24 that generates torque to rotate around the axis of the shaft 21 and the rotary moving base 22 are driven by the servo motor 26 via the lower die 28B and the crankshaft 25 to pressurize the lower die 28B. A rotary moving mold 28 as a moving mold composed of an upper mold 28A arranged at a possible position and configured to punch a pressed steel plate 19 between the lower mold 28B into a desired shape. Have

Next, an operation of the stator core member manufacturing apparatus 10A configured as described above will be described.
FIG. 8 is a plan view for explaining the operation of the stator core member manufacturing apparatus according to Embodiment 1 of the present invention and the process of forming the split core member constituting the annular magnetic member.

  In the first embodiment, the formation regions of the plurality of divided core members 3 for constituting the first and second annular magnetic members 2A and 2B are set so as to be arranged at a predetermined pitch in the circumferential direction. The stator core member manufacturing apparatus 10 </ b> A is obtained by punching the steel plate 19 so as to leave the formation regions of the plurality of divided core members 3 set on the steel plate 19 with respect to the obtained steel plate 19. Composed. In FIG. 8, for convenience of explanation, the number of the divided core members 3 for constituting each of the first and second annular magnetic members 2A and 2B is illustrated as eight. As in the case of twelve.

  First, when the upper base plate 17 is lowered by a driving source (not shown), as shown in FIG. 8, the pilot hole 31 is formed on the steel plate 19 at the position indicated by the arrow A in FIG. The formation of the circular punching 32 for arranging the rotor (not shown) at the position indicated by the arrow B, and the punching 33 for forming the respective contours of the divided yoke 4 and the magnetic pole teeth 5 at the position indicated by the arrow C are performed. , 34 are formed.

Further, at the positions indicated by arrows D and E, cuts 35 and 36 for forming the contours of the end faces of the divided yokes 4 of the first and second annular magnetic members 2A and 2B, respectively, At the position indicated by G, the concave and convex connecting portions 4a formed on the first and second annular magnetic members 2A and 2B, respectively, and the caulking 38 and 39 are respectively performed. At the position indicated by the arrow I, The second mold 14A performs punching 40 for forming the contours of the divided core members constituting the first and second annular magnetic members 2A and 2B.
As described above, the contours of the predetermined protrusion lengths of the teeth flange portions 5b and 5c of the divided core member 3 constituting the first and second annular magnetic members 2A and 2B by the first and second molds 12A and 14A. A punching process other than punching for forming a contour other than the above is performed.

  It should be noted that any one of the punching processes at the positions of the arrows D and E can be selectively performed. Similarly, any one of the caulking processes by pressing at the positions indicated by the arrows F and G can be selectively performed. That is, the portion of the steel plate 19 punched at the position of arrow D is moved to arrow H without being stamped at arrow E, at the position of arrow F, and without being crimped at the position of arrow G. Can be made. Further, the steel plate 19 is punched at the position of the arrow D without being punched at the position of the arrow D, and then is crimped at the position of the arrow G without being crimped at the position of the arrow F, until the arrow H. The steel plate 19 can be moved.

  Similarly to the connecting portion 4a, the staking 38, 39 is used to form a concavo-convex portion at a predetermined portion of the steel plate 19, and is arranged vertically when the first and second annular magnetic members 2A, 2B are laminated. The crimps 38 and 39 formed on the split core member 3 of the first and second annular magnetic members 2A and 2B are fitted together.

  Then, in synchronization with the operation of the first and second molds 12A and 14A, the servo motor 26 of the second press mechanism 11B is driven and the upper mold 28A is lowered via the crankshaft 25, whereby the arrow in FIG. At a position indicated by H, a cutout 41 is formed for forming an outline of a predetermined protruding length of the teeth flange portions 5b, 5c of the split core member 3 constituting the first and second annular magnetic members 2A, 2B.

At this time, the shape of the rotary moving die 28 for punching the steel plate 19 with a predetermined shape 41 will be described.
FIG. 9 illustrates the shape of the rotationally moving mold for punching out the teeth flange portion of the split core member into a contour having a predetermined protruding length in the stator core member manufacturing apparatus according to Embodiment 1 of the present invention. FIG.
The pressing of the steel sheet by the rotary moving mold 28 is performed prior to the pressing of the steel sheet 19 by the second mold 14A. In FIG. 9, the pressing by the second mold is performed for convenience of explanation. The shape of the subsequent first annular magnetic member 2A is illustrated.

  In the rotary moving mold 28, the upper mold 28A is configured to punch out the teeth flange portions 5b and 5c of the split core member 3 with a predetermined protruding length and a predetermined end on the tip side. In the cross section perpendicular to the pressing direction of the steel plate 19 of the upper die 28A, as shown in FIG. 9, each of the upper die 28A has the same width as the upper base of the trapezoidal portion 29a and the trapezoidal portion 29a. And a plurality of punched portions 29 including rectangular portions 29b extending on the opposite side. The plurality of punched portions 29 are the same number as the number of the split core members 3 constituting each of the annular magnetic members 2A and 2B to be formed at predetermined intervals in the circumferential direction around the axial center (rotating shaft) of the thrust bearing 21. Arranged. Further, the distance between the axial center of the thrust bearing 21 and the punched portion 29 corresponds to the distance between the axial center of the core member 1A of the stator to be manufactured and the teeth flange portions 5b and 5c.

  The rotary moving mold 28 is configured to rotate in conjunction with the rotation of the rotary moving table 22 driven by the linear motor 24. That is, the punching portion 29 is rotated around the axial center of the thrust bearing 21 in conjunction with the driving of the linear motor 24. Further, the rotational movement mold 28 is installed with the axial center of the thrust bearing 21 orthogonal to the steel sheet 19, and the conveyance path of the steel sheet 19 is formed by punching the formation area of the plurality of divided core members 3 by the rotational movement mold 28. The center of the formation region of the split core member 3 is set so as to intersect with the axial center of the thrust bearing 21 orthogonal to the steel plate 19 when moved to the position (indicated by the arrow H).

  Further, when the formation region of the plurality of divided core members 3 is moved to the position indicated by the arrow H, the bottom bottom side of the trapezoidal portion 29a of each punched portion 29 is the punched 37 side when viewed from the punching direction by the upper die 28A. The rectangular portion 29b is located inside the punching 32. At this time, a part of the rectangular portion 29b on the trapezoidal portion 29a side is arranged at a position that approaches the portion of the steel plate 19 that separates the punching 37 and the punching 32. Further, the shapes of the trapezoidal portion 29a and the rectangular portion 29b are set so that the interval La on the outer peripheral side of the adjacent teeth flange portions 5b, 5c formed after punching is larger than the interval Lb on the inner peripheral side.

  Then, the punching process of the steel plate 19 by the rotary moving mold 28 separates the tips of the forming regions of the adjacent teeth flange portions 5b and 5c, and the shape of the teeth flange portions 5b and 5c on the tip side is the tip. One of the annular magnetic members 2 </ b> A that becomes narrower toward is formed.

  The rotational movement table 22 is provided with a thrust bearing 21 arranged orthogonally to the steel plate 19 by driving the linear motor 24 in accordance with an increase or decrease in the protruding length of the tooth flanges 5b, 5c of the annular magnetic members 2A, 2B of each layer. Each time the annular magnetic members 2A and 2B are formed by sequentially rotating around the axis by a predetermined amount, the tip of the teeth base 5a of the split core member 3 is moved to one side and the other side of the teeth base 5a. The protrusion lengths of the teeth flanges 5b and 5c are increased or decreased by the same length. Thereby, the other first annular magnetic member 2A and the second annular magnetic member 2B are manufactured.

  The first and second annular magnetic members 2A and 2B are fixed and integrated by the stacked caulking 38 and 39, and as shown in FIGS. 1 and 3, a gap is formed between the adjacent teeth flange portions 5b and 5c. The configured slot opening 7a is skewed with respect to the stacking direction of the first and second annular magnetic members 2A and 2B, and the tips of the teeth flange portions 5b and 5c are portions on the side of the connecting portion with the teeth base portion 5a. A narrower stator core member 1A is completed.

  According to the stator core member manufacturing apparatus 10A of the first embodiment, the rotational movement mold 28 is moved from the connecting portion of the teeth base portion 5a and the teeth flange portions 5b, 5c toward the tips of the teeth flange portions 5b, 5c. The steel plate 19 is punched so that the width is narrow.

  More specifically, the formation positions in the steel plate 19 of the plurality of divided core members 3 constituting the first and second annular magnetic members 2A and 2B are set so as to be arranged at a predetermined pitch in the circumferential direction. Then, the rotational movement mold 28 rotates the punched portion 29 for the steel plate 19 around an axis (rotation axis) perpendicular to the steel plate 19, and the center of the formation region of the plurality of divided core members 3 is the rotation axis. The steel plate 19 is installed so that it can be punched out at a position where it intersects the heart. And the punching part 29 of the steel plate 19 in the rotationally moving mold 28 has the steel plate 19 narrowed so that the width becomes narrower from the connecting part of the teeth base 5a and the teeth flanges 5b, 5c toward the tips of the teeth flanges 5b, 5c. It has a shape to be punched.

Each of the plurality of divided core members 3 manufactured by the stator core member manufacturing apparatus 10A can change the protruding length of the teeth flange portions 5b and 5c from the teeth base portion 5a.
Then, in the core member 1A of the stator configured by laminating the first and second annular magnetic members 2A and 2B each configured by annularly connecting the divided core members 3 so that the slot opening 7a is skewed. The width of the teeth flanges 5b, 5c becomes narrower from the connecting portion of the teeth base 5a and the teeth flanges 5b, 5c toward the tips of the teeth flanges 5b, 5c. Therefore, in the rotating electric machine having the stator core member 1A manufactured using the stator core member manufacturing apparatus 10A, both reduction of cogging torque and torque ripple and increase of torque can be realized.

Embodiment 2. FIG.
First, prior to the description of the stator core member manufacturing apparatus of the invention according to the second embodiment, in the stator core member manufacturing apparatus, the first gold for forming the respective contours of the split yoke portion and the magnetic pole teeth. It is a figure explaining the shape of a type | mold.

  FIG. 10 is a plan view of a stator core member manufactured using the stator core member manufacturing apparatus according to Embodiment 2 of the present invention, and FIG. 11 is a view of the stator core member according to Embodiment 2 of the present invention. It is a top view explaining the shape of the 1st metal mold | die of a manufacturing apparatus, and has shown a mode that the predetermined site | part of the steel plate is punched out.

In FIG. 10, in the stator core member 1 </ b> B, in the magnetic pole tooth 5, the connecting portion between the teeth base portion 5 a and the teeth flange portions 5 b and 5 c is wider than the intermediate portion between the teeth flange portions 5 b and 5 c.
The other stator core member 1B has the same configuration as the stator core member 1A.

The stator core member manufacturing apparatus according to the second embodiment is configured in the same manner as the stator core member manufacturing apparatus 10A.
The stator core member 1B is manufactured in substantially the same manner as the stator core member 1A.

However, at the position indicated by the arrow C in FIG. 8, in the step of punching 34 for forming the contours of the divided yoke 4 and the magnetic teeth 5, the portion of the upper die 13 </ b> A that punches the steel plate 19 of the first die 12 </ b> A. The cross-sectional shape is set so that the connecting portion between the teeth base 5a and the teeth flanges 5b, 5c is wider than the portion extending from the middle portion of the teeth flanges 5b, 5c to the tip.
That is, as shown in FIG. 11, the cross-sectional shape of the upper die 13A of the first mold 12A for punching the steel plate 19 is such that the portion punched closer to the connecting portion between the teeth base 5a and the teeth flanges 5b and 5c. The width is gradually narrowed.

According to the stator core member manufacturing apparatus of the second embodiment, the first mold 12A for punching the steel plate 19 in the step of performing the punching 33, 34 for forming the contours of the divided yoke 4 and the magnetic teeth 5 is performed. The cross-sectional shape of the portion of the upper mold 13A is compared to the portion where the connecting portion between the teeth base 5a and the teeth flanges 5b and 5c obtained after punching the steel plate 19 extends from the middle portion of the teeth flanges 5b and 5c to the tip. And wide.
Thereby, the width | variety of the site | part of the magnetic pole teeth 5 which goes to the front-end | tip of the teeth collar parts 5b and 5c from the front end side of the teeth base 5a becomes narrow.

That is, as in the first embodiment, the portion of the magnetic teeth 5 extending from the connecting portion of the teeth base 5a and the teeth flanges 5b and 5c to the tips of the teeth flanges 5b and 5c faces the tips of the teeth flanges 5b and 5c. The first mold 12A can be used so that the width is narrow.
Therefore, in the rotating electric machine having the stator core member 1B manufactured using the core member manufacturing apparatus of the second embodiment, both reduction of cogging torque and torque ripple and increase of torque can be realized.

  In the second embodiment, the description has been given on the assumption that the distal end side of the teeth flange portions 5b, 5c is formed to be narrower toward the distal end by the rotary moving mold 28. However, the teeth flange portions 5b, 5c The width on the tip side may be the same width.

Embodiment 3 FIG.
First, prior to the description of the stator core member manufacturing apparatus according to the third embodiment, the configuration of the stator core member manufactured using the stator core member manufacturing apparatus will be described.

  FIG. 12 is a perspective view of a stator core member manufactured using the stator core member manufacturing apparatus according to the third embodiment of the present invention.

  In FIG. 12, the stator core member 1C manufactured using the stator core member manufacturing apparatus has the same configuration as that described in the specification of Japanese Patent No. 3933890. The stator 3 is constructed in the same manner as the core member 1A of the stator except that the end portions of the divided yokes of the member 3 are integrally connected by refraction so that they can be bent. ing.

  13 is a side view of a stator core member manufacturing apparatus according to Embodiment 3 of the present invention, FIG. 14 is a plan view of a stator core member manufacturing apparatus according to Embodiment 3 of the present invention, and FIG. It is principal part sectional drawing of the 2nd press mechanism of the manufacturing apparatus of the core member of the stator which concerns on Embodiment 3 of invention.

  13 and 14, the stator core member manufacturing apparatus 10 </ b> B includes a third press mechanism 11 </ b> C and a fourth press mechanism 11 </ b> D as a moving mold mechanism.

  The third press mechanism 11 </ b> C includes an upper base plate 17 and a lower base plate 18, a transport mechanism (not shown) for transporting the steel plate 19 in a predetermined direction between the upper base plate 17 and the lower base plate 18, and the transport direction of the steel plate 19. A third mold 12B, which is arranged on the upstream side and is provided on the upper base plate 17 and the lower base plate 18 and made up of an upper mold 13C and a lower mold 13D, and a third mold 12B on the downstream side in the conveying direction of the steel plate 19, and a predetermined mold There is provided a fourth mold 14B composed of an upper die 15C and a lower die 15D which are arranged at intervals and are installed on the upper base plate 17 and the lower base plate 18.

  As shown in FIG. 15, the fourth press mechanism 11 </ b> D includes a moving table 40 movably disposed on the lower base plate 18 so as to cross the conveying direction of the steel plate 19, and between the moving base 40 and the lower base plate 18. A linear motor 42 having a stator 41a and a movable element 41b fixed to be opposed to the lower base plate 18 side and the movable base 40 side, and a lower mold 44B and a crankshaft 25 arranged on the movable base 40. And a linear moving mold 43 as a moving mold composed of an upper mold 44 </ b> A driven by a servo motor 26.

Next, the operation of the stator core member manufacturing apparatus 10B configured as described above will be described.
FIG. 16: is a top view explaining the operation | movement of the manufacturing apparatus of the core member of the stator which concerns on Embodiment 3 of this invention, and the process of forming the division | segmentation core member which comprises an annular magnetic member.

  In the third embodiment, the stator core member manufacturing apparatus 10B has a plurality of divided core member 3 forming regions in the width direction for constituting the first and second annular magnetic members 2A and 2B. A plurality of divided core members 3 are obtained by punching the steel plates 19 set to be arranged at predetermined intervals. In addition, the steel plate 19 is conveyed in a direction parallel to the longitudinal direction. Further, in FIG. 16, for convenience of explanation, the number of the divided core members 3 for constituting each of the first and second annular magnetic members 2A and 2B is shown as six, but actually, FIG. As in the case of twelve.

  Moreover, in the formation area of the some split core member 3 in the steel plate 19, the adjacent split core member 3 comprises the connection part which the one end or other end of the split yoke connected mutually, and the core member of a stator is mentioned later. When the divided core member 3 is obtained by punching the steel plate 19 by the manufacturing apparatus 10B, the adjacent divided core members 3 are connected to bendable.

  First, when the upper base plate 17 is lowered by a driving source (not shown), the pilot hole 52 is formed on the steel plate 19 at the position indicated by the arrow A in FIG. However, V-shaped holes 56 for forming the outlines of the connecting portions of the adjacent split core members 3 are formed at the positions indicated by the arrows C, respectively, and at the positions indicated by the arrows E by the fourth mold 14B. The punching 58 for forming each contour of the divided core member 3 continuous in the width direction of the steel plate 19 is performed.

  As described above, the contours of the predetermined protruding lengths of the teeth flange portions 5b and 5c of the divided core member 3 constituting the first and second annular magnetic members 2A and 2B are formed by the third and fourth molds 12B and 14B. A punching process for forming a contour other than the above is performed.

  Further, in synchronization with the operation of the third and fourth molds 12B and 14B, the servomotor 26 of the fourth press mechanism 11D is driven and the upper mold 44A is lowered via the crankshaft 25, whereby the arrow in FIG. In the position indicated by D, a through hole 59 is formed for forming a contour of a predetermined protruding length of the teeth flange portions 5b, 5c of the magnetic pole teeth 5 of the split core member 3.

The shape of the linearly moving mold 43 for forming the punched hole 59 having a predetermined shape in the steel plate 19 will be described.
FIG. 17 is a plan view for explaining the shape of the linearly moving mold of the stator core member manufacturing apparatus according to Embodiment 3 of the present invention.
The press working of the steel plate 19 by the linearly moving die 43 is performed prior to the press working of the steel plate by the second die 14B, but in FIG. 17, for the convenience of explanation, the punching by the second die 14B is performed. The shape of the steel plate 19 is shown.

  In FIG. 17, the upper mold 44A for cutting out the teeth flange portions 5b, 5c of the split core member 3 into the contours of a predetermined protruding length is respectively formed on the upper bottom side of the first and second trapezoidal portions 45a, 45b. It has a plurality of punched portions 45 that are connected to each other. The plurality of punched portions 45 are arranged in a predetermined linear direction.

  When the steel plate 19 is transported to the position where the steel plate 19 is punched by the linear moving mold 43 (position indicated by the arrow X), the linearly moving mold 43 configured as described above is arranged so that the arrangement direction of the punched portions 45 is set to each annular magnetic. The members 2A and 2B are installed so as to coincide with the arrangement direction of the formation regions of the plurality of divided core members 3 for constituting the members 2A and 2B. In addition, the linear moving mold 43 is configured to move in the arrangement direction of the formation regions of the plurality of divided core members 3 in conjunction with the driving of the linear motor 42. That is, the punching portion 45 is moved in the arrangement direction of the formation regions of the plurality of divided core members 3 in conjunction with the driving of the linear motor 42.

  And the upper mold | type 44A is arrange | positioned so that the connection part of the 1st and 2nd trapezoid part 45a, 45b of each punching part 45 can punch the site | part of the steel plate 19 including between adjacent teeth ridge parts 5b, 5c. ing. At this time, the lower bottom side of one trapezoidal portion 45a is arranged on the outer peripheral side of the teeth flange portions 5b, 5c from the region where the teeth flange portions 5b, 5c are formed, and the lower bottom side of the other trapezoidal portion 45b is the teeth flange portions 5b, 5c. It is arranged on the inner peripheral side from the formation region.

  And the shape of the 1st and 2nd trapezoid part 45a, 45b is set so that the space | interval Lc of the outer peripheral side of the teeth collar part 5b, 5c may become larger than the space | interval Ld of an inner peripheral side. Thus, in the split core member 3 formed by punching the steel plate 19 with the linearly moving mold 43, the distal ends of the teeth flange portions 5b and 5c have a shape that gradually becomes narrower toward the distal end.

  Then, by pressing the steel plate 19 with the linearly moving mold 43, as shown at the position of the arrow F in FIG. 16, the teeth shape of the teeth flange portions 5b, 5c becomes narrower toward the tip. A split core member 3 having portions 5b and 5c is formed.

  When the movable base 40 forms the divided core members 3 of the first and second annular magnetic members 2A and 2B arranged in each layer, the divided cores of the first and second annular magnetic members 2A and 2B of each layer are formed. The teeth are moved from the front end side of the teeth base portion 5a of the divided core member 3 by sequentially moving in the arrangement direction of the formation region of the divided core member 3 in accordance with the increase or decrease of the protruding length of the teeth flange portions 5b and 5c of the member 3. The protruding lengths of the teeth flanges 5b and 5c to the one side and the other side of the base 5a are increased or decreased by the same length.

The plurality of divided core members 3 obtained in the connected state are formed into the first annular magnetic member 2A or the second annular magnetic member 2B by bending the connecting portion into an annular shape.
The first and second annular magnetic members 2A, 2B are laminated and fixedly integrated by a crimping caulking 33, and as shown in FIG. 12, a slot is formed by a gap between adjacent teeth flanges 5b, 5c. A stator in which the opening 7a is skewed with respect to the stacking direction of the first and second annular magnetic members 2A and 2B, and the tips of the teeth flange portions 5b and 5c are narrower than the portion on the connection portion side with the teeth base portion 5a. The core member 1C is completed.

According to the stator core member manufacturing apparatus 10B of the third embodiment, the linearly moving mold 43 moves from the connecting portion of the teeth base portion 5a and the teeth flange portions 5b and 5c toward the tips of the teeth flange portions 5b and 5c. The steel plate 19 is punched so that the width is narrow.
More specifically, areas in the steel plate 19 for forming the plurality of divided core members 3 constituting the first and second annular magnetic members 2A and 2B are arranged at predetermined intervals in a predetermined linear direction, The moving mold 43 is installed so that the steel plate 19 can be punched by moving the punching portion 45 for the steel plate 19 in a predetermined linear direction.

  Therefore, the plurality of split core members 3 manufactured by the stator core member manufacturing apparatus 10B can change the protruding lengths of the tooth flange portions 5b and 5c from the tooth base portion 5a each time the stator core member 3 is manufactured. In the stator core member 1A configured by laminating the first and second annular magnetic members 2A and 2B, each of which is formed by annularly connecting the divided core members 3 so that the slot opening 7a is skewed. The width becomes narrower from the connecting portion between the teeth base portion 5a and the teeth flange portions 5b, 5c toward the tips of the teeth flange portions 5b, 5c. Therefore, the rotating electrical machine having the stator core member 1C manufactured using the core member manufacturing apparatus 10B can realize both reduction of cogging torque and torque ripple, and increase of torque.

Embodiment 4 FIG.
The stator core member manufactured using the stator core member manufacturing apparatus according to the fourth embodiment is the same as that of the first embodiment.

Next, the configuration of the first mold of the stator core member manufacturing apparatus will be described.
FIG. 18 is a plan view for explaining the shapes of the first die and the rotationally movable die of the stator core member manufacturing apparatus according to the fourth embodiment of the present invention. Shows a state of punching a predetermined portion of the steel plate.

As shown in FIG. 18, in the formation region of the plurality of divided core members 3 for constituting each of the first and second annular magnetic members 2A, 2B, the end of the divided yoke 4 of the adjacent divided core member 3 The parts are separated.
Then, the shape of the upper mold 13C of the third mold 12B for punching the steel plate 19 at the arrow C in FIG. 16 is as shown in FIG. 18 in the region where the adjacent divided core members 3 of the steel plate 19 are to be formed. The end portions of the divided yoke 4 are set to be separated.

  Although not shown in detail, a caulking process for forming the connecting portion 4a at a place where the steel plate 19 is disposed at a predetermined position is also performed by pressing with the third mold 12B.

Thereafter, punching is performed by the linearly moving mold 43 to form the contours of the predetermined protrusion lengths of the teeth flange portions 5b and 5c, and the divided cores constituting the first and second annular magnetic members 2A and 2B are formed. The member 3 is obtained.
Hereinafter, similarly to the first embodiment, the split core member 3 is annularly arranged to be the first and second annular magnetic members 2A and 2B, and the first and second annular magnetic members 2A and 2B are the same as in the first embodiment. 1A of the stator can be obtained.

  According to the stator core member manufacturing apparatus of the fourth embodiment, as in the third embodiment, the split core member 3 is moved from the connecting portion between the tooth base portion 5a and the tooth flange portions 5b, 5c to the tooth flange portions 5b, 5c. Therefore, the rotating electrical machine having the stator core member 1A manufactured using the stator core member manufacturing apparatus 10B reduces the cogging torque and torque ripple, and increases the torque. Both can be realized.

Embodiment 5 FIG.
First, prior to the description of the stator core member manufacturing apparatus according to the fifth embodiment, the configuration of the stator core member manufactured using the stator core member manufacturing apparatus will be described.
FIG. 19 is a plan view of a stator core member manufactured by the stator core member manufacturing apparatus according to Embodiment 5 of the present invention.

  In FIG. 19, the stator core member 1 </ b> D has substantially the same configuration as the stator core member 1 </ b> A. For example, in the split core member 3 constituting the first annular magnetic member disposed at the end in the stacking direction, One side or the other side of the width direction on the distal end side of the teeth base 5a is deleted, and the protrusions of the teeth hooks 5b and 5c are omitted on the side where the teeth base 5a is cut.

  In the stator core member 1D, one end in the extending direction of the slot opening 7a is one of the tooth bases 5a among the adjacent tooth bases 5a of the first annular magnetic member 2A constituting one end in the stacking direction. The other end of the slot opening 7a is connected to the other tooth base 5a among the adjacent tooth bases 5a of the first or second annular magnetic members 2A and 2B constituting one end in the stacking direction. Open to enter.

Next, an apparatus for manufacturing the core member of the stator will be described.
FIG. 20 is a view for explaining the shape of the rotationally moving mold of the stator core member manufacturing apparatus according to Embodiment 5 of the present invention.

The stator core member manufacturing apparatus of this embodiment is configured in the same manner as the stator core member manufacturing apparatus 10B.
However, a rotationally moving mold 28 is formed which performs punching processing to form a contour of a predetermined protruding length of the teeth flange portions 5b and 5c among the formation regions of the plurality of divided core members 3 set on the steel plate 19. As shown in FIG. 20, the punching portion 29 of the upper die 28A can move to the circumferential position corresponding to the circumferential position at the proximal end portion of the teeth base portion 5a to punch the steel plate 19. It is configured.

According to the stator core member manufacturing apparatus of the fifth embodiment, for example, one end of the slot opening 7a enters one of the adjacent tooth bases 5a, and the other end of the slot opening 7a is adjacent to the adjacent tooth base 5a. The core member 1D of the stator can be manufactured so as to enter the other of them.
As a result, the slot opening 7a can be greatly skewed with respect to the stacking direction of the first and second annular magnetic members 2A and 2B, and the cogging torque and torque ripple reducing effect and the torque increasing effect can be further increased. Can be obtained.

  In each of the above-described embodiments, the shapes of the punched portions 29 and 45 of the upper molds 28A and 44A for performing the punching process for forming the contours of the predetermined protruding lengths of the teeth flange portions 5b and 5c are the trapezoidal portion 29a. The rectangular portion 29b or the first and second trapezoidal portions 45a and 45b have been described as being combined, but the shape of the punched portions 29 and 45 is not limited to this. The shape of the punched portions 29 and 45 only needs to have a shape in which the steel plate 19 is punched so that the distal end side is narrower than the proximal end portion side of the teeth flange portion 5b.

  In each of the above embodiments, the linear motor 24 or the linear motor 42 is used as a drive source for moving the rotational movement mold 28 or the linear movement mold 43, but the rotational movement mold 28 or the linear movement is used. Another drive source may be used as a drive source for moving the mold 43.

  1A to 1D Stator core member, 2A, 2B annular magnetic member, 3 split core member, 4 split yoke, 5 magnetic teeth, 5a teeth base, 5b, 5c teeth flange, 10A, 10B Stator core member manufacturing apparatus, 12A, 12B mold, 14A, 14B mold, 19 steel plate, 28 rotary moving mold (moving mold), 29 punching part, 43 linear moving mold (moving mold), 45 punching part.

Claims (5)

A plurality of annular magnetic members, each of which is formed by processing a steel plate and annularly connecting a plurality of plate-like divided core members, wherein the divided core members are arranged along a connecting direction; A plurality of ring-shaped annular teeth so that gaps between adjacent teeth ribs are connected to each other, with a teeth base protruding from an intermediate portion in the connecting direction and a magnetic teeth having a teeth rib protruding from the tip of the teeth base; A stator core member manufacturing apparatus for manufacturing a stator core member configured by laminating magnetic members,
A contour other than the contour of the predetermined protrusion length of the teeth flange portion of the split core member that is arranged corresponding to the transport path of the steel plate that is transported in a predetermined direction and that constitutes the annular magnetic member. A slot opening formed by connecting the gap between adjacent teeth flanges to the die for performing punching for forming and the steel plate is skewed with respect to the laminating direction of the annular magnetic member. And a moving mold for performing punching processing to form a contour with a predetermined protruding length of the teeth collar by sequentially moving a predetermined amount to
While at least one of the teeth collars adjacent through the gap, the width of the teeth collar is the same from the base end of the teeth collar to the vicinity of the tip of the teeth collar , Punching the steel plate with the mold and the moving mold so that the width is narrowed from the vicinity of the tip toward the tip of the teeth flange,
The mold has a shape for punching the steel plate so as to form a contour from a base end portion of the teeth collar portion to a portion in the vicinity of the tip of the teeth collar portion, and the moving mold is formed by the tip An apparatus for manufacturing a stator core member, characterized by having a shape in which the steel sheet is punched so as to form a contour from a nearby portion to a tip of a teeth collar. A plurality of annular magnetic members, each of which is formed by processing a steel plate and annularly connecting a plurality of plate-like divided core members, wherein the divided core members are arranged along a connecting direction; A plurality of ring-shaped annular teeth so that gaps between adjacent teeth ribs are connected to each other, with a teeth base protruding from an intermediate portion in the connecting direction and a magnetic teeth having a teeth rib protruding from the tip of the teeth base; A stator core member manufacturing apparatus for manufacturing a stator core member configured by laminating magnetic members,
A contour other than the contour of the predetermined protrusion length of the teeth flange portion of the split core member that is arranged corresponding to the transport path of the steel plate that is transported in a predetermined direction and that constitutes the annular magnetic member. A slot opening formed by connecting the gap between adjacent teeth flanges to the die for performing punching for forming and the steel plate is skewed with respect to the laminating direction of the annular magnetic member. And a moving mold for performing punching processing to form a contour with a predetermined protruding length of the teeth collar by sequentially moving a predetermined amount to
At least one of the teeth flanges adjacent via the gap has a width of an intermediate portion that protrudes from a connection portion of the teeth flange with the tip of the teeth base and extends to a portion near the tip of the teeth flange. The mold and the movable metal mold have the same width, the width of the connecting portion is wider than the width of the intermediate portion, and the width becomes narrower from a portion near the tip toward the tip of the teeth collar. Punching the steel sheet with a mold,
The mold has a shape in which the steel plate is punched so as to form the contour of the connecting portion and the contour of the intermediate portion, and the movable mold is from the vicinity of the tip to the tip of the teeth hook portion. An apparatus for manufacturing a core member of a stator, characterized by having a shape in which the steel sheet is punched so as to form an outline of the stator. The formation region in the steel plate of the plurality of divided core members constituting each annular magnetic member is set to be arranged at a predetermined pitch in the circumferential direction,
The moving mold rotates the punched portion with respect to the steel plate around an axis perpendicular to the steel plate, and the steel plate is moved at a position where the centers of the formation regions of the plurality of divided core members coincide with the axis. 3. The stator core member manufacturing apparatus according to claim 1, wherein the stator core member manufacturing apparatus is installed so as to be punched out. The formation regions in the steel plates of the plurality of divided core members constituting each annular magnetic member are arranged at predetermined intervals in a predetermined linear direction,
3. The stator according to claim 1, wherein the moving mold is installed such that a punching portion for the steel plate is moved in the predetermined linear direction so as to punch the steel plate. The core member manufacturing apparatus.   The moving mold can move to a position where it enters the tip side of the teeth base in the formation region of the steel plate of the plurality of split core members constituting each annular magnetic member, and can punch the steel plate The manufacturing apparatus of the core member of the stator of Claim 3 or Claim 4 comprised.

Images