Method for manufacturing core member and device for manufacturing core member

Abstract

The method for manufacturing two types of core members (10, 20) includes punching a metal plate (2) by a first die (141) with contours of at least a part of a portion serving as one slot (23) of a stator core member (20) and a portion serving as one recess or projection for separation of a rotor core member (10) as one hole, and punching the metal plate (2) punched by the first die (141) with the contours of at least a part of a portion serving as one slot (23) of the stator core member (20) and a portion serving as one recess or projection for separation of the rotor core member (10) as one hole. The rotor core member (10) is formed by punching the outer peripheral contour of the portion forming the rotor core member (10) with a second die, the rotor core member (10) is formed by punching a metal plate (2) in which the rotor core member (10) is punched, at least the inner peripheral contour of the portion forming the stator core member (20) is punched with a third die, and the metal plate (2) punched by the third die is molded with a second die. The stator core member (20) is formed by punching the outer peripheral contour of the portion of the stator core member (20) using a fourth die.

Description

Technical Field

[0001] This disclosure relates to a method for manufacturing iron core components and an apparatus for manufacturing iron core components. Background Technology

[0002] In order to obtain a motor core (a general term for rotor core or stator core) used in motors installed in electric vehicles, etc., it has been done in the past to manufacture a laminate of multiple iron core components.

[0003] Japanese Patent Application Publication No. 2023-102698 describes a method for manufacturing a stacked iron core by stacking multiple (e.g., hundreds) of annular iron chips in a mold. The annular iron chips are formed into annular shapes by punching thin strips of sheet metal with a punch and a die. The stacked iron core is then used as a rotor core or stator core. Summary of the Invention

[0004] The problem the invention aims to solve When punching ring-shaped iron chips from thin sheet strips, it is preferable to obtain the ring-shaped iron chip that serves as the rotor core, i.e., the rotor chip, from the internal region of the ring-shaped iron chip that serves as the stator core. This reduces the waste of the thin sheet strips.

[0005] On the other hand, in order to eliminate the thickness deviation of the thin sheet metal during the stacking of annular iron chips, a technique is employed whereby the chips are divided into blocks with a number of sheets less than the number of annular iron chips in the final stacked core, and each block rotates relative to the other in the circumferential direction of the annular iron chips. When dividing the annular iron chip blocks, to allow time for rotating the lower block before a new block is stacked, or to allow time for transporting the block to the stacking location, it is advisable to form a separator sheet on the annular iron chips. The separator sheet is a structure in the stacking die (also called the extrusion section) used to separate the side-supported locking annular iron chips from the unsupported non-locking annular iron chips during the stacking of annular iron chips to form blocks. To briefly explain the method of separation using this separator sheet, firstly, for the annular iron chips, a predetermined number of locking and non-locking annular iron chips are alternately formed and fed into the extrusion section. Within the pressing section that transports the ring-shaped iron chips downwards, the locking ring-shaped iron chips are supported from the side, but the non-locking ring-shaped iron chips are not supported and are thus placed on top of the locking ring-shaped iron chips. Therefore, as the locking ring-shaped iron chips are removed from the pressing section, the non-locking ring-shaped iron chips are also removed from the pressing section while placed on top of the locking ring-shaped iron chips. The locking ring-shaped iron chips in the pressing section above the non-locking ring-shaped iron chips remain in the pressing section because they are supported from the side, until they are pushed out by newly inserted ring-shaped iron chips and removed from the pressing section. Thus, the time from when the non-locking ring-shaped iron chips are removed from the pressing section until the next locking ring-shaped iron chip is removed can be used as the time for rotating the block or the time for transporting the block.

[0006] As an example of the structure of the separator, it is possible to form a recess on the outer periphery of the non-locking annular iron chip to prevent the pressed portion from being supported from the side. However, in general, due to the narrow gap between the rotor chip and the stator chip, it is difficult to ensure the punch area for forming the recess for the separator on the outer periphery of the rotor chip.

[0007] In view of the above-mentioned problems, this disclosure provides a method and apparatus for manufacturing a core component that can ensure the space of a mold used to form a recess or protrusion for separation.

[0008] means for solving problems The first aspect of the disclosed method for manufacturing a core component comprises two types of core components: a rotor core component having a recessed or convex portion for separation on its outer periphery, and a stator core component having a plurality of teeth formed on its inner periphery. The method includes: a step of punching a metal plate with a first die forming a hole through which at least a portion of a slot between adjacent teeth of the stator core component and the outline of a portion of the recessed or convex portion for separation of the rotor core component are formed; a step of punching the outer periphery outline of the portion forming the rotor core component using a second die on the metal plate punched with the first die to form the rotor core component; a step of punching at least the inner periphery outline of the portion forming the stator core component using a third die on the metal plate after the rotor core component has been punched; and a step of punching the outer periphery outline of the portion forming the stator core component using a fourth die on the metal plate punched with the third die to form the stator core component.

[0009] If configured in this way, since a partition recess or protrusion is formed at the position of the rotor core member corresponding to the position of the slot formed between the teeth of the stator core member, space for the mold used to form the partition recess or protrusion can be ensured at the position of the slot.

[0010] Furthermore, as a second aspect of the manufacturing method for the core component of this disclosure, in the first aspect of the manufacturing method for the core component of this disclosure described above, the first die is configured to punch the contour of the portion that forms part of the slot and the portion that forms the dividing recess or protrusion of the rotor core component. Before punching the metal plate using the fourth die, a step of punching the entire portion that forms the slot using a fifth die may be performed. Typically, the step of punching the entire portion that forms the slot using the fifth die can be performed simultaneously with the step of punching using the first die, or can be performed between the step of punching using the first die and the step of punching the metal plate using the fourth die.

[0011] If configured in this way, the shape and size of the groove are determined by the fifth mold, and the shape and / or size of the groove can be easily changed by changing the fifth mold.

[0012] Furthermore, as a third-party method for manufacturing core components according to this disclosure, in the first or second method of manufacturing core components according to the above disclosure, the first mold is configured to punch the contour of the portion that becomes part of the slot and the portion that becomes the partition of the rotor core component, and the third mold may be configured to punch at least a portion of the slot and the inner circumferential contour of the portion that becomes the stator core component as a single piece.

[0013] If configured in this way, the scraps from the metal sheet punched using the third die will have an uneven shape when viewed from above, which can suppress the scraping of the punched metal sheet.

[0014] Furthermore, as a fourth aspect of the manufacturing method of the core component of this disclosure, in any one of the first to third aspects of the manufacturing method of the core component of this disclosure, the stator core component includes an annular magnetic yoke, the teeth having: an extension extending from the inner circumferential surface of the magnetic yoke toward the center of the magnetic yoke; and a front end portion extending in the circumferential direction of the yoke at the front end of the extension portion on the side of the center of the magnetic yoke, the first mold may be configured such that the hole between the teeth covers the entire area of ​​the front end portion in the radial direction of the magnetic yoke.

[0015] This configuration improves the rigidity of the first die, thereby increasing the punching accuracy of the metal sheet and preventing damage to the first die.

[0016] The fifth aspect of the core component manufacturing apparatus disclosed herein manufactures two types of core components: a rotor core component having a separating recess or protrusion on its outer periphery and a stator core component having a plurality of teeth formed on its inner periphery. The apparatus comprises: a conveying mechanism for conveying a metal plate; a first die for punching a hole in the metal plate, the hole forming at least a portion of a groove between adjacent teeth of the stator core component and a portion of a separating recess or protrusion of the rotor core component; a second die for forming the outer periphery contour of a portion of the rotor core component; a third die for forming at least an inner periphery contour of a portion of the stator core component; a fourth die for forming the outer periphery contour of a portion of the stator core component; and a stamping machine for actuating the first die, the second die, the third die, and the fourth die.

[0017] If configured in this way, a recess or protrusion for separation can be formed at the position of the rotor core member corresponding to the position of the groove formed between the teeth of the stator core member, and space for the mold for forming the recess or protrusion for separation can be ensured at the position of the groove.

[0018] Invention Effects According to this disclosure, since a partition recess or protrusion is formed at the position of the rotor core member corresponding to the position of the slot formed between the teeth of the stator core member, space for the mold used to form the partition recess or protrusion can be ensured at the position of the slot. Attached Figure Description

[0019] Figure 1This is a top view showing an example of a rotor core component manufactured by a method for manufacturing a core component according to one embodiment and a core component manufacturing apparatus.

[0020] Figure 2 This is a top view showing an example of a stator core component manufactured by a method for manufacturing a core component according to one embodiment and a core component manufacturing apparatus.

[0021] Figure 3 This is a top view showing an example of the layout of the rotor core assembly and stator core assembly removed from the metal plate.

[0022] Figure 4 This is a longitudinal sectional view showing the schematic structure of a core component manufacturing apparatus according to one embodiment.

[0023] Figure 5A This is a partial top view showing the shape of a metal plate and a punch in a first punching region around the boundary of a portion of a rotor core component and a stator core component manufactured by a core component manufacturing method and core component manufacturing apparatus according to an embodiment.

[0024] Figure 5B This is a partial top view showing the shape of a metal plate and a punch in a second punching region around the boundary of a part that becomes a rotor core component and a stator core component, manufactured by a core component manufacturing method and core component manufacturing apparatus according to one embodiment.

[0025] Figure 5C This is a partial top view showing the shape of a metal plate and a punch in a third punching region around the boundary of a portion that becomes a rotor core component and a stator core component, manufactured by a core component manufacturing method and core component manufacturing apparatus according to one embodiment.

[0026] Figure 5D This is a partial top view showing the shape of a metal plate and a punch in a fourth punching region around the boundary of a part that becomes a rotor core component and a stator core component, manufactured by a core component manufacturing method and core component manufacturing apparatus according to one embodiment.

[0027] Figure 5E This is a partial top view showing the shape of a metal plate and a punch in a fifth punching zone around the boundary of a portion that becomes a rotor core component and a stator core component, manufactured by a core component manufacturing method and core component manufacturing apparatus according to one embodiment.

[0028] Figure 6A This is a schematic horizontal cross-sectional view of the upstream section of the extrusion section of a core component manufacturing apparatus according to one embodiment.

[0029] Figure 6B This is a rough horizontal cross-sectional view of the downstream section of the extrusion section.

[0030] Figure 7 This is a flowchart illustrating an example of the manufacturing sequence of the rotor core component and the stator core component in a method for manufacturing a core component according to one embodiment.

[0031] Figure 8A This is a partial top view showing the shape of a metal plate and a punch in a first punching region around the boundary of a portion of a rotor core component and a stator core component manufactured by a method and apparatus for manufacturing a core component according to a modified embodiment.

[0032] Figure 8B This is a partial top view showing the shape of a metal plate and a punch in a second punching region around the boundary of a part that becomes a rotor core component and a stator core component, manufactured by a method and apparatus for manufacturing a core component according to a modified embodiment.

[0033] Figure 8C This is a partial top view showing the shape of a metal plate and a punch in a third punching region around the boundary of a portion of a rotor core component and a stator core component manufactured by a method and apparatus for manufacturing a core component according to a modified embodiment.

[0034] Figure 8D This is a partial top view showing the shape of a metal plate and a punch in a fourth punching region around the boundary of a portion of a rotor core component and a stator core component manufactured by a method and apparatus for manufacturing a core component according to a modified embodiment.

[0035] Figure 8E This is a partial top view showing the shape of a metal plate and a punch in a fifth punching zone around the boundary of a portion of a rotor core component and a stator core component manufactured by a method and apparatus for manufacturing a core component according to a modified embodiment. Detailed Implementation

[0036] This application is based on Japanese Patent Application No. 2023-135063 filed on August 22, 2023, the contents of which form part of the content of this application.

[0037] Furthermore, the present invention will be more fully understood through the following detailed description. The further scope of the invention will become clear from the following detailed description. However, the detailed description and specific examples are preferred embodiments of the invention and are provided for illustrative purposes only. Therefore, various modifications and alterations will be apparent to those skilled in the art from this detailed description, within the spirit and scope of the invention.

[0038] The applicant does not intend to contribute any of the described embodiments to the public, and any changes or alternatives disclosed that may not be included in the scope of the claims are also considered part of the invention under the doctrine of equivalents.

[0039] Hereinafter, the embodiments will be described with reference to the accompanying drawings. Furthermore, in each drawing, identical or equivalent components are labeled with the same or similar reference numerals, and repeated descriptions are omitted.

[0040] Before describing the manufacturing method and apparatus for the core component according to one embodiment of this disclosure, a general overview of the core component will be provided. The core component manufactured according to this embodiment is generally divided into a rotor core component 10 constituting the motor core (see reference...). Figure 1 ) and the stator core component 20 constituting the motor core (refer to Figure 2 There are two types. For the rotor core component 10 and the stator core component 20, there are two types: one for locking and one for non-locking. This type will be described later.

[0041] Figure 1 This is a top view showing an example of the rotor core component 10. Figure 1 The example shown is a non-locking rotor core component 10. The rotor core component 10 can be constructed from a single plate-shaped electromagnetic steel plate of a specified thickness, with a generally circular planar shape. A central hole 11 is formed in the center of the circular plate-shaped rotor core component 10. The central hole 11 is shaped to allow the insertion of a shaft constituting the rotating shaft of the motor when the rotor core, constructed by stacking the rotor core components 10, is assembled into a motor. Typically, it can be a circular through hole, but can be appropriately modified to a shape corresponding to the cross-sectional shape of the shaft. Furthermore, a plurality of peripheral holes 12 are formed around the central hole 11. The peripheral holes 12 are shaped to allow the insertion of permanent magnets when assembled into a motor. For example, they can be rectangular or arc-shaped through holes, but their specific shape is not particularly limited. Additionally, the number of peripheral holes 12 can be arbitrarily varied, and can be compared to... Figure 1The number shown is more than four, for example, about 10 to 40. Furthermore, the rotor core member 10 has multiple recesses 13 formed on its circular outer periphery. The recesses 13 are structures significant for separation during the stacking of the rotor core members 10, equivalent to recesses for separation. Typically, separation involves dividing the rotor core member 10 into blocks stacked with a number of plates fewer than the number constituting the rotor core. Typically, these blocks, formed by separation, are rotated and stacked or transported. The recesses 13 are formed by cutting off a portion of the outer periphery of the circular plate. In this embodiment, four recesses 13 are arranged at equal intervals (i.e., 90° intervals), but the specific number is not particularly limited, for example, about 10 to 20. Regardless of the number, it is preferable that the recesses 13 are arranged at equal intervals. Furthermore, for ease of understanding, in Figure 1 The depth of the recess 13 is exaggerated; typically, the depth of the recess 13 is greater than... Figure 1 The indicated light (or small).

[0042] Figure 2 This is a top view showing an example of a stator core component 20. Figure 2 The example shown is a stator core member 20 for locking. The stator core member 20 can include: an annular yoke 21 with a through hole formed at its center for mounting a rotor core; and teeth 22, generally T-shaped in plan view, protruding from the inner circumferential surface of the yoke 21 toward its center. The teeth 22 have: an extension 22e extending from the inner circumferential surface of the yoke 21 toward its center; and a front end 22t located at the front end of the extension 22e on the side of the center of the yoke 21. The front end 22t of the teeth 22 extends circumferentially over the yoke 21. The stator core member 20 can also be constructed from a single sheet of electromagnetic steel with a specified thickness. Multiple teeth 22, for example, eight, can be arranged substantially at equal intervals along the inner circumferential surface of the stator core member 20. The front ends 22t of adjacent teeth 22 do not contact each other and are spaced apart. A slot 23 is formed between adjacent teeth 22 to serve as a space. When the armature coil is assembled into the stator core, which is formed by stacking and joining the stator core members 20, it can be wound around the tooth 22 in a manner that passes through the slot 23. Furthermore, the specific shape or configuration of the tooth 22 can be appropriately changed.

[0043] like Figure 3 As shown, the rotor core component 10 is the size of the through hole housed inside the stator core component 20. This is also evident from the fact that, when assembled into a motor, the rotor core formed by stacking the rotor core components 10 rotates inside the stator core formed by stacking the stator core components 20, thus preventing interference between the two. When a single sheet of electromagnetic steel is punched to form the rotor core component 10 and the stator core component 20, as... Figure 3As shown, if the rotor core member 10 is removed from the internal region of the stator core member 20, the waste of the electromagnetic steel sheet is reduced, which is preferable. However, the gap between the rotor core member 10 and the stator core member 20 becomes very narrow. Here, when punching the electromagnetic steel sheet to form the recess 13 of the rotor core member 10, to avoid complicating the punch shape, the punches for the circular outer periphery of the rotor core member 10 and the portion of the recess 13 formed on that periphery are usually separated. The punch used when punching the recess 13 also needs to be of a minimum size. If the recess 13 is to be punched in a way that does not interfere with the stator core member 20, the depth of the recess 13 must be increased. However, deepening the recess 13 will have an impact on the formation of the rotor core. Therefore, the following describes a core member manufacturing apparatus and a core member manufacturing method that avoids making the depth of the recess 13 excessive when removing the rotor core member 10 from the internal region of the stator core member 20.

[0044] Figure 4 This is a longitudinal sectional view showing the schematic structure of a core component manufacturing apparatus 1 (hereinafter referred to as "manufacturing apparatus 1") according to an embodiment of the present disclosure. The manufacturing apparatus 1 includes forming portions 3 that progressively punch metal sheets 2 to form rotor core components 10 and stator core components 20. Furthermore, in the following text, Figure 4 Arrow X indicates the left-right direction; similarly, arrow Y indicates the front-back direction, and arrow Z indicates the up-down direction. The forming section 3 of the manufacturing apparatus 1 can be mainly composed of a progressive die mechanism 30. The progressive die mechanism 30 includes: a transport mechanism 31 for transporting the metal sheet 2 along a first transport direction A1; a die unit 32 for punching the metal sheet 2 into a predetermined shape; and a stamping press 33 that enables the die unit 32 to operate in a direction intersecting the first transport direction A1 (up-down direction in this embodiment).

[0045] The conveying mechanism 31 is used to convey the metal plate 2 along a first conveying direction A1 (e.g., left-right direction). The metal plate 2 conveyed by the conveying mechanism 31 can be made of a strip, which is made of an electromagnetic steel plate that is long in one direction. Along the conveying path of the metal plate 2 conveyed by the conveying mechanism 31, a plurality of (five in this embodiment) punching areas P1 to P5 are arranged sequentially at predetermined intervals from the upstream side to the downstream side of the conveying direction of the metal plate 2. Each punching area P1 to P5 is provided with a die that matches the shape to be punched in that area. In this embodiment, a first die 140 is provided in the first punching area P1, a second die 240 is provided in the second punching area P2, a third die 340 is provided in the third punching area P3, a slot die 345 is provided in the fourth punching area P4, and a fourth die 440 is provided in the fifth punching area P5. In this context, the conveying mechanism 31 can convey the metal plate 2 intermittently at a conveying interval that is the same as the interval between the punching areas.

[0046] The stamping press 33 is a device that enables the die unit 32 to move vertically. The stamping press 33 causes the die unit 32 to move vertically as a whole. Therefore, when the die unit 32 moves vertically, the punches of each die located in each of the punching areas P1 to P5 all move vertically. The dies 140, 240, 340, 345, and 440 located in each of the punching areas P1 to P5 constitute a part of the die unit 32.

[0047] The mold unit 32 will be described in further detail. The mold unit 32 mainly includes: a punch plate 34, which forms the upper mold and is mounted on a punch holder (not shown), and has multiple punches arranged in each punching area P1 to P5; a punch plate 35, which forms the lower mold and has multiple punches mounted on it; and a ejector 36, which is elastically mounted on the punch holder. In addition to the structures described above, the mold unit 32 may also include guide pins for guiding the vertical movement of the punch plate or locating pins for horizontal positioning, springs for supporting the ejector, etc. However, since these are well-known structures in the field of progressive punching dies, illustrations or detailed descriptions are omitted.

[0048] The first die 140 disposed in the first punching area P1 includes a first punch 141 fixed to the punch plate 34 and a first die 142 disposed on the punching plate 35 at a position opposite to the first punch 141. Figure 5A As shown, the first punch 141 is shaped to punch a portion of the contour of the slot 23 that ultimately becomes the stator core member 20 and the recess 13 that ultimately becomes the rotor core member 10. Figure 5A In the image, the portions that ultimately become the rotor core component 10 and the stator core component 20 are shown using double-dotted lines. Furthermore, Figure 5Aand the following description Figures 5B to 5E This is a partial top view showing the shape of the metal plate 2 and the punch around the boundary of the portion that ultimately becomes the rotor core component 10 and the stator core component 20. The portion indicated by the diagonal lines in the figure is the part of the metal plate 2 that is punched out. Additionally, in Figures 5A-5E In this design, the outlines of the rotor core component 10 and stator core component 20, which were originally arc-shaped, are simplified to straight lines. The first punch 141 has the same shape and size as the portion of the metal plate 2 that is being punched. The first die 142 has a planar shape that is hollowed out to correspond to the shape of the first punch 141, so that it can precisely accept... Figure 5A The first punch 141 is shown. The first die 140, including the first punch 141 and the first die 142, is a die for punching a portion of the outline that forms a recess 13 and a portion that forms a groove 23 as a hole; it corresponds to the first die. In this embodiment, as... Figure 5A As shown, the first punch 141 is formed such that, viewed radially from the stator core member 20, it can punch the entire size from the inner circumference to the outer circumference between the portions of the front ends 22t of adjacent teeth 22. In other words, a hole punched by the first punch 141 and the first die 142 is formed radially in the entire area of ​​the portion of the yoke 21 that becomes the front end 22t of the tooth 22. By configuring the first punch 141 and the first die 142 in this way, the rigidity of the die can be improved, the punching accuracy of the metal plate 2 can be improved, and damage to the die can be suppressed.

[0049] The second die 240, disposed in the second punching area P2, includes a second punch 241 fixed to the punch plate 34 and a second die 242 disposed on the punching die 35 at a position opposite to the second punch 241. Figure 5B As shown, the second punch 241 is shaped to punch the outer peripheral contour of the portion that forms the rotor core component 10. Furthermore, in Figure 5B In the diagram, a portion of the second punch 241 is represented by a dashed line. More specifically, in... Figure 5B In the diagram, when the portion of the rotor core member 10 being punched from the metal plate 2 is shown with diagonal lines, the second punch 241 is approximately shaped along the portion that forms the rotor core member 10. However, the portion of the second punch 241 corresponding to the recess 13 is not the same shape as the recess 13, but rather a shape corresponding to the outer periphery of the portion assuming there is no recess 13. That is, in Figure 5B In the diagram, a portion of the second punch 241 corresponding to the outer peripheral contour assuming no recess 13 is shown by a dashed line. The second die 242 is formed with an opening that can precisely receive the second punch 241. The second mold 240, including the second punch 241 and the second die 242, is a mold for punching the outer peripheral contour of the portion that becomes the rotor core member 10, and is equivalent to a second mold.

[0050] In this embodiment, an extrusion section 80 is provided below the second die 242. The extrusion section 80 supports the rotor core component 10 separated from the metal plate 2 from the side while transporting it along a second transport direction A2 that intersects the first transport direction A1. In this embodiment, the second transport direction A2 corresponds to the vertical direction. The extrusion section 80 can be constructed from a substantially cylindrical component with one end connected to the lower end of the second die 242. Furthermore, the extrusion section 80 can transport the rotor core component 10, which has been punched and pushed downwards towards the second die 242, in a stacked state. The rotor core components 10 transported from the progressive die mechanism 30 can be sequentially transported into and supported at the upper end of the extrusion section 80. Therefore, whenever a new rotor core component 10 is transported into the extrusion section 80, the rotor core component 10 already held in the extrusion section 80 is pressed by the transported rotor core component 10, and the thickness of the rotor core component 10 is transported downwards within the extrusion section 80. Furthermore, in Figure 4 In this embodiment, for ease of understanding, a case is illustrated where the number of rotor core components 10 transported within the extrusion section 80 is relatively small. However, the number of rotor core components 10 that can be transported within the extrusion section 80 can be in the tens to hundreds. Furthermore, the total number of rotor core components 10 constituting the laminate can also be in the tens to hundreds. In this embodiment, the extrusion section 80 includes: an upstream extrusion section 81 located upstream of the rotor core component 10 in the transport direction; and a downstream extrusion section 82 located downstream of the rotor core component 10 in the transport direction.

[0051] Figure 6A This is a schematic horizontal sectional view of the upstream section 81 of the extrusion section. Figure 6B This is a schematic horizontal sectional view of the downstream section 82 of the extrusion section. Here, the types of locking and non-locking mechanisms of the rotor core member 10 will be explained. Previously explained... Figure 1 The rotor core member 10 shown is for non-locking purposes, but as mentioned above, the rotor core member 10 includes both non-locking and locking types. Although the locking rotor core member is not shown in the diagram, it does not have the recess 13 formed compared to the non-locking rotor core member 10, and otherwise has the same structure. Therefore, the outer periphery of the locking rotor core member is a circle without any cuts. Figure 6A As shown, the inner circumferential surface 83 of the upstream portion 81 of the extrusion section is sized to match the outer diameter of the locking rotor core member and the non-locking rotor core member 10 transported within the extrusion section 80. Therefore, the sides (i.e., the outer periphery) of the locking rotor core member and the non-locking rotor core member 10 passing through the upstream portion 81 of the extrusion section abut against and are supported by the inner circumferential surface 83. Figure 6BAs shown, a locking protrusion 85 extending toward the center of the extrusion section 80 is formed on the inner peripheral surface of the downstream portion 82 of the extrusion section, opposite to the recess 13 of the non-locking rotor core member 10. In the downstream portion 82 of the extrusion section, the portion of its inner peripheral surface other than the portion where the locking protrusion 85 is formed does not support either the locking rotor core member or the non-locking rotor core member 10. In other words, a gap 84 is formed between the inner peripheral surface of the downstream portion 82 of the extrusion section, excluding the portion where the locking protrusion 85 is formed, and the outer peripheral surface of each rotor core member. The locking protrusion 85 partially contacts the locking rotor core member on its outer periphery, but due to the presence of the recess 13, it does not contact the non-locking rotor core member 10, thus not supporting the non-locking rotor core member 10. If the extrusion section 80 described above is used, only the locking rotor core member is transported in a supported state in the downstream section 82 of the extrusion section. The non-locking rotor core member 10 is not supported laterally by the extrusion section 80, but moves within the downstream section 82 in a state where it is placed on the upper surface of the locking rotor core member located downstream. Furthermore, the non-locking rotor core member 10 in the downstream section 82 is simultaneously removed from the extrusion section 80 when the locking rotor core member located below it is removed from the lower end of the extrusion section 80.

[0052] like Figure 4 As shown, the third die 340 disposed in the third punching area P3 includes a third punch 341 fixed to the punch plate 34 and a third die 342 disposed on the punching die 35 at a position opposite to the third punch 341. In this embodiment, as... Figure 5C As shown, the third punch 341 is formed to punch the inner circumferential contour of the portion that becomes the stator core member 20. Furthermore, in Figure 5C In the diagram, the third punch 341 is mainly represented by dashed lines, and the portion of the metal plate 2 overlapping the portion to be punched is represented by solid lines. The third punch 341 is formed to include the size of the portion of the metal plate 2 to be punched. The boundary edges of the third punch 341, which form the inner peripheral contour of the portion that becomes the stator core member 20, are smoothly connected without any bumps or depressions. Therefore, when the metal plate 2 is punched with the third punch 341, a blank punch is performed in the space between adjacent teeth 22 of the portion that becomes the stator core member 20. The third die 342 is formed with an opening that can precisely receive the third punch 341. The third mold 340, which includes the third punch 341 and the third die 342, is a mold for punching the inner peripheral contour of the portion that becomes the stator core member 20, and is equivalent to a third mold.

[0053] The slotting die 345 disposed in the fourth punching area P4 includes a slotting punch 346 fixed to the punch plate 34 and a slotting die 347 disposed on the punching die 35 at a position opposite to the slotting punch 346. In this embodiment, as... Figure 5DAs shown, the slot punch 346 is shaped to punch all the slots 23 that form part of the stator core component 20. The slot punch 346 has the same shape and size as the part of the metal plate 2 to be punched. The slot die 347 has a planar shape that is hollowed out to correspond to the shape of the slot punch 346, so as to be able to receive the slot punch 346. Figure 5D The slot punch 346 is shown. The slot die 345, which includes the slot punch 346 and the slot die 347, is a die that punches the entire portion of the slot 23 as a hole, equivalent to the fifth die.

[0054] The fourth die 440, disposed in the fifth punching area P5, includes a fourth punch 441 fixed to the punch plate 34 and a fourth die 442 disposed on the punching die 35 opposite to the fourth punch 441. In this embodiment, as... Figure 5E As shown, the fourth punch 441 is shaped to punch the outer periphery of the portion that forms the stator core component 20. Furthermore, in Figure 5E In the diagram, the portion of the fourth punch 441 other than the overlap with the stator core member 20 is indicated by dashed lines. The fourth punch 441 is sized to include the portion of the metal plate 2 to be punched. The fourth die 442 has an opening that can precisely receive the fourth punch 441. The fourth mold 440, including the fourth punch 441 and the fourth die 442, is a mold for punching the outer peripheral contour of the portion that becomes the stator core member 20, and is equivalent to a fourth mold.

[0055] In this embodiment, an extrusion section 90 is provided below the fourth die 442. The extrusion section 90 has the same function as the extrusion section 80 located below the second die 242, supporting the stator core component 20 separated from the metal plate 2 from the side while transporting it along the second transport direction A2 (corresponding to the vertical direction in this embodiment). Like the extrusion section 80, the extrusion section 90 can be constructed from a substantially cylindrical component with one end connected to the lower end of the fourth die 442. Furthermore, the extrusion section 90 can transport the stamped stator core component 20, which is pushed downwards from the fourth die 442, in a stacked state. The stator core component 20 removed from the progressive die mechanism 30 can be sequentially moved into and supported at the upper end of the extrusion section 90.

[0056] Furthermore, as described above, the stator core component 20 also includes both locking and non-locking types. (Previously explained...) Figure 2The stator core member 20 shown is for locking. Although not shown in the figure, a non-locking stator core member can be used, which has a cutout on its outer periphery corresponding to the recess 13 of the rotor core member 10. In this embodiment, the pressing portion 90 includes an upstream pressing portion 91 located upstream of the core member in the transport direction and a downstream pressing portion 92 located downstream of the core member in the transport direction. The upstream pressing portion 91 has an inner circumferential surface that matches the outer diameter of both the locking stator core member 20 and the non-locking stator core member being transported, and is also sized to match the upstream pressing portion 81 (see reference 81). Figure 6A The same structure. The downstream part 92 of the extrusion section, except for its inner circumferential surface, has a gap 84 (see reference) on the outer side of the outer diameter of the stator core member 20. Figure 6B Apart from the size of the gap corresponding to the extrusion section 82 (see reference ) Figure 6B The same structure is used. If such a pressing section 90 is adopted, in the downstream section 92 of the pressing section, only the stator core member 20 for locking is transported in a supported state, while the non-locking stator core member is not supported and moves on the upper surface of the locking stator core member located downstream. Furthermore, the non-locking stator core member in the downstream section 92 is removed from the pressing section 90 simultaneously with the locking stator core member 20 located below it being removed from the lower end of the pressing section 90. Additionally, as a variation of the pressing section 90, it is also possible to omit the corresponding locking protrusion 85 (see reference 90) in the downstream section 92. Figure 6B The inner circumferential surface of the downstream portion 92 of the extrusion section is formed into a smooth circular shape to serve as a stator core component for locking. Figure 2 The stator core component 20 shown has a mold with an outwardly protruding convex portion on its outer periphery. In this case, Figure 2 The stator core member 20 shown can be used for non-locking purposes. Alternatively, in this case, a recess (which does not interfere with the protrusion) of the stator core member used for locking can be provided on the inner circumferential surface of the upstream portion 91 of the extrusion section.

[0057] In order to control the aforementioned components, the manufacturing apparatus 1 of this embodiment may further include a control device 100. For example... Figure 4As shown by the dashed lines, the control device 100 can be communicatively connected to its constituent components via wired or wireless communication. The control device 100 can employ a computer including a Programmable Logic Controller (PLC). The control device 100 may include at least one of the following physical structures: a processor 102, a memory 104 (RAM (Random Access Memory) and / or ROM (Read-Only Memory)) and a storage device 106. Furthermore, the control device 100, such as the memory 104 and / or the storage device 106, may have programs for properly operating the aforementioned devices, which can be executed using the processor 102. The components of the control device 100 (including at least one of the processor 102, memory 104, and storage device 106) are typically interconnected and can communicate with each other via buses such as system buses or control buses.

[0058] Next refer to Figure 7 The method for manufacturing a rotor core component 10 and a stator core component 20 using the manufacturing apparatus 1 of this embodiment will be described. Figure 7 This is a flowchart illustrating an example of the manufacturing sequence of the rotor core component 10 and the stator core component 20. In the following description, an example is given regarding the case where the aforementioned manufacturing apparatus 1 is primarily used to manufacture the non-locking rotor core component 10 and the locking stator core component 20. Furthermore, the manufacturing method of the rotor core component 10 and the stator core component 20 of this disclosure can be implemented even with apparatus other than the manufacturing apparatus 1. The description of the manufacturing method of the rotor core component 10 and the stator core component 20 of this embodiment implemented by the manufacturing apparatus 1 also serves as an explanation of the function of the manufacturing apparatus 1. Additionally, in the following description, when referring to the structure of the manufacturing apparatus 1, the rotor core component 10, and the stator core component 20, appropriate reference will be made to... Figures 1 to 5E The operation of the various devices and equipment constituting the manufacturing apparatus 1 in the following manufacturing method for the rotor core component 10 and stator core component 20 is typically based on instructions from the control device 100. The manufacturing method for the rotor core component 10 and stator core component 20 of this embodiment can be provided as a program (including a program product) or as a non-transitory computer-readable medium storing the program, which is used to cause the processor 102 of the control device 100, which controls the various components of the manufacturing apparatus 1, to perform predetermined operations.

[0059] When manufacturing a rotor core component 10 and a stator core component 20 begins, if the manufacturing equipment 1 is stopped, the transport mechanism 31 intermittently transports the strip metal plate 2 before manufacturing begins. If the manufacturing equipment 1 is running, the intermittent transport of the strip metal plate 2 by the transport mechanism 31 has already been performed. Manufacturing of the rotor core component 10 and the stator core component 20 begins while the strip metal plate 2 is being intermittently transported.

[0060] Once the manufacturing of the core component begins, the stamping press 33 is activated when the portion of the metal plate 2 to form the core component reaches the first punching area P1, passing through the first die 140. The outline of the portion that will become the slot 23 and the portion that will become the recess 13 is punched as a hole (S1; see also...). Figure 5A Because the outline of the portion that will become part of the groove 23 and the portion that will become the recess 13 is punched as a hole, even if the size of the first punch 141 forming the recess 13 in the depth direction is larger than the recess 13, the portion of the first punch 141 that is not fully contained in the recess 13 can be retracted to the portion that becomes the groove 23. Thus, without increasing the depth of the recess 13, the recess 13 can be formed without interfering with the portion that becomes the stator core member 20. The portion of the punched metal plate 2 is received in the first die 142 and pushed downward by the portion of the subsequently punched metal plate 2, and finally ejected from the first die 142 and falls below the first die 142. Furthermore, in the case of forming the rotor core member for locking, a punch of a shape and size that does not form the recess 13 can be used to punch the metal plate 2.

[0061] Next, when a portion of the remaining metal sheet 2 after being punched by the first die 140 reaches the second punching area P2, the press 33 is activated, and the outer periphery of the portion that becomes the rotor core component 10 is punched through the second die 240 (S2; see also) Figure 5BThe metal plate 2 punched by the second die 240 becomes the rotor core component 10. The punched rotor core component 10 is housed in the second die 242 and pushed downward by the subsequently punched rotor core component 10. If it comes out of the second die 242, it enters the extrusion section 80. As described above, the rotor core component 10 entering the extrusion section 80 is supported from the side by the extrusion section 80 and transported downward. As described above, with regard to the rotor core component 10 transported downward by the extrusion section 80, the non-locking rotor core component 10 is placed with the locking rotor core component below it, and both are simultaneously removed from the lower end of the extrusion section 80. If the non-locking rotor core component 10 and the locking rotor core component are removed from the extrusion section 80 at the same time, the time interval from the removal of the non-locking rotor core component 10 to the removal of the locking rotor core component from the lower end of the downstream section 82 of the extrusion section becomes longer (separation). Therefore, the time during which the interval becomes longer can be used as the time for rotating or transporting the assembly (i.e., block) of the rotor core components 10 for locking and non-locking purposes.

[0062] Subsequently, when the metal plate 2, after being punched out of the rotor core component 10 by the second die 240, reaches the third punching area P3, the stamping press 33 is activated, and the inner circumferential contour of the part that becomes the stator core component 20 is punched through the third die 340 (S3; see also) Figure 5C The portion of the metal plate 2 punched out by the third die 340 (in this embodiment, this portion corresponds to the gap between the rotor core member 10 and the stator core member 20) is housed in the third die 342. The portion of the metal plate 2 housed in the third die 342 is pushed downward by the subsequently punched portion of the metal plate 2, and finally comes out of the third die 342 and falls below the third die 342.

[0063] Subsequently, when a portion of the remaining metal plate 2, after being punched by the third die 340, reaches the fourth punching area P4, the press 33 is activated, and through the slot die 345, all the slots 23 that form the stator core component 20 are punched (S4; see also) Figure 5D The portion of the metal plate 2 punched by the slot die 345 (corresponding to the slot 23 of the stator core component 20 in this embodiment) is housed in the slot die 347. The portion of the metal plate 2 housed in the slot die 347 is pushed downwards by the subsequently punched portion of the metal plate 2, eventually exiting the slot die 347 and falling below it. Furthermore, in Figure 7 In the flowchart shown, for convenience, the process of punching all the slots 23 (S4) is performed after the process (S3), but it can also be performed between the processes (S2) and (S3), or between the processes (S1) and (S2).

[0064] After process (S4), when a portion of the remaining metal plate 2 after being punched by the slot die 347 reaches the fifth punching area P5, the press 33 is activated, and the outer periphery of the portion that becomes the stator core component 20 is punched through the fourth die 440 (S5; see also). Figure 5E The metal plate 2, punched by the fourth die 440, becomes the stator core component 20. The punched stator core component 20 is housed in the fourth die 442 and pushed downwards by subsequently punched stator core components 20. If it exits the fourth die 442, it enters the extrusion section 90. As described above, the stator core component 20 entering the extrusion section 90 is supported from the side by the extrusion section 90 and transported downwards. In the extrusion section 90, the stator core components 20 are separated according to the same procedure as that performed by the extrusion section 80. In the case of forming a non-locking stator core component, a punch with a shape and size capable of forming a non-locking recess can be switched to punch the metal plate 2. Once the stator core component 20 is punched out, the manufacturing of one rotor core component 10 and one stator core component 20 is completed.

[0065] Focusing on a specific portion of the metal plate 2, this portion is intermittently transported from the first punching region P1 to the fifth punching region P5 according to the above-described procedure, receiving the action of the stamping machine 33 at each location, thereby manufacturing one rotor core component 10 and one stator core component 20. On the other hand, focusing on all locations from the first punching region P1 to the fifth punching region P5, at each location, whenever the metal plate 2 is intermittently transported and receives the action of the stamping machine 33, a component punched from the metal plate 2 is produced. Therefore, whenever the metal plate 2 is intermittently transported and receives the action of the stamping machine 33, the rotor core component 10 is manufactured in the second punching region P2, and the stator core component 20 is manufactured in the fifth punching region P5. At each location, to stop the forming of the component punched from the metal plate 2, the intermittent transport of the metal plate 2 by the transport mechanism 31 is stopped.

[0066] As explained above, according to the manufacturing apparatus 1 and the manufacturing method of the core component of this embodiment, at least a portion of the outline of the recess 13 of the rotor core component 10 and the portion of the slot 23 of the stator core component 20 are punched into a hole. Therefore, even if the depth dimension of the first punch 141 forming the recess 13 is larger than the recess 13, the portion of the first punch 141 that does not completely accommodate the recess 13 can be retracted to the portion that becomes the slot 23. Thus, without increasing the depth of the recess 13, the recess 13 can be formed without interfering with the portion that becomes the stator core component 20.

[0067] Next refer to Figures 8A to 8E A modified example of the mold in manufacturing apparatus 1 will be described. Figures 8A to 8EThis is a partial top view showing the shape of the metal plate 2 and the punch around the boundary of the part that ultimately becomes the rotor core component 10 and the stator core component 20, respectively corresponding to Figures 5A-5E .therefore, Figure 8A The punching process of the metal plate 2 in the first punching area P1 is shown. Figure 8B The punching process of metal plate 2 in the second punching region P2 is shown. Similarly, (The rest of the text is incomplete and cannot be translated.) Figure 8C The punching process of metal plate 2 in the third punching zone P3 is shown. Figure 8D The punching process of metal plate 2 in the fourth punching zone P4 is shown. Figure 8E The punching process of metal plate 2 in the fifth punching zone P5 is shown. Additionally, in... Figures 8A to 8E In this modified example, the outlines of the rotor core component 10 and stator core component 20, which were originally arc-shaped, are simplified to straight lines. The second punch 241 in the second punching region P2 (refer to...) Figure 8B ), the slot punch 346 in the fourth punching area P4 (refer to) Figure 8D ) and the fourth punch 441 in the fifth punching zone P5 (refer to Figure 8E ) respectively with Figure 5B , Figure 5D and Figure 5E The punches shown are the same. However, the shape (or form) of the metal plate 2 during punching may differ. Furthermore, to easily grasp the changing trend of the punching shape, the conditions in each punching region P1 to P5 are repeatedly shown. Figures 8A to 8E As shown. Furthermore, in the following description, when referring to the manufacturing apparatus 1 and the structure of the rotor core component 10 and stator core component 20, appropriate reference will be made to... Figures 1-4 .

[0068] In this modified example, in the first die disposed in the first punching area P1, the first punch 141 is replaced (see reference). Figure 5A ), with a first punch 151 (refer to Figure 8A The first punch 151 and the first punch 141 in this variation (see reference) Figure 5A Compared to the first punch 141, the shape is the same in that it punches out the contours of a portion of the slot 23 that eventually becomes the stator core member 20 and the portion of the recess 13 that eventually becomes the rotor core member 10, but the size is smaller. Specifically, the first punch 141 (see...) Figure 5A The width of the punch 151 corresponds to the distance between the front end 22t of the adjacent tooth 22 that forms part of the stator core member 20, but in this modified example, the first punch 151 (refer to...) Figure 8A The width of the punch 151 in this modified example leaves allowance for additional punching in subsequent processes between adjacent front ends 22t. Figure 8AThe recess 13 of the punched rotor core component 10 is made by the first punch 141 (refer to...) Figure 5A ) The punched-out recess is 13 small.

[0069] As described above, the second punch 241 of this modified example used in the second die disposed in the second punching area P2 (refer to...) Figure 8B )and Figure 5B The second punch 241 shown is the same. Therefore, in this modified example, the outer peripheral contour of the portion that becomes the rotor core member 10 is also punched by the second die 240 in the second punching region P2. Thus, the shape in the second punching region P2 of this modified example is the same as that in the above-described embodiment (see reference). Figure 5B In comparison, the process of punching the rotor core component 10 is the same, but the shape of the remaining metal plate 2 is different. In this modified example, the remaining metal plate 2 after punching the rotor core component 10 is struck by the first punch 151 (see reference 151). Figure 8A The size of the cut after punching out is larger than that of the above-described embodiment (refer to...). Figure 5B )Small.

[0070] In this modified example, in the third die disposed in the third punching area P3, the third punch 143 is replaced (see reference). Figure 5C ), equipped with a third punch 351 (refer to Figure 8C In this variation, the third punch 351 is shaped to simultaneously punch both the inner circumferential contour of the portion forming the stator core member 20 and a portion of the slot 23. In this variation, the portion of the slot 23 punched by the third punch 351 is the portion between adjacent front ends 22t remaining as allowance in the first punching region P1, and a portion further outward than the front ends 22t. In other words, in this variation, the portion of the slot 23 punched by the third punch 351 is the portion formed by the first punch 141 (see reference 141) in the portion forming the stator core member 20. Figure 5A ) and the first punch 151 (refer to Figure 8A The portion that differs from the portion of the metal plate 2. In order to punch the metal plate 2 in this way, the third punch 351, viewed from above, has a plurality of protrusions spaced at intervals of slots 23. The protruding portions of the third punch 351 correspond to the portions recessed towards the slot 23 from the portion corresponding to the inner circumferential contour of the stator core member 20. In the portion of the metal plate 2 punched by the third punch 351 of this modified example, the portions between adjacent front ends 22t and the portions along the inner circumferential contour of the stator core member 20 are not separated fragments, but rather become integral fragments. A portion of the remaining metal plate 2 after being punched by the third punch 351 is the portion punched by the third punch 341 (see reference 341) in the third punching area P3 of the first embodiment described above. Figure 5C The remaining metal plate 2 after a portion is punched is the same shape.

[0071] As described above, the slot punch 346 of this modified example used in the slot die disposed in the fourth punching area P4 (refer to...) Figure 8D )and Figure 5D The slot punch 346 shown is the same. Additionally, as described above, the fourth punch 441 of this modified example used in the fourth die disposed in the fifth punching area P5 (see reference...) Figure 8E )and Figure 5E The fourth punch 441 shown is the same. Therefore, in this modified example, all the slots 23 that form part of the stator core component 20 are punched in the fourth punching region P4 by the slot die 345, and the outer peripheral contour of the part that forms part of the stator core component 20 is punched in the fifth punching region P5 by the fourth die 440. The shape of the remaining metal plate 2 after a portion of it is punched in the fourth punching region P4 and the shape of the stator core component 20 punched in the fifth punching region P5 are the same as in the first embodiment described above.

[0072] If the above-mentioned having Figures 8A to 8E The manufacturing apparatus shown manufactures the rotor core component 10 and the stator core component 20. Therefore, the portion of the metal plate 2 punched by the third punch 351 in the third punching area P3 does not become fragmented pieces, but rather becomes a single, integral piece, thus suppressing material skipping. Here, material skipping refers to the phenomenon where the punched portion of the metal plate 2 does not remain inside the die, but rather comes out of the die along with the punch that has been pulled out of the die.

[0073] In the above description, in the first punching area P1, the outline of part that becomes groove 23 and the outline of part that becomes recess 13 are punched, but it is also possible to punch the entire outline of part that becomes recess 13 and the entire outline of part that becomes groove 23. In other words, in Figure 7 In the flowchart shown, process (S4) and process (S1) can be performed simultaneously. In this case, the first punch 141 and the first die 142 of the first mold 140 can be configured to punch the entire outline of the portion that becomes the recess 13 and the entire portion that becomes the groove 23, and the groove mold 345 can be omitted.

[0074] In the above description, the number of recesses 13 in the rotor core member 10 (e.g., 4) is less than the number of slots 23 in the stator core member 20 (e.g., 8). However, recesses 13 can also be formed at the positions of each slot 23 so that the number of recesses 13 is the same as the number of slots 23.

[0075] In the above description, the partitioning structure in the rotor core component is the recess 13 of the non-locking rotor core component 10. However, it is also possible to provide an outwardly protruding protrusion at an appropriate position on the outer periphery of the locking rotor core component, so that the outer periphery of the non-locking rotor core component is formed into a circle without protrusions or concavities. In this case, the locking protrusion 85 can be omitted from the downstream portion 82 of the extrusion section, and the inner peripheral surface of the downstream portion 82 of the extrusion section can be formed into a circle without protrusions or concavities, and a recess can be provided on the inner peripheral surface of the upstream portion 81 of the extrusion section, such as accommodating the aforementioned protrusion of the locking rotor core component (i.e., not interfering with the protrusion). However, considering that the rotor core, which is formed by stacking rotor core components, rotates inside the stator core, which is formed by stacking stator core components, it is preferable to provide the partitioning structure in the rotor core component as the recess 13.

[0076] In the above embodiments, processor refers to processor in a broad sense, including general-purpose processors (e.g., CPU: Central Processing Unit, etc.) and special-purpose processors (e.g., GPU: Graphics Processing Unit, ASIC: Application Specific Integrated Circuit, FPGA: Field Programmable Gate Array, programmable logic device, etc.).

[0077] Furthermore, the actions of the processor in the above embodiments can be performed not only by a single processor, but also collaboratively by multiple processors located in physically separate positions. Additionally, the order of the processor's actions is not limited to the order described in the above embodiments and can be appropriately modified.

[0078] Furthermore, the aforementioned program can be provided by computer-readable non-transitory recording media such as USB (Universal Serial Bus) memory, floppy disk, and CD-ROM (Compact Disc Read Only Memory), or it can be provided online via a network such as the Internet. In this case, the program recorded on the computer-readable non-transitory recording medium is typically transferred and stored in a memory or storage device. Additionally, the program can be provided as standalone application software or embedded as a function of the device's software.

[0079] The program of this application can be provided as a program product. A program product includes products used in all ways to provide the program. For example, program products include programs provided via networks such as the Internet, and non-transitory computer-readable recording media such as CD-ROMs and DVDs for storing the program.

[0080] In addition, this disclosure is not limited to the above-described embodiments, and various modifications and implementations can be made without departing from the spirit of this disclosure. Furthermore, all of these are encompassed within the technical concept of this disclosure.

[0081] All documents cited in this specification, including publications, patent applications and granted patents, are incorporated herein by reference to the extent that each document is individually and specifically shown to be incorporated by reference, or whose entire contents are set forth in the disclosure.

[0082] The use of nouns and similar indicator words in connection with the description of the invention (particularly with the claims) should be interpreted as encompassing both single and multiple terms, unless otherwise stated in this specification or obviously contradicted by the context. The terms “possessing,” “having,” “comprising,” and “including” should be interpreted as open-ended terms (i.e., “including, but not limited to…”) unless otherwise stated in this specification. Specific descriptions of numerical ranges in this specification are intended only as a way of abbreviating the values ​​corresponding to individual values ​​within that range, and each value is incorporated into the specification as if individually listed therein. All methods described in this specification can be performed in all suitable orders, unless otherwise stated in this specification or obviously contradicted by the context. All wording of examples or illustrations (e.g., “etc.”) used in this specification are intended only to better illustrate the disclosure and not to set a limitation on the scope of the disclosure. No wording in the specification should be construed as representing an element not recited in the claims as indispensable to the implementation of the disclosure.

[0083] In this specification, preferred embodiments of the invention are described, including those known to the inventors for carrying out the invention. Variations of these preferred embodiments will be apparent to those skilled in the art upon reading the above description. The inventors expect those skilled in the art to appropriately apply such variations and intend to carry out the invention by methods other than those specifically described in this specification. Therefore, the invention includes, in a manner permitted by applicable law, all modifications and equivalents of the contents of the appended claims. Moreover, unless otherwise stated in this specification or the context clearly contradicts it, any combination of the foregoing elements in all variations is also included in the invention.

Claims

1. A method for manufacturing a core component, wherein, Two types of core components are disclosed: a rotor core component having recesses or protrusions for separation on its outer periphery, and a stator core component having multiple teeth formed on its inner periphery. The manufacturing method of these core components includes: For the metal plate, the outline of at least a portion of a slot between adjacent teeth of the stator core component and the portion of a partition recess or protrusion of the rotor core component is used as a hole, and a punching process is performed using a first die. The process of forming the rotor core component by punching the outer periphery of the portion that becomes the rotor core component using a second die on the metal plate that has been punched using the first die. The process of punching at least the inner circumferential contour of the portion that becomes the stator core component using a third die on the metal plate after the rotor core component has been punched. as well as The process of forming the stator core component by punching the outer periphery of the portion that becomes the stator core component using a fourth die on the metal plate that has been punched using the third die.

2. The method for manufacturing the core component according to claim 1, wherein, The first die is configured to punch the contour of the portion that forms part of the slot and the portion that forms the partition of the rotor core component, either the recess or the protrusion. Before punching the metal plate using the fourth die, there is a step of punching the entire portion that forms the groove using the fifth die.

3. The method for manufacturing the core component according to claim 1 or 2, wherein, The first die is configured to punch the contour of the portion that forms part of the slot and the portion that forms the partition of the rotor core component, either the recess or the protrusion. The third mold is configured to punch out at least a portion of the groove and the inner circumferential contour of the stator core component as a single piece.

4. The method for manufacturing the core component according to any one of claims 1 to 3, wherein, The stator core component includes a circular magnetic yoke. The tooth has: an extension extending from the inner circumferential surface of the yoke toward the center of the yoke; and a front end portion extending circumferentially from the front end of the extension on the side of the center of the yoke. The first mold is configured such that the hole is formed between the teeth over the entire area of ​​the front end portion in the radial direction of the yoke.

5. A device for manufacturing iron core components, wherein, An apparatus for manufacturing two types of core components: a rotor core component having a recessed or protruding portion for separation on its outer periphery, and a stator core component having multiple teeth formed on its inner periphery. The apparatus comprises: Handling mechanism for moving metal sheets; A first die punches a hole in the metal plate, the hole forming at least a portion of a slot between adjacent teeth of the stator core member and the outline of a partition recess or protrusion of the rotor core member. The second mold forms the outer peripheral contour of the part that becomes the rotor core component; The third mold forms at least the inner circumferential contour of the part that becomes part of the stator core component; The fourth mold forms the outer peripheral contour of the part that becomes the stator core component; as well as The stamping machine causes the first mold, the second mold, the third mold, and the fourth mold to move.

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