WO2023013129A1 - コア及びコアの生産方法 - Google Patents
コア及びコアの生産方法 Download PDFInfo
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- WO2023013129A1 WO2023013129A1 PCT/JP2022/009836 JP2022009836W WO2023013129A1 WO 2023013129 A1 WO2023013129 A1 WO 2023013129A1 JP 2022009836 W JP2022009836 W JP 2022009836W WO 2023013129 A1 WO2023013129 A1 WO 2023013129A1
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- Prior art keywords
- core
- linear material
- shape
- producing
- linear
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 44
- 239000000463 material Substances 0.000 claims abstract description 88
- 238000005520 cutting process Methods 0.000 claims abstract description 13
- 239000000696 magnetic material Substances 0.000 claims abstract description 12
- 238000005452 bending Methods 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 230000004907 flux Effects 0.000 claims description 5
- 238000005229 chemical vapour deposition Methods 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 27
- 238000010586 diagram Methods 0.000 description 18
- 238000000034 method Methods 0.000 description 12
- 238000005491 wire drawing Methods 0.000 description 7
- 238000004804 winding Methods 0.000 description 5
- 230000002500 effect on skin Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/06—Cores, Yokes, or armatures made from wires
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
- H01F41/0226—Manufacturing of magnetic circuits made from strip(s) or ribbon(s) from amorphous ribbons
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
Definitions
- the disclosed technology relates to cores and core production methods.
- Cores are parts used in motors, magnetic circuits, magnetic sensors, etc., and are used in various industries.
- the core also called an iron core, functions as a path for magnetic flux.
- the technology disclosed herein aims to provide a production method for cores that can be designed into various shapes.
- a method of producing a core according to the present disclosure is a method of producing a core that is used by arranging a plurality of cores in a ring, wherein a linear material that is a magnetic material is bent, formed into a design shape, and an excess of the linear material is formed. cutting off the excess if any.
- the core production method according to the disclosed technique includes the above steps, the core can be designed in various shapes.
- FIG. 1 is a flowchart showing processing steps of a core production method according to Embodiment 1.
- FIG. 2 is a schematic diagram showing an example of the shape of the core according to Embodiment 1.
- FIG. 3 is a schematic diagram showing an example of a design shape according to Embodiment 1.
- FIG. 4A is a schematic diagram 1 showing an example of forming the linear material 1 into a designed shape.
- FIG. 4B is a second schematic diagram showing an example of forming the linear material 1 into a designed shape.
- FIG. 4C is a schematic diagram 3 showing an example of forming the linear material 1 into a designed shape.
- FIG. 5 is a schematic diagram showing an example of forming linear materials 1 arranged in a plane into a designed shape.
- FIG. 6 is a schematic diagram showing an example of forming a three-dimensionally bundled linear material 1 into a designed shape.
- FIG. 7A is an example of a graph comparing the output voltages of a rotating device according to a conventional technology and a rotating device according to the technology of the present disclosure.
- FIG. 7B is an example of a graph comparing the impedances of the rotary device according to the conventional technology and the rotary device according to the technology of the present disclosure.
- FIG. 8 is a diagram for explaining the wire drawing process in the core production method according to the second embodiment.
- FIG. 9 is an explanatory diagram showing changes in the cross-sectional shape of the linear material 1 before and after the wire drawing process in the core production method according to the second embodiment.
- FIG. 1 is a flow chart showing processing steps of a core 2 production method according to the first embodiment.
- the method for producing the core 2 according to Embodiment 1 comprises a step (ST2) of bending the linear material 1, which is a magnetic material, a step (ST4) of forming it into a designed shape, and a step (ST4) of forming the linear material and a step (ST6) of cutting off the excess of 1.
- the linear material 1, which is a magnetic material, may contain silicon by CVD (Chemical Vapor Deposition).
- FIG. 2 is a schematic diagram showing an example of the shape of the core 2 according to Embodiment 1.
- FIG. FIG. 2 illustrates a case where the cross-sectional shape of the linear material 1 is square.
- the core 2 since the core 2 is formed by stacking the linear materials 1, it can be adapted to various shapes, and can be applied to rotating equipment such as high-output motors.
- FIG. 3 is a schematic diagram showing an example of the design shape according to Embodiment 1.
- FIG. The shape shown on the left side of FIG. 3 is the designed shape.
- FIG. 3 shows an example in which two cores 2 face each other and are joined together in an annular shape.
- a design shape is a shape that includes the shape of at least one core 2 .
- the right side of FIG. 3 shows an example in which two cores 2 are produced by cutting a linear material 1 bent into a design shape into two.
- the design shape shown in FIG. 3 is annular, the method of manufacturing the core 2 according to the disclosed technique is not limited to this.
- the design shape may be a plurality of cores 2 connected in series.
- the design shape includes the shapes of a plurality of cores 2, it is preferable that there is a so-called cutting margin (white space) between the cores 2 adjacent to each other.
- the linear material 1 is preferably stacked in the direction of the magnetic flux of the magnetic circuit in which the core 2 is incorporated.
- the bent linear material 1 In order for the bent linear material 1 to maintain its design shape, it is preferable that the bent linear material 1 be subjected to a treatment process for maintaining its shape.
- the processing steps for maintaining the shape may include thermocompression bonding such as self-bonding by heating, bonding with an adhesive, twisting a plurality of strands together, and pressure bonding by applying pressure.
- the linear material 1 When self-bonding is used for the treatment process for maintaining the shape, it is preferable to use a wire coated with enamel or the like as the linear material 1 . That is, in the case of self-bonding, the linear material 1 is preferably coated with a material for self-bonding.
- the step (ST6) of cutting the excess of the linear material 1 can also be said to be a step of cutting out the core shape on the right side of FIG. 3 from the design shape on the left side of FIG. 3, for example.
- cutting the excess is also included.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
図1は、実施の形態1に係るコア2の生産方法の処理工程を示すフローチャートである。図1に示されるとおり、実施の形態1に係るコア2の生産方法は、磁性材である線状材料1を折り曲げる工程(ST2)と、設計形状に形成する工程(ST4)と、線状材料1の余分を切断する工程(ST6)と、を含む。
磁性材である線状材料1を折り曲げる工程(ST2)と設計形状に形成する工程(ST4)とにおいて、線状材料1は、コア2が組み込まれる磁気回路の磁束の方向に重ねられるとよい。
図4Aは、より詳細には線状材料1をアルファ巻きにすることによって設計形状に形成する例を示したものである。コア2の形状が図3の右側に示されるような場合、設計形状に形成する工程(ST4)において、ワイヤをアルファ巻きにする巻き機などの既存の設備を流用することも考えられる。
図4Bは、より詳細には、線状材料1を複数のアルファ巻きにすることによって設計形状に形成する例を示したものである。
図4Cは、図4Bで得られた複数のアルファ巻きされた線状材料1を、重ねることによって設計形状に形成する例を示したものである。
渦電流の発生を抑制する目的で、従来から電磁鋼板を積層した積層コアも知られている。積層コアの場合、複雑な形状を実現するためには多くのプレス型が必要でコスト高であった。本開示技術に係るコア2の生産方法は線状材料1を用いるため、プレス型を多く準備する必要がなく、コスト高にならないという効果も奏する。また本開示技術に係るコア2の生産方法は線状材料1を用いるため、コイル巻き機等の既存の設備を流用することもできる。
図3の右側に示されたとおり、本開示技術に係る生産方法で生産されたコア2は、コア2が外部から絶縁される必要がない箇所で線状材料1が切断されている。
図7Aは、従来技術に係る回転機器と本開示技術に係る回転機器との出力電圧を比較したグラフの例である。図7Bは、従来技術に係る回転機器と本開示技術に係る回転機器とのインピーダンスを比較したグラフの例である。図7Aに示されるとおり本開示技術に係るコア2を用いた回転機器は、従来のコアを用いた回転機器と比較して、特に5~10[kHz]の周波数帯域において、出力電圧が大きい。また図7Bに示されるとおり本開示技術に係るコア2を用いた回転機器は、従来のコアを用いた回転機器と比較して、特に60[kHz]よりも高周波側の周波数帯域において、インピーダンスが大きい。
このように本開示技術に係るコア2の生産方法は様々な形状に対応できるため、モータ等の回転機器にも適用できる。
実施の形態2に係るコア2及びコア2の生産方法は、本開示技術に係るコア2及びコア2の生産方法の変形例である。
実施の形態2で用いる符号は、特に明記する場合を除き、実施の形態1で用いられたものと同じものが用いられる。実施の形態2では、実施の形態1と重複する説明が、適宜、省略される。
細い線状材料1でコア2を形成することは、コア2に占める線状材料1の表面積を増やすことになり、表皮効果が増えるという効果を奏する。表皮効果とは、交流電流が導体を流れるとき、電流密度が導体の表面で高く、表面から離れると低くなる現象のことである。
Claims (13)
- 複数を環状に配置して使用されるコアの生産方法であって、
磁性材である線状材料を折り曲げ、
設計形状に形成し、
前記線状材料の余分がある場合に当該余分を切断する、
コアの生産方法。 - 前記線状材料は被覆され、
加熱し自己融着させる工程をさらに含む、
請求項1に記載のコアの生産方法。 - 前記線状材料を、接着剤により接着させる工程をさらに含む、
請求項1に記載のコアの生産方法。 - CVD法で前記線状材料にシリコンを含有させる工程をさらに含む、
請求項1に記載のコアの生産方法。 - 前記設計形状は、複数のコアを含む形状である、
請求項1に記載のコアの生産方法。 - 前記設計形状への形成は、前記線状材料を、コアが組み込まれる磁気回路の磁束の方向に重ねる、
請求項1に記載のコアの生産方法。 - 前記線状材料の切断は、コアが外部から絶縁される必要がない箇所である、
請求項1に記載のコアの生産方法。 - 複数を環状に配置して使用されるコアであって、
磁性材である線状材料を折り曲げ、
設計形状に形成し、
前記線状材料の余分がある場合に当該余分を切断してなる、コア。 - 前記線状材料は被覆され、
加熱し自己融着してなる、請求項8に記載のコア。 - 前記線状材料を、接着剤により接着させてなる、請求項8に記載のコア。
- CVD法で前記線状材料にシリコンを含有させてなる、請求項8に記載のコア。
- 組み込まれる磁気回路の磁束の方向に前記線状材料を重ねてなる、請求項8に記載のコア。
- 外部から絶縁される必要がない箇所が、切断によりなる、請求項8に記載のコア。
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EP22852558.0A EP4383284A1 (en) | 2021-08-06 | 2022-03-08 | Core and method for producing core |
CN202280050437.9A CN117652006A (zh) | 2021-08-06 | 2022-03-08 | 铁芯和铁芯的生产方法 |
JP2023539622A JPWO2023013129A1 (ja) | 2021-08-06 | 2022-03-08 |
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JP (1) | JPWO2023013129A1 (ja) |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS3614311Y1 (ja) * | 1959-03-27 | 1961-06-02 | ||
JP2006060053A (ja) * | 2004-08-20 | 2006-03-02 | Yasuhiko Okubo | 鉄心 |
JP2008072070A (ja) * | 2006-09-11 | 2008-03-27 | Masashi Otsubo | 小形電源トランス |
JP2011239645A (ja) | 2010-05-13 | 2011-11-24 | Toyota Motor Corp | 可変リラクタンス型レゾルバおよびその製造方法 |
JP2018148119A (ja) | 2017-03-08 | 2018-09-20 | 株式会社神戸製鋼所 | イグニッションコイル用鉄心及びイグニッションコイル用鉄心の製造方法 |
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- 2022-03-08 JP JP2023539622A patent/JPWO2023013129A1/ja active Pending
- 2022-03-08 EP EP22852558.0A patent/EP4383284A1/en active Pending
- 2022-03-08 WO PCT/JP2022/009836 patent/WO2023013129A1/ja active Application Filing
- 2022-03-08 CN CN202280050437.9A patent/CN117652006A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS3614311Y1 (ja) * | 1959-03-27 | 1961-06-02 | ||
JP2006060053A (ja) * | 2004-08-20 | 2006-03-02 | Yasuhiko Okubo | 鉄心 |
JP2008072070A (ja) * | 2006-09-11 | 2008-03-27 | Masashi Otsubo | 小形電源トランス |
JP2011239645A (ja) | 2010-05-13 | 2011-11-24 | Toyota Motor Corp | 可変リラクタンス型レゾルバおよびその製造方法 |
JP2018148119A (ja) | 2017-03-08 | 2018-09-20 | 株式会社神戸製鋼所 | イグニッションコイル用鉄心及びイグニッションコイル用鉄心の製造方法 |
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CN117652006A (zh) | 2024-03-05 |
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