JP2022047156A - Rotor of rotary electric machine and manufacturing method thereof - Google Patents

Rotor of rotary electric machine and manufacturing method thereof Download PDF

Info

Publication number
JP2022047156A
JP2022047156A JP2020152904A JP2020152904A JP2022047156A JP 2022047156 A JP2022047156 A JP 2022047156A JP 2020152904 A JP2020152904 A JP 2020152904A JP 2020152904 A JP2020152904 A JP 2020152904A JP 2022047156 A JP2022047156 A JP 2022047156A
Authority
JP
Japan
Prior art keywords
steel plate
insulating
rotor
plate group
iron core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2020152904A
Other languages
Japanese (ja)
Other versions
JP7488157B2 (en
Inventor
雅一 伊藤
Masakazu Ito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Industrial Products and Systems Corp
Original Assignee
Toshiba Industrial Products and Systems Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Industrial Products and Systems Corp filed Critical Toshiba Industrial Products and Systems Corp
Priority to JP2020152904A priority Critical patent/JP7488157B2/en
Publication of JP2022047156A publication Critical patent/JP2022047156A/en
Application granted granted Critical
Publication of JP7488157B2 publication Critical patent/JP7488157B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Induction Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

To provide a rotor of a rotary electric machine and a manufacturing method thereof that makes it easy to adjust the number of steel plates without causing a decrease in electrical efficiency.SOLUTION: A rotor 10 includes an insulating steel plate group 11 and an untreated steel plate 12. In the insulating steel plate group 11, one or more steel plates 14 are laminated and subjected to insulating treatment. The untreated steel plate 12 constitutes an iron core 13 together with the insulating steel plate group 11, is provided on at least one end side of the insulating steel plate group 11, and is not subjected to the insulating treatment.SELECTED DRAWING: Figure 1

Description

本実施形態は、回転電機の回転子、回転子の製造方法に関する。 The present embodiment relates to a rotor of a rotary electric machine and a method for manufacturing the rotor.

従来、いわゆるかご形誘導電動機のような回転電機の回転子は、鉄心となる鋼板を積層した鋼板群に、導電材料であるアルミニウムや銅などをダイカストまたは溶湯鍛造することにより形成されている。この場合、導電材料と鋼板群の鋼板とが短絡すると、漏れ電流が生じ、回転電機の効率の低下を招く。そこで、鋼板群は、例えば絶縁皮膜や絶縁層を形成するなど絶縁処理が施されている（例えば、特許文献１参照）。
しかしながら、絶縁処理が施された絶縁鋼板群は、後続するダイカスト工程において、電気的な効率の向上のために軸方向の全長の調整が必要となる場合がある。この場合、絶縁鋼板群は、絶縁処理が施されていることから、積層状態の鋼板の枚数の調整が困難であるという問題がある。 Conventionally, a rotor of a rotary electric machine such as a so-called squirrel-cage induction motor is formed by die-casting or molten metal forging a conductive material such as aluminum or copper on a steel plate group in which steel plates serving as iron cores are laminated. In this case, if the conductive material and the steel plate of the steel plate group are short-circuited, a leakage current is generated, which causes a decrease in the efficiency of the rotary electric machine. Therefore, the steel sheet group is subjected to an insulating treatment such as forming an insulating film or an insulating layer (see, for example, Patent Document 1).
However, in the subsequent die casting process, it may be necessary to adjust the total length in the axial direction of the insulated steel sheet group that has been subjected to the insulation treatment in order to improve the electrical efficiency. In this case, since the insulated steel sheet group is subjected to the insulating treatment, there is a problem that it is difficult to adjust the number of the steel sheets in the laminated state.

特開平８－３１７６１６号公報Japanese Unexamined Patent Publication No. 8-317616

そこで、電気的な効率の低下を招くことなく、鋼板群の枚数の調整が容易な回転電機の回転子および回転子の製造方法を提供することを目的とする。 Therefore, it is an object of the present invention to provide a rotor and a method for manufacturing a rotor of a rotary electric machine, which can easily adjust the number of steel plates without causing a decrease in electrical efficiency.

本実施形態の回転電機の回転子は、１枚以上の鋼板が積層され、絶縁処理が施されている絶縁鋼板群と、前記絶縁鋼板群とともに鉄心を構成し、前記絶縁鋼板群の少なくとも一方の端部側に設けられ、絶縁処理が施されていない１枚以上の未処理鋼板と、を備える。
また、本実施形態の回転子の製造方法は、積層された１枚以上の鋼板に絶縁処理を施して一体の絶縁鋼板群に加工する工程と、前記絶縁鋼板群の少なくとも一方の端部側に、絶縁処理が施されていない未処理鋼板を１枚以上追加する工程と、前記未処理鋼板が追加された前記絶縁鋼板群を鉄心として、導体でダイカスト加工する工程と、を含む。 The rotor of the rotary electric machine of the present embodiment constitutes an iron core together with an insulating steel plate group in which one or more steel plates are laminated and subjected to insulation treatment, and the insulating steel plate group, and at least one of the insulating steel plate groups. It is provided with one or more untreated steel sheets provided on the end side and not subjected to insulation treatment.
Further, the method for manufacturing a rotor of the present embodiment includes a step of insulating one or more laminated steel sheets to form an integral insulating steel sheet group, and a step of processing at least one end side of the insulating steel sheet group. It includes a step of adding one or more untreated steel sheets that have not been subjected to insulation treatment, and a step of die-casting with a conductor using the insulating steel sheet group to which the untreated steel sheets have been added as an iron core.

一実施形態による回転子の鉄心を示す模式図Schematic diagram showing the iron core of the rotor according to one embodiment 一実施形態による固定子の鉄心において、絶縁鋼板群を示す模式的な部分断面図Schematic partial cross-sectional view showing a group of insulated steel plates in the iron core of the stator according to one embodiment. 一実施形態による固定子の鉄心の要部を、図２の矢印III方向から見た模式図Schematic diagram of the main part of the iron core of the stator according to one embodiment as viewed from the direction of arrow III in FIG. 一実施形態による固定子の鉄心を型に収容した状態を示す模式的な断面図Schematic cross-sectional view showing a state in which the iron core of the stator according to one embodiment is housed in a mold.

以下、一実施形態について図面に基づいて説明する。
図１に示すように、本実施形態の回転電機の回転子１０は、絶縁鋼板群１１および未処理鋼板１２を備えている。これら絶縁鋼板群１１および未処理鋼板１２は、回転子１０の鉄心１３を構成している。絶縁鋼板群１１は、図２に示すように例えば電磁鋼板などからなる１枚以上の鋼板１４が積層されている。絶縁鋼板群１１は、各鋼板１４に形成されているスロット１５を有している。スロット１５は、回転子１０の軸方向において、絶縁鋼板群１１を軸方向へ貫いている。すなわち、絶縁鋼板群１１を構成する鋼板１４は、スロット１５となる開口を有している。そして、鋼板１４を積層して絶縁鋼板群１１を構成することにより、積層された鋼板１４を軸方向へ貫くスロット１５が形成される。 Hereinafter, one embodiment will be described with reference to the drawings.
As shown in FIG. 1, the rotor 10 of the rotary electric machine of the present embodiment includes an insulating steel plate group 11 and an untreated steel plate 12. The insulating steel plate group 11 and the untreated steel plate 12 constitute the iron core 13 of the rotor 10. As shown in FIG. 2, in the insulating steel plate group 11, one or more steel plates 14 made of, for example, an electromagnetic steel plate are laminated. The insulating steel plate group 11 has a slot 15 formed in each steel plate 14. The slot 15 penetrates the insulating steel plate group 11 in the axial direction in the axial direction of the rotor 10. That is, the steel plate 14 constituting the insulating steel plate group 11 has an opening that becomes a slot 15. Then, by laminating the steel plates 14 to form the insulating steel plate group 11, a slot 15 that penetrates the laminated steel plates 14 in the axial direction is formed.

回転子１０は、図２および図３に示すようにスロット１５の内部に設けられている導体１６を備えている。導体１６は、絶縁鋼板群１１を軸方向へ貫くスロット１５の内側に充填されている。回転子１０は、絶縁皮膜１７を備えている。絶縁皮膜１７は、スロット１５を形成する鋼板１４の内側となる面に設けられている。すなわち、導体１６は、絶縁皮膜１７を挟んでスロット１５に収容されている。これにより、絶縁鋼板群１１を構成する鋼板１４と導体１６との間は、絶縁皮膜１７によって絶縁されている。導体１６は、例えばアルミニウムや銅などの導電材料をダイカストによりスロット１５へ鋳込むことによりスロット１５の内側に設けられる。導体は、金属の単体に限らず、導電性の合金であってもよい。また、導体１６は、ダイカストに限らず、例えば溶湯鍛造によって設けてもよい。さらに、鋼板１４は、自己融着電磁鋼板であってもよい。 The rotor 10 includes a conductor 16 provided inside the slot 15 as shown in FIGS. 2 and 3. The conductor 16 is filled inside a slot 15 that penetrates the insulating steel plate group 11 in the axial direction. The rotor 10 includes an insulating film 17. The insulating film 17 is provided on the inner surface of the steel plate 14 forming the slot 15. That is, the conductor 16 is housed in the slot 15 with the insulating film 17 interposed therebetween. As a result, the steel plate 14 constituting the insulating steel plate group 11 and the conductor 16 are insulated by the insulating film 17. The conductor 16 is provided inside the slot 15 by casting a conductive material such as aluminum or copper into the slot 15 by die casting. The conductor is not limited to a simple substance of metal, but may be a conductive alloy. Further, the conductor 16 is not limited to die casting, and may be provided by, for example, molten metal forging. Further, the steel plate 14 may be a self-bonding electromagnetic steel plate.

絶縁鋼板群１１は、例えばプレスなどによって所定の形状に打ち抜かれた鋼板１４を積層することによって構成される。鋼板１４は、スロット１５や図示しない回転軸部材が設けられる穴部１８などを有している。積層された鋼板１４は、少なくともスロット１５を形成する内壁に絶縁皮膜１７が形成される。絶縁皮膜１７は、例えばいわゆるチラノワニスなどで形成されている。絶縁皮膜１７となるチラノワニスは、チタンセラミックス樹脂系塗料をシンナーなどで希釈したものである。この希釈された処理液は、積層された鋼板１４のスロット１５に対応する位置に充填される。そして、充填されたチラノワニスを焼き付けなどによって乾燥させることにより、スロット１５を形成する鋼板１４の内壁には絶縁皮膜１７が形成される。この絶縁皮膜１７は、概ね数μｍ程度の厚みでスロット１５を形成する内壁面に概ね均一に形成される。 The insulating steel plate group 11 is formed by laminating steel plates 14 punched into a predetermined shape by, for example, pressing. The steel plate 14 has a slot 15 and a hole 18 in which a rotary shaft member (not shown) is provided. In the laminated steel plate 14, the insulating film 17 is formed on the inner wall forming at least the slot 15. The insulating film 17 is formed of, for example, so-called Tyranovanis. The chillano varnish serving as the insulating film 17 is obtained by diluting a titanium ceramic resin-based paint with thinner or the like. This diluted treatment liquid is filled in the position corresponding to the slot 15 of the laminated steel plate 14. Then, by drying the filled chillano varnish by baking or the like, an insulating film 17 is formed on the inner wall of the steel plate 14 forming the slot 15. The insulating film 17 is formed substantially uniformly on the inner wall surface forming the slot 15 with a thickness of about several μm.

未処理鋼板１２は、回転子１０の軸方向において、図１に示すように絶縁鋼板群１１の少なくとも一方の端部側に設けられている。未処理鋼板１２は、回転子１０の軸方向における鉄心１３の全長を調整するために設けられる。絶縁鋼板群１１と未処理鋼板１２とによって構成される回転子１０の鉄心１３は、後続するダイカストや溶湯鋳造の工程において、導体１６が設けられる。この導体１６を形成する工程では、鉄心１３は導体１６の注入のために、図４に示すように所定の形状の型２０に収容される。このとき、型２０に収容される鉄心１３は、寸法の調整のために、回転子１０の軸方向において予め設定された全長である設定全長に調整する必要がある。例えば、型２０は、回転子１０の軸方向の両端にそれぞれ取り付けられる上型２１および下型２２を有している。そして、この上型２１と下型２２との間の距離は、鉄心１３の設定全長に規定される。上型２１と下型２２との間に収容された鉄心１３は、スロット１５に導体１６が形成される。 The untreated steel plate 12 is provided on at least one end side of the insulating steel plate group 11 as shown in FIG. 1 in the axial direction of the rotor 10. The untreated steel plate 12 is provided to adjust the total length of the iron core 13 in the axial direction of the rotor 10. The iron core 13 of the rotor 10 composed of the insulating steel plate group 11 and the untreated steel plate 12 is provided with a conductor 16 in the subsequent die casting or molten metal casting process. In the step of forming the conductor 16, the iron core 13 is housed in a mold 20 having a predetermined shape as shown in FIG. 4 for injecting the conductor 16. At this time, the iron core 13 housed in the mold 20 needs to be adjusted to a set total length which is a preset total length in the axial direction of the rotor 10 in order to adjust the dimensions. For example, the mold 20 has an upper mold 21 and a lower mold 22 attached to both ends of the rotor 10 in the axial direction, respectively. The distance between the upper die 21 and the lower die 22 is defined by the set total length of the iron core 13. A conductor 16 is formed in the slot 15 of the iron core 13 accommodated between the upper mold 21 and the lower mold 22.

仮に絶縁鋼板群１１の全長が鉄心１３の設定全長よりも大きいとき、設定全長とするには絶縁鋼板群１１から積層された鋼板１４を除去する処理が必要となる。しかし、絶縁鋼板群１１は、導体１６を形成する前処理である絶縁処理の工程において、積層された複数の鋼板１４のスロット１５に一体的に絶縁皮膜１７が形成されている。そのため、絶縁皮膜１７が形成された絶縁鋼板群１１からこれを構成する鋼板１４を除去することは困難であるとともに、鋼板１４を除去したとしても絶縁皮膜１７の再形成など煩雑な工程を必要とする。そこで、本実施形態では、絶縁鋼板群１１を構成する鋼板１４の枚数を調整することにより、回転子１０の軸方向における絶縁鋼板群１１の全長を鉄心１３の設定全長よりもやや小さく設定する。そして、絶縁鋼板群１１の軸方向の端部に未処理鋼板１２を追加することにより、この未処理鋼板１２によって鉄心１３の全長を設定全長に調整する。 If the total length of the insulating steel plate group 11 is larger than the set total length of the iron core 13, it is necessary to remove the laminated steel plates 14 from the insulating steel plate group 11 in order to achieve the set total length. However, in the insulating steel plate group 11, the insulating film 17 is integrally formed in the slots 15 of the plurality of laminated steel plates 14 in the step of the insulating treatment which is the pretreatment for forming the conductor 16. Therefore, it is difficult to remove the steel plate 14 constituting the insulating steel plate group 11 on which the insulating film 17 is formed, and even if the steel plate 14 is removed, a complicated process such as reforming the insulating film 17 is required. do. Therefore, in the present embodiment, the total length of the insulating steel plate group 11 in the axial direction of the rotor 10 is set to be slightly smaller than the set total length of the iron core 13 by adjusting the number of steel plates 14 constituting the insulating steel plate group 11. Then, by adding the untreated steel plate 12 to the axial end of the insulating steel plate group 11, the total length of the iron core 13 is adjusted to the set total length by the untreated steel plate 12.

未処理鋼板１２は、絶縁鋼板群１１を構成する鋼板１４と同一の形状または厚みであってもよいし、調整のために簡略化された形状または厚みであってもよい。このように、本実施形態では、回転子１０の鉄心１３は、積層された鋼板１４のスロット１５となる開口に絶縁皮膜１７が形成されている絶縁鋼板群１１と、絶縁皮膜１７のない未処理鋼板１２とによって構成されている。この場合、鉄心１３は、数十枚～数百枚程度の鋼板１４で構成される絶縁鋼板群１１に、多くても数枚程度の未処理鋼板１２が追加されるにすぎない。本実施形態の場合、絶縁鋼板群１１を構成する鋼板１４は、約１００枚程度である。また、未処理鋼板１２の厚みは、数ｍｍ程度である。そのため、追加された未処理鋼板１２は、回転子１０の電気的な特性にほとんど影響を及ぼさない。 The untreated steel plate 12 may have the same shape or thickness as the steel plates 14 constituting the insulating steel plate group 11, or may have a simplified shape or thickness for adjustment. As described above, in the present embodiment, the iron core 13 of the rotor 10 has the insulating steel plate group 11 in which the insulating film 17 is formed in the opening serving as the slot 15 of the laminated steel plates 14, and the untreated steel plate group 17 without the insulating film 17. It is composed of a steel plate 12. In this case, in the iron core 13, only a few untreated steel plates 12 are added to the insulating steel plate group 11 composed of tens to hundreds of steel plates 14. In the case of this embodiment, the number of steel plates 14 constituting the insulating steel plate group 11 is about 100. The thickness of the untreated steel sheet 12 is about several mm. Therefore, the added untreated steel sheet 12 has almost no effect on the electrical characteristics of the rotor 10.

次に、上記の構成による回転子１０の製造方法について説明する。
絶縁鋼板群１１を構成する鋼板１４は、軸方向の全長が予め設定された設定全長よりもわずかに小さくなるように所定の枚数が積層される。鋼板１４は、スロット１５に対応する開口および回転軸部材が貫く穴部１８などが予め形成されている。積層された鋼板１４は、絶縁処理として絶縁皮膜１７が形成される。絶縁皮膜１７は、例えばチラノワニスなどによって形成される。これにより、積層された鋼板１４は、少なくともスロット１５に対応する位置の内壁に絶縁皮膜１７が一体に形成された絶縁鋼板群１１となる。 Next, a method of manufacturing the rotor 10 according to the above configuration will be described.
A predetermined number of steel plates 14 constituting the insulating steel plate group 11 are laminated so that the total length in the axial direction is slightly smaller than the preset total length. The steel plate 14 is preformed with an opening corresponding to the slot 15 and a hole 18 through which the rotary shaft member penetrates. An insulating film 17 is formed on the laminated steel sheets 14 as an insulating treatment. The insulating film 17 is formed of, for example, Tyranovanis. As a result, the laminated steel plate 14 becomes the insulating steel plate group 11 in which the insulating film 17 is integrally formed on the inner wall at the position corresponding to at least the slot 15.

絶縁鋼板群１１は、上述のようにその全長が設定全長よりもわずかに小さく設定されている。そこで、絶縁鋼板群１１は、軸方向において少なくとも一方の端部側に未処理鋼板１２が追加される。未処理鋼板１２を追加することにより、絶縁鋼板群１１および未処理鋼板１２で構成される鉄心１３は軸方向の全長が予め設定された設定全長に調整される。 As described above, the total length of the insulating steel plate group 11 is set to be slightly smaller than the set total length. Therefore, in the insulating steel plate group 11, the untreated steel plate 12 is added to at least one end side in the axial direction. By adding the untreated steel plate 12, the total length in the axial direction of the iron core 13 composed of the insulating steel plate group 11 and the untreated steel plate 12 is adjusted to a preset total length.

絶縁鋼板群１１に未処理鋼板１２が追加されることにより設定全長に調整された鉄心１３は、図４に示すように所定の型２０に収容される。そして、型２０に収容された鉄心１３は、絶縁鋼板群１１と未処理鋼板１２とが一体となってダイカスト加工によってスロット１５に対応する位置に導体１６が形成される。導体１６は、例えば銅やアルミニウムなどの導電性の金属や導電性の合金によって形成される。 The iron core 13 adjusted to the set total length by adding the untreated steel plate 12 to the insulating steel plate group 11 is housed in a predetermined mold 20 as shown in FIG. Then, in the iron core 13 housed in the mold 20, the insulating steel plate group 11 and the untreated steel plate 12 are integrally formed, and the conductor 16 is formed at a position corresponding to the slot 15 by die casting. The conductor 16 is formed of a conductive metal such as copper or aluminum or a conductive alloy.

以上説明した回転電機の回転子１０は、絶縁鋼板群１１および未処理鋼板１２で鉄心１３が構成されている。絶縁鋼板群１１は、軸方向における全長が、ダイカストなどにより導体１６を形成する工程において鉄心１３に要求される設定全長よりもわずかに小さく設定されている。そのため、鉄心１３は、絶縁鋼板群１１の一方の端部に未処理鋼板１２を追加することにより、設定全長に調整される。すなわち、鉄心１３は、絶縁皮膜１７が形成された絶縁鋼板群１１に、未処理鋼板１２を追加することにより、その軸方向の全長が設定全長に調整される。そのため、絶縁皮膜１７の形成によって一体となった絶縁鋼板群１１は、設定全長への調整のために、積層された鋼板１４を除去したり、絶縁皮膜１７を再形成したりする必要がない。したがって、鉄心１３の全長の調整のために鋼板群の枚数の調整を容易にすることができる。 In the rotor 10 of the rotary electric machine described above, the iron core 13 is composed of the insulating steel plate group 11 and the untreated steel plate 12. The total length of the insulating steel plate group 11 in the axial direction is set to be slightly smaller than the set total length required for the iron core 13 in the process of forming the conductor 16 by die casting or the like. Therefore, the iron core 13 is adjusted to the set total length by adding the untreated steel plate 12 to one end of the insulating steel plate group 11. That is, the total length of the iron core 13 in the axial direction is adjusted to the set total length by adding the untreated steel plate 12 to the insulating steel plate group 11 on which the insulating film 17 is formed. Therefore, the insulating steel plate group 11 integrated by the formation of the insulating film 17 does not need to remove the laminated steel plates 14 or reform the insulating film 17 in order to adjust to the set total length. Therefore, it is possible to easily adjust the number of steel plates for adjusting the total length of the iron core 13.

また、一実施形態では、絶縁鋼板群１１を構成する１００枚以上の鋼板１４に対して、追加される未処理鋼板１２は多くても数枚である。そのため、未処理鋼板１２に絶縁処理が施されていなくても、漏れ電流は無視できる程度に小さい。したがって、電気的な特性の変化や効率の低下を招くことなく、鉄心１３の全長の調整を容易にすることができる。 Further, in one embodiment, the number of untreated steel plates 12 added is at most several to the 100 or more steel plates 14 constituting the insulating steel plate group 11. Therefore, even if the untreated steel sheet 12 is not insulated, the leakage current is so small that it can be ignored. Therefore, it is possible to easily adjust the total length of the iron core 13 without causing a change in electrical characteristics or a decrease in efficiency.

一実施形態による回転子１０の製造方法では、鉄心１３は、ダイカスト加工を実施する工程の前に、絶縁鋼板群１１に未処理鋼板１２を追加することによって、設定全長が調整される。すなわち、鉄心１３の設定全長は、未処理鋼板１２を追加するという工程によって調整される。したがって、導体１６のダイカスト加工を実施する前の工程において、鉄心１３の全長の調整のための処理を簡略化することができる。 In the method for manufacturing the rotor 10 according to one embodiment, the set total length of the iron core 13 is adjusted by adding the untreated steel plate 12 to the insulating steel plate group 11 before the step of performing die casting. That is, the set total length of the iron core 13 is adjusted by the process of adding the untreated steel plate 12. Therefore, in the step before die-casting the conductor 16, the process for adjusting the total length of the iron core 13 can be simplified.

以上、本発明の複数の実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれるとともに、特許請求の範囲に記載された発明とその均等の範囲に含まれる。 Although a plurality of embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

図面中、１０は回転子、１１は絶縁鋼板群、１２は未処理鋼板、１３は鉄心、１４は鋼板、１６は導体を示す。 In the drawings, 10 is a rotor, 11 is an insulating steel plate group, 12 is an untreated steel plate, 13 is an iron core, 14 is a steel plate, and 16 is a conductor.

Claims (4)

１枚以上の鋼板が積層され、絶縁処理が施されている絶縁鋼板群と、
前記絶縁鋼板群とともに鉄心を構成し、前記絶縁鋼板群の少なくとも一方の端部側に設けられ、絶縁処理が施されていない１枚以上の未処理鋼板と、
を備える回転電機の回転子。 A group of insulated steel sheets in which one or more steel sheets are laminated and insulated.
One or more untreated steel sheets which form an iron core together with the insulating steel sheet group and are provided on at least one end side of the insulating steel sheet group and are not subjected to insulation treatment, and
Rotor of a rotary electric machine equipped with. 前記絶縁鋼板群は、積層された前記鋼板が一体になって絶縁処理されている請求項１記載の回転電機の回転子。 The rotor of the rotary electric machine according to claim 1, wherein the insulating steel plate group is the rotor of the rotary electric machine according to claim 1, wherein the laminated steel plates are integrally insulated. 前記絶縁鋼板群は、チラノワニスによって一体に絶縁皮膜が形成されている請求項２記載の回転電機の回転子。 The rotor of the rotary electric machine according to claim 2, wherein the insulating steel plate group is integrally formed with an insulating film by Tyranovanis. 積層された１枚以上の鋼板に絶縁処理を施して一体の絶縁鋼板群に加工する工程と、
前記絶縁鋼板群の少なくとも一方の端部側に、絶縁処理が施されていない未処理鋼板を１枚以上追加する工程と、
前記未処理鋼板が追加された前記絶縁鋼板群を鉄心として、導体でダイカスト加工する工程と、
を含む回転子の製造方法。 The process of insulating one or more laminated steel sheets and processing them into an integrated group of insulated steel sheets.
A step of adding one or more untreated steel sheets that have not been subjected to insulation treatment to at least one end side of the insulating steel sheet group.
A process of die-casting with a conductor using the insulating steel plate group to which the untreated steel plate is added as an iron core.
A method for manufacturing a rotor including.
JP2020152904A 2020-09-11 2020-09-11 Rotor of rotating electric machine and method of manufacturing the rotor Active JP7488157B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020152904A JP7488157B2 (en) 2020-09-11 2020-09-11 Rotor of rotating electric machine and method of manufacturing the rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2020152904A JP7488157B2 (en) 2020-09-11 2020-09-11 Rotor of rotating electric machine and method of manufacturing the rotor

Publications (2)

Publication Number Publication Date
JP2022047156A true JP2022047156A (en) 2022-03-24
JP7488157B2 JP7488157B2 (en) 2024-05-21

Family

ID=80780200

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020152904A Active JP7488157B2 (en) 2020-09-11 2020-09-11 Rotor of rotating electric machine and method of manufacturing the rotor

Country Status (1)

Country Link
JP (1) JP7488157B2 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004104853A (en) 2002-09-05 2004-04-02 Toyota Motor Corp Motor
JP2004364368A (en) 2003-06-03 2004-12-24 Toyota Motor Corp Switched reluctance motor
JP2015023680A (en) 2013-07-19 2015-02-02 三菱電機株式会社 Permanent magnet type motor

Also Published As

Publication number Publication date
JP7488157B2 (en) 2024-05-21

Similar Documents

Publication Publication Date Title
RU2011135079A (en) SHORT-CLOSED ROTOR
JP7241289B2 (en) Manufacturing method of rotor core and manufacturing method of rotor
US11165310B2 (en) Stator for a rotating electric machine having dielectric regions for a winding head board
JP5843980B2 (en) Method for manufacturing cage rotor and method for manufacturing induction motor
WO2018062003A1 (en) Method for producing laminated core
US20210028675A1 (en) Method for producing a squirrel-cage rotor
US3783317A (en) Dynamoelectric machine rotor
CN111903037B (en) Rotor of induction motor and induction motor
JP2022047156A (en) Rotor of rotary electric machine and manufacturing method thereof
JP6324015B2 (en) Manufacturing method of rotating electrical machine
JP2018026930A (en) Lamination iron core and manufacturing method for the same
US10199894B2 (en) Rotor of electric motor
JP2001057748A (en) Method for manufacturing motor and motor core
JP7274893B2 (en) Manufacturing method of rotary electric machine
JP2023550736A (en) Method of manufacturing a material layer having at least one void
KR102220618B1 (en) Hybrid induction motor rotor and motor using the same
US1915115A (en) Method of manufacture of squirrel cage rotor
KR20220156761A (en) Stator of an electric machine, method for producing same and electric machine
KR100434289B1 (en) rotor of squirrel cage induction motor
JP6017990B2 (en) Stator for rotating electrical machine
JP6435924B2 (en) Rotor for induction motor and method for manufacturing the same
JP2014079042A (en) Rotary electric machine and manufacturing method therefor
WO2022085235A1 (en) Rotating electric machine and method for manufacturing rotating electric machine
JPH05316699A (en) Manufacture of cage shaped rotor
US10992192B2 (en) Stator core or a rotor core for an electrical machine with reduced eddy current losses and high magnetic conductivity and mechanical strength

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20230706

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20240130

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20240206

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20240402

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20240416

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20240509