JPH08242549A - Rotor integrated with permanent magnet and its manufacture - Google Patents
Rotor integrated with permanent magnet and its manufactureInfo
- Publication number
- JPH08242549A JPH08242549A JP7041730A JP4173095A JPH08242549A JP H08242549 A JPH08242549 A JP H08242549A JP 7041730 A JP7041730 A JP 7041730A JP 4173095 A JP4173095 A JP 4173095A JP H08242549 A JPH08242549 A JP H08242549A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- shaft
- wire
- rotor
- strength
- 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.)
- Withdrawn
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 17
- 238000004804 winding Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 12
- 238000005266 casting Methods 0.000 abstract description 3
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 230000006378 damage Effects 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 229910000679 solder Inorganic materials 0.000 description 4
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 229910000737 Duralumin Inorganic materials 0.000 description 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、回転子磁極を永久磁石
とした永久磁石一体化構造回転子及びその製造方法に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a permanent magnet integrated structure rotor in which rotor magnetic poles are permanent magnets and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】回転子磁極を永久磁石とする場合の回転
子構造は、発生する磁界の方向によりラジアル（半径方
向）ギャップ方式とアキシャル（軸方向）ギャップ方式
の２種類に分けられる。2. Description of the Related Art A rotor structure in which a rotor magnetic pole is a permanent magnet is classified into two types, a radial (radial direction) gap type and an axial (axial direction) gap type, depending on the direction of a magnetic field generated.
【０００３】アキシャルギャップ方式の回転機について
は、数多くの特許出願がなされている。例えば、株式会
社東芝から特開平６−３８４１８号、特開平５−２６８
７５４号、ロールスロイスからち特開平２−７４１４２
号などがある。A number of patent applications have been filed for the rotating machine of the axial gap type. For example, from Toshiba Corporation, JP-A-6-38418 and JP-A-5-268.
No. 754, Rolls-Royce paper
There are issues, etc.
【０００４】これらのタイプは、何れも円盤上の回転子
に永久磁石を埋め込む形で構成されている。これらアキ
シャルギャップ方式の特徴は、磁気的なエアギャップが
小さくでき、効率の向上が図られるということが挙げら
れる。Each of these types is constructed by embedding a permanent magnet in a rotor on a disk. A characteristic of these axial gap systems is that the magnetic air gap can be made small and the efficiency can be improved.
【０００５】[0005]
【発明が解決しようとする課題】アキシャルギャップ方
式を採用する目的は、回転子の構造部がそのまま永久磁
石の保持機構となっている為、従来は低速用として用い
られているアキシャルギャップでも高速回転により生じ
る過大な遠心応力に対して、回転子からの永久磁石の脱
落を防止できるためである。The purpose of adopting the axial gap method is to rotate at a high speed even with an axial gap which has been conventionally used for a low speed because the structure of the rotor serves as a permanent magnet holding mechanism. This is because it is possible to prevent the permanent magnet from falling off from the rotor against the excessive centrifugal stress caused by.
【０００６】また、アキシャルギャップ方式は、回転子
部分の直径が大きくなるため、高速回転による遠心力を
考慮すれば、回転子材料はできるだけ軽量かつ強度が高
い、即ち、比強度の高い材料であることが望まれる。従
って、アルミニウム又はアルミニウム合金が用いられ
る。Further, in the axial gap method, since the diameter of the rotor portion is large, the rotor material is as light and strong as possible, that is, a material having a high specific strength, in consideration of centrifugal force due to high speed rotation. Is desired. Therefore, aluminum or aluminum alloy is used.
【０００７】ここで問題となるのは、アルミニウム及び
アルミニウム合金の強度からは、許容できる回転数に限
りがある点である。例えば、アルミニウム合金のうち、
高強度材として用いられるものの一つとして、超ジュラ
ルミン（ＪＩＳＡ２０２４）があるが、この引張強さは
約４７０Ｍｐａであり、高速回転体の構造材料として
は、十分な強度があるとは言えない。The problem here is that the allowable number of revolutions is limited due to the strength of aluminum and aluminum alloys. For example, among aluminum alloys,
One of the materials used as a high-strength material is super duralumin (JIS A2024), which has a tensile strength of about 470 Mpa and cannot be said to have sufficient strength as a structural material for a high-speed rotating body.
【０００８】更に、永久磁石の埋設についても、アキシ
ャルギャップ方式では、軸方向の吸引力などで振動が生
じるので、永久磁石の保持を確実に行う必要がある。本
発明は、上記従来技術に鑑みてなされたものであり、界
磁極に永久磁石を有する同期電動機において、遠心力に
耐えて永久磁石を保持し、回転子材料の破壊を防止する
ことのできる永久磁石一体化構造回転子及びその製造方
法を提供することを目的とする。Further, with respect to the embedding of the permanent magnet as well, in the axial gap method, vibration is generated due to the attraction force in the axial direction and the like, so that it is necessary to securely hold the permanent magnet. The present invention has been made in view of the above-mentioned conventional art, and in a synchronous motor having a permanent magnet in a field pole, it is possible to withstand the centrifugal force, hold the permanent magnet, and prevent the rotor material from being broken. An object is to provide a magnet-integrated structure rotor and a manufacturing method thereof.
【０００９】[0009]
【課題を解決するための手段】上記課題を解決する本発
明の永久磁石一体化構造回転子の製造方法は、永久磁石
をシャフトの周囲に配置すると共に該永久磁石及びシャ
フトに絡めるように高強度の細線を巻き付けて固定する
ことを特徴とし、更には、前記永久磁石、シャフト及び
高強度の細線の間にアルミニウム合金を鋳込むことによ
り固定するを特徴とする。A method of manufacturing a rotor with a permanent magnet integrated structure according to the present invention, which solves the above problems, has a high strength so that a permanent magnet is arranged around a shaft and entangled with the permanent magnet and the shaft. It is characterized by winding and fixing the thin wire, and further, it is characterized in that it is fixed by casting an aluminum alloy between the permanent magnet, the shaft and the high-strength thin wire.
【００１０】上記課題を解決する本発明の永久磁石一体
化構造回転子は、永久磁石がシャフトの周囲に配置され
ると共に該永久磁石及びシャフトに絡めるように高強度
の細線が巻き付けられ、且つ、前記永久磁石、シャフト
及び高強度の細線がアルミニウム合金中に埋め込まれた
ことを特徴とする。In the permanent magnet integrated structure rotor of the present invention for solving the above-mentioned problems, the permanent magnet is arranged around the shaft, and a high-strength fine wire is wound so as to be entwined with the permanent magnet and the shaft, and The permanent magnet, the shaft, and the high-strength thin wire are embedded in an aluminum alloy.
【００１１】[0011]
【作用】本発明によれば、高強度の細線を用いて永久磁
石をバイントすることで、永久磁石が遠心力によって回
転子から脱落することを防ぐことができる。つまり、永
久磁石の保持と、回転子材料そのものの遠心力による破
壊を防ぐことが可能となる。更に、アルミニウム合金を
高強度の細線と接合する形をとることで、強化繊維複合
材料と同様に、アルミニウム合金の強度を高めることが
可能となる。この結果、永久磁石と回転子との接合が容
易に実現でき、また、回転子の高速化、軽量化が可能と
なる。According to the present invention, since the permanent magnet is bent by using the high-strength thin wire, it is possible to prevent the permanent magnet from falling off the rotor due to the centrifugal force. That is, it becomes possible to hold the permanent magnets and prevent the rotor material itself from being destroyed by the centrifugal force. Furthermore, by taking the form of joining the aluminum alloy with the high-strength fine wire, it becomes possible to increase the strength of the aluminum alloy as in the case of the reinforced fiber composite material. As a result, the permanent magnet and the rotor can be easily joined, and the speed and weight of the rotor can be increased.
【００１２】[0012]
【実施例】以下、本発明について、図面に示す実施例を
参照して詳細に説明する。本発明の第１の実施例を図１
〜図３に示す。本実施例は、アキシャルギャップ方式の
回転子を製造する方法に関する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the drawings. FIG. 1 shows a first embodiment of the present invention.
~ Shown in FIG. The present embodiment relates to a method of manufacturing an axial gap type rotor.
【００１３】先ず、図１に示すように、円板１の中央に
シャフト２を配置すると共にこのシャフト２の周囲に複
数の永久磁石３を配置する。円板１は、図２に示すよう
に、その中央にシャフト２を挿入するための軸穴１ａが
貫通すると共に、その軸穴１ａの周囲には円柱状の永久
磁石３を保持するための永久磁石受け穴（底あり）１ｂ
が複数配置されている。円板１としては、アルミ半田と
反応しないもの、例えば、セラミックスを用いる。First, as shown in FIG. 1, a shaft 2 is arranged in the center of a disc 1 and a plurality of permanent magnets 3 are arranged around the shaft 2. As shown in FIG. 2, the disc 1 has a shaft hole 1a through which the shaft 2 is inserted at its center, and a permanent magnet for holding a cylindrical permanent magnet 3 around the shaft hole 1a. Magnet receiving hole (with bottom) 1b
Are arranged. As the disc 1, one that does not react with aluminum solder, for example, ceramics is used.
【００１４】次に、図１に示すように、シャフト２と永
久磁石３とをワイヤー４により絡めるように巻き付け
る。ワイヤー４には、弛みが起こらない程度に、適当な
張力、例えば、１ｋｇｆの張力を付与する。ワイヤー４
の巻き付けは、均等に巻くようにし、徐々に上方向に巻
く位置を移動する。Next, as shown in FIG. 1, the shaft 2 and the permanent magnet 3 are wound so as to be entwined with the wire 4. Appropriate tension, for example, tension of 1 kgf, is applied to the wire 4 to the extent that slack does not occur. Wire 4
When winding, the winding should be done evenly, and the winding position should be gradually moved upward.
【００１５】具体的には、図１に示すように、支柱５に
自在アーム６，６を連結して水平面内で旋回自在とする
と共にこの自在アーム６の先端に上下調整具７を介して
ワイヤー繰り出しガイド８を上下方向に取り付ける。ワ
イヤ繰り出しガイド８は非磁性で、ねじが外周に形成さ
れたパイプ状のものである。従って、このワイヤ繰り出
しガイド８を上下調整具７にねじ込む位置を調節するこ
とにより、上下方向の高さが調整される。More specifically, as shown in FIG. 1, the free arms 6, 6 are connected to the support column 5 so as to be rotatable in a horizontal plane, and a wire is provided at the tip of the free arm 6 via an up-down adjuster 7. The feeding guide 8 is attached in the vertical direction. The wire feeding guide 8 is non-magnetic and has a pipe shape with a screw formed on the outer circumference. Therefore, the height in the vertical direction is adjusted by adjusting the position where the wire feeding guide 8 is screwed into the vertical adjusting tool 7.
【００１６】このワイヤー繰り出しガイド８の上端には
ワイヤ供給装置９からワイヤー４が連続して供給され、
この為、ワイヤー繰り出しガイド８の下端から繰り出し
たワイヤー４がシャフト２と永久磁石３との間に巻き付
いて行く。ここで、ワイヤー４としては、例えば、株式
会社神戸製鋼所、商品名：サイファーを用いる。このサ
イファーは反応性を良くするような表面処理が必要とな
る。The wire 4 is continuously supplied from the wire supplying device 9 to the upper end of the wire feeding guide 8.
Therefore, the wire 4 fed from the lower end of the wire feeding guide 8 is wound around the shaft 2 and the permanent magnet 3. Here, as the wire 4, for example, Kobe Steel, Ltd., trade name: Cipher is used. This cipher requires a surface treatment to improve its reactivity.
【００１７】ワイヤー４の巻き付けが完了したことろ
で、永久磁石３及びワイヤー４の巻き付け部にアルミ半
田をコーティングする。ワイヤー４、永久磁石３及びシ
ャフト２には、アルミ半田が良く反応するようにフラッ
クスを全体に塗布する。このとき用いる半田材として
は、例えば、株式会社日本アルミット製、商品名：ＦＡ
５を用い、フラックスとしては、例えば、株式会社日本
アルミット製、商品名：ＳＤＧを用いる。After the winding of the wire 4 is completed, the winding portion of the permanent magnet 3 and the wire 4 is coated with aluminum solder. A flux is applied to the wire 4, the permanent magnet 3, and the shaft 2 so that the aluminum solder reacts well. The solder material used at this time is, for example, manufactured by Nippon Aluminum Corporation, trade name: FA
5 is used, and as the flux, for example, SDG manufactured by Nippon Aluminum Co., Ltd. is used.
【００１８】引き続き、図３に示すように、ワイヤー４
を巻き付けたシャフト２及び永久磁石３を、筒１０内に
嵌め込み、同図中矢印で示すように、永久磁石３と永久
磁石３の間の空間にアルミ合金を溶かし込む。筒１０と
しては、円板１と同材質を用いる。全体が冷却した後、
円板１及び筒１０を外し、回転子両端部を削り、回転子
の製造が完了する。Subsequently, as shown in FIG.
The shaft 2 and the permanent magnet 3 wound with are fitted into the cylinder 10, and an aluminum alloy is melted into the space between the permanent magnets 3 as shown by the arrow in the figure. The cylinder 10 is made of the same material as the disc 1. After the whole has cooled
The disk 1 and the cylinder 10 are removed, both ends of the rotor are shaved, and the production of the rotor is completed.
【００１９】上述した本実施例では、高強度の細線であ
るワイヤー４により、シャフト２に対して永久磁石３を
絡みつけるように巻き付けてバイントするため、遠心力
により永久磁石３が回転子から脱落することを防止する
ことができる。即ち、ワイヤー４として用いられるサイ
ファーの引張強さは、σB＝３９００〜５３００ＭＰａ
であり、かなり高い引張強さを有している。従って、高
速回転により生じる遠心力で、回転子が半径方向に膨張
するが、永久磁石３は高強度のワイヤー４により固定さ
れており、永久磁石３に対しては圧縮応力が作用する。In the above-described embodiment, since the permanent magnet 3 is wound around the shaft 2 so as to be entwined with the wire 4 which is a high-strength thin wire, the permanent magnet 3 is dropped from the rotor by centrifugal force. Can be prevented. That is, the tensile strength of the cipher used as the wire 4 is σ B = 3900 to 5300 MPa.
And has a considerably high tensile strength. Therefore, the rotor is expanded in the radial direction by the centrifugal force generated by the high-speed rotation, but the permanent magnet 3 is fixed by the high-strength wire 4, and a compressive stress acts on the permanent magnet 3.
【００２０】このように、サイファーを用いて永久磁石
３を固定することで、永久磁石３の保持と共に回転子材
料そのものの、遠心力による破壊を防ぐ効果を有するこ
とにもなる。また、永久磁石３が遠心力に対して耐えら
れるように、ワイヤー４の巻き数を決めれば、高い回転
数を要する回転子の場合には、その回転数に合わせて製
造時に巻き数を増やせば良い。By thus fixing the permanent magnet 3 by using the cipher, the permanent magnet 3 can be held and the rotor material itself can be prevented from being destroyed by centrifugal force. Further, if the number of turns of the wire 4 is determined so that the permanent magnet 3 can withstand the centrifugal force, in the case of a rotor that requires a high number of turns, the number of turns can be increased at the time of manufacture in accordance with the number of turns. good.
【００２１】更に、アルミニウム合金中に、永久磁石３
が埋め込まれる構造を採ることで、高速回転により回転
子の温度が上昇しても、アルミニウム合金の熱膨張係数
は永久磁石３に対して高いので、永久磁石３には圧縮応
力が作用することになる。特に、アルミニウム合金とワ
イヤー４が一体化されることで、強化繊維複合材料と同
様な効果を持つため、見掛け上高強度材料を用いること
と同じ効果を有することが可能となる。Furthermore, in the aluminum alloy, the permanent magnet 3
Since the coefficient of thermal expansion of the aluminum alloy is higher than that of the permanent magnet 3 even if the temperature of the rotor rises due to the high speed rotation, the compressive stress acts on the permanent magnet 3 by adopting a structure in which the permanent magnet 3 is embedded. Become. In particular, since the aluminum alloy and the wire 4 are integrated, the same effect as that of the reinforced fiber composite material can be obtained, so that it is possible to have the same effect as using the apparently high strength material.
【００２２】[0022]
【発明の効果】以上、実施例に基づいて具体的に説明し
たように、本発明によれば、高強度の細線を用いて永久
磁石をバイントすることで、永久磁石が遠心力によって
回転子から脱落することを防ぐことができ、更に、アル
ミニウム合金を高強度の細線と接合する形をとることで
アルミニウム合金の強度を高めることが可能となる。こ
の結果、永久磁石と回転子との接合が容易に実現でき、
また、回転子の高速化、軽量化が可能となる。As described above in detail with reference to the embodiments, according to the present invention, the permanent magnet is bent from the rotor by the centrifugal force by using the high-strength fine wire to bind the permanent magnet. It is possible to prevent the aluminum alloy from falling off, and it is possible to increase the strength of the aluminum alloy by joining the aluminum alloy with the high-strength fine wire. As a result, the permanent magnet and the rotor can be easily joined,
Also, the speed and weight of the rotor can be reduced.
【図１】本発明の第１の実施例に係り、シャフト及び永
久磁石にワイヤーを巻き付ける様子を示す工程図であ
る。FIG. 1 is a process diagram showing how a wire is wound around a shaft and a permanent magnet according to a first embodiment of the present invention.
【図２】本発明の第１の実施例に係り、円板を示す説明
図である。FIG. 2 is an explanatory diagram showing a disk according to the first embodiment of the present invention.
【図３】アルミニウムを鋳込む様子を示す説明図であ
る。FIG. 3 is an explanatory view showing a state of casting aluminum.
１ 円板 ２ シャフト ３ 永久磁石 ４ ワイヤー ５ 支柱 ６ 自在アーム ７ 上下調整具 ８ ワイヤー繰り出しガイド ９ ワイヤ供給装置 1 Disc 2 Shaft 3 Permanent Magnet 4 Wire 5 Support 6 Flexible Arm 7 Vertical Adjuster 8 Wire Feeding Guide 9 Wire Supply Device
Claims (3)
共に該永久磁石及びシャフトに絡めるように高強度の細
線を巻き付けて固定することを特徴とする永久磁石一体
化構造回転子の製造方法。1. A method of manufacturing a permanent magnet integrated structure rotor, comprising: arranging a permanent magnet around a shaft, and winding and fixing a high-strength thin wire so as to entangle the permanent magnet and the shaft.
共に該永久磁石及びシャフトに絡めるように高強度の細
線を巻き付けた後、前記永久磁石、シャフト及び高強度
の細線の間にアルミニウム合金を鋳込むことにより固定
するを特徴とする永久磁石一体化構造回転子の製造方
法。2. A permanent magnet is arranged around a shaft, and a high-strength thin wire is wound around the shaft so that the permanent magnet and the shaft are entwined with each other, and an aluminum alloy is cast between the permanent magnet, the shaft and the high-strength thin wire. A method for manufacturing a permanent magnet integrated structure rotor characterized by being fixed by being inserted.
と共に該永久磁石及びシャフトに絡めるように高強度の
細線が巻き付けられ、且つ、前記永久磁石、シャフト及
び高強度の細線がアルミニウム合金中に埋め込まれたこ
とを特徴とする永久磁石一体化構造回転子。3. A permanent magnet is arranged around a shaft, and a high-strength thin wire is wound around the permanent magnet and the shaft so as to be entwined with the permanent magnet, the shaft, and the high-strength thin wire in an aluminum alloy. Permanent magnet integrated structure rotor characterized by being embedded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7041730A JPH08242549A (en) | 1995-03-01 | 1995-03-01 | Rotor integrated with permanent magnet and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7041730A JPH08242549A (en) | 1995-03-01 | 1995-03-01 | Rotor integrated with permanent magnet and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08242549A true JPH08242549A (en) | 1996-09-17 |
Family
ID=12616549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7041730A Withdrawn JPH08242549A (en) | 1995-03-01 | 1995-03-01 | Rotor integrated with permanent magnet and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08242549A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0854558A2 (en) * | 1997-01-21 | 1998-07-22 | Isuzu Ceramics Research Institute Co., Ltd. | Structure of a rotor for generators and method of manufacturing the same rotor |
-
1995
- 1995-03-01 JP JP7041730A patent/JPH08242549A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0854558A2 (en) * | 1997-01-21 | 1998-07-22 | Isuzu Ceramics Research Institute Co., Ltd. | Structure of a rotor for generators and method of manufacturing the same rotor |
| EP0854558A3 (en) * | 1997-01-21 | 2000-07-12 | Isuzu Ceramics Research Institute Co., Ltd. | Structure of a rotor for generators and method of manufacturing the same rotor |
| US6144130A (en) * | 1997-01-21 | 2000-11-07 | Isuzu Ceramics Research Institute Co., Ltd. | Structure of rotor for generators and method of manufacturing the same rotor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6633106B1 (en) | Axial gap motor-generator for high speed operation | |
| US4724348A (en) | Rotatable assembly for dynamoelectric machines having means for reducing release of magnet material particles therefrom | |
| US5619087A (en) | Axial-gap rotary-electric machine | |
| US6754042B1 (en) | Disk drive comprising a notched disk clamp for improved disk balance | |
| US4792712A (en) | Rotor having magnets with enclosing shells | |
| US4302693A (en) | Wedge shaped permanent magnet rotor assembly with magnet cushions | |
| US7825559B2 (en) | Rotating machine | |
| US20050264118A1 (en) | Conical bearingless motor/generator | |
| JPS6035939A (en) | Rotor and method of producing same | |
| US6700260B2 (en) | Rotor structure of motor | |
| JPH08242549A (en) | Rotor integrated with permanent magnet and its manufacture | |
| EP2789080A1 (en) | Method of producing a rotor of an electric machine and rotor of an electric machine | |
| FR2730288A1 (en) | ACTIVE-CONTROLLED VIBRATION REDUCTION DEVICES CONSISTING OF MOBILE MASSES EXCITED BY 2 OR 3-AXIS ELECTRO MAGNETS | |
| WO1996023986A9 (en) | Vibration damping devices with active control and comprising movable weights excited by electromagnets along 2 or 3 axes | |
| JPH10104544A (en) | Rotary polygon mirror motor | |
| JP3814173B2 (en) | Rotor manufacturing method | |
| JP7554727B2 (en) | Rotor, rotating electric machine, and method for manufacturing rotor | |
| JP2004040840A (en) | Flat motor | |
| JP2002005167A (en) | Magnetic bearing structure, and method of mounting it on rotating shaft | |
| JPS5941164A (en) | Motor | |
| JP2002349277A (en) | Bearing part oil film rigidity control device of turbocharger | |
| JPH11289697A (en) | Permanent magnet rotor | |
| TWI435396B (en) | Dual capillary icwirebonding | |
| JP2003314550A (en) | Magnetic bearing unit | |
| JP2005192385A (en) | Spindle motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020507 |