JPH02299440A - Spindle motor - Google Patents
Spindle motorInfo
- Publication number
- JPH02299440A JPH02299440A JP11830889A JP11830889A JPH02299440A JP H02299440 A JPH02299440 A JP H02299440A JP 11830889 A JP11830889 A JP 11830889A JP 11830889 A JP11830889 A JP 11830889A JP H02299440 A JPH02299440 A JP H02299440A
- Authority
- JP
- Japan
- Prior art keywords
- cooled
- oil mist
- frame
- cooling water
- rotor
- 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.)
- Pending
Links
- 239000003595 mist Substances 0.000 claims abstract description 14
- 239000000498 cooling water Substances 0.000 claims abstract description 10
- 230000006866 deterioration Effects 0.000 abstract 2
- 230000001050 lubricating effect Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241000555745 Sciuridae Species 0.000 description 1
Landscapes
- Motor Or Generator Frames (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は高回転精度を必要とするスピンドル用モータ
において、運転時の発生熱による各部の寸法精度の低下
およびこれに伴う回転精度の低下を減らすことができる
ようにしたものに関する。[Detailed Description of the Invention] [Industrial Application Field] This invention solves the problem of reducing the dimensional accuracy of various parts due to the heat generated during operation and the accompanying reduction in rotational accuracy in spindle motors that require high rotational accuracy. Regarding things that can be reduced.
スピンドル用モータでは、−1113にかご形回転子を
使用し、運転に伴う温度上昇を抑制するために機内に冷
却風を送り込んだりフレーム、回転軸等に冷却風または
冷却水を通して冷却するようにしていた。For spindle motors, -1113 uses a squirrel-cage rotor, and in order to suppress temperature rises during operation, cooling air is sent into the machine, and cooling air or cooling water is passed through the frame, rotating shaft, etc. to cool the motor. Ta.
前記構造では回転子電流による発生熱で回転子の温度が
上昇して各部に温度こう配が生じ、これにより例えば取
付は面や回転軸端部の寸法精度が低下して回転精度の低
下することがあるという欠点があった。In the above structure, the temperature of the rotor rises due to the heat generated by the rotor current, creating a temperature gradient in each part, which may cause, for example, a decrease in the dimensional accuracy of the mounting surface or the end of the rotating shaft, resulting in a decrease in rotation accuracy. There was a drawback.
この発明は前記の欠点を除去するために、運転時の発生
熱による各部の寸法精度の低下およびこれに伴う回転精
度の低下を減らすことができるようにしたスピンドル用
モータを提供することを目的とする。In order to eliminate the above-mentioned drawbacks, it is an object of the present invention to provide a spindle motor that can reduce the reduction in dimensional accuracy of each part due to heat generated during operation and the accompanying reduction in rotational accuracy. do.
この発明は前記の目的を達成するために、円筒状の永久
磁石付き回転子1を嵌着した回転軸2をオイルミスト潤
滑軸受3.4で支持し、機内をオイルミストの混じった
空気を通して冷却するとともに、フレーム5を冷却水を
通して冷却するようにしたものである。In order to achieve the above object, this invention supports a rotating shaft 2 on which a cylindrical permanent magnet rotor 1 is fitted with an oil mist lubricated bearing 3.4, and cools the inside of the machine by passing air mixed with oil mist. At the same time, the frame 5 is cooled by passing cooling water.
前記永久磁石付き回転子1は従来の技術で説明したかご
形回転子のように電流による発生熱を住じないので各部
の温度こう配が小さく、さらに機内をオイルミストの混
じった空気でまたフレーム5を冷却水でそれぞれ効果的
に冷却するようにしたので、前記温度こう配をほとんど
なくして各部の寸法精度の低下およびこれに伴う回転精
度の低下を減らすことができる。Unlike the squirrel-cage rotor described in the prior art, the rotor 1 with permanent magnets does not generate heat due to electric current, so the temperature gradient in each part is small. Since each of the parts is effectively cooled with cooling water, the temperature gradient can be almost eliminated, thereby reducing the decrease in dimensional accuracy of each part and the accompanying decrease in rotation accuracy.
第1図はこの発明の実施例を示すもので、永久磁石6を
埋設してなる円筒状の回転子1を嵌着した回転軸2が4
段および2段に回転精度を出して組み合わせした組み合
わせ軸受3と4を介してコ字形断面のフレーム5および
その先端面に取付けた円板状ブラケット7のそれぞれ中
心部に支持されている。前記軸受3と4はオイルミスト
で潤滑され、このオイルミストはフレーム5およびブラ
ケット7に外周部から径方向に設けた給油路8と9を通
して供給される。軸受3,4を潤滑した前記オイルミス
トは空気に混じった状態でP矢印で示すように機内を通
ってこれを冷却した後フレーム5に設けた径方向の排油
路10から排出される。FIG. 1 shows an embodiment of the present invention, in which a rotating shaft 2 is fitted with a cylindrical rotor 1 having permanent magnets 6 embedded therein.
It is supported at the center of a frame 5 having a U-shaped cross section and a disc-shaped bracket 7 attached to the tip end surface of the frame 5 through combination bearings 3 and 4, which are combined in stages and two stages to provide rotational precision. The bearings 3 and 4 are lubricated with oil mist, and this oil mist is supplied to the frame 5 and bracket 7 through oil supply passages 8 and 9 provided in the radial direction from the outer periphery. The oil mist that has lubricated the bearings 3 and 4 passes through the interior of the machine as shown by the arrow P while being mixed with air, cools it down, and then is discharged from a radial oil drain path 10 provided in the frame 5.
前記フレーム5の内周には回転子1を包囲する固定子1
1が嵌着され、この固定子11、軸受3およびフレーム
5はフレーム5を貫通して設けた通水路12に冷却水を
通すことにより冷却される。A stator 1 surrounding the rotor 1 is disposed on the inner periphery of the frame 5.
1 is fitted, and the stator 11, bearing 3, and frame 5 are cooled by passing cooling water through a water passage 12 provided through the frame 5.
前記通水路12はブラケット7の外側面外周部から軸方
向にフレーム5を通した後軸受3および固定子11のそ
れぞれ外周付近に形成した環状通水路12aと12bを
通って通水できるようになっている。Water can pass through the water passage 12 through the frame 5 in the axial direction from the outer periphery of the outer surface of the bracket 7, and then through annular water passages 12a and 12b formed near the outer peripheries of the bearing 3 and stator 11, respectively. ing.
前記実施例によれば永久磁石付き回転子1は従来の技術
で説明したかご形回転子のように電流による発生熱を生
じないので各部の温度こう配が小さく、さらに機内をオ
イルミストの混じった空気でまた熱源である固定子11
と軸受3およびフレーム5を冷却水でそれぞれ効果的に
冷却するようにしたので、前記温度こう配をほとんどな
くして各部の寸法精度の低下を減らすことかできる。例
えば第2図に示す実験装置でモータ13の取付は面に対
する回転軸2の先端部の振れ変化量を測定した実験結果
によれば第3図に示すように実施例によるものAが従来
の技術で説明したちのBより大幅に減っていることがわ
かる。According to the embodiment, the rotor 1 with permanent magnets does not generate heat due to electric current unlike the squirrel cage rotor described in the prior art, so the temperature gradient in each part is small, and furthermore, the rotor 1 with permanent magnets does not generate heat due to electric current, and the temperature gradient in each part is small. The stator 11 is also a heat source.
Since the bearing 3 and the frame 5 are each effectively cooled with cooling water, the temperature gradients mentioned above can be almost eliminated and the decrease in dimensional accuracy of each part can be reduced. For example, in the experimental apparatus shown in FIG. 2, the mounting of the motor 13 is based on the experimental results of measuring the amount of change in deflection of the tip of the rotating shaft 2 with respect to the surface.As shown in FIG. It can be seen that the number is significantly reduced compared to B, which was explained in .
前記実施例では軸受3,4が4段および2段の組み合わ
せ軸受の場合について説明したが、これらに限定される
ものではない。In the embodiment described above, a case has been described in which the bearings 3 and 4 are a combination of four-stage and two-stage bearings, but the present invention is not limited thereto.
この発明によればスピンドル用モータにおいて、永久磁
石付き回転子を嵌着した回転軸をオイルミスト潤滑軸受
で支持し、機内をオイルミストの混じった空気を通して
冷却するとともに、フレームを冷却水を通して冷却する
ようにしたので、運転時の発生熱による各部の温度こう
配をほとんどな(して寸法精度の低下およびこれに伴う
回転精度の低下を減らすことができるという効果が得ら
れる。According to this invention, in a spindle motor, a rotating shaft fitted with a permanent magnet rotor is supported by an oil mist lubricated bearing, and the inside of the machine is cooled by passing air mixed with oil mist, and the frame is cooled by passing cooling water. As a result, temperature gradients in various parts due to heat generated during operation can be almost eliminated (thus reducing the decrease in dimensional accuracy and the accompanying decrease in rotational accuracy).
第1図はこの発明の実施例の縦断面図、第2図は第1図
のモータの回転精度測定実験装置の概略構成図、第3図
は第1図のモータの回転精度測定値を示す曲線図である
。
1・・・回転子、2・・・回転軸、3,4・・・軸受、
5・・・フレーム、6・・・永久磁石、13・・・モー
タ。
第2図
→J転転量間H)
第3図Fig. 1 is a longitudinal cross-sectional view of an embodiment of the present invention, Fig. 2 is a schematic configuration diagram of an experimental apparatus for measuring rotational accuracy of the motor shown in Fig. 1, and Fig. 3 shows measured values of rotational accuracy of the motor shown in Fig. 1. It is a curve diagram. 1... Rotor, 2... Rotating shaft, 3, 4... Bearing,
5... Frame, 6... Permanent magnet, 13... Motor. Figure 2 → J rotation amount H) Figure 3
Claims (1)
イルミスト潤滑軸受で支持し、機内をオイルミストの混
じった空気を通して冷却するとともに、フレームを冷却
水を通して冷却したことを特徴とするスピンドル用モー
タ。1) A rotating shaft fitted with a cylindrical permanent magnet rotor is supported by an oil mist lubricated bearing, and the inside of the machine is cooled by passing air mixed with oil mist, and the frame is cooled by passing cooling water. Spindle motor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11830889A JPH02299440A (en) | 1989-05-11 | 1989-05-11 | Spindle motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11830889A JPH02299440A (en) | 1989-05-11 | 1989-05-11 | Spindle motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02299440A true JPH02299440A (en) | 1990-12-11 |
Family
ID=14733468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11830889A Pending JPH02299440A (en) | 1989-05-11 | 1989-05-11 | Spindle motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02299440A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100243966B1 (en) * | 1995-06-20 | 2000-02-01 | 가나이 쓰도무 | Rotary electric mechanism and motor vehicle |
KR100242152B1 (en) * | 1996-12-03 | 2000-11-01 | 에릭 발리베 | Water cooling type permanent-magnet generator |
KR20040025081A (en) * | 2002-09-18 | 2004-03-24 | 한국전기초자 주식회사 | A spindle motor |
CN102447350A (en) * | 2006-07-10 | 2012-05-09 | 爱德华兹有限公司 | Motor |
EP2684280A1 (en) | 2011-03-09 | 2014-01-15 | Stridsberg Innovation Ab | Cooled magnet motor |
WO2018139497A1 (en) * | 2017-01-25 | 2018-08-02 | 株式会社Ihi | Electric compressor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4958303A (en) * | 1972-07-31 | 1974-06-06 |
-
1989
- 1989-05-11 JP JP11830889A patent/JPH02299440A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4958303A (en) * | 1972-07-31 | 1974-06-06 |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100243966B1 (en) * | 1995-06-20 | 2000-02-01 | 가나이 쓰도무 | Rotary electric mechanism and motor vehicle |
KR100242152B1 (en) * | 1996-12-03 | 2000-11-01 | 에릭 발리베 | Water cooling type permanent-magnet generator |
KR20040025081A (en) * | 2002-09-18 | 2004-03-24 | 한국전기초자 주식회사 | A spindle motor |
CN102447350A (en) * | 2006-07-10 | 2012-05-09 | 爱德华兹有限公司 | Motor |
CN102447350B (en) * | 2006-07-10 | 2015-09-09 | 爱德华兹有限公司 | Motor |
EP2684280A1 (en) | 2011-03-09 | 2014-01-15 | Stridsberg Innovation Ab | Cooled magnet motor |
WO2018139497A1 (en) * | 2017-01-25 | 2018-08-02 | 株式会社Ihi | Electric compressor |
CN109563846A (en) * | 2017-01-25 | 2019-04-02 | 株式会社Ihi | Motor compressor |
JPWO2018139497A1 (en) * | 2017-01-25 | 2019-11-07 | 株式会社Ihi | Electric compressor |
US10941788B2 (en) | 2017-01-25 | 2021-03-09 | Ihi Corporation | Electric compressor |
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