JPH0314280Y2 - - Google Patents
Info
- Publication number
- JPH0314280Y2 JPH0314280Y2 JP1984152041U JP15204184U JPH0314280Y2 JP H0314280 Y2 JPH0314280 Y2 JP H0314280Y2 JP 1984152041 U JP1984152041 U JP 1984152041U JP 15204184 U JP15204184 U JP 15204184U JP H0314280 Y2 JPH0314280 Y2 JP H0314280Y2
- Authority
- JP
- Japan
- Prior art keywords
- spindle
- cooling
- oil
- main shaft
- spindle head
- 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.)
- Expired
Links
- 238000001816 cooling Methods 0.000 claims description 40
- 239000003921 oil Substances 0.000 claims description 33
- 239000000919 ceramic Substances 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 8
- 239000010687 lubricating oil Substances 0.000 claims description 7
- 239000002826 coolant Substances 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 claims 1
- 238000004891 communication Methods 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 8
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000003754 machining Methods 0.000 description 7
- 238000005057 refrigeration Methods 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 210000003128 head Anatomy 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 210000003027 ear inner Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Auxiliary Devices For Machine Tools (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は工作機械、特にマシニングセンタにお
ける主軸の熱変位を防いで加工精度の向上を図る
主軸及び主軸ヘツドの冷却装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cooling device for a spindle and spindle head in a machine tool, particularly a machining center, which prevents thermal displacement of the spindle and improves machining accuracy.
従来、工作機械、特にマシニングセンタにおけ
る主軸及び主軸ヘツドの冷却装置としては、主冷
却装置から主軸軸受の周囲に潤滑油を循環させて
主軸及び主軸ヘツドを冷却し、これらの熱変位を
少なくする冷却装置が知られている。
Conventionally, cooling devices for the spindle and spindle head in machine tools, particularly machining centers, have been designed to cool the spindle and spindle head by circulating lubricating oil from the main cooling device around the spindle bearings, thereby reducing their thermal displacement. It has been known.
上述のような従来の主軸及び主軸ヘツドへ冷却
装置からの通常の潤滑油を供給循環させる冷却装
置では冷却効果が充分ではなく、従つて近時の如
く主軸回転の高速化が進むにつれて主軸軸受の熱
変位量が増大し、而して主軸軸受が損傷したり、
或いはワークの加工精度が低下する等の問題が生
じていた。
The cooling effect of the conventional cooling system that supplies and circulates normal lubricating oil from the cooling system to the main spindle and main spindle head as described above is not sufficient. The amount of thermal displacement increases, resulting in damage to the main shaft bearing,
Alternatively, problems such as a decrease in the machining accuracy of the workpiece have occurred.
本考案の目的は上記問題点を解決する為になさ
れたもので、主軸軸受の熱変位量を著しく減少さ
せて、主軸軸受の耐用年数を延長させると共にワ
ークの加工精度の向上を図ることができる主軸及
び主軸ヘツドの冷却装置を提供することにある。
The purpose of this invention was to solve the above problems, and it is possible to significantly reduce the amount of thermal displacement of the main shaft bearing, extend the service life of the main shaft bearing, and improve the machining accuracy of the workpiece. An object of the present invention is to provide a cooling device for a spindle and a spindle head.
本考案は上記の目的を達成するために、主軸と
主軸ヘツドとの間で、主軸と接触する部分に断熱
用セラミツクを介装した二箇所の軸受と、この二
つの軸受間に配設され、主軸との間に〓間を設け
て配置した金属スリーブと、前記金属スリーブと
軸受内に冷却用潤滑油を供給する通路を形成する
と共に外壁に近接して前記潤滑油と別に冷凍機を
経由して給油ポンプで送られる冷却油の循環路を
穿設してなる主軸ヘツドと、コイルを捲回してな
る固定子内に前記冷凍機を経由して循環ポンプで
冷却媒体を循環せしめる通路を設けるとともに該
固定子と回転子を内装した室内に冷却風を通過さ
せるようにした駆動モータと、からなり主軸部分
と駆動部分との二系統の冷却油循環路を備えたこ
とを特徴とする。
In order to achieve the above object, the present invention includes two bearings between the main spindle and the main spindle head, the parts of which are in contact with the main spindle are interposed with heat insulating ceramic, and the bearings are arranged between these two bearings. A metal sleeve is arranged with a space between the metal sleeve and the bearing, and a passage is formed between the metal sleeve and the bearing for supplying cooling lubricating oil. A main shaft head is provided with a circulation path for cooling oil sent by an oil supply pump, and a path is provided in a stator formed by winding a coil to circulate a cooling medium by a circulation pump via the refrigerator. The present invention is characterized in that it includes a drive motor that allows cooling air to pass through a room in which the stator and rotor are housed, and two systems of cooling oil circulation paths, one for the main shaft part and the other for the drive part.
かかる構成である本考案主軸ヘツドの冷却装置
は、軸受から発生する摩擦熱は主軸に伝導される
おそれがないから、主軸の熱変位を防止すること
ができる。しかも主軸の外周部分の主軸ヘツドへ
伝導された熱量は、該主軸ヘツド内を循環する冷
却用潤滑油（エヤーオイル）や冷却油により放熱
されるから、主軸ヘツドの加熱も防止できるの
で、冷却効率は著しく向上した。 The cooling device for the main spindle head of the present invention having such a configuration can prevent thermal displacement of the main spindle since there is no possibility that the frictional heat generated from the bearing will be conducted to the main spindle. Furthermore, the amount of heat conducted to the spindle head on the outer periphery of the spindle is dissipated by the cooling lubricating oil (air oil) and cooling oil circulating within the spindle head, which prevents the spindle head from overheating, thereby improving cooling efficiency. Significantly improved.
以下、本考案の実施例を図面を参照にして詳細
に説明する。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
図面は本考案の冷却装置を備えた工作機械の主
軸ヘツドの縦断面図を示している。 The drawing shows a longitudinal sectional view of the spindle head of a machine tool equipped with the cooling device of the present invention.
図面において、１は主軸ヘツドであり、主軸ヘ
ツド１は円筒状のケーシング１Ｂを側面に保持し
ている。このケーシング１Ｂ内方の軸受２７ａ，
２７ｂと、主軸ヘツドの軸受２７ｃにより主軸２
が回転自在に支持されている。本考案に使用され
る主軸駆動用モータは主軸一体形の例を示してい
る。即ち、駆動モータ部４の箱体４Ａ内方には主
軸２を回転駆動するモータ３が内装されており、
５は交流用モータ３の固定側回転磁界である。固
定子５には励磁用のコイル９が巻回されており、
このコイル９はコネクタ１０及びコード１１を介
して図示外の電源部に接続されている。 In the drawings, reference numeral 1 denotes a spindle head, and the spindle head 1 holds a cylindrical casing 1B on its side. The bearing 27a inside this casing 1B,
27b and the bearing 27c of the spindle head, the spindle 2
is rotatably supported. The spindle drive motor used in the present invention is an example of an integrated spindle type. That is, a motor 3 for rotationally driving the main shaft 2 is installed inside the box 4A of the drive motor section 4.
5 is a fixed side rotating magnetic field of the AC motor 3. An excitation coil 9 is wound around the stator 5,
This coil 9 is connected to a power source (not shown) via a connector 10 and a cord 11.
モータ３の回転子６は主軸２と同軸で中空のシ
ヤフト７と一体に結合され、回転する。シヤフト
７内方には主軸２の中間部が内挿され、これらは
キー８を介しナツト８Ａにより一体的に回転する
ようになつている。主軸２の先端部にはセラミツ
ク挿着孔２Ａが形成されており、該セラミツク挿
着孔２Ａにはテーパ孔３９Ａが形成されたセラミ
ツク筒３９が嵌挿固着されている。従つて工具及
び測定用工具１３はセラミツク筒３９を介して主
軸２に挿着されるようになつている。主軸２の軸
心部に形成された貫通孔２Ｂ内には押し棒１２Ａ
が遊挿されており、この押し棒１２Ａの先端部に
はコレツトクランパ１２が装着されている。コレ
ツトクランパ１２は公知の皿バネ等により工具１
３の後端部を引込み、工具１３を主軸２に着脱自
在に締結するようになつている。 A rotor 6 of the motor 3 is coaxial with the main shaft 2 and is integrally connected to a hollow shaft 7 for rotation. An intermediate portion of the main shaft 2 is inserted inside the shaft 7, and these parts are rotated together by a nut 8A via a key 8. A ceramic insertion hole 2A is formed at the tip of the main shaft 2, and a ceramic cylinder 39 having a tapered hole 39A is inserted and fixed into the ceramic insertion hole 2A. Therefore, the tool and measuring tool 13 are inserted into the main shaft 2 via the ceramic cylinder 39. A push rod 12A is provided in the through hole 2B formed in the axial center of the main shaft 2.
is loosely inserted, and a collect clamper 12 is attached to the tip of this push rod 12A. The collect clamper 12 is connected to the tool 1 using a known disc spring or the like.
3 is retracted, and the tool 13 is removably fastened to the main shaft 2.
ところで上記構成のマシニングセンタでは主軸
２が回転するのに伴い、主軸２の軸受や駆動モー
タ自体から熱が発生し、主軸２及び主軸ヘツド１
が熱変位を起し、ワークの加工精度に影響を及ぼ
す惧れがある。従つて、熱変位を防ぎ、ワークの
加工精度を向上させる為には上記各部位を冷却せ
しめる為の冷却装置が必要となる。以下、本考案
の冷却装置の具体的構成について述べる。 By the way, in the machining center with the above configuration, as the spindle 2 rotates, heat is generated from the bearings of the spindle 2 and the drive motor itself, and the spindle 2 and the spindle head 1 generate heat.
may cause thermal displacement, which may affect the machining accuracy of the workpiece. Therefore, in order to prevent thermal displacement and improve the machining accuracy of the workpiece, a cooling device is required to cool each of the above-mentioned parts. The specific configuration of the cooling device of the present invention will be described below.
ケーシング１Ｂの先端の軸受２７ａと主軸２と
の間および後端部の軸受２７ｂと主軸２との間に
はそれぞれセラミツクスリーブ３４，３５が介装
されている。 Ceramic sleeves 34 and 35 are interposed between the bearing 27a at the tip of the casing 1B and the main shaft 2, and between the bearing 27b at the rear end and the main shaft 2, respectively.
セラミツクスリーブ３４は主軸２の外周面と軸
受２７ａの内周面との間に介装され鍔３４Ａを有
し、この鍔部３４Ａは主軸２の外周に形成された
段差部３２に当接し軸方向（図中左右）の移動が
規制されている。 The ceramic sleeve 34 is interposed between the outer peripheral surface of the main shaft 2 and the inner peripheral surface of the bearing 27a and has a flange 34A. (left and right in the figure) movement is restricted.
他方のセラミツクスリーブ３５は主軸２の外周
面と軸受２７ｂの内周面との間に介装され、その
一端面は主軸２の外周面に形成された他方の段差
部３３に当接し軸方向の移動が規制されている。
軸受２７ａと軸受２７ｂとの間には金属スリーブ
３６が介在し、この金属スリーブ３６の内周面と
主軸２の外周面との間には円筒状の間隙３７が形
成されている。主軸２の外周には軸受２７ａ，２
７ｂの軸方向の移動を規制する係止用セラミツク
３８がナツトで締付けられて、固定されている。 The other ceramic sleeve 35 is interposed between the outer circumferential surface of the main shaft 2 and the inner circumferential surface of the bearing 27b, and one end surface of the ceramic sleeve 35 abuts on the other stepped portion 33 formed on the outer circumferential surface of the main shaft 2, and the axial direction Movement is restricted.
A metal sleeve 36 is interposed between the bearings 27a and 27b, and a cylindrical gap 37 is formed between the inner peripheral surface of the metal sleeve 36 and the outer peripheral surface of the main shaft 2. Bearings 27a, 2 are provided on the outer periphery of the main shaft 2.
A locking ceramic 38 that restricts the axial movement of 7b is fixed by being tightened with a nut.
次に駆動モータ冷却部を説明する。１４は冷凍
圧縮機であり、この冷凍圧縮機にはポンプ１５と
ポンプ１５Ａとが連結されている。箱体４Ａには
駆動モータ３の固定子５の周囲に供給する冷却油
の給油口１６が設けられており、該給油口１６は
ポンプ１５に接続されている。箱体４Ａの内方に
は空洞状の密閉されたポケツト１７が数箇所形成
されており、これらのポケツト１７は固定子５の
外周面に位置し互いに連通するとともに給油口１
６と連通しいてる。箱体４Ａの下部には戻油口１
８がポケツト１７と連通して設けられており、該
戻油口１８は冷凍圧縮１４に接続されている。更
に、箱体４Ａの後方にはエヤー噴射口１９が固定
子５内方の空間と連通して設けられており、この
エヤー噴射口１９からは圧縮空気が放出されるよ
うになつている。このエヤー（空気）は回転子６
と固定子５との間隙２０を通つてコイル９の回り
を巡り、箱体４Ａの下方に設けられた出口２１よ
り排出されるように構成され、モータが発生する
熱を機外に放出する。 Next, the drive motor cooling section will be explained. 14 is a refrigeration compressor, and a pump 15 and a pump 15A are connected to this refrigeration compressor. The box body 4A is provided with an oil supply port 16 for supplying cooling oil around the stator 5 of the drive motor 3, and the oil supply port 16 is connected to the pump 15. Several hollow sealed pockets 17 are formed inside the box body 4A, and these pockets 17 are located on the outer circumferential surface of the stator 5 and communicate with each other.
It communicates with 6. There is a return oil port 1 at the bottom of the box body 4A.
8 is provided in communication with the pocket 17, and the oil return port 18 is connected to the refrigeration compressor 14. Furthermore, an air injection port 19 is provided at the rear of the box body 4A to communicate with the space inside the stator 5, and compressed air is discharged from the air injection port 19. This air is the rotor 6
The heat generated by the motor is passed around the coil 9 through a gap 20 between the coil 9 and the stator 5, and is discharged from an outlet 21 provided below the box body 4A, thereby discharging the heat generated by the motor to the outside of the machine.
続いて主軸ヘツド冷却部について説明する。主
軸ヘツド１とケーシング１Ｂには冷却用の油を主
軸２の回りに送油する給油口２３が設けられてお
り、該給油口２３はパイプ２２を介してポンプ１
５Ａに接続されている。ケーシング１Ａと１Ｂの
間には部分円弧状に仕切られ各室が連通した多数
の空洞２４及び２４Ａが形成されており、図中下
方の空洞２４と上方の空洞２４Ａは図示外の連通
孔により互に連通している。 Next, the spindle head cooling section will be explained. The main shaft head 1 and the casing 1B are provided with an oil supply port 23 for feeding cooling oil around the main shaft 2, and the oil supply port 23 is connected to the pump 1 through a pipe 22.
Connected to 5A. A large number of cavities 24 and 24A are formed between the casings 1A and 1B, and the cavities 24 and 24A are partitioned into partial arc shapes and communicate with each other. is connected to.
給油口２３はケーシング１Ｂ内の連通孔２５Ａ
（点線）を介して下方の空洞２４に連通しており、
上方の空洞２４Ａは図示外の連通孔を介して冷却
油を排出する戻油口２５に連通している。この戻
油口２５はパイプ等を介して冷凍圧縮機１４に接
続されている。 The oil supply port 23 is a communication hole 25A in the casing 1B.
(dotted line) to the lower cavity 24,
The upper cavity 24A communicates with an oil return port 25 through which cooling oil is discharged through a communication hole (not shown). This oil return port 25 is connected to the refrigeration compressor 14 via a pipe or the like.
更に、ケーシング１Ｂの上方に配置したエヤー
オイル方式潤滑装置３７に通じるオイルエヤー噴
射口２６が設けられており、この噴射口２６には
圧縮空気と冷却用の油滴が前記エヤーオイル方式
潤滑装置３７から送られ、油滴が気化されて、冷
媒となり送られるようになつている。この噴射口
２６は連通孔２６Ａを介してケーシング１Ｂの内
周部で空洞２４Ａ内方に形成された連通孔２８Ａ
と連通し、連通孔２８Ａは両端部で軸受２７ａ，
２７ｂの鋼球の間隙に図中上方で連通している。
軸受２７ｂの鋼球の間隙を循環したオイルとエヤ
ーは、各軸受の近傍に設けられたラビリンスを介
しケーシング１Ｂの内周部で空洞２４内方に形成
された連通孔２８を通りケーシング１Ｂの下方先
端部に設けられたドレイン３０より排出されるよ
うになつている。同様に軸受２７ａの鋼球の間隙
を循環したオイルとエヤーは、主軸２の先端部外
周面とケーシング１Ａの内周面との画成する空隙
３１を通りドレイン３０より排出されるようにな
つている。 Further, an oil/air injection port 26 communicating with an air/oil type lubricating device 37 arranged above the casing 1B is provided, and compressed air and cooling oil droplets are sent from the air/oil type lubricating device 37 to this injection port 26. The oil droplets are vaporized and turned into a refrigerant. This injection port 26 is connected to a communication hole 28A formed inside the cavity 24A at the inner circumference of the casing 1B via a communication hole 26A.
The communication hole 28A communicates with the bearings 27a and 28A at both ends.
It communicates with the gap between the steel balls 27b at the top in the figure.
The oil and air that have circulated through the gaps between the steel balls of the bearing 27b pass through the communication hole 28 formed inside the cavity 24 at the inner circumference of the casing 1B via labyrinths provided near each bearing, and into the lower part of the casing 1B. It is designed to be discharged from a drain 30 provided at the tip. Similarly, the oil and air that circulated through the gap between the steel balls of the bearing 27a pass through the gap 31 defined by the outer peripheral surface of the tip of the main shaft 2 and the inner peripheral surface of the casing 1A, and are discharged from the drain 30. There is.
次に、上記構成による本考案の作用について説
明する。 Next, the operation of the present invention with the above configuration will be explained.
図示外のワークを加工するために主軸２を回転
させると、軸受２７ａ，２７ｂはころがり摩擦に
より熱を、モータ３は通電による熱を発生する。
まず軸受２７ａ，２７ｂ、の発生熱はエヤーオイ
ル方式潤滑により、極度におさえられているが、
わずかに生ずる発熱はセラミツクスリーブ３４，
３５及び係止用セラミツク３８により断熱されて
主軸２には伝導されない。しかし、主軸ヘツド１
のケーシング１Ｂには伝導されるが、ケーシング
１Ｂ内には前記のように連通孔２８，２８Ａ、金
属スリーブ２６および軸受２７内に冷却用潤滑油
が通過してドレイン３０より排出され、更に、こ
の冷却のためケーシング１Ｂには冷凍圧縮機１４
からポンプ１５Ａにより冷却油が循環送油され
て、主軸の前部は全体的に冷却される。 When the main shaft 2 is rotated to process a workpiece (not shown), the bearings 27a and 27b generate heat due to rolling friction, and the motor 3 generates heat due to energization.
First, the heat generated by the bearings 27a and 27b is extremely suppressed by air-oil lubrication.
The slight heat generated is caused by the ceramic sleeve 34,
35 and the locking ceramic 38, it is insulated and is not transmitted to the main shaft 2. However, the spindle head 1
The cooling lubricating oil passes through the communication holes 28, 28A, the metal sleeve 26, and the bearing 27 in the casing 1B as described above, and is discharged from the drain 30. A refrigeration compressor 14 is installed in the casing 1B for cooling.
Cooling oil is circulated by the pump 15A, thereby cooling the entire front part of the main shaft.
次に主軸ヘツド１内のモータ３の発熱は箱体４
Ａを熱するが、箱体４Ａには冷凍圧縮機１４から
ポンプ１５により冷却油が循環送油されており、
加えて図示外の装置より噴射口１９を介して圧縮
空気が循環して送られているため駆動モータ３は
全体的に冷却される。 Next, the heat generated by the motor 3 inside the spindle head 1 is transferred to the box body 4.
A is heated, and cooling oil is circulated from the refrigeration compressor 14 to the box 4A by a pump 15.
In addition, since compressed air is circulated and sent from a device not shown through the injection port 19, the drive motor 3 is entirely cooled.
以上説明したように、本考案の冷却装置は軸受
部分に断熱用セラミツクススリーブを介装したの
で、主軸回りに発生する摩擦熱は主軸に直接伝導
されることもなく、主軸の熱変位を防止すること
ができる。そのため軸受に起因する精度劣化や耐
用年数の減少が防止できる。特に本考案は主軸側
と駆動モータ側との二系統の冷却媒体を一つの冷
凍機で冷却するから、装置全体をコンパクトにで
きる。しかもそれぞれを独自の循環ポンプで循環
させてあるので、冷却効果がより以上倍加され
る。更に主軸外周部分は冷却油を用いた循環冷却
方式とオイルとエヤーを用いたオイルエヤー循環
方式を併用しているので冷却効果は著しく向上
し、主軸軸受が損傷することがなく、ワークの加
工精度も上がる。
As explained above, since the cooling device of the present invention has a heat insulating ceramic sleeve interposed in the bearing part, the frictional heat generated around the main shaft is not directly conducted to the main shaft, thereby preventing thermal displacement of the main shaft. be able to. Therefore, it is possible to prevent deterioration in accuracy and decrease in service life caused by bearings. In particular, the present invention uses one refrigerator to cool two systems of cooling media, one for the main shaft and one for the drive motor, so the entire device can be made more compact. Moreover, each of them is circulated by its own circulation pump, which further doubles the cooling effect. Furthermore, the outer circumference of the spindle uses both a circulation cooling system using cooling oil and an oil-air circulation system using oil and air, which significantly improves the cooling effect, prevents damage to the spindle bearing, and improves workpiece machining accuracy. Go up.
図面は本考案の主軸ヘツドの冷却装置の断面図
である。
１……主軸ヘツド、１Ａ……ケーシング、２…
…主軸、３……駆動モータ、４……駆動モータ
部、４Ａ……箱体、１４……冷凍圧縮機、１５，
１５Ａ……ポンプ、１６，２３……給油口、１７
……ポケツト、１８，２５……戻油口、１９，２
６……噴射口、２０……間隙、２１……出口、２
４，２４Ａ……空洞、２６Ａ，２８，２８Ａ……
連通孔、２７ａ，２７ｂ……軸受、３０……ドレ
イン、３４，３５……セラミツクスリーブ、３８
……係止用セラミツク。
The drawing is a sectional view of the spindle head cooling device of the present invention. 1...Spindle head, 1A...Casing, 2...
... Main shaft, 3 ... Drive motor, 4 ... Drive motor section, 4A ... Box body, 14 ... Refrigeration compressor, 15,
15A... Pump, 16, 23... Fuel filler port, 17
...Pocket, 18,25...Return oil port, 19,2
6...Injection port, 20...Gap, 21...Outlet, 2
4, 24A...Cavity, 26A, 28, 28A...
Communication hole, 27a, 27b...Bearing, 30...Drain, 34, 35...Ceramic sleeve, 38
...Ceramic for locking.
Claims (1)
分に断熱用セラミツクを介装した二箇所の軸受
と、この二つの軸受間に配設され、主軸との間に
〓間を設けて配置した金属スリーブと、前記金属
スリーブと軸受内に冷却用潤滑油を供給する通路
を形成すると共に外壁に近接して前記潤滑油と別
に冷凍機を経由して給油ポンプで送られる冷却油
の循環路を穿設してなる主軸ヘツドと、コイルを
捲回してなる固定子内に前記冷凍機を経由して循
環ポンプで冷却媒体を循環せしめる通路を設ける
とともに該固定子と回転子を内装した室内に冷却
風を通過させるようにした駆動モータと、からな
り主軸部分と駆動部分との二系統の冷却油循環路
を備えたことを特徴とする主軸ヘツドの冷却装
置。 Between the spindle and the spindle head, there are two bearings with insulation ceramic interposed in the part that contacts the spindle, and a space between the two bearings and the spindle. A metal sleeve, a passage for supplying cooling lubricating oil into the metal sleeve and the bearing, and a circulation path for cooling oil that is adjacent to the outer wall and is sent via a refrigerator and an oil supply pump separately from the lubricating oil. A passage is provided in the spindle head formed by drilling, and a stator formed by winding a coil, through which a cooling medium is circulated by a circulation pump via the refrigerator, and the stator and rotor are cooled in a room inside. What is claimed is: 1. A cooling device for a spindle head, comprising a drive motor through which wind passes, and two cooling oil circulation paths for a spindle portion and a drive portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984152041U JPH0314280Y2 (en) | 1984-10-08 | 1984-10-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984152041U JPH0314280Y2 (en) | 1984-10-08 | 1984-10-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6168848U JPS6168848U (en) | 1986-05-12 |
| JPH0314280Y2 true JPH0314280Y2 (en) | 1991-03-29 |
Family
ID=30710129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984152041U Expired JPH0314280Y2 (en) | 1984-10-08 | 1984-10-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0314280Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2510621B2 (en) * | 1987-09-30 | 1996-06-26 | 株式会社 牧野フライス製作所 | Motor built-in spindle device with cooling means |
| JP3995398B2 (en) * | 2000-07-18 | 2007-10-24 | 東芝機械株式会社 | Machine tool spindle equipment |
| US6913390B2 (en) * | 2001-08-13 | 2005-07-05 | Makino Milling Machine Company, Ltd | Rotating shaft apparatus |
| JP6251058B2 (en) * | 2014-01-24 | 2017-12-20 | オークマ株式会社 | Rotating shaft device cooling system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5877430A (en) * | 1981-11-04 | 1983-05-10 | Mitsubishi Heavy Ind Ltd | Cooling unit for rotary shaft |
| JPS59161202A (en) * | 1983-02-28 | 1984-09-12 | Okuma Mach Works Ltd | Structure of bearing opposing surface and slide guide surface of machine tool |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5781041U (en) * | 1980-11-04 | 1982-05-19 | ||
| JPS6029410Y2 (en) * | 1981-12-04 | 1985-09-05 | 豊田工機株式会社 | Main shaft cooling device |
| JPS58196045U (en) * | 1982-06-22 | 1983-12-27 | 東芝機械株式会社 | Cooling device for machine tool spindle system |
-
1984
- 1984-10-08 JP JP1984152041U patent/JPH0314280Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5877430A (en) * | 1981-11-04 | 1983-05-10 | Mitsubishi Heavy Ind Ltd | Cooling unit for rotary shaft |
| JPS59161202A (en) * | 1983-02-28 | 1984-09-12 | Okuma Mach Works Ltd | Structure of bearing opposing surface and slide guide surface of machine tool |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6168848U (en) | 1986-05-12 |
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