JPH06207621A - Fixed flow rate controlling under race lubricating spindle device - Google Patents
Fixed flow rate controlling under race lubricating spindle deviceInfo
- Publication number
- JPH06207621A JPH06207621A JP1931193A JP1931193A JPH06207621A JP H06207621 A JPH06207621 A JP H06207621A JP 1931193 A JP1931193 A JP 1931193A JP 1931193 A JP1931193 A JP 1931193A JP H06207621 A JPH06207621 A JP H06207621A
- Authority
- JP
- Japan
- Prior art keywords
- lubricating oil
- flow rate
- spindle
- oil
- drawbar
- 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
Links
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はスピンドル軸を支承する
軸受内輪にスピンドル軸中心部から潤滑油を供給するア
ンダレース潤滑スピンドル装置に関し、特に前記スピン
ドル軸の回転速度を変更した場合にも潤滑油の流量を一
定に保つことができる定流量制御アンダレース潤滑スピ
ンドル装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underlace lubrication spindle device for supplying lubricating oil from the center of a spindle shaft to a bearing inner ring that supports the spindle shaft, and more particularly to lubricating oil even when the rotational speed of the spindle shaft is changed. Constant-flow control under-race lubrication spindle device capable of maintaining a constant flow rate.
【０００２】[0002]
【従来の技術】マシニングセンタの工具主軸（スピンド
ル軸）を支承する高速スピンドル装置の潤滑方式として
は従来、多量の潤滑油を軸受側方のノズルから軸受内へ
向けて噴射するジェット潤滑方式があるが、このジェッ
ト潤滑方式では潤滑油の撹拌抵抗が大きくまた軸の冷却
が十分でないため、これよりさらに超高速のスピンドル
装置においては、軸受の外側からでなくスピンドル軸内
を通して軸受内輪へ潤滑油を供給するいわゆるアンダレ
ース潤滑方式が採られる。2. Description of the Related Art Conventionally, as a lubrication system for a high-speed spindle device that supports a tool spindle (spindle shaft) of a machining center, there is a jet lubrication system in which a large amount of lubricating oil is injected from a nozzle on the side of the bearing toward the inside of the bearing. In this jet lubrication system, the lubricating oil has a large stirring resistance and the shaft is not sufficiently cooled.Therefore, in a spindle device at an even higher speed than this, the lubricating oil is supplied to the inner ring of the bearing not through the outside of the bearing but through the spindle shaft. The so-called underlace lubrication method is adopted.
【０００３】超高速のマシニングセンタ用スピンドル装
置でアンダレース潤滑方式を採用したものとして、例え
ば実開平４−５７３５５号あるいは特願平４−３１１０
３４号公報に記載のスピンドル装置がある。これは中空
のスピンドル軸の貫通孔内にドローバーと称する工具固
定・解放棒を貫挿した潤滑油供給用中間スリーブを軸受
に対応する位置に合せて軸中心部に配置し、この中間ス
リーブの内外面にそれぞれ周方向の油溝を設けるととも
にこれらの油溝を連通するように半径方向の油路を設
け、さらにスリーブ外面側の周方向油溝と軸受内輪に形
成した半径方向の給油孔とを前記スピンドル軸に設けた
半径方向の給油路を介して連通せしめ、中間スリーブ内
面側の油溝は前記ドローバーの軸方向に延設した給油路
に連通させ、スピンドル軸の軸端の回転継手を経て外部
の給油ポンプから潤滑油を給送する構造としている。As an ultra-high-speed machining center spindle device adopting an under-race lubrication system, for example, Japanese Utility Model Laid-Open No. 4-57355 or Japanese Patent Application No. 4-3110.
There is a spindle device described in Japanese Patent Publication No. 34-34. This is because a lubricating oil supply intermediate sleeve, in which a tool fixing / releasing rod called a draw bar is inserted in the through hole of a hollow spindle shaft, is arranged at the center of the shaft according to the position corresponding to the bearing. Circumferential oil grooves are provided on the outer surface, respectively, and radial oil passages are provided so as to connect these oil grooves, and further, the circumferential oil groove on the sleeve outer surface side and the radial oil supply hole formed on the bearing inner ring are formed. The spindle shaft is communicated with a radial oil passage, and the oil groove on the inner surface of the intermediate sleeve is communicated with the oil passage extending in the axial direction of the draw bar, and is passed through a rotary joint at the shaft end of the spindle shaft. Lubricating oil is supplied from an external oil supply pump.
【０００４】[0004]
【発明が解決しようとする課題】アンダレース潤滑スピ
ンドル装置は、スピンドル軸側から軸受内輪を冷却でき
る点で高速回転用としてすぐれているが、この場合、潤
滑油はスピンドル装置内の潤滑油通路内に充満した状態
で供給ポンプから圧送され、しかも上述のように潤滑油
は中心のドローバーから中間スリーブおよびスピンドル
軸内の半径方向の油路を通って内輪にもたらされるた
め、スピンドル軸の高速回転による遠心力が軸内の潤滑
油に作用し、回転数が上がると潤滑油の管路抵抗が変化
し、潤滑油の供給量が変動し、供給ポンプからの流量が
増加する。潤滑油量が過多となると逆に軸受の回転抵抗
が増加し、スピンドル駆動モータの負荷増大による消費
動力の増大をきたし、温度上昇などスピンドル性能に影
響を及ぼすという問題があった。The underlace lubrication spindle device is excellent for high speed rotation because the bearing inner ring can be cooled from the spindle shaft side. In this case, the lubricating oil is in the lubricating oil passage in the spindle device. Is pumped from the supply pump in a state of being filled with the oil, and as described above, the lubricating oil is introduced from the central drawbar to the inner ring through the intermediate sleeve and the radial oil passage in the spindle shaft, and therefore, due to the high speed rotation of the spindle shaft. When the centrifugal force acts on the lubricating oil in the shaft and the number of rotations increases, the pipeline resistance of the lubricating oil changes, the supply amount of the lubricating oil fluctuates, and the flow rate from the supply pump increases. On the contrary, if the amount of lubricating oil is too large, the rotational resistance of the bearing increases, which causes an increase in power consumption due to an increase in load of the spindle drive motor, and there is a problem that spindle performance such as temperature rise is affected.
【０００５】本発明は、スピンドル軸の回転数等の状態
変化があっても装置内への潤滑油供給量を常に一定に保
つことができ、これによって温度上昇や消費動力等スピ
ンドル性能の安定化を図ったアンダレース潤滑スピンド
ル装置を提供することにある。According to the present invention, the amount of lubricating oil supplied to the apparatus can always be kept constant even if the state of rotation of the spindle shaft changes, thereby stabilizing the spindle performance such as temperature rise and power consumption. An object of the present invention is to provide an underlaced lubrication spindle device.
【０００６】[0006]
【課題を解決するための手段】本発明によれば、ハウジ
ングに嵌合されたころがり軸受によりスピンドル軸が回
転自在に支持され、該スピンドル軸を通して前記ころが
り軸受の内輪側から該軸受に潤滑油を供給するアンダレ
ース潤滑スピンドル装置であって、前記スピンドル軸は
中空孔を有し、該中空孔に中間スリーブを介して工具脱
着用のドローバーが挿通され、該ドローバーの中心に潤
滑油供給通路が設けられ、前記ドローバーの後端部には
回転継手が設けられて該回転継手を介して冷却ユニット
から該ドローバーの潤滑油供給通路へ潤滑油が供給さ
れ、さらに該潤滑油供給通路から前記中間スリーブに設
けた半径方向の孔を介して前記スピンドル軸に設けた半
径方向の潤滑油供給孔より前記ころがり軸受の内輪に潤
滑油を供給すべくされており、前記冷却ユニット出口側
の潤滑油流路に設けられた流量センサと、該流量センサ
の検出信号により潤滑油の流量をほぼ一定に制御するコ
ントローラとを有する定流量制御アンダレース潤滑スピ
ンドル装置が得られる。According to the present invention, a spindle shaft is rotatably supported by a rolling bearing fitted in a housing, and lubricating oil is applied to the bearing from the inner ring side of the rolling bearing through the spindle shaft. An under-race lubrication spindle device for supplying, wherein the spindle shaft has a hollow hole, through which a drawbar for tool removal is inserted through an intermediate sleeve, and a lubricating oil supply passage is provided at the center of the drawbar. A rotary joint is provided at a rear end portion of the drawbar, the lubricating oil is supplied from the cooling unit to the lubricant oil supply passage of the drawbar through the rotary joint, and further the lubricant oil is supplied from the lubricant oil supply passage to the intermediate sleeve. Lubricating oil should be supplied to the inner ring of the rolling bearing from the radial lubricating oil supply hole provided in the spindle shaft through the provided radial hole. And a constant flow rate control under-race lubrication spindle device having a flow rate sensor provided in the lubricating oil flow path on the outlet side of the cooling unit and a controller for controlling the flow rate of the lubricating oil to be substantially constant by a detection signal of the flow rate sensor. Is obtained.
【０００７】[0007]
【作用】潤滑油はスピンドル装置のドローバー内に後端
側から供給ポンプで圧送され、遠心力等で装置内の管路
抵抗が低下すると冷却ユニットからの潤滑油量が増加す
るが、本発明においては送油側の冷却ユニット出口側に
設けた流量センサで潤滑油量を検出し、この検出信号を
コントローラに入力し、スピンドル軸の回転数が変化し
たときの管路抵抗に変動があっても常に供給油量がスピ
ンドル軸に必要な設定流量になるように制御弁や供給ポ
ンプの駆動モータを制御するので、スピンドル軸の回転
数の変動があっても、供給する潤滑油量を一定に保つこ
とができる。The lubricating oil is pumped from the rear end side into the draw bar of the spindle device by the supply pump, and the amount of the lubricating oil from the cooling unit increases when the duct resistance in the device decreases due to centrifugal force or the like. Detects the amount of lubricating oil with a flow rate sensor provided on the outlet side of the cooling unit on the oil sending side, inputs this detection signal to the controller, and even if the line resistance changes when the rotational speed of the spindle shaft changes. The control valve and the drive motor of the supply pump are controlled so that the supplied oil amount is always the set flow rate required for the spindle shaft, so the supplied lubricating oil amount is kept constant even if there is a fluctuation in the rotational speed of the spindle shaft. be able to.
【０００８】[0008]
【実施例】次に本発明を実施例について図面を参照して
説明する。スピンドル装置側は、筒状のハウジング２内
に中空のスピンドル軸１が前後部それぞれ２個のころが
り軸受３を介して回転自在に支承され、該スピンドル軸
１の前端部に形成されたテーパ孔１０に工具２４の軸部
を挿入，保持するようになっている。スピンドル軸１は
各軸受３の対応位置で半径方向に穿けられた潤滑油供給
孔１３を有し、また各軸受３の内輪には半径方向の給油
孔６が形成されている。またスピンドル軸１の中空孔
に、前側２個の軸受３および後側２個の軸受３に対応し
て２体の中間スリーブ７が挿入され、さらにスピンドル
軸１の軸芯部に前後動作可能なドローバー８が挿入され
ている。ドローバー８の後端はスピンドル軸１から突出
して回転継手９が連結される。Embodiments of the present invention will now be described with reference to the drawings. On the spindle device side, a hollow spindle shaft 1 is rotatably supported in a cylindrical housing 2 via two rolling bearings 3 in each of the front and rear portions, and a taper hole 10 formed in the front end portion of the spindle shaft 1 is provided. The shaft portion of the tool 24 is inserted into and held by. The spindle shaft 1 has a lubricating oil supply hole 13 bored in a radial direction at a position corresponding to each bearing 3, and an inner ring of each bearing 3 is provided with a radial oil supply hole 6. Two intermediate sleeves 7 corresponding to the two front bearings 3 and the two rear bearings 3 are inserted into the hollow holes of the spindle shaft 1, and the spindle shaft 1 can be moved back and forth. The drawbar 8 is inserted. The rear end of the drawbar 8 projects from the spindle shaft 1 and is connected to the rotary joint 9.
【０００９】ドローバー８はその軸芯に沿って前端近く
で行き止まりとなった潤滑油供給通路１１が形成されて
いる。この潤滑油供給通路１１はドローバー後端へ抜け
て回転継手９の潤滑油導入孔に連通し、またドローバー
８内の半径方向の分岐孔１２からドローバー外周の軸方
向溝および周方向溝へ開口している。ドローバー外周の
前記周方向溝はさらに中間スリーブ７の半径方向の孔お
よびスリーブ外周の周溝４を経てスピンドル軸１に形成
された半径方向の潤滑油供給孔１３から各軸受内輪の半
径方向の給油孔６へ連通し、したがって工具脱着時にド
ローバー８が軸方向に往復移動しても回転継手９から導
入された潤滑油はこれらのドローバー８，中間スリーブ
７，スピンドル軸１および軸受内輪の給油孔６を通って
各軸受３に供給されるようになっている。各軸受３を潤
滑した潤滑油はハウジング２に形成された排出通路１４
を通って前端の排油口１５から排出される。The draw bar 8 has a lubricating oil supply passage 11 formed along its axis, which is a dead end near the front end. The lubricating oil supply passage 11 extends to the rear end of the drawbar, communicates with the lubricating oil introduction hole of the rotary joint 9, and opens from the radial branch hole 12 in the drawbar 8 to the axial groove and the circumferential groove on the outer periphery of the drawbar. ing. The circumferential groove on the outer periphery of the drawbar further passes through the radial hole of the intermediate sleeve 7 and the circumferential groove 4 on the outer periphery of the sleeve to the radial lubricating oil supply hole 13 formed in the spindle shaft 1 to supply the radial oil to each bearing inner ring. Therefore, even if the draw bar 8 reciprocates in the axial direction when the tool is attached / detached, the lubricating oil introduced from the rotary joint 9 is used for the draw bar 8, the intermediate sleeve 7, the spindle shaft 1 and the oil supply holes 6 of the bearing inner ring. It is adapted to be supplied to each bearing 3 through. Lubricating oil that lubricates each bearing 3 is provided in the discharge passage 14 formed in the housing 2.
Through the oil drain port 15 at the front end.
【００１０】この実施例では一対の中間スリーブ７の間
および中間スリーブ７とドローバー後端のフランジ部と
の間に該ドローバー８を後方へ押圧する皿ばね１６が設
けられている。ドローバー８の前端は工具後端頸部が挿
入されるように凹部１７が形成されかつ該工具の頸部末
端の膨出部１８と係合するボール１９が装着されてい
る。ドローバー８が皿ばね１６のばね力でスピンドル軸
１に対し後方へ押し出されると、ドローバー前端のボー
ル１９はドローバー前端部分を囲包する中間スリーブ７
の内径部に拘束されて工具の頸部末端の膨出部１８を係
止し、工具２４をスピンドル軸１に固定する。前記中間
スリーブ７の内径部の前端は大径となっており、したが
ってドローバー８を皿ばね１６に抗してスピンドル軸１
に対し前方へ移動させると、前記ボール１９が中間スリ
ーブ７の前端の大径内径部に落下して工具２４の頸部末
端の膨出部から外れて工具２４を解放する。符号２０は
ドローバー後端部に固着されたアンクランプレバーであ
り、工具解放時に図外駆動装置で該レバーを押動してド
ローバー８を前方へ移動させる。In this embodiment, disc springs 16 for pressing the draw bar 8 rearward are provided between the pair of intermediate sleeves 7 and between the intermediate sleeve 7 and the flange portion at the rear end of the draw bar. The front end of the drawbar 8 is formed with a recess 17 so that the neck of the rear end of the tool is inserted, and a ball 19 that engages with a bulge 18 at the end of the neck of the tool is mounted. When the drawbar 8 is pushed rearward with respect to the spindle shaft 1 by the spring force of the disc spring 16, the ball 19 at the front end of the drawbar is surrounded by the intermediate sleeve 7 that surrounds the front end portion of the drawbar.
The bulging portion 18 at the neck end of the tool is locked by being restrained by the inner diameter portion of the tool and the tool 24 is fixed to the spindle shaft 1. The front end of the inner diameter portion of the intermediate sleeve 7 has a large diameter, and therefore the drawbar 8 is resisted against the disc spring 16 and the spindle shaft 1
On the other hand, when the ball 19 is moved forward, the ball 19 drops into the large-diameter inner diameter portion of the front end of the intermediate sleeve 7 and is released from the bulging portion at the neck end of the tool 24 to release the tool 24. Reference numeral 20 is an unclamp lever fixed to the rear end of the drawbar, and when the tool is released, the lever is pushed by a drive device (not shown) to move the drawbar 8 forward.
【００１１】図１の実施例において、潤滑油はハウジン
グ２の排油口１５から戻し配管２１を通して帰油ポンプ
２２により強制吸引されてリザーバタンク２３へ戻され
る。そして該タンク２３から送油ポンプ２５によって汲
み上げられ冷却ユニット２６で温度コントロールされた
後、該ユニット出口側の制御弁２７および流量センサ２
８を経て送油配管２９を通って回転継手９からドローバ
ー８の潤滑油供給通路１１へ送られ、循環する。流量セ
ンサ２８は送油配管２９を通る潤滑油の流量を検出して
流量信号を出力するセンサであって、該流量信号はコン
トローラ３０に入力される。コントローラ３０は送油配
管２９を流れる潤滑油流量が予め設定された流量値にな
るように制御弁２７の開度をコントロールする。例えば
スピンドル軸１の回転数が高くなってスピンドル装置内
の潤滑油供給路の遠心ポンプ効果等で見かけ上管路抵抗
が小さくなり、軸受内輪を通る潤滑油流量が増加する
と、流量センサ２８でその変化を検出し、コントローラ
３０により制御弁２７を絞り、ドローバー８内に入る潤
滑油量を常に一定値となるようにする。このようにスピ
ンドル装置内の潤滑油量が一定化することにより、消費
動力が一定となり、温度上昇などのスピンドル性能が安
定する。In the embodiment of FIG. 1, the lubricating oil is forcibly sucked by the oil return pump 22 from the oil discharge port 15 of the housing 2 through the return pipe 21 and returned to the reservoir tank 23. Then, after being pumped up from the tank 23 by the oil feed pump 25 and temperature controlled by the cooling unit 26, the control valve 27 and the flow rate sensor 2 on the outlet side of the unit
After passing through 8, the oil is sent from the rotary joint 9 to the lubricating oil supply passage 11 of the drawbar 8 through the oil supply pipe 29, and is circulated. The flow rate sensor 28 is a sensor that detects the flow rate of the lubricating oil passing through the oil supply pipe 29 and outputs a flow rate signal, and the flow rate signal is input to the controller 30. The controller 30 controls the opening degree of the control valve 27 so that the flow rate of lubricating oil flowing through the oil supply pipe 29 becomes a preset flow rate value. For example, when the rotation speed of the spindle shaft 1 becomes high and the apparent pipeline resistance becomes small due to the centrifugal pump effect of the lubricating oil supply passage in the spindle device and the lubricating oil flow rate through the bearing inner ring increases, the flow sensor 28 When a change is detected, the controller 30 throttles the control valve 27 so that the amount of lubricating oil entering the drawbar 8 is always a constant value. By making the amount of lubricating oil in the spindle device constant in this way, power consumption becomes constant and spindle performance such as temperature rise is stabilized.
【００１２】図２は本発明の他の実施例を示した潤滑油
制御系統図であり、潤滑油が帰油ポンプ２２からリザー
バタンク２３，送油ポンプ２５，冷却ユニット２６およ
び送油配管２９の流量センサ２８を経て回転継手９へ送
られる経路は同じであるが、この実施例では流量センサ
２８からの検出流量信号によりコントローラ３０がイン
バータ３１を介して送油ポンプ２５の駆動モータ３２を
コントロールし、送油配管２９を流れる潤滑油量が予め
設定された流量となるように制御する。なお図２の実施
例でスピンドル装置側の構成各部は図１に示したものと
同一であり、同じ符号を付すにとどめて重複した説明は
省略する。FIG. 2 is a lubricating oil control system diagram showing another embodiment of the present invention, in which lubricating oil flows from the return oil pump 22 to the reservoir tank 23, the oil feed pump 25, the cooling unit 26 and the oil feed pipe 29. The route sent to the rotary joint 9 via the flow sensor 28 is the same, but in this embodiment, the controller 30 controls the drive motor 32 of the oil feed pump 25 via the inverter 31 by the detected flow signal from the flow sensor 28. The amount of lubricating oil flowing through the oil supply pipe 29 is controlled to be a preset flow rate. Note that, in the embodiment of FIG. 2, the constituent parts on the spindle device side are the same as those shown in FIG. 1, and the same reference numerals are allotted and duplicate description is omitted.
【００１３】[0013]
【発明の効果】以上説明したように本発明によれば、ス
ピンドル装置内部のスピンドル軸に送る潤滑油の送油配
管に流量センサを設け、該センサの出力信号で潤滑油の
流量をコントロールするようにしたので、スピンドル軸
の回転数の変更によりスピンドル軸側の見かけ上の管路
抵抗の変動による潤滑油流量の変化を小さくすることが
可能となり、スピンドル装置の温度上昇や軸受の回転抵
抗の増大，モータ類の消費動力の変動等を抑えることが
できるので、多数の工具を交換して使用するマシニング
センタの性能安定化を図ることができる。As described above, according to the present invention, a flow rate sensor is provided in the oil feed pipe for the lubricating oil to be sent to the spindle shaft inside the spindle device, and the flow rate of the lubricating oil is controlled by the output signal of the sensor. Therefore, it is possible to reduce changes in the lubricating oil flow rate due to changes in the apparent pipeline resistance on the spindle shaft side by changing the spindle shaft speed, increasing the temperature of the spindle device and increasing the rotation resistance of the bearings. Since it is possible to suppress fluctuations in power consumption of motors and the like, it is possible to stabilize the performance of a machining center in which a large number of tools are replaced and used.
【図１】本発明の１実施例による定流量制御アンダレー
ス潤滑スピンドル装置の概略図である。FIG. 1 is a schematic diagram of a constant flow rate controlled underrace lubrication spindle device according to one embodiment of the present invention.
【図２】本発明の他の実施例の図１と類似した概略図で
ある。FIG. 2 is a schematic view similar to FIG. 1 of another embodiment of the present invention.
１ スピンドル軸 ３ ころがり軸受 ６ 内輪給油孔 ８ ドローバー ９ 回転継手 １１ 潤滑油供給通路 １３ 潤滑油供給孔 １４ 排出通路 １５ 排油口 ２１ 戻し配管 ２２ 帰油ポンプ ２３ リザーバタンク ２５ 送油ポンプ ２６ 冷却ユニット ２７ 制御弁 ２８ 流量センサ ２９ 送油配管 ３０ コントローラ ３１ インバータ ３２ 駆動モータ 1 Spindle Shaft 3 Rolling Bearing 6 Inner Ring Oil Supply Hole 8 Drawbar 9 Rotating Joint 11 Lubricating Oil Supply Passage 13 Lubricating Oil Supply Hole 14 Discharge Passage 15 Exhaust Port 21 Return Pipe 22 Return Oil Pump 23 Reservoir Tank 25 Oil Pump 26 Cooling Unit 27 Control valve 28 Flow rate sensor 29 Oil supply pipe 30 Controller 31 Inverter 32 Drive motor
Claims (1)
りスピンドル軸が回転自在に支持され、該スピンドル軸
を通して前記ころがり軸受の内輪側から該軸受に潤滑油
を供給するアンダレース潤滑スピンドル装置であって、
前記スピンドル軸は中空孔を有し、該中空孔に中間スリ
ーブを介して工具脱着用のドローバーが挿通され、該ド
ローバーの中心に潤滑油供給通路が設けられ、前記ドロ
ーバーの後端部には回転継手が設けられて該回転継手を
介して冷却ユニットから該ドローバーの潤滑油供給通路
へ潤滑油が供給され、さらに該潤滑油供給通路から前記
中間スリーブに設けた半径方向の孔を介して前記スピン
ドル軸に設けた半径方向の潤滑油供給孔より前記ころが
り軸受の内輪に潤滑油を供給すべくされており、前記冷
却ユニット出口側の潤滑油流路に設けられた流量センサ
と、該流量センサの検出信号により潤滑油の流量をほぼ
一定に制御するコントローラとを有することを特徴とす
る定流量制御アンダレース潤滑スピンドル装置。1. An underlace lubrication spindle device in which a spindle shaft is rotatably supported by a rolling bearing fitted in a housing, and lubricating oil is supplied to the bearing from the inner ring side of the rolling bearing through the spindle shaft. ,
The spindle shaft has a hollow hole, a drawbar for tool removal is inserted into the hollow hole through an intermediate sleeve, a lubricating oil supply passage is provided at the center of the drawbar, and a rotary end is provided at a rear end portion of the drawbar. A lubricating oil is supplied from a cooling unit to the lubricating oil supply passage of the drawbar through the rotary joint, and the spindle is further provided from the lubricating oil supply passage through a radial hole provided in the intermediate sleeve. Lubricating oil is intended to be supplied to the inner ring of the rolling bearing from a lubricating oil supply hole provided in the shaft in the radial direction, and a flow rate sensor provided in the lubricating oil flow path on the outlet side of the cooling unit and a flow rate sensor of the flow rate sensor. A constant flow rate control under-race lubrication spindle device, comprising: a controller for controlling the flow rate of lubricating oil to be substantially constant according to a detection signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01931193A JP3548785B2 (en) | 1993-01-11 | 1993-01-11 | Constant flow control under-race lubrication spindle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01931193A JP3548785B2 (en) | 1993-01-11 | 1993-01-11 | Constant flow control under-race lubrication spindle device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06207621A true JPH06207621A (en) | 1994-07-26 |
| JP3548785B2 JP3548785B2 (en) | 2004-07-28 |
Family
ID=11995877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01931193A Expired - Fee Related JP3548785B2 (en) | 1993-01-11 | 1993-01-11 | Constant flow control under-race lubrication spindle device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3548785B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008051228A (en) * | 2006-08-24 | 2008-03-06 | Okuma Corp | Bearing and bearing device |
| JP2008119805A (en) * | 2006-11-15 | 2008-05-29 | Okuma Corp | Main spindle lubricating device |
| WO2010014918A2 (en) * | 2008-07-31 | 2010-02-04 | University Of Utha Research Foundation | Spinning fluids reactor |
| DE102011008810A1 (en) | 2011-01-19 | 2012-07-19 | Schaeffler Technologies Gmbh & Co. Kg | Device for supplying lubricant such as lubrication oil to bearing, comprises mechanical self-regulating restrictors which are arranged in supply lines respectively, for restricting lubricant flow to bearings |
| CN106002469A (en) * | 2016-07-26 | 2016-10-12 | 山东鲁南机床有限公司 | Mechanism for transmitting fluid medium between crossed rotary components |
| JP2020189398A (en) * | 2019-05-20 | 2020-11-26 | 世越科技有限公司 | Supplementary device for raising and lowering temperature of machine tool spindle |
| CN112664567A (en) * | 2020-12-04 | 2021-04-16 | 国家电投集团广西兴安风电有限公司 | Automatic bearing lubrication control method and device |
-
1993
- 1993-01-11 JP JP01931193A patent/JP3548785B2/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008051228A (en) * | 2006-08-24 | 2008-03-06 | Okuma Corp | Bearing and bearing device |
| JP4653040B2 (en) * | 2006-08-24 | 2011-03-16 | オークマ株式会社 | Bearing and bearing device |
| JP2008119805A (en) * | 2006-11-15 | 2008-05-29 | Okuma Corp | Main spindle lubricating device |
| DE102007054446B4 (en) * | 2006-11-15 | 2020-09-10 | Okuma Corporation | Main drive shaft lubrication device |
| WO2010014918A2 (en) * | 2008-07-31 | 2010-02-04 | University Of Utha Research Foundation | Spinning fluids reactor |
| WO2010014918A3 (en) * | 2008-07-31 | 2010-05-14 | University Of Utha Research Foundation | Spinning fluids reactor |
| US8313716B2 (en) | 2008-07-31 | 2012-11-20 | University Of Utah Research Foundation | Spinning fluids reactor |
| DE102011008810A1 (en) | 2011-01-19 | 2012-07-19 | Schaeffler Technologies Gmbh & Co. Kg | Device for supplying lubricant such as lubrication oil to bearing, comprises mechanical self-regulating restrictors which are arranged in supply lines respectively, for restricting lubricant flow to bearings |
| CN106002469A (en) * | 2016-07-26 | 2016-10-12 | 山东鲁南机床有限公司 | Mechanism for transmitting fluid medium between crossed rotary components |
| JP2020189398A (en) * | 2019-05-20 | 2020-11-26 | 世越科技有限公司 | Supplementary device for raising and lowering temperature of machine tool spindle |
| CN112664567A (en) * | 2020-12-04 | 2021-04-16 | 国家电投集团广西兴安风电有限公司 | Automatic bearing lubrication control method and device |
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| Publication number | Publication date |
|---|---|
| JP3548785B2 (en) | 2004-07-28 |
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