JPH11173336A - Rolling bearing - Google Patents
Rolling bearingInfo
- Publication number
- JPH11173336A JPH11173336A JP9340361A JP34036197A JPH11173336A JP H11173336 A JPH11173336 A JP H11173336A JP 9340361 A JP9340361 A JP 9340361A JP 34036197 A JP34036197 A JP 34036197A JP H11173336 A JPH11173336 A JP H11173336A
- Authority
- JP
- Japan
- Prior art keywords
- lubricating oil
- rolling bearing
- rolling
- annular groove
- bearing
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6681—Details of distribution or circulation inside the bearing, e.g. grooves on the cage or passages in the rolling elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
- F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/39—General build up of machine tools, e.g. spindles, slides, actuators
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、潤滑油を転動体に
確実に供給できる転がり軸受に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling bearing capable of reliably supplying lubricating oil to rolling elements.
【０００２】[0002]
【従来の技術】回転軸を支持する転がり軸受は、特に工
作機械の分野での近時の回転主軸の高速化に伴い良好な
潤滑が要求されている。この要求を満たすために、従来
から様々な軸受潤滑装置が提案されている。例えば、特
開平６−２６４９３４号公報に開示された主軸装置の軸
受潤滑機構では、転がり軸受の内輪の一方の端面を部分
的に切り欠いて切欠部を形成し、この切欠部に開口する
ノズルを間座に形成し、該ノズルに主軸装置の主軸ハウ
ジングに穿設された潤滑油供給路を介して潤滑油を供給
し、前記ノズルから前記内輪の切欠部に潤滑油を供給す
るようにしている。また、特開昭６３−１７６８２２号
公報に開示された円筒ころ軸受の潤滑装置では、内輪の
両端につばを設け、内外輪の間に配設した円筒ころを保
持する保持器を前記つばにより案内し、前記つばと保持
器との間を臨むノズルから潤滑油を供給するようにして
いる。2. Description of the Related Art Rolling bearings that support a rotating shaft are required to have good lubrication in recent years, particularly in the field of machine tools, as the speed of the rotating spindle increases. In order to satisfy this demand, various bearing lubrication devices have been conventionally proposed. For example, in a bearing lubrication mechanism for a spindle device disclosed in JP-A-6-264934, a notch is formed by partially notching one end surface of an inner ring of a rolling bearing, and a nozzle opening in the notch is formed. A lubricating oil is supplied to the nozzle via a lubricating oil supply passage formed in the main shaft housing of the main spindle device, and the lubricating oil is supplied from the nozzle to the notch of the inner ring. . In a lubricating device for a cylindrical roller bearing disclosed in Japanese Patent Application Laid-Open No. 63-176822, collars are provided at both ends of an inner ring, and a retainer for holding a cylindrical roller disposed between the inner and outer rings is guided by the collar. Lubricating oil is supplied from a nozzle facing between the collar and the retainer.
【０００３】[0003]
【発明が解決しようとする課題】特開平６−２６４９３
４号公報の軸受潤滑機構では、内輪の一方の端部を切り
欠いているために内輪の負荷容量が低下する。更に、内
輪の両端部を切り欠くことができないので、軸受の両側
から潤滑することができない。従って、負荷容量が低下
する点と充分な潤滑が期待できない点からして、より高
速化を目的とした軸受およびその潤滑装置として適して
いない。他方、特開昭６３−１７６８２２号公報の潤滑
装置では、保持器が内輪のつばにより案内される構成と
なっているために、保持器と内輪のつばとの間の隙間は
非常に狭く、高速化を目的とした軸受として充分な潤滑
油供給を確保できない問題がある。SUMMARY OF THE INVENTION Japanese Patent Application Laid-Open No. 6-26493
In the bearing lubrication mechanism disclosed in Japanese Patent Application Laid-Open No. 4 (1999) -1999, the load capacity of the inner ring is reduced because one end of the inner ring is notched. Further, since both ends of the inner ring cannot be cut off, lubrication cannot be performed from both sides of the bearing. Therefore, the bearing is not suitable as a bearing aiming at a higher speed and a lubricating device therefor because the load capacity is reduced and sufficient lubrication cannot be expected. On the other hand, in the lubricating device disclosed in Japanese Patent Application Laid-Open No. 63-176822, the gap between the retainer and the inner ring collar is very narrow because the retainer is guided by the inner ring collar. There is a problem that a sufficient lubricating oil supply cannot be secured as a bearing for the purpose of realization.
【０００４】こうした従来技術の問題点に鑑み、本発明
は、高速で回転する転がり軸受の転動体と内外輪間また
は転動体と保持器間に潤滑油を確実に供給することを目
的としている。[0004] In view of the problems of the prior art, an object of the present invention is to reliably supply lubricating oil between a rolling element and an inner / outer ring or between a rolling element and a cage of a rolling bearing rotating at high speed.
【０００５】[0005]
【課題を解決するための手段】すなわち本発明は、内外
輪の間に配設された転動体と、該転動体を保持する保持
器とを具備する転がり軸受において、前記保持器の少な
くとも一方の端面に環状溝を形成し、前記環状溝から前
記転動体を臨むように潤滑油供給孔を穿設し、前記環状
溝と潤滑油供給孔を通して前記転動体へ向けて潤滑油を
供給するように構成した転がり軸受を要旨とする。That is, the present invention relates to a rolling bearing having a rolling element disposed between an inner ring and an outer ring, and a retainer for holding the rolling element, wherein at least one of the retainers is provided. An annular groove is formed on the end face, a lubricating oil supply hole is formed so as to face the rolling element from the annular groove, and lubricating oil is supplied toward the rolling element through the annular groove and the lubricating oil supply hole. The gist of the rolling bearing is as follows.
【０００６】[0006]
【作用】このように構成された転がり軸受に対して、保
持器の環状溝と微小間隙をおいて開口したノズルから潤
滑油を供給することにより、潤滑油が保持器に形成され
た環状溝と潤滑油供給孔とを通過して、転がり軸受の転
動体に直接的に供給されるので、潤滑油が転がり軸受の
周囲に形成される空気の流れにより転がり軸受内に到達
することが妨害されず、転がり軸受が潤滑油により効果
的、かつ確実に潤滑、冷却される。The lubricating oil is supplied to the rolling bearing configured as described above from a nozzle opened at a small gap from the annular groove of the cage, so that the lubricating oil is formed in the annular groove formed in the cage. It passes through the lubricating oil supply hole and is directly supplied to the rolling element of the rolling bearing, so that the lubricating oil does not reach the inside of the rolling bearing due to the flow of air formed around the rolling bearing. The rolling bearing is effectively and reliably lubricated and cooled by the lubricating oil.
【０００７】[0007]
【発明の実施の形態】以下、添付図面を参照して本発明
の実施形態を説明する。添付図面において、図１は本発
明実施形態の転がり軸受を用いた主軸装置の部分縦断面
図であり、図２は図１の矢視線ＩＩ−ＩＩに沿った本発
明実施形態による転がり軸受の断面図であり、図３は図
１の転がり軸受周辺部の部分拡大断面図である。Embodiments of the present invention will be described below with reference to the accompanying drawings. In the accompanying drawings, FIG. 1 is a partial longitudinal sectional view of a spindle device using the rolling bearing according to the embodiment of the present invention, and FIG. 2 is a cross-sectional view of the rolling bearing according to the embodiment of the present invention along the line II-II in FIG. FIG. 3 is a partially enlarged sectional view of the periphery of the rolling bearing of FIG.
【０００８】本発明実施形態の転がり軸受を用いた主軸
装置１は、前側を一対の転がり軸受７により、後側を図
示しない軸受により主軸ハウジング３に回転支持された
主軸５を具備している。主軸ハウジング３には、潤滑油
供給源９から転がり軸受７に潤滑油を供給するための潤
滑油供給通路３ａおよび潤滑油回収通路３ｂが形成され
ている。潤滑油供給源９は、図示されていないがポン
プ、タンクを主要な構成要素として含み、潤滑油供給管
路９ａと潤滑油回収管路９ｂを介して潤滑油供給通路３
ａ、潤滑油回収通路３ｂに各々接続されている。主軸５
は主軸ハウジング３を貫通、配設されており、後端（図
１において右側）においてカップリングを介して駆動モ
ータにより回転駆動させることができる。また、主軸ハ
ウジング内に駆動モータ（図示せず）を設けたビルトイ
ンモータにより駆動してもよい。主軸５の先端（図１に
おいて左側）には、工具ホルダ（図示せず）を介してエ
ンドミルやドリル等の切削工具（図示せず）が装着され
る。A spindle device 1 using a rolling bearing according to an embodiment of the present invention includes a spindle 5 rotatably supported by a pair of rolling bearings 7 on a front side and a spindle housing 3 on a rear side by a bearing (not shown). A lubricating oil supply passage 3a and a lubricating oil collecting passage 3b for supplying lubricating oil from the lubricating oil supply source 9 to the rolling bearing 7 are formed in the main shaft housing 3. Although not shown, the lubricating oil supply source 9 includes a pump and a tank as main components, and includes a lubricating oil supply passage 3a through a lubricating oil supply line 9a and a lubricating oil recovery line 9b.
a, respectively, are connected to the lubricating oil recovery passage 3b. Spindle 5
Is disposed so as to penetrate the main shaft housing 3, and can be driven to rotate by a driving motor via a coupling at a rear end (right side in FIG. 1). Further, it may be driven by a built-in motor provided with a drive motor (not shown) in the spindle housing. A cutting tool (not shown) such as an end mill or a drill is mounted on a tip (left side in FIG. 1) of the main shaft 5 via a tool holder (not shown).
【０００９】転がり軸受７は内外輪７ａ、７ｂと、内外
輪７ａ、７ｂの間に配設されたボール７ｃと、ボール７
ｃを保持する保持器２３を具備するアンギュラ玉軸受か
ら成り、その内輪７ａを以て主軸５の外面に嵌合され、
かつ、外輪７ｂ（図２）を以て主軸ハウジング３の内面
に嵌合されている。保持器は銅合金、樹脂等で形成され
ている。また、転がり軸受７は、３つの内輪カラー１７
を介して主軸５に沿って軸方向に所定の間隔で隔置され
ており、主軸５の内側からナット１９により、該ナット
１９と主軸５の肩部５ａの間において軸方向に固定され
ている。更に、転がり軸受７は、３つの外輪カラー１
１、１３、１５により主軸ハウジング３の内面に沿って
軸方向に前記所定の間隔で隔置されおり、ベアリング押
え２１を外側からボルト２１ａにより主軸ハウジング３
の先端面に固定することにより、主軸ハウジング３の内
面肩部３ｃとベアリング押え２１との間で軸方向に固定
される。The rolling bearing 7 includes inner and outer rings 7a and 7b, a ball 7c disposed between the inner and outer rings 7a and 7b, and a ball 7c.
c, which is fitted with the outer surface of the main shaft 5 with its inner ring 7a,
Further, it is fitted to the inner surface of the spindle housing 3 with an outer ring 7b (FIG. 2). The retainer is made of a copper alloy, a resin, or the like. The rolling bearing 7 has three inner ring collars 17.
Are spaced at a predetermined interval in the axial direction along the main shaft 5 via a nut, and are fixed in the axial direction between the nut 19 and the shoulder 5a of the main shaft 5 by a nut 19 from the inside of the main shaft 5. . Further, the rolling bearing 7 has three outer ring collars 1.
1, 13 and 15 are axially spaced along the inner surface of the spindle housing 3 at the above-mentioned predetermined distance, and the bearing retainer 21 is bolted from outside to the spindle housing 3 by bolts 21a.
Is fixed in the axial direction between the inner shoulder 3 c of the spindle housing 3 and the bearing retainer 21.
【００１０】保持器２３の軸方向外側の端面には環状溝
２３ａが形成されており、該環状溝２３ａと保持器２３
の軸方向内側の端面との間には、保持器２３の軸方向内
側の端面においてボール７ｃを臨むように開口した潤滑
油供給孔２３ｂが形成されている。外輪カラー１１、１
３、１５において保持器２３の環状溝２３ａに対面する
端面には、ノズル部１１ｃ、１３ｃ、１５ｃが形成され
ており、ノズル部１１ｃ、１３ｃ、１５ｃは環状溝２３
ａ内に微小間隔をおいて挿入されている。該ノズル部１
１ｃ、１３ｃ、１５ｃは、カラー潤滑油供給通路１１
ａ、１３ａ、１５ａを介して前記ハウジング潤滑油供給
通路３ａに連通している。また、転がり軸受７に関して
軸方向外側に配設された２つのカラー１１、１５には、
転がり軸受７の外輪７ｂと保持器２３の間に開口し、か
つ、潤滑油回収通路３ｂに連通するカラー潤滑油回収通
路１１ｂ、１５ｂが形成されている。An annular groove 23a is formed in the axially outer end face of the retainer 23, and the annular groove 23a and the retainer 23 are formed.
A lubricating oil supply hole 23b is formed on the axially inner end face of the retainer 23 so as to face the ball 7c. Outer ring collar 11, 1
Nozzles 11c, 13c and 15c are formed on the end faces of the retainer 23 facing the annular groove 23a in 3 and 15, and the nozzles 11c, 13c and 15c are formed in the annular groove 23.
a is inserted at a very small interval in a. The nozzle part 1
1c, 13c and 15c are the color lubricating oil supply passages 11
a, 13a, and 15a communicate with the housing lubricating oil supply passage 3a. In addition, two collars 11 and 15 disposed axially outward with respect to the rolling bearing 7 include:
Color lubricating oil recovery passages 11b and 15b are formed between the outer ring 7b of the rolling bearing 7 and the retainer 23 and communicate with the lubricating oil recovery passage 3b.
【００１１】以下、本発明実施形態の作用を説明する。
主軸装置１が作動を開始するに先立って、潤滑油供給源
９のポンプが作動して、潤滑油供給路を形成する潤滑油
供給管路９ａ、潤滑油供給通路３ａ、カラー潤滑油供給
通路１１ａ、１３ａ、１５ａを介して、外輪カラー１
１、１３、１５の各々のノズル部１１ｃ、１３ｃ、１５
ｃに潤滑油が供給される。ノズル部１１ｃ、１３ｃ、１
５ｃから噴出した潤滑油は、保持器２３の環状溝２３
ａ、潤滑油供給孔２３ｂを介してボール７ｃに供給され
る。転がり軸受７は主軸５と共に高速回転しているの
で、ノズル部１１ｃ、１３ｃ、１５ｃから噴出する潤滑
油には主軸５の中心軸線Ｏに関して半径方向外側へ強い
遠心力が作用する。従って、潤滑油は、保持器２３の潤
滑油供給孔２３ｂから、ボール７ｃの表面を潤滑して半
径方向外側へ流動して、保持器２３と外輪７ｂの間か
ら、潤滑油回収路を形成する、カラー潤滑油回収通路１
１ｂ、１５ｂ、潤滑油回収通路３ｂ、潤滑油回収管路９
ｂを介して潤滑油供給源９へ回収される。Hereinafter, the operation of the embodiment of the present invention will be described.
Prior to the start of the operation of the main spindle device 1, the pump of the lubricating oil supply source 9 is operated to form a lubricating oil supply passage 9a, a lubricating oil supply passage 3a, and a color lubricating oil supply passage 11a. , 13a, 15a, the outer ring collar 1
Nozzles 11c, 13c, 15 of 1, 13, 15
The lubricating oil is supplied to c. Nozzles 11c, 13c, 1
The lubricating oil squirted from 5 c
a, It is supplied to the ball 7c through the lubricating oil supply hole 23b. Since the rolling bearing 7 rotates at a high speed together with the main shaft 5, a strong centrifugal force acts radially outward with respect to the central axis O of the main shaft 5 on the lubricating oil ejected from the nozzle portions 11 c, 13 c, 15 c. Accordingly, the lubricating oil lubricates the surface of the ball 7c from the lubricating oil supply hole 23b of the retainer 23 and flows radially outward to form a lubricating oil recovery path from between the retainer 23 and the outer ring 7b. , Color lubricating oil recovery passage 1
1b, 15b, lubricating oil collecting passage 3b, lubricating oil collecting pipe 9
The lubricating oil is supplied to the lubricating oil supply source 9 through b.
【００１２】添付図面を参照して本発明の好ましい実施
形態を説明したが、本発明はこの実施形態に限定され
ず、本発明の技術的思想と範囲とを逸脱することなく、
種々の変更、変形、改良が可能であることは当業者の当
然とするところである。例えば、実施形態において転が
り軸受はアンギュラ玉軸受にて形成されていたが、本発
明はこれに限定されず、深みぞ玉軸受や円筒ころ軸受等
他の形式の転がり軸受にて形成してもよい。Although the preferred embodiment of the present invention has been described with reference to the accompanying drawings, the present invention is not limited to this embodiment, and does not depart from the technical idea and scope of the present invention.
It is obvious to those skilled in the art that various changes, modifications, and improvements are possible. For example, in the embodiment, the rolling bearing is formed of an angular ball bearing, but the present invention is not limited to this, and may be formed of another type of rolling bearing such as a deep groove ball bearing or a cylindrical roller bearing. .
【００１３】既述の実施形態では主軸５の前側は２つの
転がり軸受７により支持されていたが、本発明において
転がり軸受の数は本質的に重要ではなく、１または２よ
り多い個数の転がり軸受を備えた主軸装置に本発明を適
用することもできる。また図示しない後側の軸受は前側
の転がり軸受７と同様の軸受方式および潤滑方式で構成
しても良いし、他の軸受方式および潤滑方式で構成して
も良い。In the embodiment described above, the front side of the main shaft 5 is supported by the two rolling bearings 7. However, in the present invention, the number of the rolling bearings is not essential, and the number of the rolling bearings is one or more than two. The present invention can also be applied to a spindle device provided with. Further, the rear bearing (not shown) may be configured with the same bearing system and lubrication system as the front rolling bearing 7, or may be configured with another bearing system and lubrication system.
【００１４】図２において、保持器２３に形成された潤
滑油供給孔２３ｂは環状溝２３ａの周方向に向けられた
長丸状の断面を有するように図示されているが、円筒状
の孔にて潤滑供給孔２３ｂを形成してもよい。また、図
２に示す実施形態では潤滑油供給孔２３ｂの個数は、ボ
ール７の個数に合わせて８個となっているが、本発明は
これに限定されない。潤滑油供給孔２３ｂの個数は、転
がり軸受７に負荷される荷重や潤滑油供給源９からの潤
滑油の流量等を勘案して適宜に決定することができる。In FIG. 2, the lubricating oil supply hole 23b formed in the retainer 23 is shown to have an oval cross section directed in the circumferential direction of the annular groove 23a. Alternatively, the lubrication supply holes 23b may be formed. In the embodiment shown in FIG. 2, the number of the lubricating oil supply holes 23b is eight in accordance with the number of the balls 7, but the present invention is not limited to this. The number of the lubricating oil supply holes 23b can be appropriately determined in consideration of the load applied to the rolling bearing 7, the flow rate of the lubricating oil from the lubricating oil supply source 9, and the like.
【００１５】[0015]
【発明の効果】既述の説明から明らかなように、本発明
によれば、潤滑油が保持器に形成された環状溝と潤滑油
供給孔とを通過して、転がり軸受の転動体に直接的に供
給されるので、潤滑油が、転がり軸受の周囲に形成され
る空気の流れにより転がり軸受内に到達することが妨害
されず、転がり軸受が潤滑油により効果的、かつ確実に
潤滑、冷却される。As is apparent from the above description, according to the present invention, the lubricating oil passes through the annular groove formed in the cage and the lubricating oil supply hole and is directly applied to the rolling element of the rolling bearing. Supply, the lubricating oil is not hindered from reaching the inside of the rolling bearing by the flow of air formed around the rolling bearing, and the rolling bearing is effectively and reliably lubricated and cooled by the lubricating oil. Is done.
【図１】本発明実施形態の転がり軸受を用いた主軸装置
の部分縦断面図である。FIG. 1 is a partial longitudinal sectional view of a spindle device using a rolling bearing according to an embodiment of the present invention.
【図２】図１の矢視線ＩＩ−ＩＩに沿った本発明実施形
態による転がり軸受の断面図である。FIG. 2 is a cross-sectional view of the rolling bearing according to the embodiment of the present invention, taken along line II-II of FIG.
【図３】図１の転がり軸受周辺部の部分拡大断面図であ
る。FIG. 3 is a partially enlarged sectional view of the periphery of the rolling bearing of FIG. 1;
１…主軸装置 ３…主軸ハウジング ３ａ…潤滑油供給路 ３ｂ…潤滑油回収路 ５…主軸 ７…転がり軸受 ７ｃ…転動体 ９…潤滑油供給源 １１ｃ、１３ｃ、１５ｃ…ノズル部 ２３…保持器 ２３ａ…環状溝 ２３ｂ…潤滑油供給孔 DESCRIPTION OF SYMBOLS 1 ... Spindle device 3 ... Spindle housing 3a ... Lubricating oil supply path 3b ... Lubricating oil recovery path 5 ... Spindle 7 ... Rolling bearing 7c ... Rolling element 9 ... Lubricating oil supply source 11c, 13c, 15c ... Nozzle part 23 ... Cage 23a ... annular groove 23b ... lubricating oil supply hole
Claims (1)
動体を保持する保持器とを具備する転がり軸受におい
て、前記保持器の少なくとも一方の端面に環状溝を形成
し、前記環状溝から前記転動体を臨むように潤滑油供給
孔を穿設し、前記環状溝と潤滑油供給孔を通して前記転
動体へ向けて潤滑油を供給するように構成した転がり軸
受。1. A rolling bearing comprising a rolling element disposed between an inner ring and an outer ring, and a retainer for retaining the rolling element, wherein an annular groove is formed on at least one end surface of the retainer. A rolling bearing having a lubricating oil supply hole formed so as to face the rolling element from an annular groove, and supplying lubricating oil toward the rolling element through the annular groove and the lubricating oil supply hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9340361A JPH11173336A (en) | 1997-12-10 | 1997-12-10 | Rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9340361A JPH11173336A (en) | 1997-12-10 | 1997-12-10 | Rolling bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11173336A true JPH11173336A (en) | 1999-06-29 |
Family
ID=18336215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9340361A Pending JPH11173336A (en) | 1997-12-10 | 1997-12-10 | Rolling bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11173336A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006088054A1 (en) * | 2005-02-15 | 2006-08-24 | Jtekt Corporation | Rolling bearing device |
| CN103438094A (en) * | 2013-08-10 | 2013-12-11 | 江苏江海机床集团有限公司 | Machine tool spindle bearing structure |
| EP2562437A3 (en) * | 2011-08-25 | 2016-07-20 | United Technologies Corporation | Angular contact ball bearing |
-
1997
- 1997-12-10 JP JP9340361A patent/JPH11173336A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006088054A1 (en) * | 2005-02-15 | 2006-08-24 | Jtekt Corporation | Rolling bearing device |
| JP2006226311A (en) * | 2005-02-15 | 2006-08-31 | Jtekt Corp | Rolling bearing device |
| EP1850020A1 (en) * | 2005-02-15 | 2007-10-31 | JTEKT Corporation | Rolling bearing device |
| US7909513B2 (en) | 2005-02-15 | 2011-03-22 | Jtekt Corporation | Rolling bearing device |
| EP1850020A4 (en) * | 2005-02-15 | 2011-06-29 | Jtekt Corp | Rolling bearing device |
| EP2562437A3 (en) * | 2011-08-25 | 2016-07-20 | United Technologies Corporation | Angular contact ball bearing |
| CN103438094A (en) * | 2013-08-10 | 2013-12-11 | 江苏江海机床集团有限公司 | Machine tool spindle bearing structure |
| CN103438094B (en) * | 2013-08-10 | 2016-12-28 | 江苏江海机床集团有限公司 | Machine tool mainshaft bearing structure |
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