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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4131312B2 (en) | Bearing device | |
US6176349B1 (en) | Bearing lubricating device | |
SE439347B (en) | SHIELD STORAGE CONSTRUCTION FOR HIGH-SPEED AXLAR ROTATING | |
JP6206616B2 (en) | Spindle device and machine tool | |
JP3489847B2 (en) | Bearing device | |
US4844625A (en) | Structure of journal bearing for motor operating at high revolutionary speeds | |
JP2008286270A (en) | Lubricating device for roller bearing | |
JP2008291970A (en) | Rolling bearing device | |
JP3521396B2 (en) | Spindle device with built-in motor for machine tools | |
JP3452947B2 (en) | Bearing lubrication mechanism of main shaft device | |
JPH11173336A (en) | Rolling bearing | |
JP2740304B2 (en) | Lubrication system for angular contact ball bearings | |
JP2005034964A (en) | Tool holder | |
JP2006226486A (en) | Lubricating device of rolling bearing | |
JP2001165177A (en) | Bearing lubricating device | |
JP2562894Y2 (en) | Rolling bearing | |
WO2019188621A1 (en) | Cooling structure for bearing device | |
JP4527622B2 (en) | Rolling bearing lubrication system | |
JP5338209B2 (en) | Machine tool spindle equipment | |
JP5003087B2 (en) | Motor built-in spindle | |
JP2005201346A (en) | Rolling bearing lubricating structure | |
JP2005133753A (en) | Bearing device, and rolling bearing used therein | |
JP2003278771A (en) | Rolling bearing device | |
JP2007303571A (en) | Tapered roller bearing lubricating structure | |
JPH0610212Y2 (en) | Bearing cooling system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20040106 |