JPH11347863A - Rotary bearing and main shaft device using it - Google Patents

Rotary bearing and main shaft device using it

Info

Publication number
JPH11347863A
JPH11347863A JP10152383A JP15238398A JPH11347863A JP H11347863 A JPH11347863 A JP H11347863A JP 10152383 A JP10152383 A JP 10152383A JP 15238398 A JP15238398 A JP 15238398A JP H11347863 A JPH11347863 A JP H11347863A
Authority
JP
Japan
Prior art keywords
lubricating oil
rotary bearing
bearing
frames
rotating
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
Application number
JP10152383A
Other languages
Japanese (ja)
Other versions
JP4342612B2 (en
Inventor
Shinichi Yokoi
横井信一
Koichi Amaya
天谷浩一
Kikuta Yamada
山田菊太
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Matsuura Machinery Corp
Matsuura Kikai Seisakusho KK
Original Assignee
Matsuura Machinery Corp
Matsuura Kikai Seisakusho KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsuura Machinery Corp, Matsuura Kikai Seisakusho KK filed Critical Matsuura Machinery Corp
Priority to JP15238398A priority Critical patent/JP4342612B2/en
Publication of JPH11347863A publication Critical patent/JPH11347863A/en
Application granted granted Critical
Publication of JP4342612B2 publication Critical patent/JP4342612B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F16C33/6681—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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • 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
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/26—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Units (AREA)
  • Rolling Contact Bearings (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Turning (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a structure of a rotary bearing which can prevent excess condition of lubricating oil from causing overheat condition and failure, in turn. SOLUTION: The rotary bearing has rotating rollers 10 placed between an outer ring and an inner ring and both ring-shaped frames 3 for guiding the rotating rollers on the both sides of the rotating rollers. Based on formation of a discharge hole of lubricating oil or a discharge groove 4 on at least one of the both frames, in the both frames, the rotary bearing which can prevent excess condition of lubricating oil and a main shaft device using it are provided.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、工作機械等におい
て使用する回転ベアリングの構造の改良及び当該回転ベ
アリングを使用した主軸装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in the structure of a rotary bearing used in a machine tool or the like, and a spindle device using the rotary bearing.

【０００２】[0002]

【従来の技術】工作機械において使用する主軸装置５の
主軸等は、高速回転を行うが、このような高速回転軸を
円滑に支持するためのベアリングは、図４に示すよう
に、内輪２１と外輪２２との間に回転コロ１０が介在
し、内輪２１、外輪２２の少なくともいずれか一方を回
転自在とし、かつ回転コロ１０の両側には、回転コロ１
０をガイドする輪状の両枠が設けられている。2. Description of the Related Art The spindle of a spindle device 5 used in a machine tool rotates at a high speed, and a bearing for smoothly supporting such a high-speed rotating shaft is, as shown in FIG. The rotating roller 10 is interposed between the outer ring 22 and at least one of the inner ring 21 and the outer ring 22 so as to be rotatable.
The two annular frames that guide the zero are provided.

【０００３】しかして、このような回転コロ１０におい
ては、潤滑油が使用され、特に高速回転の場合には、オ
イルエアー方式によって、空気流に従って、潤滑用のオ
イルが噴霧状態にて前記輪状の両枠の一方側から供給さ
れている。[0003] In such a rotating roller 10, lubricating oil is used. In particular, in the case of high-speed rotation, the lubricating oil is sprayed in accordance with an air flow by an oil-air system in the form of a ring. It is supplied from one side of both frames.

【０００４】しかして、このようにして供給された潤滑
油は、輪状の両枠内に保持され、しかも排出が妨げられ
るという傾向を免れることができない。[0004] However, the lubricating oil supplied in this manner cannot be escaped from being held in the two annular frames and being prevented from being discharged.

【０００５】その結果として、回転ベアリング１内にお
いて、潤滑油過多の状態となり、潤滑油の攪拌状態が発
生し、当該攪拌熱によって、ベアリング温度が上昇し、
ひいては、ベアリングが破壊するという現象も決して稀
ではない。[0005] As a result, the lubricating oil becomes excessive in the rotary bearing 1, and the lubricating oil is agitated, and the stirring heat causes the bearing temperature to rise.
Eventually, bearing failure is not uncommon.

【０００６】[0006]

【発明が解決しようとする課題】本発明は、このような
従来技術の問題点を克服し、前期潤滑油の攪拌状態、ひ
いては、当該攪拌に基づくベアリング温度の上昇を原因
とする回転ベアリングの破壊を防止することができる回
転ベアリングの構成及び当該回転ベアリングを使用した
主軸装置を提供することを課題とするものである。SUMMARY OF THE INVENTION The present invention overcomes the above-mentioned problems of the prior art, and provides a stirring state of the lubricating oil and a breakage of the rotating bearing due to an increase in the bearing temperature due to the stirring. It is an object of the present invention to provide a configuration of a rotary bearing capable of preventing the occurrence of a rotation and a spindle device using the rotary bearing.

【０００７】[0007]

【課題を解決するための手段】前記課題を解決するた
め、本発明の構成は、（１） 外輪と内輪との間に回転
コロが介在し、かつ回転コロの両側に該回転コロに対す
るガイドを行っている輪状の両枠を有する回転ベアリン
グにおいて、該両枠の少なくとも一方に、潤滑油の排出
用孔又は排出用溝を設けたことに基づく回転ベアリン
グ、（２） 前記（１）の回転ベアリング１を使用した
主軸装置、からなる。Means for Solving the Problems In order to solve the above-mentioned problems, the constitution of the present invention is as follows. (1) A rotating roller is interposed between an outer ring and an inner ring, and guides for the rotating roller are provided on both sides of the rotating roller. (2) The rotary bearing according to (1), wherein the rotary bearing is provided with a lubricating oil discharge hole or a discharge groove in at least one of the two frames. 1 using a spindle device.

【０００８】[0008]

【発明の実施の形態】前記のように、収入された潤滑油
は、回転コロ１０を保持する両側の存在によって、排出
が可能となっている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As described above, the lubricating oil that has been generated can be discharged by the existence of both sides holding the rotating roller 10.

【０００９】従って、前記（１）の回転コロにおいて
は、当該両側の一方又は両方に、潤滑油通過用の口又は
溝を設けることを基本的な実施態様とし、かつこれによ
って潤滑油を外部に散逸させ、ひいては前記のような潤
滑油が貯留して、過多の状態となることを防止すること
を基本的な技術思想としており、前記（２）の主軸装置
は、このような回転コロを採用することを基本的な実施
態様とし、かつ前記作用効果を主軸装置において発揮す
ることを基本的な技術思想とするものである。Therefore, in the above-mentioned rotary roller (1), it is a basic embodiment to provide a lubricating oil passage opening or groove on one or both of the both sides, and thereby the lubricating oil is externally provided. The basic technical idea is to dissipate and eventually prevent the above-mentioned lubricating oil from accumulating and becoming excessive, and the spindle device of (2) employs such a rotating roller. The basic technical idea is to perform the above-described functions and effects in the spindle device.

【００１０】[0010]

【実施例１】実施例１においては、図１に示すように、
回転コロ１０をガイドする両側枠の一方に、潤滑油が通
過する溝４を設けた構成を示す。Embodiment 1 In Embodiment 1, as shown in FIG.
A configuration is shown in which a groove 4 through which lubricating oil passes is provided on one of both side frames that guide the rotating roller 10.

【００１１】このような溝を設置することによって、回
転ベアリング１内の潤滑油は、過多の状態となる以前
に、当該溝を介して、外部に漏洩し、前記従来技術の如
き温度上昇、ひいては回転ベアリング１の損傷という事
故を免れることができる。By providing such a groove, the lubricating oil in the rotary bearing 1 leaks to the outside through the groove before it becomes excessive, thereby increasing the temperature as in the above-mentioned prior art. The accident of damage to the rotating bearing 1 can be avoided.

【００１２】[0012]

【実施例２】実施例２は、図２に示すように、回転コロ
１０をガイドする両側枠の両方側に潤滑油が通過する口
４を設けた構成を示す。Embodiment 2 In Embodiment 2, as shown in FIG. 2, an arrangement is provided in which ports 4 through which lubricating oil passes are provided on both sides of both side frames for guiding the rotating rollers 10. As shown in FIG.

【００１３】これによる効果もまた、実施例１の場合と
概略同一である。The effect of this is also substantially the same as that of the first embodiment.

【００１４】[0014]

【実施例３】実施例３は、図３に示すような主軸装置５
として、実施例１及び同２に示す回転ベアリング１を採
用した場合を示す。[Embodiment 3] In Embodiment 3, a spindle device 5 as shown in FIG.
The case where the rotary bearing 1 shown in the first embodiment and the second embodiment is adopted is shown.

【００１５】実施例３においては、前記実施例１及び同
２の効果を主軸装置５において享受することができる。In the third embodiment, the effects of the first and second embodiments can be enjoyed in the spindle device 5.

【００１６】前記実施例１、２の場合のように、本願発
明においては、潤滑油が通過する溝又は口４を設けて、
回転ベアリング１内の潤滑油の量を適切に維持する訳で
あるが、溝又は口４を設ける個数及び大きさは、供給さ
れる潤滑油の量、回転速度等に応じて、具体的に設定す
ることが肝要である。As in the first and second embodiments, in the present invention, a groove or port 4 through which lubricating oil passes is provided,
Although the amount of the lubricating oil in the rotary bearing 1 is appropriately maintained, the number and size of the grooves or the ports 4 are specifically set according to the amount of the lubricating oil supplied, the rotation speed, and the like. It is important to do it.

【００１７】尚、実施例１、２においては、個々の回転
コロ１０が、それぞれ柱を介して、分離され、回転コロ
１０同士が相互に接触しないように設定されているが、
潤滑油が通過する溝又は口４は、各柱によって隔てられ
た回転コロ１０毎に設ける必要はない。In the first and second embodiments, the individual rotating rollers 10 are separated from each other via columns, and the rotating rollers 10 are set so as not to contact each other.
The grooves or ports 4 through which the lubricating oil passes need not be provided for each rotating roller 10 separated by each column.

【００１８】これは、潤滑油自体は、各柱によって隔て
られた回転コロ１０毎の部位に貯留する訳ではなく、回
転ベアリング１全体にわたって流動していることに由来
している。This is due to the fact that the lubricating oil itself does not accumulate in each part of the rotating roller 10 separated by each column, but flows throughout the rotating bearing 1.

【００１９】[0019]

【発明の効果】以上の如き本願発明においては、回転ベ
アリング内における潤滑油の過多状態を防止し、逆に潤
滑油の適性量を維持することによって、潤滑油の攪拌状
態の発生、ひいては、回転ベアリングの温度上昇、更に
は、回転ベアリングの破壊を防止することができる。According to the present invention as described above, by preventing the excessive amount of the lubricating oil in the rotary bearing and maintaining the appropriate amount of the lubricating oil, the generation of the agitated state of the lubricating oil and, consequently, the rotation It is possible to prevent the temperature of the bearing from rising, and further prevent the rotary bearing from being broken.

【００２０】特に、主軸装置５の場合のように、長期に
わたって回転ベアリング１を作動させる場合には、本願
発明の回転ベアリング１を採用することによって、長期
の安全運転を実演することができる。In particular, when the rotary bearing 1 is operated for a long period of time as in the case of the spindle device 5, long-term safe operation can be demonstrated by employing the rotary bearing 1 of the present invention.

【００２１】このように、本件発明は、潤滑油を排出す
るための溝又は口を設けるという比較的簡単な構成であ
りながら、上記の如き極めて重要な作用効果を発揮する
ので本件発明の価値は絶大である。As described above, although the present invention has a relatively simple structure in which a groove or a port for discharging lubricating oil is provided, the present invention exerts the above-mentioned extremely important functions and effects. It is overwhelming.

【図面の簡単な説明】[Brief description of the drawings]

【図１】実施例1の構成を示す斜視図である。FIG. 1 is a perspective view illustrating a configuration of a first embodiment.

【図２】実施例２の構成を示す斜視図である。FIG. 2 is a perspective view illustrating a configuration of a second embodiment.

【図３】実施例３において、回転コロを採用する主軸装
置の具体的構成を示す断面図である。FIG. 3 is a cross-sectional view showing a specific configuration of a spindle device employing a rotating roller in a third embodiment.

【図４】従来技術による回転ベアリングの構成を示した
図である。FIG. 4 is a diagram showing a configuration of a conventional rotary bearing.

【符号の説明】[Explanation of symbols]

１ 回転ベアリング １０ 回転コロ ２１ 内輪 ２２ 外輪 ３ 両側枠 ３１ 両側枠の内の回転コロ端面のガイド部分 ３２ 両側枠の回転コロ同士を隔てる柱部分 ３３ 両側枠の柱部分に設置された回転コロの円筒面
のガイド部分 ４ 潤滑油が通過する溝又は口 ５ 主軸装置 ５１ ドローバー ５２ コレットチャック ５３ 主軸 ５４ スリーブ ５５ サラばねDESCRIPTION OF SYMBOLS 1 Rotation bearing 10 Rotation roller 21 Inner ring 22 Outer ring 3 Side frame 31 Guide part of the end surface of rotation roller in both sides frame 32 Column part which separates rotation rollers of both sides frame 33 Cylinder of rotation roller installed in column part of both sides frame Guide portion of surface 4 Groove or port through which lubricating oil passes 5 Spindle device 51 Drawbar 52 Collet chuck 53 Spindle 54 Sleeve 55 Sarah spring

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 外輪と内輪との間に回転コロが介在し、
かつ回転コロの両側に該回転コロに対するガイドを行っ
ている輪状の両枠を有する回転ベアリングにおいて、該
両枠の少なくとも一方に、潤滑油の排出用孔又は排出用
溝を設けたことに基づく回転ベアリング。A rotating roller is interposed between an outer ring and an inner ring,
In addition, in a rotating bearing having both annular frames that guide the rotating rollers on both sides of the rotating rollers, rotation based on providing a lubricating oil discharging hole or a discharging groove in at least one of the two frames. bearing. 【請求項２】 外輪と内輪との間に回転コロが介在し、
かつ回転コロの両側に該回転コロに対するガイドを行っ
ている輪状の両枠を有する回転ベアリングにおいて、該
両枠の少なくとも一方に、潤滑油の排出用孔又は排出用
溝を設けたことに基づく回転ベアリングを使用した主軸
装置。2. A rotating roller is interposed between an outer ring and an inner ring,
In addition, in a rotating bearing having both annular frames that guide the rotating rollers on both sides of the rotating rollers, rotation based on providing a lubricating oil discharging hole or a discharging groove in at least one of the two frames. Spindle device using bearings.
JP15238398A 1998-06-02 1998-06-02 Rotating bearing and spindle device using the same Expired - Lifetime JP4342612B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15238398A JP4342612B2 (en) 1998-06-02 1998-06-02 Rotating bearing and spindle device using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15238398A JP4342612B2 (en) 1998-06-02 1998-06-02 Rotating bearing and spindle device using the same

Publications (2)

Publication Number Publication Date
JPH11347863A true JPH11347863A (en) 1999-12-21
JP4342612B2 JP4342612B2 (en) 2009-10-14

Family

ID=15539333

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15238398A Expired - Lifetime JP4342612B2 (en) 1998-06-02 1998-06-02 Rotating bearing and spindle device using the same

Country Status (1)

Country Link
JP (1) JP4342612B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6742934B2 (en) 2000-10-27 2004-06-01 Nsk Ltd. Rolling bearing and spindle apparatus for machine tool
DE10164937B4 (en) * 2000-10-27 2007-12-13 Nsk Ltd. Rolling bearing for supporting spindle of machine tool, satisfies preset inequality involving radial and axial lengths of retainer and pitch circle diameter of each roller held by retainer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6016632B2 (en) 2010-08-18 2016-10-26 日本精工株式会社 Rolling bearings and spindles for machine tools
US11884119B2 (en) 2019-01-28 2024-01-30 Hitachi Astemo, Ltd. Vehicle behavior device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6742934B2 (en) 2000-10-27 2004-06-01 Nsk Ltd. Rolling bearing and spindle apparatus for machine tool
DE10164937B4 (en) * 2000-10-27 2007-12-13 Nsk Ltd. Rolling bearing for supporting spindle of machine tool, satisfies preset inequality involving radial and axial lengths of retainer and pitch circle diameter of each roller held by retainer
DE10164937C5 (en) * 2000-10-27 2019-10-02 Nsk Ltd. Rolling bearing and spindle device for machine tool
USRE48843E1 (en) 2000-10-27 2021-12-07 Nsk Ltd. Rolling bearing and spindle apparatus for machine tool

Also Published As

Publication number Publication date
JP4342612B2 (en) 2009-10-14

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