JP2016070346A - Cylindrical roller bearing - Google Patents

Cylindrical roller bearing Download PDF

Info

Publication number
JP2016070346A
JP2016070346A JP2014199233A JP2014199233A JP2016070346A JP 2016070346 A JP2016070346 A JP 2016070346A JP 2014199233 A JP2014199233 A JP 2014199233A JP 2014199233 A JP2014199233 A JP 2014199233A JP 2016070346 A JP2016070346 A JP 2016070346A
Authority
JP
Japan
Prior art keywords
pocket
cage
cylindrical roller
roller bearing
raceway surface
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
Application number
JP2014199233A
Other languages
Japanese (ja)
Other versions
JP2016070346A5 (en
Inventor
愛子 鈴木
Aiko Suzuki
愛子 鈴木
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.)
NSK Ltd
Original Assignee
NSK Ltd
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 NSK Ltd filed Critical NSK Ltd
Priority to JP2014199233A priority Critical patent/JP2016070346A/en
Publication of JP2016070346A publication Critical patent/JP2016070346A/en
Publication of JP2016070346A5 publication Critical patent/JP2016070346A5/ja
Pending legal-status Critical Current

Links

Images

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
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators

Landscapes

  • Rolling Contact Bearings (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a cylindrical roller bearing which uses an integrated machined cage which is light in own weight, reduces a PV value of a pocket part at a loading area, and can suppress the progress of the wear of the cage.SOLUTION: A cylindrical roller bearing 1 comprises: an outer ring 2 having an outer ring raceway surface 2a at an internal peripheral face; an inner ring 3 having an inner ring raceway surface 3a at an external peripheral face; a plurality of cylindrical rollers 4 which are rollingly arranged between the outer ring raceway surface 2a and the inner ring raceway surface 3a; a pair of disc parts 11; and a plurality of column parts 12 which connect the pair of disc parts 11. The cylindrical roller bearing also comprises a metal-made integrated machined cage 10 in which a pocket P is formed of the adjacent column parts 12 and the pair of disc parts 11. An inside-diameter part opening dimension Pi of the pocket P is larger than an outside-diameter part opening dimension Po of the pocket P, and smaller than a width of the pocket P in a pitch-circle diameter P.C.D. position Pc.SELECTED DRAWING: Figure 2

Description

本発明は、円筒ころ軸受、特に、鉄道車両の主電動機に使用可能な円筒ころ軸受に関する。   The present invention relates to a cylindrical roller bearing, and more particularly to a cylindrical roller bearing that can be used in a main motor of a railway vehicle.

近年、鉄道車両用軸受においては、高速回転かつ長期メンテナンスフリーが求められている。特に、主電動機用軸受については、軸受の回帰延伸や使用条件の過酷化により、潤滑不良から保持器ポケット摩耗が進行すると、保持器が振れ回り、外輪と接触して、保持器の円環部や柱部が破損し、転がり機能を有することができなくなる可能性がある。特に、主電動機で用いられる円筒ころ軸受は、機内側で使用されることから、温度環境が高く、潤滑状態はより過酷である。   In recent years, bearings for railway vehicles are required to be high-speed rotation and long-term maintenance-free. In particular, for bearings for main motors, if the cage pocket wear progresses due to poor lubrication due to regressive stretching of the bearing or severe usage conditions, the cage swings and contacts the outer ring, causing the annular portion of the cage to Otherwise, the pillar part may be damaged, and it may not be possible to have a rolling function. In particular, since the cylindrical roller bearing used in the main motor is used inside the machine, the temperature environment is high and the lubrication state is more severe.

また、円筒ころ軸受に使用されるもみ抜き保持器としては、リベット付きのものや、一体型のものが知られている（例えば、特許文献１及び２参照。）。特許文献１に記載のリベット付きのものは、保持器本体とリングプレートとをリベットによって結合するもので、保持器の表面にバレル研磨が施されている。また、特許文献２に記載の一体型のものでは、ポケットを削成したのち、隅部をエンドミルで加工することが記載されており、柱部の側面を円弧状とし、隅部を柱部の側面と平行として、保持器の強度アップを図っている。   Further, as a machined cage used for a cylindrical roller bearing, those with rivets and those with an integral type are known (for example, see Patent Documents 1 and 2). The thing with a rivet of patent document 1 couple | bonds a retainer main body and a ring plate with a rivet, and barrel polishing is given to the surface of the retainer. In addition, in the integrated type described in Patent Document 2, it is described that after the pocket is cut, the corner is processed by an end mill, the side surface of the column portion is formed in an arc shape, and the corner portion of the column portion is formed. The strength of the cage is increased in parallel with the side surface.

特開平１１−２９４４６０号公報JP 11-294460 A 特開２００６−１３８３７９号公報JP 2006-138379 A

ところで、図３に示すように、従来の円筒ころ軸受１００では、円筒ころ１０１を保持する保持器１０２のポケット形状が単純な球面形状に形成されている。即ち、図３（ｂ）に示すように、ポケットＰの内径部開口寸法Ｐｉが、ポケットＰの外径部開口寸法Ｐｏよりも小さく、保持器１０２は、負荷圏における各ポケットＰの内径側縁部Ｐ１で円筒ころ１０１を支えている。そのため、保持器１０２のポケットＰところ接触部のＰＶ値が高くなり、保持器１０２のポケット摩耗が過酷な状況となるという問題がある。
また、リベット付きもみ抜き保持器では、一体型のもみ抜き保持器に比べて保持器自重が重くなるため、さらにＰＶ値が高くなり、保持器の摩耗が進展する可能性がある。 By the way, as shown in FIG. 3, in the conventional cylindrical roller bearing 100, the pocket shape of the holder | retainer 102 holding the cylindrical roller 101 is formed in the simple spherical shape. That is, as shown in FIG. 3B, the inner diameter opening Pi of the pocket P is smaller than the outer diameter opening Po of the pocket P, and the cage 102 has an inner edge of each pocket P in the load zone. The cylindrical roller 101 is supported by the part P1. Therefore, there is a problem that the pocket P of the cage 102 has a high PV value at the contact portion, and the pocket wear of the cage 102 becomes severe.
Further, in the machined cage with rivets, the weight of the cage becomes heavier than that of the integrated machined cage, so that the PV value becomes higher and the wear of the cage may progress.

本発明は、前述した課題に鑑みてなされたものであり、その目的は、保持器自重の小さい一体型のもみ抜き保持器を用い、負荷圏におけるポケット部のＰＶ値を低減させ、保持器の摩耗進展を抑制することができる円筒ころ軸受を提供することにある。   The present invention has been made in view of the above-described problems, and an object of the present invention is to reduce the PV value of the pocket portion in the load zone by using an integrated machined cage having a small cage weight. An object of the present invention is to provide a cylindrical roller bearing capable of suppressing the progress of wear.

本発明の上記目的は、下記の構成により達成される。
（１） 内周面に外輪軌道面を有する外輪と、
外周面に内輪軌道面を有する内輪と、
前記外輪軌道面と前記内輪軌道面との間に転動自在に配置される複数の円筒ころと、
一対の円環部、及び、該一対の円環部との間を繋ぐ、円周方向に所定の間隔で設けられた複数の柱部を備え、隣接する前記柱部と前記一対の円環部とによってポケットを形成する金属製の一体型もみぬき保持器と、
を備える円筒ころ軸受であって、
前記一体型もみぬき保持器では、前記ポケットの内径部開口寸法が、前記ポケットの外径部開口寸法よりも大きく、且つ、前記ポケットのピッチ円直径位置での幅より小さいことを特徴とする円筒ころ軸受。 The above object of the present invention can be achieved by the following constitution.
(1) an outer ring having an outer ring raceway surface on the inner circumferential surface;
An inner ring having an inner ring raceway surface on the outer peripheral surface;
A plurality of cylindrical rollers arranged to roll freely between the outer ring raceway surface and the inner ring raceway surface;
A pair of annular portions, and a plurality of pillar portions provided at predetermined intervals in the circumferential direction that connect between the pair of annular portions, the adjacent pillar portions and the pair of annular portions A metal integrated rice brace that forms a pocket by
A cylindrical roller bearing comprising:
In the above-mentioned integrated grind cage, the inner diameter opening size of the pocket is larger than the outer diameter opening size of the pocket and smaller than the width at the pitch circle diameter position of the pocket. Roller bearing.

本発明の円筒ころ軸受によれば、一体型もみぬき保持器を用いることで、保持器自重を低減することができ、また、ポケットの内径部開口寸法が、ポケットの外径部開口寸法よりも大きいので、非負荷圏にてポケットが円筒ころを支持することができ、負荷圏におけるポケットのころ接触部のＰＶ値を低減させ、保持器の摩耗進展を抑制することができる。
また、ポケットの内径部開口寸法が、ポケットのピッチ円直径位置での幅より小さいので、円筒ころの抜け止めを行うことができる。 According to the cylindrical roller bearing of the present invention, the self-weight of the cage can be reduced by using the integrated milled cage, and the pocket inner diameter opening dimension is larger than the pocket outer diameter section opening dimension. Since it is large, the pocket can support the cylindrical roller in the non-load zone, the PV value of the roller contact portion of the pocket in the load zone can be reduced, and the progress of wear of the cage can be suppressed.
Further, since the opening size of the inner diameter portion of the pocket is smaller than the width at the pitch circle diameter position of the pocket, the cylindrical roller can be prevented from coming off.

本発明の一実施形態に係る円筒ころ軸受の断面図である。It is sectional drawing of the cylindrical roller bearing which concerns on one Embodiment of this invention. （ａ）は、円筒ころ軸受の側面図であり、（ｂ）は、（ａ）の非負荷圏における軸方向中間部の断面図である。(A) is a side view of a cylindrical roller bearing, (b) is sectional drawing of the axial direction intermediate part in the non-load zone of (a). （ａ）は、従来の円筒ころ軸受の側面図であり、（ｂ）は、（ａ）の負荷圏における軸方向中間部の断面図である。(A) is a side view of a conventional cylindrical roller bearing, and (b) is a cross-sectional view of an intermediate portion in the axial direction in the load zone of (a).

以下、本発明の一実施形態に係る円筒ころ軸受について、図面に基づき詳細に説明する。   Hereinafter, a cylindrical roller bearing according to an embodiment of the present invention will be described in detail with reference to the drawings.

図１及び図２に示すように、本実施形態の円筒ころ軸受１は、鉄道車両の主電動機に使用されるもので、内周面に外輪軌道面２ａを有する外輪２と、外周面に内輪軌道面３ａを有する内輪３と、外輪軌道面２ａと内輪軌道面３ａとの間に転動自在に配置される複数の円筒ころ４と、複数の円筒ころ４を所定の間隔で収容保持する複数のポケットＰを画成する一体型もみ抜き保持器１０と、を有する。   As shown in FIGS. 1 and 2, a cylindrical roller bearing 1 according to this embodiment is used for a main motor of a railway vehicle, and includes an outer ring 2 having an outer ring raceway surface 2a on an inner peripheral surface and an inner ring on an outer peripheral surface. An inner ring 3 having a raceway surface 3a, a plurality of cylindrical rollers 4 that are rotatably arranged between the outer ring raceway surface 2a and the inner ring raceway surface 3a, and a plurality that accommodates and holds the plurality of cylindrical rollers 4 at predetermined intervals. And an integrated machined cage 10 that defines a pocket P.

一体型のもみ抜き保持器１０は、黄銅など金属製からなり、機械加工によって形成される。また、もみ抜き保持器１０は、軸方向に離間した一対の円環部１１と、一対の円環部１１との間を繋ぐ、円周方向に所定の間隔で設けられた複数の柱部１２と、備え、ポケットＰは、隣接する柱部１２と一対の円環部１１とによって形成される。   The integrated machined cage 10 is made of metal such as brass and is formed by machining. Further, the machined cage 10 includes a plurality of column portions 12 that are provided at predetermined intervals in the circumferential direction and connect between the pair of annular portions 11 that are spaced apart in the axial direction and the pair of annular portions 11. And the pocket P is formed by the adjacent column portion 12 and the pair of annular portions 11.

さらに、一体型もみぬき保持器１０では、図２（ｂ）に示すように、ポケットＰの隣接する柱部１２間の内径部開口寸法Ｐｉが、ポケットＰの隣接する柱部１２間の外径部開口寸法Ｐｏよりも大きく、且つ、ポケットＰの隣接する柱部１２間のピッチ円直径Ｐ．Ｃ．Ｄ．位置での最大幅Ｐｃより小さく設定されている。   Further, in the integrated type rice bran retainer 10, as shown in FIG. 2B, the inner diameter opening dimension Pi between the column portions 12 adjacent to the pocket P is equal to the outer diameter between the column portions 12 adjacent to the pocket P. The pitch circle diameter P.P. is larger than the part opening dimension Po and between the adjacent column parts 12 of the pocket P. C. D. It is set smaller than the maximum width Pc at the position.

これにより、図２（ａ）及び図２（ｂ）に示す円筒ころ軸受１の非負荷圏において、ポケットＰが外径側縁部Ｐ２にて円筒ころ４を支持することができる。したがって、負荷圏におけるポケットＰと円筒ころ４との接触部でのＰＶ値を低減させることができ、保持器１０の摩耗進展を抑制することができる。特に、一体型のもみ抜き保持器１０は、リベット付きの保持器に比べて、保持器自重を低減させることができるので、保持器１０の摩耗進展をより抑制することができる。   Thereby, in the non-load zone of the cylindrical roller bearing 1 shown to Fig.2 (a) and FIG.2 (b), the pocket P can support the cylindrical roller 4 in the outer diameter side edge part P2. Therefore, the PV value at the contact portion between the pocket P and the cylindrical roller 4 in the load zone can be reduced, and the progress of wear of the cage 10 can be suppressed. In particular, the integrated machined cage 10 can reduce its own weight as compared with a rivet-equipped cage, and thus can further suppress wear progress of the cage 10.

また、ポケットＰの内径部開口寸法Ｐｉが、ポケットＰのピッチ円直径Ｐ．Ｃ．Ｄ．位置での最大幅Ｐｃより小さいので、円筒ころ４の抜け止めを行うことができ、組み立て性を向上することができる。   Further, the opening diameter Pi of the inner diameter portion of the pocket P is equal to the pitch circle diameter P.P. C. D. Since it is smaller than the maximum width Pc at the position, it is possible to prevent the cylindrical roller 4 from coming off and to improve the assemblability.

さらに、一体型のもみ抜き保持器１０は、機械加工によって形成されるので、保持器ポケット形状の加工精度をあげることにより、隅部の最適設計と製造が可能となることで、保持器強度を向上することができる。   Further, since the integrated machined cage 10 is formed by machining, the corner pocket can be optimally designed and manufactured by increasing the machining accuracy of the cage pocket shape, thereby increasing the cage strength. Can be improved.

以上説明したように、本実施形態の円筒ころ軸受１によれば、一体型もみぬき保持器１０を用いることで、保持器自重を低減することができ、また、ポケットＰの内径部開口寸法Ｐｉが、ポケットＰの外径部開口寸法Ｐｏよりも大きいので、非負荷圏にてポケットＰが円筒ころ４を支持することができ、負荷圏におけるポケットＰのころ接触部のＰＶ値を低減させ、保持器１０の摩耗進展を抑制することができる。また、ポケットＰの内径部開口寸法Ｐｉが、ポケットＰのピッチ円直径Ｐ．Ｃ．Ｄ．位置Ｐｃでの最大幅より小さいので、円筒ころ４の抜け止めを行うことができる。   As described above, according to the cylindrical roller bearing 1 of the present embodiment, the self-weight of the cage can be reduced by using the integrated milled cage 10, and the inner diameter opening dimension Pi of the pocket P can be reduced. Is larger than the outer diameter opening dimension Po of the pocket P, so that the pocket P can support the cylindrical roller 4 in the non-load zone, and the PV value of the roller contact portion of the pocket P in the load zone is reduced. Wear progress of the cage 10 can be suppressed. Further, the opening diameter Pi of the inner diameter portion of the pocket P is equal to the pitch circle diameter P.P. C. D. Since it is smaller than the maximum width at the position Pc, the cylindrical roller 4 can be prevented from coming off.

なお、本発明は、上述した実施形態に限定されるものでなく、適宜、変形、改良などが可能である。   In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably.

１ 円筒ころ軸受
２ 外輪
２ａ 外輪軌道面
３ 内輪
３ａ 内輪軌道面
４ 円筒ころ
１０ もみ抜き用保持器
１１ 円環部
１２ 柱部
Ｐｃ ポケットのピッチ円直径位置での幅
Ｐｉ ポケットの内径部開口寸法
Ｐｏ ポケットの外径部開口寸法 DESCRIPTION OF SYMBOLS 1 Cylindrical roller bearing 2 Outer ring 2a Outer ring raceway surface 3 Inner ring 3a Inner ring raceway surface 4 Cylindrical roller 10 Cage removal cage 11 Annular part 12 Column part Pc Pitch of pocket Pitch circle diameter position Pi Inside diameter part opening size Po of pocket Pocket outside diameter opening dimensions

Claims (1)

内周面に外輪軌道面を有する外輪と、
外周面に内輪軌道面を有する内輪と、
前記外輪軌道面と前記内輪軌道面との間に転動自在に配置される複数の円筒ころと、
一対の円環部、及び、該一対の円環部との間を繋ぐ、円周方向に所定の間隔で設けられた複数の柱部を備え、隣接する前記柱部と前記一対の円環部とによってポケットを形成する金属製の一体型もみぬき保持器と、
を備える円筒ころ軸受であって、
前記一体型もみぬき保持器では、前記ポケットの内径部開口寸法が、前記ポケットの外径部開口寸法よりも大きく、且つ、前記ポケットのピッチ円直径位置での幅より小さいことを特徴とする円筒ころ軸受。
An outer ring having an outer ring raceway surface on the inner circumferential surface;
An inner ring having an inner ring raceway surface on the outer peripheral surface;
A plurality of cylindrical rollers arranged to roll freely between the outer ring raceway surface and the inner ring raceway surface;
A pair of annular portions, and a plurality of pillar portions provided at predetermined intervals in the circumferential direction that connect between the pair of annular portions, the adjacent pillar portions and the pair of annular portions A metal integrated rice brace that forms a pocket by
A cylindrical roller bearing comprising:
In the above-mentioned integrated grind cage, the inner diameter opening size of the pocket is larger than the outer diameter opening size of the pocket and smaller than the width at the pitch circle diameter position of the pocket. Roller bearing.
JP2014199233A 2014-09-29 2014-09-29 Cylindrical roller bearing Pending JP2016070346A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2014199233A JP2016070346A (en) 2014-09-29 2014-09-29 Cylindrical roller bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014199233A JP2016070346A (en) 2014-09-29 2014-09-29 Cylindrical roller bearing

Publications (2)

Publication Number Publication Date
JP2016070346A true JP2016070346A (en) 2016-05-09
JP2016070346A5 JP2016070346A5 (en) 2017-11-09

Family

ID=55866501

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2014199233A Pending JP2016070346A (en) 2014-09-29 2014-09-29 Cylindrical roller bearing

Country Status (1)

Country Link
JP (1) JP2016070346A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53103058U (en) * 1977-09-16 1978-08-19
JPH11294460A (en) * 1998-04-13 1999-10-26 Ntn Corp Rolling bearing
JP2006138379A (en) * 2004-11-11 2006-06-01 Ntn Corp Cylindrical roller bearing for rolling stock
JP2007327518A (en) * 2006-06-06 2007-12-20 Ntn Corp Cylindrical roller bearing and its cage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53103058U (en) * 1977-09-16 1978-08-19
JPH11294460A (en) * 1998-04-13 1999-10-26 Ntn Corp Rolling bearing
JP2006138379A (en) * 2004-11-11 2006-06-01 Ntn Corp Cylindrical roller bearing for rolling stock
JP2007327518A (en) * 2006-06-06 2007-12-20 Ntn Corp Cylindrical roller bearing and its cage

Similar Documents

Publication Publication Date Title
WO2013051696A1 (en) Rolling bearing
JP2013015200A (en) Conical roller bearing
JP2008232295A (en) Tapered roller bearing
JP2015102144A (en) Self-aligning roller bearing
JP2011094716A (en) Thrust roller bearing
WO2013128662A1 (en) Angular contact ball bearing
JP2008267400A (en) Ball bearing
WO2015016345A1 (en) Roller bearing and method for producing roller bearing
JP2016070346A (en) Cylindrical roller bearing
WO2017208908A1 (en) Roller bearing
JP2016138602A (en) Conical roller bearing
JP2006112555A (en) Roller bearing with aligning ring
JP2017078480A (en) Self-aligning roller bearing
JP2012172784A (en) Ball bearing
JP2013015201A (en) Conical bearing
JP2010025183A (en) Self-aligning roller bearing
JP2014202302A (en) Cage for conical roller bearing and conical roller bearing
JP5810627B2 (en) Tandem angular ball bearings and outer ring side assemblies for tandem angular ball bearings
JP2014194244A (en) Self-aligning roller bearing
JP2010270884A (en) Cage for radial needle bearing and radial needle bearing
WO2014189042A1 (en) Conical roller bearing
JP2007321911A (en) Cage for bearing
JP5703494B2 (en) Ball bearing
JP2013130242A (en) Thrust roller bearing
JP2015218748A (en) Thrust conical roller bearing

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20170929

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20170929

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20180614

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20180626

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20181225