JP2014159836A - Cage for rolling bearing - Google Patents

Cage for rolling bearing Download PDF

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Publication number
JP2014159836A
JP2014159836A JP2013030674A JP2013030674A JP2014159836A JP 2014159836 A JP2014159836 A JP 2014159836A JP 2013030674 A JP2013030674 A JP 2013030674A JP 2013030674 A JP2013030674 A JP 2013030674A JP 2014159836 A JP2014159836 A JP 2014159836A
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Japan
Prior art keywords
pockets
segment
diameter side
segments
roller bearing
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JP2013030674A
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Japanese (ja)
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Michio Hori
径生 堀
Katsunori Sone
克典 曽根
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NTN Corp
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NTN Corp
NTN Toyo Bearing Co Ltd
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Priority to JP2013030674A priority Critical patent/JP2014159836A/en
Publication of JP2014159836A publication Critical patent/JP2014159836A/en
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    • 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
    • F16C19/34—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 both radial and axial load
    • F16C19/36—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 both radial and axial load with a single row of rollers
    • F16C19/364—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 both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • 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
    • F16C33/50—Cages for rollers or needles formed of interconnected members, e.g. chains
    • F16C33/502—Cages for rollers or needles formed of interconnected members, e.g. chains formed of arcuate segments retaining one or more 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
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/10—Application independent of particular apparatuses related to size
    • F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm
    • 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
    • F16C2360/00—Engines or pumps
    • F16C2360/31—Wind motors
    • 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
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
    • F16C33/4635—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window cages

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent interference of segments and generation of excessive force on a connecting portion of the segments in configuring a cage by annularly connecting the segments to be used in a rolling bearing.SOLUTION: In a cage of a rolling bearing composed of two or more segments 18 disposed on the circumference, each segment 18 has two or more pockets 16 for holding conical rollers 15, and the pockets 16 of the segments 18 are provided with projecting portions for preventing falling of the conical rollers 15. The pockets at both ends of each segment are overlapped to the pockets 16 of the adjacent segments 18, and the conical rollers 15 are fitted in the overlapped pockets 16 to connect the segments to each other.

Description

この発明は、風力発電装置の主軸を支持する大型のころ軸受、特に円すいころ軸受や産業機械特に外径が１ｍを超えるような大型の円すいころ軸受に使用される保持器に関するものである。   The present invention relates to a cage used for a large roller bearing that supports a main shaft of a wind turbine generator, particularly a tapered roller bearing or an industrial machine, particularly a large tapered roller bearing having an outer diameter exceeding 1 m.

円すいころ軸受の保持器は、通常、鋼板の保持器が使用され、内輪と転動体は保持器によって一体化されている。   As a retainer of a tapered roller bearing, a retainer of a steel plate is usually used, and the inner ring and the rolling element are integrated by the retainer.

そのため、円すいころ軸受は、内輪と転動体と保持器を組み立てた内輪構成体と外輪とを、それぞれ別々に装置の軸、ハウジングに組込んでいる。   For this reason, in the tapered roller bearing, an inner ring structure and an outer ring in which an inner ring, a rolling element and a cage are assembled are separately incorporated in the shaft and housing of the device.

昨今、風力発電装置は、大型化の一途を辿っており、使用される軸受のサイズも大きくなっており、それに伴い量産するための製造設備も大きく変わることから、コストと機能を両立した設計仕様が望まれている。   In recent years, wind power generators have been getting larger and the size of the bearings used has increased, and the production facilities for mass production have changed drastically. Is desired.

ところで、鋼板の保持器は、通常プレス加工により製作されるが、外径１ｍを超えるような大型のサイズになると、設備上の問題によりプレス加工が難しくなる。また、強度面を確保するために、板厚を大きくしたくても、板厚に対する加工上の制約もあり、プレス加工には限界がある。一方、削り出し保持器では、プレス品と比較し、大幅なコストアップとなり、マテリアルロスの観点からも無駄が多くなる。   By the way, the steel plate cage is usually manufactured by press working. However, when the size is larger than the outer diameter of 1 m, the press working becomes difficult due to a problem in equipment. Further, even if it is desired to increase the plate thickness in order to secure the strength surface, there is a limitation in processing for the plate thickness, and there is a limit in press processing. On the other hand, the machined cage has a significant cost increase compared to the press product, and is wasteful from the viewpoint of material loss.

このような鋼板の保持器の課題を克服するため、円すいころ軸受の保持器を、円周上に２個以上配置される樹脂製のセグメントによって構成する場合もある。   In order to overcome the problem of the steel plate cage, the cage of the tapered roller bearing may be constituted by two or more resin segments arranged on the circumference.

ところが、保持器をセグメントに分割した場合、転動体がセグメント単位で分離してしまうので、内輪組み立て構成体と外輪とを一体化した状態で組み込みができるような特定のアプリケーションにしか適用できない。   However, when the cage is divided into segments, the rolling elements are separated in segment units, so that the cage can be applied only to a specific application in which the inner ring assembly structure and the outer ring can be assembled in an integrated state.

即ち、内輪組み立て構成体と外輪とを別々に、装置の軸やハウジングに組込むことができなくなるため、冶工具を用いて、軸受を組み立てた状態で装置に組込むなどの工夫が必要となる。その場合、冶工具は、軸やハウジングの組込み後に抜取るなどの作業ができない。   That is, since the inner ring assembly structure and the outer ring cannot be separately assembled into the shaft or housing of the apparatus, it is necessary to devise such as assembling the bearing into the apparatus in an assembled state using a jig tool. In that case, the jig cannot be removed after the shaft or housing is assembled.

一方、樹脂成形で１ｍを超えるような大型の一体リングを成形することはできないので、特許文献１〜３にもセグメント同士を連結して円環状態した保持器が開示されている。   On the other hand, since a large-sized integral ring exceeding 1 m cannot be formed by resin molding, Patent Documents 1 to 3 disclose a cage in which segments are connected to each other in an annular state.

特開２０１１−１４９５４９号公報JP 2011-149549 A 特開２００７−６４４３７号公報JP 2007-64437 A ＷＯ２００７１３１４７８Ａ２WO2007131478A2

しかしながら、特許文献１や特許文献２に開示されたセグメントタイプの保持器は、周辺スペースに余裕がない場合に、転動体のサイズを小さくしなければならず、機能面で円すいころ軸受の定格荷重の制約が発生するという問題がある。   However, the segment type cages disclosed in Patent Document 1 and Patent Document 2 have to reduce the size of the rolling elements when there is no margin in the surrounding space, and the functional load rating of the tapered roller bearing There is a problem that this restriction occurs.

また、特許文献３の保持器は、各セグメントの両端に、隣接するセグメントを連結する連結部を設けてセグメントを円環状に連結している。   Moreover, the cage | basket of patent document 3 provides the connection part which connects an adjacent segment in the both ends of each segment, and connects the segment in the annular | circular shape.

ところが、各セグメントの両端に、隣接するセグメントの連結部を順次連結し、最後の一個のセグメントを連結して円環状を完成させる場合に、最後の一個のセグメントを嵌め入れる隙間間隔が狭いと、セグメントが干渉して嵌らない可能性が生じる。逆に、最後の一個のセグメントを嵌め入れる隙間間隔が広すぎた場合に、隣り合うセグメントの連結部を無理やり連結すると、連結部に大きな力が発生し、連結部が破損したり、円環状に配置したセグメントに歪が生じる恐れがある。このため、各セグメントのポケットの寸法管理と共に、連結部の寸法管理もきっちりと行う必要があり、運用が困難である。   However, when connecting the connecting portions of adjacent segments to both ends of each segment in order, and connecting the last one segment to complete the annular shape, if the gap interval for fitting the last one segment is narrow, There is a possibility that the segments do not fit due to interference. On the other hand, if the gap between the last segment is too wide and the connecting portions of adjacent segments are forcibly connected, a large force is generated in the connecting portion, the connecting portion may be damaged, There is a risk of distortion in the arranged segments. For this reason, it is necessary to precisely manage the dimensions of the connecting portions as well as the dimensions of the pockets of each segment, which is difficult to operate.

そこで、この発明は、セグメントを円環状に連結する際に、セグメント同士が干渉せず、セグメントの連結部に無理な力が発生しない、大型のころ軸受、特に円すいころ軸受に使用される保持器を提供することを課題とする。   Accordingly, the present invention provides a cage used for a large roller bearing, particularly a tapered roller bearing, in which when the segments are connected in an annular shape, the segments do not interfere with each other and an excessive force is not generated in the connecting portion of the segments. It is an issue to provide.

前記の課題を解決するために、この発明は、円周上に２個以上配置されるセグメントによって構成されるころ軸受の保持器において、一つのセグメントには２個以上の転動体を保持するためのポケットを有し、各セグメントの両端のポケットを隣接するセグメントのポケットに重ね合わせ、重ね合わせたポケットに転動体を嵌め入れて各セグメントを互いに連結することを特徴とする。   In order to solve the above-described problems, the present invention provides a roller bearing retainer composed of two or more segments arranged on the circumference, in which one segment holds two or more rolling elements. The pockets at both ends of each segment are overlapped with the pockets of the adjacent segments, and rolling elements are fitted into the overlapped pockets to connect the segments to each other.

各セグメントの両端のポケットを隣接するセグメントのポケットに重ね合わせた状態で、外径側に位置するポケットの内径部に、内径側に位置するポケットの内径側に引っ掛かる円周方向の突起部を設けることができる。   In a state where the pockets at both ends of each segment are overlapped with the pockets of the adjacent segments, a circumferential protrusion that hooks on the inner diameter side of the pocket located on the inner diameter side is provided on the inner diameter portion of the pocket located on the outer diameter side. be able to.

また、各セグメントの両端のポケットを隣接するセグメントのポケットに重ね合わせた状態で、内径側に位置するポケットの外径部に、外径側に位置するポケットの外径側に引っ掛かる円周方向の突起部を設けることができる。   In addition, in a state where the pockets at both ends of each segment are overlapped with the pockets of the adjacent segments, the circumferential direction hooks on the outer diameter side of the pocket located on the outer diameter side on the outer diameter portion of the pocket located on the inner diameter side. A protrusion can be provided.

また、各セグメントの両端のポケットを隣接するセグメントのポケットに重ね合わせた状態で、内径側に位置するポケットには転動体の脱落を防止するための締め代を設けることが好ましい。   Moreover, it is preferable to provide a margin for preventing the rolling elements from falling off in the pocket located on the inner diameter side in a state where the pockets at both ends of each segment are overlapped with the pockets of the adjacent segment.

各セグメントの両端のポケットを隣接するセグメントのポケットに重ね合わせた状態で、内径側に位置するポケットには転動体の脱落を防止するための締め代を凸部によって構成することができる。   In the state where the pockets at both ends of each segment are overlapped with the pockets of the adjacent segments, a tightening allowance for preventing the rolling elements from falling off can be formed by a convex portion in the pocket located on the inner diameter side.

一つのセグメントに３個以上の転動体を保持するポケットを有し、そのセグメントの両端のポケットと転動体との間に形成される円周方向隙間δ１を、それ以外のポケットと転動体との間に形成される円周方向隙間δ２よりも広く形成するようにしてもよい。   One segment has a pocket for holding three or more rolling elements, and a circumferential gap δ1 formed between the pockets at both ends of the segment and the rolling element is defined as a gap between the other pocket and the rolling element. It may be formed wider than the circumferential gap δ2 formed therebetween.

セグメントの両端のポケットを隣接するセグメントのポケットに重ね合わせた状態で、外径側に位置するポケットの端部の柱と、内径側に位置するポケットの柱とに互いに係合する段差部を設けるようにしてもよい。   In a state where the pockets at both ends of the segment are overlapped with the pockets of the adjacent segment, a stepped portion that engages with the column at the end of the pocket positioned on the outer diameter side and the column of the pocket positioned at the inner diameter side is provided. You may do it.

セグメントの両端の柱の根元部には、すみＲを設けることが望ましい。   It is desirable to provide a corner R at the base of the pillars at both ends of the segment.

隣り合うセグメントを連結した際に形成されるセグメントの外径側のポケット間に形成される隙間δ３と、内径側のポケット間に形成される隙間δ４との関係をδ３＞δ４にすることが好ましい。   It is preferable that the relationship between the gap δ3 formed between the outer diameter side pockets of the segment formed when the adjacent segments are connected and the gap δ4 formed between the inner diameter side pockets is δ3> δ4. .

この発明によれば、セグメントの両端のポケットを、隣接するセグメントのポケットに重ね合わせ、重ね合わせたポケットに転動体を嵌め入れて各セグメントを互いに連結するので、セグメントの両端に連結部材を設ける必要がなく、軸受の定格荷重の低下を極力抑えることができる。   According to this invention, the pockets at both ends of the segments are overlapped with the pockets of the adjacent segments, and the rolling elements are fitted into the overlapped pockets to connect the segments to each other. Therefore, it is possible to suppress the decrease in the rated load of the bearing as much as possible.

各セグメントの両端のポケットが連結部を構成するので、セグメントの長さと連結部の長さの寸法管理を別々に行う必要がなく、生産性が向上する。
同じ形状のセグメントを組み合わせて円環状にするので、加工治具や成形金型が一つで対応できる。 Since the pockets at both ends of each segment constitute the connecting portion, it is not necessary to separately manage the length of the segment and the length of the connecting portion, thereby improving productivity.
By combining segments with the same shape into an annular shape, a single processing jig or molding die can be used.

実施形態１の円すいころ軸受の断面図である。It is sectional drawing of the tapered roller bearing of Embodiment 1. 実施形態１のセグメントを連結した状態の斜視図である。It is a perspective view in the state where the segment of Embodiment 1 was connected. （ａ）は実施形態１の２つのセグメントを分離した状態で示す斜視図、（ｂ）は実施形態１の２つのセグメントを重ねた状態を示す斜視図、（ｃ）は実施形態１の２つのセグメントを重ねて転動体を嵌め入れて連結した状態を示す斜視図である。(A) is a perspective view showing a state where two segments of Embodiment 1 are separated, (b) is a perspective view showing a state where two segments of Embodiment 1 are overlapped, and (c) is two views of Embodiment 1. It is a perspective view which shows the state which piled up the segment and inserted and connected the rolling element. 連結した２つのセグメントの縦断面図である。It is a longitudinal cross-sectional view of two connected segments. セグメントの別な実施形態２を示す斜視図である。It is a perspective view which shows another embodiment 2 of a segment. 実施形態１のセグメントのポケットの板厚の関係を示す斜視図である。FIG. 3 is a perspective view showing the relationship between the thicknesses of the pockets of the segments according to the first embodiment. 実施形態１のセグメントを連結する際の段差部を示す斜視図である。It is a perspective view which shows the level | step-difference part at the time of connecting the segment of Embodiment 1. FIG. 実施形態１のセグメントの端部の柱部のすみＲを示す斜視図である。It is a perspective view which shows the corner R of the pillar part of the edge part of the segment of Embodiment 1. FIG. 実施形態１のセグメントを連結した際に各セグメント間に形成される隙間の関係を示す斜視図である。It is a perspective view which shows the relationship of the clearance gap formed between each segment when the segment of Embodiment 1 is connected. セグメントの別な実施形態３を示す斜視図である。It is a perspective view which shows another embodiment 3 of a segment. セグメントの別な実施形態４を示す斜視図である。It is a perspective view which shows another embodiment 4 of a segment. 図１１のセグメントの連結状態を示す斜視図である。It is a perspective view which shows the connection state of the segment of FIG.

以下、この発明の実施の形態を添付図面に基づいて説明する。
[実施形態１] Embodiments of the present invention will be described below with reference to the accompanying drawings.
[Embodiment 1]

図１は、風力発電の主軸支持等に用いられる大型円すいころ軸受の一部を示すものであり、この円すいころ軸受は、内輪１１、外輪１２、これらの軌道面１３、１４の間に介在された多数の円すいころ１５及び各円すいころ１５を一定間隔に保持するポケット１６を備えた保持器１７を主要な構成要素としている。   FIG. 1 shows a part of a large tapered roller bearing used for supporting a main shaft of wind power generation. The tapered roller bearing is interposed between an inner ring 11, an outer ring 12, and these raceway surfaces 13 and 14. A main component is a cage 17 having a large number of tapered rollers 15 and pockets 16 for holding the tapered rollers 15 at regular intervals.

風力発電の主軸支持等に用いられる大型円すいころ軸受の場合、円すいころ１５の平均径は４０ｍｍ以上、軸受外径は１ｍ以上である。   In the case of a large tapered roller bearing used for supporting the main shaft of wind power generation, the tapered roller 15 has an average diameter of 40 mm or more and a bearing outer diameter of 1 m or more.

保持器１７は、図２に示すように、円周方向に複数に分割されたセグメント１８を環状に配列することにより構成されるものである。   As shown in FIG. 2, the cage 17 is configured by arranging the segments 18 divided into a plurality in the circumferential direction in an annular shape.

一つのセグメント１８には、２個以上の円すいころ１５を保持するためのポケット１６を有する。   One segment 18 has a pocket 16 for holding two or more tapered rollers 15.

図３（ａ）（ｂ）（ｃ）に示す実施形態のセグメント１８は、外径側ポケット部１６ａと内径側ポケット部１６ｂを隣り合うように形成したものである。図３（ａ）に示すように、隣接するセグメント１８の外径側ポケット部１６ａの下方位置に、隣接するセグメント１８の内径側ポケット部１６ｂが重なるように、一方の隣接するセグメント１８を軸方向に移動させることにより、図３（ｂ）に示すように、隣接するセグメント１８の重なり部分に、円すいころ１５を保持するポケット１６が形成される。そして、図３（ｃ）に示すように、外径側ポケット部１６ａと内径側ポケット部１６ｂが重なるポケット１６に、円すいころ１５を外径側から内径側に向かって圧入すると、隣り合う２個のセグメント１８が連結される。   The segment 18 of the embodiment shown in FIGS. 3A, 3B, and 3C is formed such that the outer diameter side pocket portion 16a and the inner diameter side pocket portion 16b are adjacent to each other. As shown in FIG. 3A, one adjacent segment 18 is axially arranged so that the inner diameter side pocket portion 16b of the adjacent segment 18 overlaps the lower position of the outer diameter side pocket portion 16a of the adjacent segment 18. As shown in FIG. 3B, a pocket 16 for holding the tapered roller 15 is formed at the overlapping portion of the adjacent segments 18. As shown in FIG. 3C, when the tapered roller 15 is press-fitted from the outer diameter side toward the inner diameter side into the pocket 16 where the outer diameter side pocket portion 16a and the inner diameter side pocket portion 16b overlap, Are connected.

セグメント１８の内径側ポケット部１６ｂの外径側ポケット部１６ａ側の内径部には、隣接するセグメント１８を重ね合わせた状態で内径側ポケット部１６ｂの内径側に引っ掛かる円周方向の突起部１６ｃが設けられている。   On the inner diameter side of the outer diameter side pocket portion 16a of the inner diameter side pocket portion 16b of the segment 18, there is a circumferential projection 16c that is caught on the inner diameter side of the inner diameter side pocket portion 16b in a state where the adjacent segments 18 are overlapped. Is provided.

隣接するセグメント１８の外径側ポケット部１６ａと内径側ポケット部１６ｂを重ね合わせて形成されるポケット１６の内面には、図４に示すように、円すいころ１５を外径側から内径側に向かって圧入した際に、円すいころ１５の脱落を防止する凸部１６ｄを設けている。   On the inner surface of the pocket 16 formed by overlapping the outer diameter side pocket portion 16a and the inner diameter side pocket portion 16b of the adjacent segment 18, as shown in FIG. 4, the tapered roller 15 is directed from the outer diameter side to the inner diameter side. A convex portion 16d is provided to prevent the tapered roller 15 from falling off when being pressed.

図３に示す実施形態のセグメント１８では、隣接するセグメント１８を重ね合わせた状態で、内径側ポケット部１６ｂの内径側に引っ掛かる円周方向の突起部１６ｃを、内径側ポケット部１６ｂの外径側ポケット部１６ａ側の内径部に設けたが、図５に示す実施形態では、隣接するセグメント１８を重ね合わせた状態で、外径側ポケット部１６ａの外径側に引っ掛かる円周方向の突起部１６ｅを、内径側ポケット部１６ｂの外径部に設けている。   In the segment 18 of the embodiment shown in FIG. 3, the circumferential protrusion 16c that is hooked on the inner diameter side of the inner diameter side pocket portion 16b in the state where the adjacent segments 18 are overlapped is arranged on the outer diameter side of the inner diameter side pocket portion 16b. Although provided in the inner diameter portion on the pocket portion 16a side, in the embodiment shown in FIG. 5, in the state where the adjacent segments 18 are overlapped, the circumferential projection portion 16e that is caught on the outer diameter side of the outer diameter side pocket portion 16a. Is provided in the outer diameter portion of the inner diameter side pocket portion 16b.

ポケット１６を形成する外径側ポケット部１６ａの板厚ｔ２と、内径側ポケット部１６の板厚ｔ１との関係は、図６に示すように、ｔ２≠ｔ１の関係、即ち、両者の板厚を異ならせることにより、保持器１７全体の剛性バランスを均一にすることが可能となる。   As shown in FIG. 6, the relationship between the thickness t2 of the outer diameter side pocket portion 16a forming the pocket 16 and the thickness t1 of the inner diameter side pocket portion 16 is the relationship of t2 ≠ t1, that is, the thickness of both. By making different, it becomes possible to make the rigidity balance of the entire cage 17 uniform.

セグメント１８の外径側ポケット部１６ａの端部の柱に、図７に示すように段差１６ｆを設け、この段差１６ｆに係合する段差を内径側ポケット部１６ｂの柱に設けることにより、隣り合うセグメント１８を連結した際の柱の強度を向上させることができる。   As shown in FIG. 7, a step 16f is provided in the column at the end of the outer diameter side pocket portion 16a of the segment 18, and a step that engages with the step 16f is provided in the column of the inner diameter side pocket portion 16b. The strength of the pillars when the segments 18 are connected can be improved.

セグメント１８の両端の柱の根元部に、図８に示すように、すみＲを設けることにより、ポケット１６の強度を確保することができる。   The strength of the pocket 16 can be ensured by providing the corners R as shown in FIG. 8 at the bases of the columns at both ends of the segment 18.

図９に示すように、隣り合うセグメント１８を連結した際に形成されるセグメント１８の外径側ポケット部１６ａ同士の隙間δ３と、内径側ポケット部１６ｂ同士の隙間δ４との関係は、δ３＞δ４とする。これにより、セグメント１８同士の衝突荷重は外径側で、円すいころ１５との衝突荷重は内径側ポケット部１６ｂで受けることができるので、荷重の分散が行える。   As shown in FIG. 9, the relationship between the gap δ3 between the outer diameter side pocket portions 16a and the gap δ4 between the inner diameter side pocket portions 16b formed when connecting the adjacent segments 18 is δ3> Let δ4. Thereby, the collision load between the segments 18 can be received by the outer diameter side, and the collision load with the tapered roller 15 can be received by the inner diameter side pocket portion 16b, so that the load can be distributed.

図１０は、一つのセグメント１８に、３個以上の円すいころ１５を保持するポケット１６を設けた実施形態であり、この実施形態では、セグメント１８の両端のポケット１６と円すいころ１５との間の円周方向隙間δ１を、その他のポケット１６と円すいころ１５との間の円周方向隙間δ２よりも広く、即ち、δ１＞δ２の関係にすることにより、セグメント１８を連結した際に、両端のポケット１６で円すいころ１５に加わる荷重が大きくならないようにしている。   FIG. 10 shows an embodiment in which a pocket 16 for holding three or more tapered rollers 15 is provided in one segment 18, and in this embodiment, between the pockets 16 at both ends of the segment 18 and the tapered rollers 15. The circumferential clearance δ1 is wider than the circumferential clearance δ2 between the other pockets 16 and the tapered rollers 15, that is, when the segments 18 are connected to each other by connecting δ1> δ2. The load applied to the tapered roller 15 in the pocket 16 is prevented from becoming large.

図１１も図１０の実施形態と同様に、３個以上の円すいころ１５を保持するポケット１６を設けた実施形態である。   FIG. 11 is also an embodiment in which pockets 16 for holding three or more tapered rollers 15 are provided as in the embodiment of FIG.

この図１１の実施形態では、円すいころ１５の脱落を防止する突起部１９を、各ポケット１６を形成する柱部の上方に設けている。   In the embodiment of FIG. 11, a protrusion 19 that prevents the tapered roller 15 from falling off is provided above the pillar portion that forms each pocket 16.

図１２は、図１１の実施形態のセグメント１８を連結した状態を示している。   FIG. 12 shows a state in which the segments 18 of the embodiment of FIG. 11 are connected.

以上の実施形態のセグメント１８を形成する材料としては、例えば、ポリエーテルエーテルケトン（ＰＥＥＫ）を使用することができる。   As a material for forming the segment 18 of the above embodiment, for example, polyether ether ketone (PEEK) can be used.

なお、以上の実施形態は円すいころ軸受について述べたが、円筒ころ軸受の保持器にも適用できる。   In addition, although the above embodiment described the tapered roller bearing, it is applicable also to the holder | retainer of a cylindrical roller bearing.

１１ 内輪
１２ 外輪
１３、１４ 軌道面
１５ 円すいころ
１６ ポケット
１６ａ 外径側ポケット部
１６ｂ 内径側ポケット部
１６ｃ 突起部
１６ｄ 凸部
１６ｅ 突起部
１６ｆ 段差
１７ 保持器
１８ セグメント
１９ 突起部 11 Inner ring 12 Outer ring 13, 14 Raceway 15 Tapered roller 16 Pocket 16a Outer diameter side pocket part 16b Inner diameter side pocket part 16c Projection part 16d Projection part 16e Projection part 16f Step 17 Cage 18 Segment 19 Projection part

Claims (9)

円周上に２個以上配置されるセグメントによって構成されるころ軸受の保持器において、一つのセグメントには２個以上の転動体を保持するためのポケットを有し、各セグメントの両端のポケットを隣接するセグメントのポケットに重ね合わせ、重ね合わせたポケットに転動体を嵌め入れて各セグメントを互いに連結することを特徴とするころ軸受の保持器。   In a roller bearing cage composed of two or more segments arranged on the circumference, one segment has pockets for holding two or more rolling elements, and pockets at both ends of each segment are provided. A roller bearing retainer characterized in that it is overlapped with a pocket of an adjacent segment, and a rolling element is fitted into the overlapped pocket to connect the segments to each other. 各セグメントの両端のポケットを隣接するセグメントのポケットに重ね合わせた状態で、外径側に位置するポケットの内径部に、内径側に位置するポケットの内径側に引っ掛かる円周方向の突起部を設けたことを特徴とする請求項１に記載のころ軸受の保持器。   In the state where the pockets at both ends of each segment are overlapped with the pockets of the adjacent segments, a circumferential projection that hooks on the inner diameter side of the pocket located on the inner diameter side is provided on the inner diameter portion of the pocket located on the outer diameter side. The roller bearing retainer according to claim 1, wherein the roller bearing retainer is provided. 各セグメントの両端のポケットを隣接するセグメントのポケットに重ね合わせた状態で、内径側に位置するポケットの外径部に、外径側に位置するポケットの外径側に引っ掛かる円周方向の突起部を設けたことを特徴とする請求項１に記載のころ軸受の保持器。   A circumferential protrusion that hooks on the outer diameter side of the pocket located on the outer diameter side, with the pockets at both ends of each segment superimposed on the pocket of the adjacent segment The roller bearing retainer according to claim 1, further comprising: 各セグメントの両端のポケットを隣接するセグメントのポケットに重ね合わせた状態で、内径側に位置するポケットには転動体の脱落を防止するための締め代を設けている請求項１〜３のいずれかに記載のころ軸受の保持器。 The pocket located on the inner diameter side is provided with a tightening margin for preventing the rolling element from falling off in a state where the pockets at both ends of each segment are overlapped with the pockets of the adjacent segment. A roller bearing retainer as described in 1. 各セグメントの両端のポケットを隣接するセグメントのポケットに重ね合わせた状態で、内径側に位置するポケットには転動体の脱落を防止するための締め代が凸部である請求項４に記載のころ軸受の保持器。 5. The roller according to claim 4, wherein the pockets on the inner diameter side are convex portions for preventing the rolling elements from falling off in a state where the pockets at both ends of each segment are overlapped with the pockets of the adjacent segments. Bearing cage. 一つのセグメントに３個以上の転動体を保持するポケットを有し、そのセグメントの両端のポケットと転動体との間に形成される円周方向隙間δ１を、それ以外のポケットと転動体との間に形成される円周方向隙間δ２よりも広く形成している請求項１〜５のいずれかに記載のころ軸受の保持器。   One segment has a pocket for holding three or more rolling elements, and a circumferential gap δ1 formed between the pockets at both ends of the segment and the rolling element is defined as a gap between the other pocket and the rolling element. The roller bearing retainer according to any one of claims 1 to 5, wherein the cage is wider than a circumferential clearance δ2 formed therebetween. セグメントの両端のポケットを隣接するセグメントのポケットに重ね合わせた状態で、外径側に位置するポケットの端部の柱と、内径側に位置するポケットの柱とに互いに係合する段差部を設けたことを特徴とする請求項１〜６のいずれかに記載のころ軸受の保持器。   In the state where the pockets at both ends of the segment are overlapped with the pockets of the adjacent segment, a stepped portion is provided that engages with the column at the end of the pocket located on the outer diameter side and the column of the pocket located at the inner diameter side. The roller bearing retainer according to any one of claims 1 to 6, wherein the cage is a roller bearing retainer. 隣り合うセグメントを連結した際に形成されるセグメントの外径側のポケット間に形成される隙間δ３と、内径側のポケット間に形成される隙間δ４との関係をδ３＞δ４にしたことを特徴とする請求項１〜７のいずれかに記載のころ軸受の保持器。   The relationship between the gap δ3 formed between the outer diameter side pockets of the segments formed when the adjacent segments are connected and the gap δ4 formed between the inner diameter side pockets is set to δ3> δ4. A cage for a roller bearing according to any one of claims 1 to 7. 内輪と、外輪と、内輪と外輪の間に周方向に間隔をおいて組み込まれた複数のころと、そのころを保持する請求項１〜８のいずれかに記載の保持器とを有するころ軸受。
A roller bearing having an inner ring, an outer ring, a plurality of rollers assembled with a gap in the circumferential direction between the inner ring and the outer ring, and the cage according to any one of claims 1 to 8. .
JP2013030674A 2013-02-20 2013-02-20 Cage for rolling bearing Pending JP2014159836A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020127445A1 (en) 2020-10-19 2022-04-21 Schaeffler Technologies AG & Co. KG Roller bearing cage with cage lock and method for assembling the roller bearing cage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020127445A1 (en) 2020-10-19 2022-04-21 Schaeffler Technologies AG & Co. KG Roller bearing cage with cage lock and method for assembling the roller bearing cage
US11965550B2 (en) 2020-10-19 2024-04-23 Schaeffler Technologies AG & Co. KG Rolling bearing cage comprising a cage lock, and method for mounting said rolling bearing cage

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