JP2006207731A - Roller bearing - Google Patents

Roller bearing Download PDF

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JP2006207731A
JP2006207731A JP2005022070A JP2005022070A JP2006207731A JP 2006207731 A JP2006207731 A JP 2006207731A JP 2005022070 A JP2005022070 A JP 2005022070A JP 2005022070 A JP2005022070 A JP 2005022070A JP 2006207731 A JP2006207731 A JP 2006207731A
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bolt hole
cage
inner ring
roller bearing
cone
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Etsuro Irie
悦郎 入江
Yu Suzuki
佑 鈴木
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NSK Ltd
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NSK Ltd
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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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • F16C33/605—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings with a separate retaining member, e.g. flange, shoulder, guide ring, secured to a race ring, adjacent to the race surface, so as to abut the end of the rolling elements, e.g. rollers, or the cage
    • 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
    • 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
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
    • 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
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings

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

Abstract

<P>PROBLEM TO BE SOLVED: To compatibly prevent the breakage of a roller bearing and improve assembling efficiency. <P>SOLUTION: On the small diameter side of a bearing cone 2, a small collar 6 is mounted which is provided separately from the cone 2. The small collar 6 is fastened to a bolt hole 7 (a cutout portion) of the cone 2 with a bolt 8 after assembling a cage 4 and a tapered roller 3 therein. So, no need exists for caulking the cage 4. An escape portion 10 is formed on a mating face near (right under) the bolt hole 7. The axial length of the escape portion 10 is set to be greater than the axial length of the bolt hole 7 (the cutout portion). So, when circumferential stress occurs during fitting the cone 2 with interference fit, the stress hardly operates around the escape portion 10 to reduce stress concentration in the bolt hole 7 or its vicinity. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、主に一般産業用機械に組み込まれ、破損防止と組立性向上を図ったころ軸受に関する。   The present invention relates to a roller bearing which is mainly incorporated in a general industrial machine and which prevents damage and improves assembly.

一例として、円錐ころ軸受で、かご型保持器タイプの場合、内輪に組み込む際に、円錐ころと保持器とが分解しないように、保持器を加締める必要がある。   As an example, in the case of a cage-type cage with a tapered roller bearing, it is necessary to crimp the cage so that the tapered roller and the cage are not disassembled when incorporated in the inner ring.

しかし、大型・超大型の円錐ころ軸受の場合には、加締め時の塑性変形等を管理することが難しいのが現状であり、保持器の加締めの過不足や柱の変形等の問題がある。   However, in the case of large and super large tapered roller bearings, it is currently difficult to manage the plastic deformation during caulking, and there are problems such as excessive or insufficient cage caulking and column deformation. is there.

そこで、かご型保持器においては、保持器を加締める必要が無いように、内輪の小鍔を分離する。先ず、保持器と円錐ころを組み込んだ後、小鍔と内輪をボルト等で締結する。この構造を図３に示す。   Therefore, in the cage type cage, the inner ring of the inner ring is separated so that the cage does not need to be crimped. First, after the cage and the tapered roller are assembled, the gavel and the inner ring are fastened with bolts or the like. This structure is shown in FIG.

図３は、従来例に係る小鍔分離タイプ円錐ころ軸受の断面図である。   FIG. 3 is a cross-sectional view of a gavel separation type tapered roller bearing according to a conventional example.

小鍔分離タイプ円錐ころ軸受は、円錐内面状に傾斜した軌道面を内径面に有ずる外輪（図示略）と、円錐外面上に傾斜した軌道面を外径面に有する内輪２と、外輪軌道輪と内輪軌道輪との間に複数配置された転動体である円錐台形状の円錐ころ３と、を具備している。   The gavel-separated type tapered roller bearing includes an outer ring (not shown) having a raceway surface inclined toward the inner surface of the cone on the inner diameter surface, an inner ring 2 having a raceway surface inclined on the outer surface of the cone on the outer diameter surface, and an outer ring raceway. And a truncated cone-shaped tapered roller 3 which is a rolling element disposed between the ring and the inner ring raceway.

円錐ころ３は、外輪（図示略）と内輪２との間に組み込まれた環状の保持器４によって、周方向に一定の間隔を隔てて保持されている。   The tapered roller 3 is held at a constant interval in the circumferential direction by an annular cage 4 incorporated between an outer ring (not shown) and the inner ring 2.

保持器４は、鋼板製のプレス保持器（かご型保持器）であって、等脚台形状のポケットが周方向に一定の間隔で複数打ち抜かれて成型され、複数の柱部が大径リング部と小径リング部とを連結している。   The retainer 4 is a steel plate press retainer (cage retainer), and is formed by punching a plurality of isosceles trapezoidal pockets at regular intervals in the circumferential direction, and a plurality of pillars are large-diameter rings. The part and the small diameter ring part are connected.

内輪２の小径側には、内輪２と別体に設けた小鍔６が装着してある。この小鍔６は、保持器４と円錐ころ３を組み込んだ後、内輪２のボルト孔７（切欠き部）に、ボルト８により締結してある。従って、保持器４を加締める必要がない。   On the small-diameter side of the inner ring 2, a small rod 6 provided separately from the inner ring 2 is attached. After the cage 4 and the tapered roller 3 have been assembled, the gavel 6 is fastened to the bolt hole 7 (notch portion) of the inner ring 2 with a bolt 8. Therefore, it is not necessary to crimp the retainer 4.

なお、特許文献１及び特許文献２には、内輪と、小鍔とを分離した「小鍔分離タイプ」の円錐ころ軸受が開示してあり、小鍔は、内輪の小径側に、ボルト、ねじ、及びピン等を用いることなく、嵌め合わしてある。
実開平３−６５０１７号公報 特開２００１−３３６５３７号公報 Patent Document 1 and Patent Document 2 disclose a “small collar separating type” tapered roller bearing in which an inner ring and a small collar are separated, and the small collar is provided with a bolt and a screw on the small diameter side of the inner ring. And without using pins or the like.
Japanese Utility Model Publication No. 3-65017 JP 2001-336537 A

しかしながら、小鍔を分離した軌道輪がしまりばめで組み込まれる場合には、嵌め合い面の傍に、ボルト孔等の切欠き部があり、軌道輪が嵌め合わされると、その軌道輪には、円周応力が発生することがある。   However, when the race ring separated from the gavel is assembled with an interference fit, there is a notch such as a bolt hole beside the fitting surface, and when the race ring is fitted, Circumferential stress may occur.

このような際、ボルト孔等の切欠き部又はその近傍に、応力が集中して、そこから割れ等の損傷に至る可能性がある。   In such a case, stress concentrates on a notch portion such as a bolt hole or the vicinity thereof, and there is a possibility that damage such as a crack may be caused therefrom.

本発明は、上述したような事情に鑑みてなされたものであって、破損防止と組立性向上との両立を図ることができるころ軸受を提供することを目的とする。   The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a roller bearing capable of achieving both prevention of breakage and improvement of assembly.

上記の目的を達成するため、本発明の請求項１に係るころ軸受は、一対の軌道輪の間に、ころを転動自在に介装し、
一方の軌道輪と、小鍔とを分離したころ軸受において、
一方の軌道輪の端面に、切欠き部を有し、
当該切欠き部の近傍の嵌め合い面に、逃げ部が形成してあることを特徴とする。 In order to achieve the above object, a roller bearing according to claim 1 of the present invention includes a roller interposed between a pair of race rings so as to be freely rollable.
In a roller bearing that separates one bearing ring and a small collar,
One end of the race ring has a notch,
An escape portion is formed on the fitting surface in the vicinity of the notch.

本発明の請求項２に係るころ軸受は、前記逃げ部の軸方向長さは、前記切欠き部の軸方向長さよりも、長くなるように設定してあることを特徴とする。   The roller bearing according to claim 2 of the present invention is characterized in that the axial length of the relief portion is set to be longer than the axial length of the notch portion.

本発明の請求項３に係るころ軸受は、前記切欠き部は、ボルト孔であることを特徴とする。   The roller bearing according to claim 3 of the present invention is characterized in that the notch is a bolt hole.

本発明によれば、一方の軌道輪の端面に、切欠き部を有し、当該切欠き部の近傍の嵌め合い面に、逃げ部が形成してある。   According to the present invention, the end surface of one of the races has a notch, and the relief portion is formed on the fitting surface in the vicinity of the notch.

そのため、しまりばめにより、軌道輪が嵌め合わされる際に、円周応力が発生した場合であっても、逃げ部の周辺には、応力が作用しにくく、ボルト孔等の切欠き部又はその近傍に於ける応力集中を緩和することができる。また、本発明によれば、保持器を加締める必要がない。従って、破損防止と組立性向上との両立を図ることができる。   For this reason, even when circumferential stress is generated when the race rings are fitted together by interference fit, the stress is unlikely to act on the periphery of the escape portion. Stress concentration in the vicinity can be relaxed. Further, according to the present invention, there is no need to caulk the cage. Therefore, it is possible to achieve both the prevention of breakage and the improvement of assembly.

以下、本発明の実施の形態に係るころ軸受を図面を参照しつつ説明する。   Hereinafter, a roller bearing according to an embodiment of the present invention will be described with reference to the drawings.

（第１実施の形態）
図１（ａ）は、本発明の第１実施の形態に係る小鍔分離タイプ円錐ころ軸受の断面図であり、（ｂ）は、（ａ）で破線により囲んだ部位の拡大断面図である。 (First embodiment)
FIG. 1A is a cross-sectional view of a gavel separation type tapered roller bearing according to a first embodiment of the present invention, and FIG. 1B is an enlarged cross-sectional view of a portion surrounded by a broken line in FIG. .

小鍔分離タイプ円錐ころ軸受は、円錐内面状に傾斜した軌道面を内径面に有ずる外輪（図示略）と、円錐外面上に傾斜した軌道面を外径面に有する内輪２と、外輪軌道輪と内輪軌道輪との間に複数配置された転動体である円錐台形状の円錐ころ３と、を具備している。   The gavel-separated type tapered roller bearing includes an outer ring (not shown) having a raceway surface inclined toward the inner surface of the cone on the inner diameter surface, an inner ring 2 having a raceway surface inclined on the outer surface of the cone on the outer diameter surface, and an outer ring raceway. And a truncated cone-shaped tapered roller 3 which is a rolling element disposed between the ring and the inner ring raceway.

円錐ころ３は、外輪（図示略）と内輪２との間に組み込まれた環状の保持器４によって、周方向に一定の間隔を隔てて保持されている。   The tapered roller 3 is held at a constant interval in the circumferential direction by an annular cage 4 incorporated between an outer ring (not shown) and the inner ring 2.

保持器４は、鋼板製のプレス保持器（かご型保持器）であって、等脚台形状のポケットが周方向に一定の間隔で複数打ち抜かれて成型され、複数の柱部が大径リング部と小径リング部とを連結している。   The retainer 4 is a steel plate press retainer (cage retainer), and is formed by punching a plurality of isosceles trapezoidal pockets at regular intervals in the circumferential direction, and a plurality of pillars are large-diameter rings. The part and the small diameter ring part are connected.

内輪２の小径側には、内輪２と別体に設けた小鍔６が装着してある。この小鍔６は、保持器４と円錐ころ３を組み込んだ後、内輪２のボルト孔７（切欠き部）に、ボルト８により締結してある。従って、本実施の形態では、保持器４を加締める必要がない。   On the small-diameter side of the inner ring 2, a small rod 6 provided separately from the inner ring 2 is attached. After the cage 4 and the tapered roller 3 have been assembled, the gavel 6 is fastened to the bolt hole 7 (notch portion) of the inner ring 2 with a bolt 8. Therefore, in the present embodiment, it is not necessary to crimp the retainer 4.

内輪２の端面に、ボルト孔７（切欠き部）を有しているが、本実施の形態では、ボルト孔７の近傍（直下）の嵌め合い面に、逃げ部１０が形成してある。   The end face of the inner ring 2 has a bolt hole 7 (notch). In the present embodiment, a relief part 10 is formed on the fitting surface near (directly below) the bolt hole 7.

そのため、しまりばめにより、内輪２が軸（図示略）に嵌め合わされる際に、円周応力が発生した場合であっても、逃げ部１０の周辺には、応力が作用しにくく、ボルト孔７又はその近傍に於ける応力集中を緩和することができる。また、本実施の形態によれば、保持器４を加締める必要がない。従って、破損防止と組立性向上との両立を図ることができる。   Therefore, even when a circumferential stress is generated when the inner ring 2 is fitted to the shaft (not shown) due to the interference fit, the stress is unlikely to act on the periphery of the escape portion 10 and the bolt hole The stress concentration at or near 7 can be relaxed. Moreover, according to this Embodiment, it is not necessary to crimp the retainer 4. FIG. Therefore, it is possible to achieve both the prevention of breakage and the improvement of assembly.

図１（ｂ）に示すように、軸受の内径が１９００［ｍｍ］、外径が２３５０［ｍｍ］、幅が１１０［ｍｍ］である場合、小鍔６は、例えば、軸方向の幅が２２［ｍｍ］であり、径方向の幅が２５［ｍｍ］である。   As shown in FIG. 1B, when the inner diameter of the bearing is 1900 [mm], the outer diameter is 2350 [mm], and the width is 110 [mm], for example, the gavel 6 has an axial width of 22 mm. [Mm], and the width in the radial direction is 25 [mm].

逃げ部１０は、例えば、軸方向の長さ（ａ）が１３［ｍｍ］であり、深さ（ｂ）が１［ｍｍ］であり、ボルト孔７（切欠き部）の軸方向長さ（ｃ）が１２［ｍｍ］である。   The escape portion 10 has, for example, an axial length (a) of 13 [mm], a depth (b) of 1 [mm], and the axial length of the bolt hole 7 (notch portion) ( c) is 12 [mm].

また、逃げ部１０の軸方向の長さ（ａ）は、ボルト孔７（切欠き部）の軸方向長さ（ｃ）よりも、長くなるように設定してある（ａ≧ｃ、又は、ｃ／ａ≧１．０）。そのため、嵌め合い面に、ボルト孔７（切欠き部）の影響が及ぶことが小さい。   Further, the axial length (a) of the relief portion 10 is set to be longer than the axial length (c) of the bolt hole 7 (notch portion) (a ≧ c, or c / a ≧ 1.0). For this reason, the influence of the bolt hole 7 (notch) on the fitting surface is small.

（第２実施の形態）
図２（ａ）は、本発明の第２実施の形態に係る小鍔分離タイプ円錐ころ軸受の断面図である。 (Second Embodiment)
FIG. 2A is a cross-sectional view of a gavel separation type tapered roller bearing according to a second embodiment of the present invention.

本実施の形態は、その基本的構造が上述した第１実施の形態と同様であるため、相違する点について説明する。   Since the basic structure of this embodiment is the same as that of the first embodiment described above, differences will be described.

本実施の形態では、保持器は、ピンタイプ保持器２０であり、一対の円環部２１，２２と、ピン２３とを有している。   In the present embodiment, the cage is a pin type cage 20 and has a pair of annular portions 21 and 22 and a pin 23.

一般的に、ピンタイプ保持器の円錐ころ軸受においては、ピン２３と円環部２１，２２の締結は、円錐ころ３、円環部２１，２２を内輪２に組み込んだ後、ピン２３と円環部２１，２２の溶接をもって行う。その後、溶接部に応力集中が生じないように、グラインダ等で溶接部を研磨し丸めるが、その過程で研磨粉等の塵芥が内輪２と円錐ころ３の間に入り込み、軸受の早期損傷をもたらす可能性があり、組立て後の洗浄等の管理が厳しく要求される。   In general, in a tapered roller bearing of a pin type cage, the pin 23 and the annular portions 21 and 22 are fastened after the tapered roller 3 and the annular portions 21 and 22 are assembled into the inner ring 2 and then the pin 23 and the circular portion. This is performed by welding the ring portions 21 and 22. Thereafter, the welded portion is polished and rounded with a grinder or the like so as not to cause stress concentration in the welded portion, but dust such as abrasive powder enters between the inner ring 2 and the tapered roller 3 in the process and causes early bearing damage. There is a possibility, and management such as cleaning after assembly is strictly required.

そこで、本実施の形態では、ピンタイプ保持器２０においても、内輪２と、小鍔６とが分離してある。即ち、内輪２の小径側には、内輪２と別体に設けた小鍔６が装着してある。この小鍔６は、保持器２０と円錐ころ３を組み込んだ後、内輪２のボルト孔７（切欠き部）に、ボルト８により締結してある。   Therefore, in the present embodiment, the inner ring 2 and the gavel 6 are separated also in the pin type holder 20. That is, a small rod 6 provided separately from the inner ring 2 is mounted on the small diameter side of the inner ring 2. After the cage 20 and the tapered roller 3 are assembled, the gavel 6 is fastened to the bolt hole 7 (notch portion) of the inner ring 2 with a bolt 8.

従って、先に、保持器２０と円錐ころ３を締結後、溶接部を研磨し、その後、内輪２に組み込む。そうすれば、研磨時の研磨粉等の塵芥を内輪に組み込む前に除去することができる。   Therefore, after the retainer 20 and the tapered roller 3 are fastened, the welded portion is polished and then incorporated into the inner ring 2. Then, dust such as polishing powder at the time of polishing can be removed before being incorporated into the inner ring.

また、本実施の形態に於いても、内輪２の端面に、ボルト孔７（切欠き部）を有しているが、ボルト孔７の近傍（直下）の嵌め合い面に、逃げ部１０が形成してある。逃げ部１０の軸方向長さは、ボルト孔７（切欠き部）の軸方向長さより長くなるように設定してある。そのため、しまりばめにより、内輪２が嵌め合わされる際に、円周応力が発生した場合であっても、逃げ部１０の周辺には、応力が作用しにくく、ボルト孔７又はその近傍に於ける応力集中を緩和することができる。   Also in the present embodiment, the end surface of the inner ring 2 has the bolt hole 7 (notch portion), but the relief portion 10 is formed on the fitting surface near (directly below) the bolt hole 7. It is formed. The axial length of the escape portion 10 is set to be longer than the axial length of the bolt hole 7 (notch portion). Therefore, even when a circumferential stress is generated when the inner ring 2 is fitted by an interference fit, the stress is unlikely to act on the periphery of the relief portion 10, and the bolt hole 7 or the vicinity thereof is not affected. Stress concentration can be reduced.

図２（ｂ）は、本発明の第２実施の形態の第１変形例に係る小鍔分離タイプ円筒ころ軸受の断面図である。   FIG. 2B is a cross-sectional view of a gavel separation type cylindrical roller bearing according to a first modification of the second embodiment of the present invention.

本変形例では、外輪（図示略）と、内輪２との間に、円筒ころ５が転動自在に介装してある。保持器は、ピンタイプ保持器２０であり、一対の円環部２１，２２と、ピン２３とを有している。   In this modification, a cylindrical roller 5 is interposed between an outer ring (not shown) and the inner ring 2 so as to be freely rollable. The cage is a pin type cage 20 and has a pair of annular portions 21 and 22 and a pin 23.

また、本変形例では、ピンタイプ保持器２０において、内輪２と、小鍔６とが分離してある。即ち、内輪２の端部には、内輪２と別体に設けた小鍔６が装着してある。この小鍔６は、保持器２０と円筒ころ５を組み込んだ後、内輪２のボルト孔７（切欠き部）に、ボルト８により締結してある。従って、先に、保持器２０と円筒ころ５を締結後、溶接部を研磨し、その後、内輪２に組み込む。そうすれば、研磨時の研磨粉等の塵芥を内輪に組み込む前に除去することができる。   In the present modification, the inner ring 2 and the gavel 6 are separated from each other in the pin type retainer 20. In other words, the edge of the inner ring 2 is provided with a gavel 6 provided separately from the inner ring 2. After the cage 20 and the cylindrical roller 5 have been assembled, the gavel 6 is fastened to the bolt hole 7 (notch portion) of the inner ring 2 with a bolt 8. Therefore, after the retainer 20 and the cylindrical roller 5 are fastened first, the welded portion is polished and then incorporated into the inner ring 2. Then, dust such as polishing powder at the time of polishing can be removed before being incorporated into the inner ring.

さらに、本変形例に於いても、内輪２の端面に、ボルト孔７（切欠き部）を有しているが、ボルト孔７の近傍（直下）の嵌め合い面に、逃げ部１０が形成してある。逃げ部１０の軸方向長さは、ボルト孔７（切欠き部）の軸方向長さより長くなるように設定してある。そのため、しまりばめにより、内輪２が嵌め合わされる際に、円周応力が発生した場合であっても、逃げ部１０の周辺には、応力が作用しにくく、ボルト孔７又はその近傍に於ける応力集中を緩和することができる。   Further, in this modified example, the end surface of the inner ring 2 has the bolt hole 7 (notch), but the relief portion 10 is formed on the fitting surface near (directly below) the bolt hole 7. It is. The axial length of the escape portion 10 is set to be longer than the axial length of the bolt hole 7 (notch portion). Therefore, even when a circumferential stress is generated when the inner ring 2 is fitted by an interference fit, the stress is unlikely to act on the periphery of the relief portion 10, and the bolt hole 7 or the vicinity thereof is not affected. Stress concentration can be reduced.

図２（ｃ）は、本発明の第２実施の形態の第２変形例に係る小鍔分離タイプ円筒ころ軸受の断面図である。   FIG.2 (c) is sectional drawing of the small collar separation type cylindrical roller bearing which concerns on the 2nd modification of 2nd Embodiment of this invention.

本変形例では、外輪１と、内輪（図示略）との間に、円筒ころ５が転動自在に介装してある。保持器は、ピンタイプ保持器２０であり、一対の円環部２１，２２と、ピン２３とを有している。   In this modification, a cylindrical roller 5 is interposed between an outer ring 1 and an inner ring (not shown) so as to be able to roll. The cage is a pin type cage 20 and has a pair of annular portions 21 and 22 and a pin 23.

また、本変形例では、ピンタイプ保持器２０において、外輪１と、小鍔６とが分離してある。即ち、外輪１の端部には、外輪１と別体に設けた小鍔６が装着してある。この小鍔６は、保持器２０と円筒ころ５を組み込んだ後、外輪１のボルト孔７（切欠き部）に、ボルト８により締結してある。従って、先に、保持器２０と円筒ころ５を締結後、溶接部を研磨し、その後、外輪１に組み込む。そうすれば、研磨時の研磨粉等の塵芥を外輪に組み込む前に除去することができる。   In the present modification, the outer ring 1 and the gavel 6 are separated in the pin type retainer 20. In other words, the edge of the outer ring 1 is attached with a gavel 6 provided separately from the outer ring 1. After the cage 20 and the cylindrical roller 5 are assembled, the gavel 6 is fastened to the bolt hole 7 (notch portion) of the outer ring 1 with a bolt 8. Therefore, after the retainer 20 and the cylindrical roller 5 are fastened first, the welded portion is polished and then incorporated into the outer ring 1. Then, dust such as polishing powder at the time of polishing can be removed before being incorporated into the outer ring.

さらに、本変形例に於いても、外輪１の端面に、ボルト孔７（切欠き部）を有しているが、ボルト孔７の近傍（直下）の嵌め合い面に、逃げ部１０が形成してある。逃げ部１０の軸方向長さは、ボルト孔７（切欠き部）の軸方向長さより長くなるように設定してある。そのため、しまりばめにより、外輪１が嵌め合わされる際に、円周応力が発生した場合であっても、逃げ部１０の周辺には、応力が作用しにくく、ボルト孔７又はその近傍に於ける応力集中を緩和することができる。   Further, in this modified example, the end surface of the outer ring 1 has the bolt hole 7 (notch), but the relief portion 10 is formed on the fitting surface near (directly below) the bolt hole 7. It is. The axial length of the escape portion 10 is set to be longer than the axial length of the bolt hole 7 (notch portion). Therefore, even when a circumferential stress is generated when the outer ring 1 is fitted by an interference fit, the stress is unlikely to act on the periphery of the escape portion 10, and the bolt hole 7 or the vicinity thereof is not affected. Stress concentration can be reduced.

なお、本発明は、上述した実施の形態に限定されず、種々変形可能である。   In addition, this invention is not limited to embodiment mentioned above, A various deformation | transformation is possible.

（ａ）は、本発明の第１実施の形態に係る小鍔分離タイプ円錐ころ軸受の断面図であり、（ｂ）は、（ａ）で破線により囲んだ部位の拡大断面図である。(A) is sectional drawing of the gavel separation type tapered roller bearing which concerns on 1st Embodiment of this invention, (b) is an expanded sectional view of the site | part enclosed with the broken line by (a). （ａ）は、本発明の第２実施の形態に係る小鍔分離タイプ円錐ころ軸受の断面図であり、（ｂ）は、本発明の第２実施の形態の第１変形例に係る小鍔分離タイプ円筒ころ軸受の断面図であり、（ｃ）は、本発明の第２実施の形態の第２変形例に係る小鍔分離タイプ円筒ころ軸受の断面図である。(A) is sectional drawing of the gavel separation type tapered roller bearing which concerns on 2nd Embodiment of this invention, (b) is the gavel which concerns on the 1st modification of 2nd Embodiment of this invention. It is sectional drawing of a separation type cylindrical roller bearing, (c) is sectional drawing of the gavel separation type cylindrical roller bearing which concerns on the 2nd modification of 2nd Embodiment of this invention. 従来例に係る小鍔分離タイプ円錐ころ軸受の断面図である。It is sectional drawing of the gavel separation type tapered roller bearing which concerns on a prior art example.

符号の説明Explanation of symbols

１ 外輪
２ 内輪
３ 円錐ころ
４ プレス保持器（かご型保持器）
５ 円筒ころ
６ 小鍔
７ ボルト孔（切欠き部）
８ ボルト
１０ 逃げ部
２０ ピンタイプ保持器
２１，２２ 円環部
２３ ピン DESCRIPTION OF SYMBOLS 1 Outer ring 2 Inner ring 3 Tapered roller 4 Press cage (cage type cage)
5 Cylindrical roller 6 Small rod 7 Bolt hole (notch)
8 Bolt 10 Relief part 20 Pin type cage 21, 22 Ring part 23 Pin

Claims (3)

一対の軌道輪の間に、ころを転動自在に介装し、
一方の軌道輪と、小鍔とを分離したころ軸受において、
一方の軌道輪の端面に、切欠き部を有し、
当該切欠き部の近傍の嵌め合い面に、逃げ部が形成してあることを特徴とするころ軸受。 A roller is interposed between a pair of race rings,
In a roller bearing that separates one bearing ring and a small collar,
One end of the race ring has a notch,
A roller bearing, wherein an escape portion is formed on a fitting surface in the vicinity of the notch. 前記逃げ部の軸方向長さは、前記切欠き部の軸方向長さよりも、長くなるように設定してあることを特徴とする請求項１に記載のころ軸受。   The roller bearing according to claim 1, wherein an axial length of the relief portion is set to be longer than an axial length of the notch portion. 前記切欠き部は、ボルト孔であることを特徴とする請求項１又は２に記載のころ軸受。   The roller bearing according to claim 1, wherein the notch is a bolt hole.
JP2005022070A 2005-01-28 2005-01-28 Roller bearing Withdrawn JP2006207731A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Publication Number Publication Date
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Application Number Title Priority Date Filing Date
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Country Link
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009185935A (en) * 2008-02-07 2009-08-20 Jtekt Corp Tapered roller bearing, inner ring structure, and method of assembling tapered roller bearing
JP2009228760A (en) * 2008-03-21 2009-10-08 Jtekt Corp Tapered roller bearing, inner ring of tapered roller bearing and assembling method of tapered roller bearing
CN106164515A (en) * 2014-04-07 2016-11-23 舍弗勒技术股份两合公司 Taper roll bearing, the method manufacturing taper roll bearing and the reliable method installing taper roll bearing
CN112431853A (en) * 2020-12-04 2021-03-02 洛阳新强联回转支承股份有限公司 Super-huge tapered roller bearing without expanding and contracting basket-shaped retainer
CN112443572A (en) * 2020-12-04 2021-03-05 洛阳新强联回转支承股份有限公司 Super-huge tapered roller turntable bearing with detachable small flange

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009185935A (en) * 2008-02-07 2009-08-20 Jtekt Corp Tapered roller bearing, inner ring structure, and method of assembling tapered roller bearing
JP2009228760A (en) * 2008-03-21 2009-10-08 Jtekt Corp Tapered roller bearing, inner ring of tapered roller bearing and assembling method of tapered roller bearing
CN106164515A (en) * 2014-04-07 2016-11-23 舍弗勒技术股份两合公司 Taper roll bearing, the method manufacturing taper roll bearing and the reliable method installing taper roll bearing
CN112431853A (en) * 2020-12-04 2021-03-02 洛阳新强联回转支承股份有限公司 Super-huge tapered roller bearing without expanding and contracting basket-shaped retainer
CN112443572A (en) * 2020-12-04 2021-03-05 洛阳新强联回转支承股份有限公司 Super-huge tapered roller turntable bearing with detachable small flange

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