JP2015172416A - Roller bearing - Google Patents

Roller bearing Download PDF

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JP2015172416A
JP2015172416A JP2014048942A JP2014048942A JP2015172416A JP 2015172416 A JP2015172416 A JP 2015172416A JP 2014048942 A JP2014048942 A JP 2014048942A JP 2014048942 A JP2014048942 A JP 2014048942A JP 2015172416 A JP2015172416 A JP 2015172416A
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Prior art keywords
sleeve
link
links
axial direction
circumferential direction
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Pending
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JP2014048942A
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Japanese (ja)
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昭二郎 竹内
Shojiro Takeuchi
昭二郎 竹内
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JTEKT Corp
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JTEKT Corp
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Priority to JP2014048942A priority Critical patent/JP2015172416A/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
    • 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
    • F16C33/52—Cages for rollers or needles with no part entering between, or touching, the bearing surfaces of the rollers
    • F16C33/523—Cages for rollers or needles with no part entering between, or touching, the bearing surfaces of the rollers with pins extending into holes or bores on the axis of the rollers
    • F16C33/526—Cages for rollers or needles with no part entering between, or touching, the bearing surfaces of the rollers with pins extending into holes or bores on the axis of the rollers extending through the rollers and joining two lateral cage parts
    • 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
    • F16C2300/10—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

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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 provide a roller bearing which is easy to transport during assembly, and in which a lower contact resistance occurs between the outer periphery of a sleeve and the inner periphery of a roller.SOLUTION: The roller bearing includes first links 41, 50 arranged on both axial sides at a circumferential space from each other, second links 45, 55 arranged on both axial sides inside the first links 41, 50 between the first links 41, 50 at a circumferential space from each other, a cylindrical sleeve 70 via which the second links 45, 55 on both axial sides are connected at both circumferential ends, a pin 60 which is inserted through the inner periphery of the sleeve 70 and via which the first links 41, 50 on both axial sides are connected at both circumferential ends, and rollers 30 rotatably fitted to the outer periphery of the sleeve 70. The sleeve 70 has the drum-shaped outer periphery of which the outer diameter at its axial center is larger and the outer diameter at each axial end is smaller.

Description

本発明は、ころ軸受に関する。   The present invention relates to a roller bearing.

特許文献１に示すようなころ軸受がある。このものは、複数のころを、ころの内周に嵌合されるピンと、複数のピンを連結する側板とで連結している。側板は、炭素鋼からなり、円盤状で直径が１ｍ〜３ｍと非常に大きく、しかも重量物であるので、搬送経路上のスペースを確保した上で、クレーンを利用しないと運搬できない。従って、運搬が困難であった。   There is a roller bearing as shown in Patent Document 1. In this device, a plurality of rollers are connected by a pin fitted to the inner periphery of the roller and a side plate connecting the plurality of pins. The side plate is made of carbon steel, has a disk shape and a very large diameter of 1 m to 3 m, and is a heavy object. Therefore, the side plate cannot be transported unless a crane is used after securing a space on the conveyance path. Therefore, transportation was difficult.

特許文献２に示すようなころ軸受がある。このものは、チェーンコンベアの一装置である。このものは、複数のころを、ころの内周に嵌合される円筒状のスリーブと、一対のスリーブを連結する第１リンクと、スリーブの内周に嵌合されるピンと、一対のピンを連結する第２リンクとで連結している。   There is a roller bearing as shown in Patent Document 2. This is one device of a chain conveyor. This includes a plurality of rollers, a cylindrical sleeve fitted to the inner circumference of the roller, a first link connecting the pair of sleeves, a pin fitted to the inner circumference of the sleeve, and a pair of pins. It connects with the 2nd link to connect.

特開２００３−２６９４６７号公報JP 2003-269467 A 特開平３−２５６９０４号公報JP-A-3-256904

特許文献１の側板に代えて、特許文献２の第１リンクおよび第２リンクを使用することが考えられる。このようにすれば、大きな側板が無くなるため、運搬が容易になる。しかし、第１リンクおよび第２リンク間で相互に動きやすくなるため、スリーブの外周およびころの内周が片当たりしやすくなり、片当たりする場所がころ毎に異なるため、接触抵抗が大きくなる。本発明は、上述した問題点を解決するためになされたもので、その目的とするところは、組付け時の運搬を容易にするとともに、接触抵抗を小さくしたころ軸受を提供することである。   Instead of the side plate of Patent Document 1, it is conceivable to use the first link and the second link of Patent Document 2. In this way, since a large side plate is eliminated, transportation becomes easy. However, since it becomes easy to move between the first link and the second link, the outer periphery of the sleeve and the inner periphery of the roller are likely to come into contact with each other, and the contact location is different for each roller, so that the contact resistance is increased. The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a roller bearing that facilitates transportation during assembly and has reduced contact resistance.

請求項１は、軸方向の両側に配置されるとともに円周方向に間隔を空けて配置される第１リンクと、前記軸方向に両側で前記第１リンクの内側に配置されるとともに前記円周方向に間隔を空けて前記第１リンク間に配置される第２リンクと、前記軸方向の両側の前記第２リンクを前記円周方向の両端で連結する円筒状のスリーブと、前記スリーブの内周に挿通され、前記軸方向の両側の前記第１リンクを前記円周方向の両端で連結するピンと、前記スリーブの外周に回転可能に嵌合されるころとを備え、スリーブの外周を、軸方向の中央の外径が大きく、軸方向の両端の外径が小さくなるように、太鼓状に形成したことを特徴とするものである。   The present invention provides a first link disposed on both sides in the axial direction and spaced in the circumferential direction, and disposed on the inner side of the first link on both sides in the axial direction and the circumference. A second sleeve disposed between the first links at intervals in a direction, a cylindrical sleeve connecting the second links on both sides in the axial direction at both ends in the circumferential direction, A pin inserted through the circumference and connecting the first links on both sides in the axial direction at both ends in the circumferential direction; and a roller rotatably fitted to the outer circumference of the sleeve. It is characterized by being formed in a drum shape so that the outer diameter at the center in the direction is large and the outer diameter at both ends in the axial direction is small.

上述した構成によれば、複数の第１リンクおよび複数の第２リンクに分割することによって、組付け時の運搬が容易になる。スリーブの外周を、軸方向の中央の外径が大きく、軸方向の両端の外径が小さくなるように、太鼓状に形成したので、スリーブの外周およびころの外周との当たりが、全てのころにおいて同じとなり、スリーブの外周およびころの内周の接触抵抗を小さくしたころ軸受を提供することができる。   According to the structure mentioned above, the conveyance at the time of an assembly | attachment becomes easy by dividing | segmenting into a some 1st link and a some 2nd link. Since the outer periphery of the sleeve is formed in a drum shape so that the outer diameter at the center in the axial direction is large and the outer diameter at both ends in the axial direction is small, the contact between the outer periphery of the sleeve and the outer periphery of the rollers is Thus, it is possible to provide a roller bearing in which the contact resistance between the outer periphery of the sleeve and the inner periphery of the roller is reduced.

本発明の一実施形態にかかる円すいころ軸受の縦断面図である。It is a longitudinal cross-sectional view of the tapered roller bearing concerning one Embodiment of this invention. 本発明の一実施形態にかかる図１の拡大断面図である。It is an expanded sectional view of FIG. 1 concerning one Embodiment of this invention. 本発明の一実施形態にかかる図１のＡ矢視図である。It is A arrow line view of FIG. 1 concerning one Embodiment of this invention.

本発明の一実施形態である円すいころ軸受１０を図１に基づいて説明する。円すいころ軸受１０は、環状の外輪１１と、この外輪１１の内周側に配置される環状の内輪２０と、外輪１１および内輪２０間で円周方向に複数配置される円すいころ３０と、複数の円すいころ３０を円周方向に等間隔に配置するとともに回転可能に保持する保持器４０とを備えている。   A tapered roller bearing 10 according to an embodiment of the present invention will be described with reference to FIG. The tapered roller bearing 10 includes an annular outer ring 11, an annular inner ring 20 disposed on the inner peripheral side of the outer ring 11, a plurality of tapered rollers 30 disposed in the circumferential direction between the outer ring 11 and the inner ring 20, and a plurality of tapered rollers 30. The tapered rollers 30 are arranged at equal intervals in the circumferential direction, and a retainer 40 that holds the tapered rollers 30 rotatably.

外輪１１の内周には軸線に対し傾斜した外輪用軌道面１２が形成され、内輪２０の外周には軸線に対して傾斜した内輪用軌道面２１が形成されている。   An outer ring raceway surface 12 inclined with respect to the axis is formed on the inner periphery of the outer ring 11, and an inner ring raceway surface 21 inclined with respect to the axis is formed on the outer periphery of the inner ring 20.

円すいころ３０は、円すい形状の頂部をカットした形状を有している。円すいころ３０の外周には転動面３１が形成され、転動面３１が外輪用軌道面１２および内輪用軌道面２１に接触するようになっている。円すいころ３０の軸心には、円筒状の被摺動穴３２が軸方向に貫通して形成されている。   The tapered roller 30 has a shape obtained by cutting the top of the tapered shape. A rolling surface 31 is formed on the outer periphery of the tapered roller 30, and the rolling surface 31 comes into contact with the outer ring raceway surface 12 and the inner ring raceway surface 21. A cylindrical sliding hole 32 is formed in the axial center of the tapered roller 30 so as to penetrate in the axial direction.

保持器４０は、軸方向の両側に配置されるとともに円周方向に間隔を空けて配置される第１リンク４１、５０と、軸方向に両側で第１リンク４１、５０の内側に配置されるとともに円周方向に間隔を空けて第１リンク４１、５０間に配置される第２リンク４５、５５と、軸方向の両側の第２リンク４５、５５を円周方向の両端で連結する円筒状のスリーブ７０と、スリーブ７０の内周に挿通され、軸方向の両側の第１リンク４１、５０を円周方向の両端で連結するピン６０とを備えている。   The cage 40 is arranged on both sides in the axial direction and is arranged at intervals in the circumferential direction, and is arranged inside the first links 41 and 50 on both sides in the axial direction. In addition, a cylindrical shape that connects the second links 45 and 55 disposed between the first links 41 and 50 with an interval in the circumferential direction and the second links 45 and 55 on both sides in the axial direction at both ends in the circumferential direction. And a pin 60 that is inserted into the inner periphery of the sleeve 70 and connects the first links 41 and 50 on both sides in the axial direction at both ends in the circumferential direction.

スリーブ７０は、円筒状を有し、スリーブ７０の外周は、軸方向の中央の外径が大きく、軸方向の両端の外径が小さくなるように、太鼓状に形成した。スリーブ７０は、軸方向の両端の小径の小径円筒部７１と、軸方向の中央の太鼓状の太鼓円筒部７２とからなっている。小径円筒部７１の外周は、軸線と平行な面を有する。太鼓円筒部７２は、円筒状の状態から、へらを太鼓円筒部７２の内周から外径方向に押し当てながら太鼓円筒部７２を回転させることによって、太鼓状に塑性変形させたものである。   The sleeve 70 has a cylindrical shape, and the outer periphery of the sleeve 70 is formed in a drum shape so that the outer diameter at the center in the axial direction is large and the outer diameters at both ends in the axial direction are small. The sleeve 70 includes a small-diameter small cylindrical portion 71 at both ends in the axial direction and a drum-shaped drum cylindrical portion 72 at the center in the axial direction. The outer periphery of the small diameter cylindrical portion 71 has a surface parallel to the axis. The drum cylinder 72 is plastically deformed into a drum from the cylindrical state by rotating the drum cylinder 72 while pressing a spatula from the inner periphery of the drum cylinder 72 to the outer diameter direction.

第２リンク４５の円周方向の両端には第２被嵌合穴４６が形成され、第２リンク５５の円周方向の両端には第３被嵌合穴５６が形成されている。第２被嵌合穴４６にはスリーブ７０の一端が圧入嵌合され、第３被嵌合穴５６にはスリーブ７０の他端が圧入嵌合されている。こうして、第２リンク４５および第２リンク５５が、スリーブ７０を介して一体的に連結されている。   Second fitted holes 46 are formed at both ends of the second link 45 in the circumferential direction, and third fitted holes 56 are formed at both ends of the second link 55 in the circumferential direction. One end of the sleeve 70 is press-fitted into the second fitted hole 46, and the other end of the sleeve 70 is press-fitted into the third fitted hole 56. Thus, the second link 45 and the second link 55 are integrally connected via the sleeve 70.

ピン６０は、一端の外周におねじ６１が形成され、他端の端面に工具係合溝６２が形成されている。工具係合溝６２は、図略のマイナスドライバーが係合する溝である。   As for the pin 60, the screw 61 is formed in the outer periphery of one end, and the tool engagement groove | channel 62 is formed in the end surface of the other end. The tool engagement groove 62 is a groove with which a not-shown minus driver is engaged.

第１リンク４１の円周方向の両端にはめねじ４２が形成され、第１リンク５０の円周方向の両端には第１被嵌合穴５１が形成されている。めねじ４２にはおねじ６１が螺合され、第１被嵌合穴５１にはピン６０が隙間嵌合されている。第１リンク５０のテーパ穴およびピン６０の他端のテーパ面間には、溶接の肉盛り６３が設けられ、溶接の肉盛り６３を介してピン６０および第１リンク５０が一体化されている。   Female screws 42 are formed at both ends of the first link 41 in the circumferential direction, and first fitted holes 51 are formed at both ends of the first link 50 in the circumferential direction. A male screw 61 is screwed into the female screw 42, and a pin 60 is fitted in the first fitted hole 51 with a gap. Between the taper hole of the first link 50 and the taper surface of the other end of the pin 60, a weld overlay 63 is provided, and the pin 60 and the first link 50 are integrated via the weld overlay 63. .

次に上述した構成にもとづいて、円すいころ軸受１０の組立て動作を説明する。   Next, the assembly operation of the tapered roller bearing 10 will be described based on the configuration described above.

第２リンク４５の円周方向の一端の第２被嵌合穴４６に、スリーブ７０の一端の小径円筒部７１を圧入嵌合し、第２リンク４５の円周方向の他端の第２被嵌合穴４６に、スリーブ７０の一端の小径円筒部７１を圧入嵌合する。こうして、一対のスリーブ７０が第２リンク４５に一体化される。   The small-diameter cylindrical portion 71 at one end of the sleeve 70 is press-fitted into the second fitting hole 46 at one end in the circumferential direction of the second link 45, and the second portion at the other end in the circumferential direction of the second link 45 is fitted. The small-diameter cylindrical portion 71 at one end of the sleeve 70 is press-fitted into the fitting hole 46. Thus, the pair of sleeves 70 are integrated with the second link 45.

太鼓円筒部７２の外周にグリースを塗布する。一対のスリーブ７０に円すいころ３０を軸方向に挿入し、スリーブ７０の太鼓円筒部７２に円すいころ３０の被摺動穴３２を隙間嵌合させる。太鼓円筒部７２および被摺動穴３２間にグリースが存在する。   Grease is applied to the outer periphery of the drum cylinder 72. The tapered roller 30 is inserted into the pair of sleeves 70 in the axial direction, and the sliding hole 32 of the tapered roller 30 is fitted into the drum cylindrical portion 72 of the sleeve 70 with a gap. Grease exists between the drum cylinder 72 and the sliding hole 32.

第２リンク５５の円周方向の一端の第３被嵌合穴５６に、スリーブ７０の他端の小径円筒部７１を圧入嵌合すると同時に、第２リンク５５の円周方向の他端の第３被嵌合穴５６に、スリーブ７０の他端の小径円筒部７１を圧入嵌合する。こうして、一対のスリーブ７０が第２リンク５５に一体化されると同時に、一対の円すいころ３０が一対のスリーブ７０および第２リンク４５、５５を介して互いに連結される。   The small-diameter cylindrical portion 71 at the other end of the sleeve 70 is press-fitted into the third fitting hole 56 at one end in the circumferential direction of the second link 55 and at the same time the second end at the other end in the circumferential direction of the second link 55. The small diameter cylindrical portion 71 at the other end of the sleeve 70 is press-fitted into the three fitted holes 56. In this way, the pair of sleeves 70 are integrated with the second link 55, and at the same time, the pair of tapered rollers 30 are connected to each other via the pair of sleeves 70 and the second links 45, 55.

上述した動作を繰り返すことによって、一対の円すいころ３０が一対のスリーブ７０および第２リンク４５、５５を介して互いに連結された第１ユニットを多数作る。   By repeating the above-described operation, a plurality of first units in which the pair of tapered rollers 30 are connected to each other via the pair of sleeves 70 and the second links 45 and 55 are formed.

図略のテーブル上に外輪１１を大径側が上に、小径側が下になるように載置する。外輪１１の外輪用軌道面１２に複数の第１ユニットを円周方向に並べて載置する。   The outer ring 11 is placed on a table (not shown) so that the large diameter side is up and the small diameter side is down. A plurality of first units are placed side by side in the circumferential direction on the outer ring raceway surface 12 of the outer ring 11.

第１リンク４１の円周方向の一端のめねじ４２にピン６０のおねじ６１を螺合し、第１リンク４１の円周方向の他端のめねじ４２にピン６０のおねじ６１を螺合する。こうして、一対のピン６０が第１リンク４１に一体化される。   The male screw 61 of the pin 60 is screwed into the female screw 42 at one end in the circumferential direction of the first link 41, and the male screw 61 of the pin 60 is screwed into the female screw 42 at the other end in the circumferential direction of the first link 41. Match. Thus, the pair of pins 60 are integrated with the first link 41.

この動作を繰り返すことによって、一対のピン６０と第１リンク４１が一体化された第２ユニットを多数作る。   By repeating this operation, many second units in which the pair of pins 60 and the first links 41 are integrated are formed.

一方の第１ユニットのスリーブ７０に第２ユニットの一方のピン６０を挿入すると同時に、他方の第１ユニットのスリーブ７０に第２ユニットの他方のピン６０を挿入する。第２リンク５５のテーパ穴およびピン６０の他端テーパ面間を溶接し、第２リンク５５のテーパ穴およびピン６０の他端テーパ面間に溶接の肉盛り６３を設け、溶接の肉盛り６３を介してピン６０および第２リンク５５を一体化する。こうして、一対の第１ユニットが第２ユニットを介して互いに連結される。   At the same time as inserting one pin 60 of the second unit into the sleeve 70 of one first unit, the other pin 60 of the second unit is inserted into the sleeve 70 of the other first unit. A weld buildup 63 is provided between the taper hole of the second link 55 and the other end taper surface of the pin 60, and a weld buildup 63 is provided between the taper hole of the second link 55 and the other end taper surface of the pin 60. The pin 60 and the second link 55 are integrated with each other. Thus, the pair of first units are coupled to each other via the second unit.

この動作を繰り返すことによって、第１ユニット同士を第２ユニットを介して互いに連結し、最終的には、第１リンク４１および第２リンク４５を交互に連結して環状にし、第１リンク５０および第２リンク５５を交互に連結して環状にする。   By repeating this operation, the first units are connected to each other via the second unit, and finally the first link 41 and the second link 45 are alternately connected to form an annular shape. The second links 55 are alternately connected to form an annular shape.

環状に配置された複数の円すいころ３０の内周に、内輪２０を軸方向に挿入し、円すいころ３０の転動面３１に内輪用軌道面２１が接触する。こうして作られた円すいころ軸受１０は、風力発電等に使用される。   The inner ring 20 is inserted axially into the inner periphery of the plurality of tapered rollers 30 arranged in an annular shape, and the inner ring raceway surface 21 contacts the rolling surface 31 of the tapered roller 30. The tapered roller bearing 10 made in this way is used for wind power generation or the like.

続いて、円すいころ軸受１０の動作を説明する。   Subsequently, the operation of the tapered roller bearing 10 will be described.

円すいころ３０は、転動面３１が外輪用軌道面１２および内輪用軌道面２１に接触して軸方向並びに径方向の位置が決まる。保持器４０は、太鼓円筒部７２が被摺動穴３２に接触して軸方向並び径方向の位置が決まる。   In the tapered roller 30, the rolling surface 31 comes into contact with the outer ring raceway surface 12 and the inner ring raceway surface 21, and the positions in the axial direction and the radial direction are determined. In the retainer 40, the drum cylindrical portion 72 comes into contact with the sliding hole 32 and the position in the axial direction and the radial direction is determined.

この状態で内輪２０を回転させると、円すいころ３０は外輪用軌道面１２および内輪用軌道面２１上を転動しながら、内輪２０の回転方向と同方向へ移動する。   When the inner ring 20 is rotated in this state, the tapered roller 30 moves in the same direction as the rotation direction of the inner ring 20 while rolling on the outer ring raceway surface 12 and the inner ring raceway surface 21.

図１に示す状態からスリーブ７０が時計方向あるいは反時計方向に若干傾いても、太鼓円筒部７２の軸方向の中央で被摺動穴３２に接触する。従って、太鼓円筒部７２と被摺動穴３２との接触状態が、円すいころ３０毎に大きく異なることが無いので、スリーブ７０の外周および円すいころ３０の内周の接触抵抗を小さくできる。   Even if the sleeve 70 is slightly inclined clockwise or counterclockwise from the state shown in FIG. 1, the sleeve 70 contacts the sliding hole 32 at the center of the drum cylindrical portion 72 in the axial direction. Therefore, the contact state between the drum cylindrical portion 72 and the sliding hole 32 is not greatly different for each tapered roller 30, so that the contact resistance between the outer periphery of the sleeve 70 and the inner periphery of the tapered roller 30 can be reduced.

本発明はこうした実施形態に何等限定されるものではなく、本発明の要旨を逸脱しない範囲において、種々なる態様で実施し得ることは勿論である。   The present invention is not limited to these embodiments, and can of course be implemented in various modes without departing from the gist of the present invention.

上述した実施形態は、ころとして円すいころ３０を適用した。他の実施形態として、ころとして円筒ころを適用しても良い。   In the embodiment described above, the tapered roller 30 is applied as a roller. As another embodiment, cylindrical rollers may be applied as the rollers.

上述した実施形態は、円筒状の状態から、へらを太鼓円筒部７２の内周から外径方向に押し当てながら太鼓円筒部７２を回転させることによって、太鼓状に塑性変形させることによって、軸方向の両端の小径の小径円筒部７１と、軸方向の中央の太鼓状の太鼓円筒部７２とからなるスリーブ７０を製作した。他の実施形態として、円筒状の状態から、旋削で外周を削ることによって、軸方向の両端の小径の小径円筒部と、軸方向の中央の太鼓状の太鼓円筒部とからなるスリーブを製作しても良い。   In the embodiment described above, from the cylindrical state, the drum cylinder portion 72 is plastically deformed by rotating the drum cylinder portion 72 while pressing the spatula from the inner periphery of the drum cylinder portion 72 to the outer diameter direction. A sleeve 70 composed of a small-diameter cylindrical portion 71 at both ends and a drum-shaped drum cylinder portion 72 at the center in the axial direction was manufactured. As another embodiment, a sleeve including a small-diameter small-diameter cylindrical portion at both ends in the axial direction and a drum-shaped drum cylinder portion at the center in the axial direction is manufactured by cutting the outer periphery by turning from a cylindrical state. May be.

３０：円すいころ（ころ）、３２：被摺動穴、４０：保持器、４１：第１リンク、４５：第２リンク、５０：第１リンク、５５：第２リンク、６０：ピン、７０：スリーブ、７１：小径円筒部、７２：太鼓円筒部 30: Tapered roller (roller), 32: Sliding hole, 40: Cage, 41: First link, 45: Second link, 50: First link, 55: Second link, 60: Pin, 70: Sleeve 71: Small diameter cylindrical part 72: Taiko cylindrical part

Claims (1)

軸方向の両側に配置されるとともに円周方向に間隔を空けて配置される第１リンクと、前記軸方向に両側で前記第１リンクの内側に配置されるとともに前記円周方向に間隔を空けて前記第１リンク間に配置される第２リンクと、前記軸方向の両側の前記第２リンクを前記円周方向の両端で連結する円筒状のスリーブと、前記スリーブの内周に挿通され、前記軸方向の両側の前記第１リンクを前記円周方向の両端で連結するピンと、前記スリーブの外周に回転可能に嵌合されるころとを備え、前記スリーブの外周を、前記軸方向の中央の外径が大きく、前記軸方向の両端の外径が小さくなるように、太鼓状に形成したことを特徴とするころ軸受。 A first link disposed on both sides in the axial direction and spaced in the circumferential direction; and a first link disposed on the inner side of the first link on both sides in the axial direction and spaced in the circumferential direction. A second sleeve disposed between the first links, a cylindrical sleeve that connects the second links on both sides in the axial direction at both ends in the circumferential direction, and an inner circumference of the sleeve; A pin for connecting the first link on both sides in the axial direction at both ends in the circumferential direction; and a roller that is rotatably fitted to the outer periphery of the sleeve. The roller bearing is characterized in that it is formed in a drum shape so that the outer diameter thereof is large and the outer diameters at both ends in the axial direction are small.
JP2014048942A 2014-03-12 2014-03-12 Roller bearing Pending JP2015172416A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61133144U (en) * 1985-02-06 1986-08-20
JPH03256904A (en) * 1990-03-05 1991-11-15 Daido Kogyo Co Ltd Bearing device
WO2008000249A1 (en) * 2006-06-30 2008-01-03 Schaeffler Kg Bearing cage comprising a plurality of connecting links
JP2010001914A (en) * 2008-06-18 2010-01-07 Tsubakimoto Custom Chain Co Chain
JP2012237431A (en) * 2011-05-13 2012-12-06 Tsubakimoto Chain Co Roller bearing module, and roller bearing
JP2014005932A (en) * 2012-05-28 2014-01-16 Jtekt Corp Retainer for rolling bearing, and rolling bearing including the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61133144U (en) * 1985-02-06 1986-08-20
JPH03256904A (en) * 1990-03-05 1991-11-15 Daido Kogyo Co Ltd Bearing device
WO2008000249A1 (en) * 2006-06-30 2008-01-03 Schaeffler Kg Bearing cage comprising a plurality of connecting links
JP2010001914A (en) * 2008-06-18 2010-01-07 Tsubakimoto Custom Chain Co Chain
JP2012237431A (en) * 2011-05-13 2012-12-06 Tsubakimoto Chain Co Roller bearing module, and roller bearing
JP2014005932A (en) * 2012-05-28 2014-01-16 Jtekt Corp Retainer for rolling bearing, and rolling bearing including the same

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