JP5218231B2 - Roller bearing cage, inner ring assembly, outer ring assembly and rolling bearing provided with the cage - Google Patents

Roller bearing cage, inner ring assembly, outer ring assembly and rolling bearing provided with the cage Download PDF

Info

Publication number
JP5218231B2
JP5218231B2 JP2009092251A JP2009092251A JP5218231B2 JP 5218231 B2 JP5218231 B2 JP 5218231B2 JP 2009092251 A JP2009092251 A JP 2009092251A JP 2009092251 A JP2009092251 A JP 2009092251A JP 5218231 B2 JP5218231 B2 JP 5218231B2
Authority
JP
Japan
Prior art keywords
pocket
peripheral surface
inner ring
cage
rolling bearing
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.)
Expired - Fee Related
Application number
JP2009092251A
Other languages
Japanese (ja)
Other versions
JP2010242860A (en
Inventor
数也 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.)
JTEKT Corp
Original Assignee
JTEKT Corp
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 JTEKT Corp filed Critical JTEKT Corp
Priority to JP2009092251A priority Critical patent/JP5218231B2/en
Priority to US12/753,999 priority patent/US8591121B2/en
Priority to EP10159126A priority patent/EP2239473B1/en
Priority to KR1020100031322A priority patent/KR101576072B1/en
Publication of JP2010242860A publication Critical patent/JP2010242860A/en
Application granted granted Critical
Publication of JP5218231B2 publication Critical patent/JP5218231B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

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

Description

本発明は、工作機械等、高速回転する軸を好適に支持することが可能な転がり軸受用保持器、並びにこれを備えた内輪組立体、外輪組立体、および転がり軸受に関する。   The present invention relates to a rolling bearing cage capable of suitably supporting a shaft that rotates at high speed, such as a machine tool, and an inner ring assembly, an outer ring assembly, and a rolling bearing provided with the cage.

下記特許文献１には、工作機械の主軸を支持するために使用される転がり軸受が開示されている。この工作機械の主軸は、工具側と反工具側とで異なる転がり軸受によって支持されており、反工具側では主軸の熱膨張等を逃がすために、主軸の軸方向変位を許容可能な円筒ころ軸受が使用されている。
この円筒ころ軸受は、外周に軌道を有する内輪と、内周に軌道を有する外輪と、内外輪の各軌道間に転動自在に配置された複数の円筒ころと、この円筒ころを周方向で所定間隔に保持する保持器とを備えている。 Patent Document 1 listed below discloses a rolling bearing used for supporting a main shaft of a machine tool. The spindle of this machine tool is supported by different rolling bearings on the tool side and the non-tool side. On the counter-tool side, in order to escape the thermal expansion of the spindle, a cylindrical roller bearing that can allow axial displacement of the spindle Is used.
The cylindrical roller bearing includes an inner ring having a raceway on the outer periphery, an outer ring having a raceway on the inner periphery, a plurality of cylindrical rollers arranged to roll between the raceways of the inner and outer rings, and the cylindrical roller in the circumferential direction. And a cage for holding at a predetermined interval.

また、特許文献１記載の円筒ころ軸受に使用されている保持器は、合成樹脂製とされており、図６に示すように、円環状に形成された軸方向一対の環状部１２１と、一対の環状部１２１間に架設された周方向に複数の柱部１２２とを備え、一対の環状部１２１および周方向に隣接する柱部１２２の間に円筒ころ１１３を収容するポケット１２３が形成されている。各柱部１２２の周方向両端部には、ポケット１２３側かつ径方向外側に向けて突出する突起部１３０が二股状に形成されている。このような保持器１１４を使用した円筒ころ軸受を組み立てる場合、まず、中間段階として、内輪１１２の外周側に保持器１１４を配置し、この保持器１１４のポケット１２３内に円筒ころ１１３を収容して内輪組立体を組み立てる。この内輪組立体の状態で、ポケット１２３内の円筒ころ１１３は突起部１３０によって径方向外方へ抜け落ちないように押さえられる。そして、この内輪組立体の外周部に外輪を嵌合することによって、円筒ころ軸受を組み立てる。   Further, the cage used in the cylindrical roller bearing described in Patent Document 1 is made of synthetic resin, and as shown in FIG. 6, a pair of axially-shaped annular portions 121 formed in an annular shape and a pair of A plurality of column portions 122 extending between the annular portions 121 in the circumferential direction, and a pocket 123 for accommodating the cylindrical roller 113 is formed between the pair of annular portions 121 and the column portions 122 adjacent in the circumferential direction. Yes. Protruding portions 130 that protrude toward the pocket 123 side and radially outward are formed in a bifurcated shape at both circumferential ends of each column portion 122. When assembling a cylindrical roller bearing using such a cage 114, first, as an intermediate stage, the cage 114 is disposed on the outer peripheral side of the inner ring 112, and the cylindrical roller 113 is accommodated in the pocket 123 of the cage 114. Assemble the inner ring assembly. In this state of the inner ring assembly, the cylindrical roller 113 in the pocket 123 is pressed by the protrusion 130 so as not to fall out radially outward. And a cylindrical roller bearing is assembled by fitting an outer ring | wheel to the outer peripheral part of this inner ring assembly.

特開２００４−３１６７５７号公報JP 2004-316757 A

特許文献１記載の技術において、工作機械の主軸が高速回転すると、円筒ころ軸受の保持器１１４と円筒ころ１１３との接触力も大きくなるため、ポケット１２３内に収容された円筒ころ１１３がその両側の突起部１３０の間に食い込み、回転抵抗が増大する。したがって、このような突起部１３０間に対する円筒ころ１１３の食い込みを防止して主軸の高速回転に対応するには、突起部１３０の剛性を高めることが要求される。   In the technique described in Patent Document 1, when the spindle of the machine tool rotates at a high speed, the contact force between the retainer 114 of the cylindrical roller bearing and the cylindrical roller 113 also increases, so that the cylindrical rollers 113 accommodated in the pocket 123 are on both sides. Biting between the protrusions 130 increases the rotational resistance. Therefore, in order to prevent the cylindrical rollers 113 from biting between the protrusions 130 and cope with high-speed rotation of the main shaft, it is required to increase the rigidity of the protrusions 130.

一方、特許文献１の円筒ころ軸受の内輪組立体を組み立てる場合、ポケット１２３の周方向両側に形成された突起部１３０間に円筒ころ１１３を押し込むことによって突起部１３０を周方向外側に広げるように弾性変形させる必要がある。そのため、突起部１３０の剛性があまりに高いと円筒ころ１１３の組み付けが困難になるともに、突起部１３０の基部（特に、柱部１２２の外周面１３６と側面との境界部Ｐ）において局部応力が発生しやすくなるという問題がある。   On the other hand, when assembling the inner ring assembly of the cylindrical roller bearing of Patent Document 1, the cylindrical roller 113 is pushed between the protruding portions 130 formed on both sides in the circumferential direction of the pocket 123 so that the protruding portion 130 is expanded outward in the circumferential direction. It must be elastically deformed. Therefore, when the rigidity of the protrusion 130 is too high, it is difficult to assemble the cylindrical roller 113, and local stress is generated at the base of the protrusion 130 (particularly, the boundary portion P between the outer peripheral surface 136 and the side surface of the column 122). There is a problem that it becomes easy to do.

したがって、本発明は、突起部の剛性をそれほど低下させずに円筒ころの組付けを容易にし、局部応力の発生を防止することができる転がり軸受用保持器、並びに、この保持器を備えた内輪組立体、外輪組立体、および転がり軸受を提供することを目的とする。   Accordingly, the present invention provides a rolling bearing retainer that can easily assemble cylindrical rollers and prevent the occurrence of local stress without significantly reducing the rigidity of the protrusion, and an inner ring provided with the retainer. An object is to provide an assembly, an outer ring assembly, and a rolling bearing.

本発明の転がり軸受用保持器（請求項１）は、円環状に形成された軸方向一対の環状部と、周方向に一定間隔をあけて前記一対の環状部の間に架設された複数の柱部とを備え、一対の環状部と周方向に隣接する柱部との間に転がり軸受の転動体を収容するポケットを備えた転がり軸受用保持器であって、前記ポケットを挟んで隣接する柱部に、当該ポケット側かつ径方向外側に突出し、当該ポケット内に収容された転動体を径方向外側から押さえる突起部が形成され、この突起部の基部に対して軸方向に隣接する前記柱部の外周面に、当該ポケット側へ向かうに従い漸次径方向内側へ傾斜する傾斜面が形成されていることを特徴とする。   The rolling bearing cage of the present invention (Claim 1) includes a plurality of annular portions formed in an annular shape and a plurality of spanned portions spaced between the pair of annular portions in the circumferential direction. A rolling bearing retainer comprising a column portion, and a pocket for accommodating a rolling element of a rolling bearing between a pair of annular portions and a column portion adjacent in the circumferential direction, and adjacent to each other with the pocket interposed therebetween The column portion is formed with a protrusion that protrudes radially outward from the pocket and presses the rolling element housed in the pocket from the radially outer side, and is adjacent to the base of the protrusion in the axial direction. An inclined surface that is gradually inclined inward in the radial direction toward the pocket side is formed on the outer peripheral surface of the portion.

また、本発明の転がり軸受用保持器(請求項５)は、円環状に形成された軸方向一対の環状部と、周方向に一定間隔をあけて前記一対の環状部の間に架設された複数の柱部とを備え、一対の環状部と周方向に隣接する柱部との間に転がり軸受の転動体を収容するポケットを備えた転がり軸受用保持器であって、前記ポケットを挟んで隣接する柱部に、当該ポケット側かつ径方向内側へ向けて突出し、当該ポケット内に収容された転動体を径方向内側から押さえる突起部が形成され、この突起部の基部に対して軸方向に隣接する前記柱部の内周面に、当該ポケット側へ向かうに従い漸次径方向外側へ傾斜する傾斜面が形成されていることを特徴とする。   The rolling bearing retainer of the present invention (Claim 5) is provided between a pair of annular portions formed in an annular shape and a pair of annular portions spaced apart in the circumferential direction. A rolling bearing retainer including a plurality of column portions, and a pocket for accommodating a rolling element of the rolling bearing between the pair of annular portions and the column portions adjacent to each other in the circumferential direction. A protruding portion that protrudes toward the pocket side and radially inward and presses the rolling element accommodated in the pocket from the radially inner side is formed in the adjacent column portion, and is axially formed with respect to the base portion of the protruding portion. An inclined surface is formed on the inner peripheral surface of the adjacent column part so as to be gradually inclined outward in the radial direction toward the pocket side.

以上の各構成によれば、柱部の外周面又は内周面には傾斜面が形成されているので、ポケット内に転動体を収容するために突起部を弾性変形させた場合に突起部の基部に局部応力が発生するのを防止することができる。また、柱部の外周面又は内周面に傾斜面を形成するだけであるので、突起部の剛性低下は僅かであり、高速回転にも対応可能となる。   According to each of the above configurations, since the inclined surface is formed on the outer peripheral surface or the inner peripheral surface of the pillar portion, when the protrusion portion is elastically deformed to accommodate the rolling element in the pocket, the protrusion portion Generation of local stress at the base can be prevented. Moreover, since only the inclined surface is formed on the outer peripheral surface or the inner peripheral surface of the column portion, the rigidity of the projection portion is slightly reduced, and it is possible to cope with high-speed rotation.

前記傾斜面は、前記突起部の基部に対して軸方向両側に隣接する前記柱部の外周面若しくは内周面に形成されていることが好ましい（請求項２、６）。これによって突起部の基部に対する局部応力をより確実に防止することができる。   It is preferable that the inclined surface is formed on an outer peripheral surface or an inner peripheral surface of the column portion adjacent to both sides in the axial direction with respect to the base portion of the protruding portion (Claims 2 and 6). Thereby, the local stress with respect to the base part of a projection part can be prevented more reliably.

本発明の内輪組立体（請求項３）は、外周面に軌道を有するとともに、この軌道の少なくとも軸方向一方側に径方向外側に突出する鍔部を有している内輪と、前記内輪の径方向外側に配置される請求項１又は２に記載の保持器と、前記保持器のポケット内に収容され、かつ前記内輪の軌道上を転動可能に配置される複数の転動体と、を備えていることを特徴とする。   An inner ring assembly according to the present invention (Claim 3) has an inner ring having a raceway on the outer peripheral surface and a flange projecting radially outward on at least one axial side of the raceway, and a diameter of the inner ring. The cage according to claim 1 or 2, which is disposed on the outer side in the direction, and a plurality of rolling elements housed in a pocket of the cage and arranged to roll on a track of the inner ring. It is characterized by.

また、本発明の外輪組立体（請求項７）は、内周面に軌道を有するとともに、この軌道の少なくとも軸方向一方側に径方向内方へ突出する鍔部を有している外輪と、前記外輪の径方向内側に配置される請求項５又は６に記載の保持器と、前記保持器のポケット内に収容され、かつ前記外輪の軌道上を転動可能に配置される複数の転動体と、を備えていることを特徴とする。   An outer ring assembly according to the present invention (Claim 7) has a track on the inner peripheral surface, and an outer ring having a flange projecting radially inward on at least one axial side of the track; The cage according to claim 5 or 6, which is arranged on the radially inner side of the outer ring, and a plurality of rolling elements which are accommodated in a pocket of the cage and arranged to roll on a track of the outer ring. And.

また、本発明の転がり軸受（請求項４）は、内周面に軌道を有する外輪と、外周面に軌道を有するとともに、この軌道の少なくとも軸方向一方側に径方向外側へ突出する鍔部を有している内輪と、前記外輪と前記内輪との径方向間に配置される請求項１又は２に記載の保持器と、前記保持器のポケット内に収容され、かつ前記外輪および前記内輪の前記軌道上を転動可能に配置される複数の転動体と、を備えていることを特徴とする。   Further, the rolling bearing of the present invention (Claim 4) has an outer ring having a raceway on the inner peripheral surface, a raceway on the outer peripheral surface, and a flange portion projecting radially outward on at least one axial side of the raceway. The retainer according to claim 1 or 2, which is disposed between the inner ring and the outer ring and the inner ring in a radial direction, and is accommodated in a pocket of the retainer, and the outer ring and the inner ring And a plurality of rolling elements arranged so as to be able to roll on the track.

また、本発明の転がり軸受（請求項８）は、外周面に軌道を有する内輪と、内周面に軌道を有するとともに、この軌道の少なくとも軸方向一方側に径方向内方へ突出する鍔部を有している外輪と、前記外輪と前記内輪との径方向間に配置される請求項５又は６に記載の保持器と、前記保持器のポケット内に収容され、かつ前記外輪および前記内輪の軌道上を転動可能に配置される複数の転動体と、を備えていることを特徴とする。   Further, the rolling bearing of the present invention (Claim 8) has an inner ring having a raceway on the outer peripheral surface, and a flange portion having a raceway on the inner peripheral surface and projecting radially inward on at least one axial side of the raceway. And a retainer according to claim 5 or 6, which is disposed between the outer ring and the inner ring in a radial direction, and is accommodated in a pocket of the retainer, and the outer ring and the inner ring. And a plurality of rolling elements arranged so as to be able to roll on the track.

以上の内輪組立体、外輪組立体、および転がり軸受によれば、上述した保持器と同様の作用効果を奏する。   According to the above inner ring assembly, outer ring assembly, and rolling bearing, the same effects as the above-described cage can be obtained.

本発明によれば、突起部の剛性をそれほど低下させずに円筒ころの組付けを容易にし、突起部の基部における局部応力の発生を防止することができる。   According to the present invention, it is possible to facilitate the assembly of the cylindrical roller without significantly reducing the rigidity of the protrusion, and to prevent the generation of local stress at the base of the protrusion.

本発明の実施形態に係る転がり軸受の断面図である。It is sectional drawing of the rolling bearing which concerns on embodiment of this invention. 保持器を外周側から見た平面図である。It is the top view which looked at the holder | retainer from the outer peripheral side. 図２のIII−III断面図である。FIG. 3 is a sectional view taken along line III-III in FIG. 2. 図２のIV−IV断面図である。It is IV-IV sectional drawing of FIG. 図４のＶ部拡大詳細図である。It is the V section enlarged detail drawing of FIG. 従来技術に係る転がり軸受用保持器の断面図である。It is sectional drawing of the cage for rolling bearings based on a prior art.

以下、本発明の実施形態を図面を参照して説明する。
図１は、本発明の実施形態に係る転がり軸受１０の断面図である。この転がり軸受１０は、環状の外輪１１と、外輪１１の内周側に同心状に配置された内輪１２と、外輪１１と内輪１２との間に配置された転動体としての複数の円筒ころ１３と、これら円筒ころ１３を周方向に所定間隔で保持するための保持器１４とを備えている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view of a rolling bearing 10 according to an embodiment of the present invention. The rolling bearing 10 includes an annular outer ring 11, an inner ring 12 concentrically disposed on the inner peripheral side of the outer ring 11, and a plurality of cylindrical rollers 13 as rolling elements disposed between the outer ring 11 and the inner ring 12. And a retainer 14 for retaining the cylindrical rollers 13 at predetermined intervals in the circumferential direction.

外輪１１は、軸受鋼等の合金鋼を用いて環状に形成された部材であり、その内周には、円筒ころ１３が転動する外輪軌道１６が周方向に沿って形成されている。
内輪１２も、軸受鋼等の合金鋼を用いて環状に形成された部材であり、その外周には、円筒ころ１３が転動する内輪軌道１７が外輪軌道１６に対向するように形成されている。また、内輪１２の外周には、内輪軌道１７の軸方向両側において径方向外方に突出する内輪鍔部１８が形成され、この内輪鍔部１８によって内輪１２に対する円筒ころ１３の軸方向の移動が規制されている。 The outer ring 11 is a member formed in an annular shape using alloy steel such as bearing steel, and an outer ring raceway 16 on which the cylindrical roller 13 rolls is formed along the circumferential direction on the inner periphery thereof.
The inner ring 12 is also a member formed in an annular shape using alloy steel such as bearing steel, and an inner ring raceway 17 on which the cylindrical roller 13 rolls is formed on the outer periphery thereof so as to face the outer ring raceway 16. . Further, on the outer periphery of the inner ring 12, an inner ring collar portion 18 that protrudes radially outward is formed on both axial sides of the inner ring raceway 17. It is regulated.

なお、外輪１１には鍔部は形成されておらず、外輪軌道１６上における円筒ころ１３の軸方向の移動が許容されている。
複数の円筒ころ１３は、外輪軌道１６及び内輪軌道１７上を転動可能であり、これによって、外輪１１及び内輪１２が相対回転自在とされている。 The outer ring 11 is not formed with a flange portion, and the axial movement of the cylindrical roller 13 on the outer ring raceway 16 is allowed.
The plurality of cylindrical rollers 13 can roll on the outer ring raceway 16 and the inner ring raceway 17, whereby the outer ring 11 and the inner ring 12 are relatively rotatable.

図２は、保持器１４を外周側から見た平面図、図３は、図２のIII−III断面図、図４は図２のIV−IV断面図である。保持器１４は、ポリエーテルエーテルケトン（ＰＥＥＫ）樹脂等の合成樹脂を用いて形成されている。保持器１４は、円環状に形成された軸方向一対の環状部２１と、この一対の環状部２１間に架設された周方向に複数の柱部２２とを備えている。複数の柱部２２は周方向に一定の間隔をあけて配置され、周方向に隣接する柱部２２と一対の環状部２１との間に形成された略四角形状の空間が、円筒ころ１３を収容可能なポケット２３とされている。保持器１４は、外輪１１と内輪１２との間に、これら両輪とほぼ同心となるように配置されている。なお、保持器１４は、ポリアミド樹脂を用いて形成してもよい。   2 is a plan view of the cage 14 as viewed from the outer periphery side, FIG. 3 is a sectional view taken along line III-III in FIG. 2, and FIG. 4 is a sectional view taken along line IV-IV in FIG. The cage 14 is formed using a synthetic resin such as polyetheretherketone (PEEK) resin. The cage 14 includes a pair of annular portions 21 formed in an annular shape in the annular direction and a plurality of column portions 22 extending in a circumferential direction between the pair of annular portions 21. The plurality of column portions 22 are arranged at a certain interval in the circumferential direction, and a substantially rectangular space formed between the column portions 22 adjacent to the circumferential direction and the pair of annular portions 21 is formed by the cylindrical rollers 13. The pocket 23 can be accommodated. The cage 14 is disposed between the outer ring 11 and the inner ring 12 so as to be substantially concentric with these two rings. In addition, you may form the holder | retainer 14 using a polyamide resin.

一対の環状部２１の軸方向内側面（ポケット２３に面する側面）には、ポケット２３内へ向けて膨出し、その先端面が円筒ころ１３の軸方向端面に摺接可能な軸方向案内部２５が形成されている。この軸方向案内部２５は、ポケット２３内における円筒ころ１３の軸方向の位置を規制している。
柱部２２の外周面の周方向中央には、径方向内側へ凹む凹部２６が柱部２２の軸方向全体に亘って形成されている。 An axial guide portion that bulges into the pocket 23 on the axially inner side surfaces (side surfaces facing the pocket 23) of the pair of annular portions 21, and whose front end surface is slidable in contact with the axial end surface of the cylindrical roller 13. 25 is formed. The axial direction guide portion 25 regulates the axial position of the cylindrical roller 13 in the pocket 23.
At the center in the circumferential direction of the outer peripheral surface of the column portion 22, a recess 26 that is recessed radially inward is formed over the entire axial direction of the column portion 22.

また、柱部２２の周方向側面２２ａであって軸方向中央部には、ポケット２３内へ向けて膨出し、その先端面（第１案内面２８）が円筒ころ１３の外周面に摺接可能な周方向案内部２９が形成されている。第１案内面２８はほぼ平坦面に形成され、円筒ころ１３の保持器周方向の位置を規制している。
柱部２２の外周面の周方向両側であって軸方向中央部には、ポケット２３側かつ径方向外側に向けて突出する突起部３０が形成されている。ポケット２３を挟んだ両側の突起部３０の先端部間隔Ｗ（図４参照）は、円筒ころ１３の直径よりも小さく形成されている。 Further, in the circumferential side surface 22a of the column portion 22 and in the axial center portion, it bulges into the pocket 23, and its front end surface (first guide surface 28) can slide on the outer peripheral surface of the cylindrical roller 13. A circumferential guide 29 is formed. The first guide surface 28 is formed in a substantially flat surface and regulates the position of the cylindrical roller 13 in the circumferential direction of the cage.
Protrusions 30 projecting toward the pocket 23 side and radially outward are formed on both sides in the circumferential direction of the outer peripheral surface of the column portion 22 and in the central portion in the axial direction. The distance W (see FIG. 4) between the tip portions of the projections 30 on both sides of the pocket 23 is formed smaller than the diameter of the cylindrical roller 13.

図５は図４のＶ部拡大図である。突起部３０のポケット２３側の側面は、周方向案内部２９の第１案内面２８に滑らかに連なり、凹円弧状に湾曲するように形成された第２案内面３２とされている。この第２案内面３２の曲率半径は、円筒ころ１３の外周面の曲率半径よりも僅かに大きくなるように設定されている。この第２案内面３２に円筒ころ１３の外周面が接触することによって、円筒ころ１３が案内されるとともに、円筒ころ軸受１０の組立時にポケット２３からの円筒ころ１３の径方向外側への抜けが防止される。   FIG. 5 is an enlarged view of a portion V in FIG. A side surface of the protrusion 30 on the pocket 23 side is a second guide surface 32 that is smoothly connected to the first guide surface 28 of the circumferential guide portion 29 and is curved in a concave arc shape. The radius of curvature of the second guide surface 32 is set to be slightly larger than the radius of curvature of the outer peripheral surface of the cylindrical roller 13. When the outer peripheral surface of the cylindrical roller 13 comes into contact with the second guide surface 32, the cylindrical roller 13 is guided, and the cylindrical roller 13 is released from the pocket 23 to the outside in the radial direction when the cylindrical roller bearing 10 is assembled. Is prevented.

すなわち、本実施形態では、内輪１２の外周側に保持器１４を配置した状態で、ポケット２３の周方向両側の突起部３０を押し広げながら当該ポケット２３内に円筒ころ１３を嵌め入れていくことによって中間段階としての「内輪組立体」が組み立てられ、この内輪組立体の外周部に外輪１１を嵌合することによって円筒ころ軸受１０が組み立てられるようになっており、突起部３０は、内輪組立体における円筒ころ１３がポケット２３から径方向外側に離脱するのを防止する機能を具備している。   That is, in the present embodiment, the cylindrical roller 13 is fitted into the pocket 23 while the protrusions 30 on both sides in the circumferential direction of the pocket 23 are expanded while the cage 14 is disposed on the outer peripheral side of the inner ring 12. Thus, an “inner ring assembly” as an intermediate stage is assembled, and the cylindrical roller bearing 10 is assembled by fitting the outer ring 11 to the outer peripheral portion of the inner ring assembly. The cylindrical roller 13 has a function of preventing the three-dimensional cylindrical roller 13 from being detached from the pocket 23 radially outward.

なお、突起部３０のポケット２３側の側面において、第２案内面３２よりも径方向外側には、当該第２案内面３２に滑らかに連続するように凸円弧状に湾曲する円弧面３４が形成されている。このような円弧面３４を形成することによって、内輪組立体を組み立てる際、ポケット２３に対して径方向外側から円筒ころ１３を押し込むときにポケット２３の両側の突起部３０を周方向外側へ拡げ易くなっている。   On the side surface of the protrusion 30 on the pocket 23 side, an arc surface 34 that is curved in a convex arc shape so as to be smoothly continuous with the second guide surface 32 is formed on the radially outer side of the second guide surface 32. Has been. By forming such an arc surface 34, when assembling the inner ring assembly, the protrusions 30 on both sides of the pocket 23 can be easily expanded outward in the circumferential direction when the cylindrical roller 13 is pushed into the pocket 23 from the radially outer side. It has become.

図５に示すように、突起部３０の軸方向両側に配置されている柱部２２の外周面、すなわち、凹部２６とポケット２３との周方向間に配置されている柱部２２の外周面は、凹部２６側の第１の外周面３５と、ポケット２３側の第２の外周面３６とから構成されている。第１の外周面３５は、保持器１４の外周面（環状部２１の外周面）とほぼ同一の曲率中心の円弧面、または当該外周面にほぼ平行な平坦面に形成されている。これに対して第２の外周面３６は、ポケット２３側へ向かうに従って径方向内側に傾斜する傾斜面とされている。第１の外周面３５と第２の外周面３６との周方向の寸法比Ｌ１：Ｌ２は、約１：２とされている。   As shown in FIG. 5, the outer peripheral surface of the column portion 22 disposed on both sides in the axial direction of the projection portion 30, that is, the outer peripheral surface of the column portion 22 disposed between the concave portion 26 and the pocket 23 is The first outer peripheral surface 35 on the concave portion 26 side and the second outer peripheral surface 36 on the pocket 23 side are configured. The first outer peripheral surface 35 is formed as an arc surface having the same center of curvature as the outer peripheral surface of the retainer 14 (the outer peripheral surface of the annular portion 21) or a flat surface substantially parallel to the outer peripheral surface. On the other hand, the 2nd outer peripheral surface 36 is made into the inclined surface which inclines in radial direction as it goes to the pocket 23 side. The circumferential dimension ratio L1: L2 between the first outer peripheral surface 35 and the second outer peripheral surface 36 is about 1: 2.

図５には、比較例として従来の柱部２２の外形線を２点差線（符号５０）で示している。この従来の柱部２２の外周面には、第２の外周面３６のような傾斜面は形成されておらず、第１の外周面３５をそのままポケット２３側へ延長した形状となっている。この従来の場合、ポケット２３に対して円筒ころ１３を径方向外側から押し込み、突起部３０を周方向外側（矢印Ｘ）に弾性変形させると、突起部３０の基部、特に外周面５０と柱部２２の側面２２ａとの角部Ｐ付近において局部応力が発生し、損傷し易くなる。   In FIG. 5, the outline of the conventional column 22 is shown as a two-point difference line (reference numeral 50) as a comparative example. An inclined surface like the second outer peripheral surface 36 is not formed on the outer peripheral surface of the conventional column portion 22, and the first outer peripheral surface 35 is extended to the pocket 23 side as it is. In this conventional case, when the cylindrical roller 13 is pushed into the pocket 23 from the outside in the radial direction and the protrusion 30 is elastically deformed outward in the circumferential direction (arrow X), the base of the protrusion 30, particularly the outer peripheral surface 50 and the column portion. A local stress is generated in the vicinity of the corner portion P with the side surface 22a of the 22 so that it is easily damaged.

これに対して、本実施の形態では、柱部２２に傾斜面からなる第２の外周面３６が形成されているので、周方向外側（矢印Ｘ）への負荷が作用する突起部３０の先端部から応力の発生し易い箇所（符号Ｐ１，Ｐ２で示す）までの距離が長くなり、さらに、この応力の発生しやすい箇所Ｐ１，Ｐ２が複数箇所に分散されるとともに、各箇所の角度θ１，θ２（柱部２２の側面２２ａと第２の外周面３６とがなす角度θ１、および第２の外周面３６と第１の外周面３５とがなす角度θ２）が９０°より大きい鈍角となる。これらによって、突起部３０を弾性変形させた場合に突起部３０の基部付近に発生する応力を分散し、局部応力の発生を防止することが可能である。   On the other hand, in the present embodiment, since the second outer peripheral surface 36 made of an inclined surface is formed on the column portion 22, the tip of the projection portion 30 on which a load on the outer side in the circumferential direction (arrow X) acts. The distance from the portion to the location where the stress is likely to occur (indicated by reference numerals P1 and P2) is increased, and the locations P1 and P2 where the stress is likely to be generated are dispersed at a plurality of locations, and the angles θ1, θ2 (the angle θ1 formed by the side surface 22a of the column 22 and the second outer peripheral surface 36, and the angle θ2 formed by the second outer peripheral surface 36 and the first outer peripheral surface 35) is an obtuse angle larger than 90 °. By these, when the protrusion 30 is elastically deformed, it is possible to disperse the stress generated in the vicinity of the base of the protrusion 30 and to prevent the generation of local stress.

また、突起部３０自体は従来と同一の形状であり、傾斜面３６が形成されることによって若干剛性は低下するものの性能上の差異は僅かであり、円筒ころ軸受１０の高速回転による突起部３０と円筒ころ１３との接触力が増大しても、十分に対応しうる剛性を維持することが可能である。   Further, the protrusion 30 itself has the same shape as the conventional one, and the difference in performance is slight although the rigidity is slightly reduced by forming the inclined surface 36, and the protrusion 30 due to the high-speed rotation of the cylindrical roller bearing 10. Even if the contact force between the cylindrical roller 13 and the cylindrical roller 13 increases, it is possible to maintain sufficient rigidity.

以上に説明した実施形態の円筒ころ軸受１０は、内輪１２の外周面に内輪鍔部１８が形成され、保持器１４の柱部２２に径方向外側に突出する突起部３０が形成され、この内輪１２と保持器１４と円筒ころ１３とによって内輪組立体が構成されるものであったが、本発明は、外輪１１の内周面に外輪鍔部が形成され、保持器１４の柱部２２にポケット２３側かつ径方向内側に突出するとともに円筒ころ１３がポケット２３から径方向内側へ抜けるのを防止する突起部３０が形成され、この外輪１１と保持器１４と円筒ころ１３とによって外輪組立体が構成される円筒ころ軸受１０にも適用することができる。また、いずれの場合においても、円筒ころ１３の軸方向の位置を規制する鍔部は、内輪１２又は外輪１１の軸方向の一方側のみに形成されていてもよく、他方には別体の鍔輪が設けられていてもよい。   In the cylindrical roller bearing 10 according to the embodiment described above, the inner ring flange 18 is formed on the outer peripheral surface of the inner ring 12, and the protruding part 30 protruding radially outward is formed on the column part 22 of the cage 14. 12, the retainer 14, and the cylindrical roller 13 constitute an inner ring assembly. However, in the present invention, an outer ring collar portion is formed on the inner peripheral surface of the outer ring 11, and the pillar portion 22 of the retainer 14 is A protrusion 30 is formed which protrudes toward the pocket 23 and radially inward and prevents the cylindrical roller 13 from escaping radially inward from the pocket 23. The outer ring assembly, the retainer 14 and the cylindrical roller 13 form the outer ring assembly. It is applicable also to the cylindrical roller bearing 10 comprised by these. In any case, the flange that regulates the axial position of the cylindrical roller 13 may be formed only on one side of the inner ring 12 or the outer ring 11 in the axial direction, and the other is a separate flange. A ring may be provided.

柱部２２の外周面には、第１の外周面３５と第２の外周面３６（傾斜面）が形成されているが、第１の外周面３５を省略し、この第１の外周面３５に相当する寸法Ｌ１だけ第２の外周面３６を延長してもよい。また、第２の外周面３６は、平坦な傾斜面であっても良いし、凸状又は凹状の円弧状に湾曲した傾斜面であってもよい。この第２の外周面３６は、突起部３０の軸方向片側のみに形成されていてもよい。   A first outer peripheral surface 35 and a second outer peripheral surface 36 (inclined surface) are formed on the outer peripheral surface of the column portion 22, but the first outer peripheral surface 35 is omitted and the first outer peripheral surface 35 is omitted. The second outer peripheral surface 36 may be extended by a dimension L1 corresponding to. Further, the second outer peripheral surface 36 may be a flat inclined surface, or may be an inclined surface curved in a convex or concave arc shape. The second outer peripheral surface 36 may be formed only on one side of the protrusion 30 in the axial direction.

１０：転がり軸受、１１：外輪、１２：内輪、１３：円筒ころ（転動体）、１４：保持器、１６：外輪軌道、１７：内輪軌道、１８：内輪鍔部、２１：環状部、２２：柱部、２３：ポケット、３０：突起部、３２：第２案内面、３６：第２の外周面（傾斜面）   DESCRIPTION OF SYMBOLS 10: Rolling bearing, 11: Outer ring, 12: Inner ring, 13: Cylindrical roller (rolling element), 14: Cage, 16: Outer ring raceway, 17: Inner ring raceway, 18: Inner ring collar part, 21: Ring part, 22: Column part, 23: Pocket, 30: Protrusion part, 32: 2nd guide surface, 36: 2nd outer peripheral surface (inclined surface)

Claims (8)

円環状に形成された軸方向一対の環状部と、周方向に一定間隔をあけて前記一対の環状部の間に架設された複数の柱部とを備え、一対の環状部と周方向に隣接する柱部との間に転がり軸受の転動体を収容するポケットを備えた転がり軸受用保持器であって、
前記ポケットを挟んで隣接する柱部に、当該ポケット側かつ径方向外側に突出し、当該ポケット内に収容された転動体を径方向外側から押さえる突起部が形成され、この突起部の基部に対して軸方向に隣接する前記柱部の外周面に、当該ポケット側へ向かうに従い漸次径方向内側へ傾斜する傾斜面が形成されていることを特徴とする転がり軸受用保持器。 A pair of annular portions formed in an annular shape and a plurality of pillars laid between the pair of annular portions at a predetermined interval in the circumferential direction, and adjacent to the pair of annular portions in the circumferential direction A rolling bearing retainer having a pocket for accommodating a rolling element of the rolling bearing between the pillar portion and
Protruding portions that protrude from the pocket side and radially outward and press the rolling elements accommodated in the pocket from the radially outer side are formed on the column portions adjacent to each other with the pocket interposed therebetween. A rolling bearing retainer characterized in that an inclined surface that is gradually inclined inward in the radial direction toward the pocket side is formed on an outer peripheral surface of the column portion adjacent in the axial direction. 前記傾斜面が、前記突起部の基部に対して軸方向両側に隣接する前記柱部の外周面に形成されている請求項１に記載の転がり軸受用保持器。   The rolling bearing retainer according to claim 1, wherein the inclined surface is formed on an outer peripheral surface of the column portion adjacent to both sides in the axial direction with respect to a base portion of the protrusion portion. 外周面に軌道を有するとともに、この軌道の少なくとも軸方向一方側に径方向外側に突出する鍔部を有している内輪と、
前記内輪の径方向外側に配置される請求項１又は２に記載の保持器と、
前記保持器のポケット内に収容され、かつ前記内輪の軌道上を転動可能に配置される複数の転動体と、
を備えていることを特徴とする内輪組立体。 An inner ring having a track on the outer peripheral surface, and having a flange projecting radially outward on at least one axial side of the track;
The cage according to claim 1 or 2, which is disposed on a radially outer side of the inner ring,
A plurality of rolling elements housed in a pocket of the cage and arranged to roll on the race of the inner ring;
An inner ring assembly comprising: 内周面に軌道を有する外輪と、
外周面に軌道を有するとともに、この軌道の少なくとも軸方向一方側に径方向外側へ突出する鍔部を有している内輪と、
前記外輪と前記内輪との径方向間に配置される請求項１又は２に記載の保持器と、
前記保持器のポケット内に収容され、かつ前記外輪および前記内輪の前記軌道上を転動可能に配置される複数の転動体と、
を備えていることを特徴とする転がり軸受。 An outer ring having a track on the inner peripheral surface;
An inner ring having a track on the outer peripheral surface, and having a flange projecting radially outward on at least one axial side of the track;
The cage according to claim 1 or 2, which is disposed between the outer ring and the inner ring in a radial direction,
A plurality of rolling elements housed in a pocket of the cage and arranged to roll on the raceway of the outer ring and the inner ring;
A rolling bearing characterized by comprising: 円環状に形成された軸方向一対の環状部と、周方向に一定間隔をあけて前記一対の環状部の間に架設された複数の柱部とを備え、一対の環状部と周方向に隣接する柱部との間に転がり軸受の転動体を収容するポケットを備えた転がり軸受用保持器であって、
前記ポケットを挟んで隣接する柱部に、当該ポケット側かつ径方向内側へ向けて突出し、当該ポケット内に収容された転動体を径方向内側から押さえる突起部が形成され、この突起部の基部に対して軸方向に隣接する前記柱部の内周面に、当該ポケット側へ向かうに従い漸次径方向外側へ傾斜する傾斜面が形成されていることを特徴とする転がり軸受用保持器。 A pair of annular portions formed in an annular shape and a plurality of pillars laid between the pair of annular portions at a predetermined interval in the circumferential direction, and adjacent to the pair of annular portions in the circumferential direction A rolling bearing retainer having a pocket for accommodating a rolling element of the rolling bearing between the pillar portion and
A protruding portion that protrudes toward the pocket side and radially inward from the adjacent column portion across the pocket and presses the rolling elements housed in the pocket from the radially inner side is formed at the base of the protruding portion. On the other hand, the rolling bearing retainer is characterized in that an inclined surface is formed on the inner peripheral surface of the column portion adjacent in the axial direction so as to be gradually inclined outward in the radial direction toward the pocket side. 前記傾斜面が、前記突起部の基部に対して軸方向両側に隣接する前記柱部の内周面に形成されている請求項５に記載の転がり軸受用保持器。   The rolling bearing retainer according to claim 5, wherein the inclined surface is formed on an inner peripheral surface of the column portion adjacent to both sides in the axial direction with respect to a base portion of the protruding portion. 内周面に軌道を有するとともに、この軌道の少なくとも軸方向一方側に径方向内方へ突出する鍔部を有している外輪と、
前記外輪の径方向内側に配置される請求項５又は６に記載の保持器と、
前記保持器のポケット内に収容され、かつ前記外輪の軌道上を転動可能に配置される複数の転動体と、
を備えていることを特徴とする外輪組立体。 An outer ring having a track on the inner peripheral surface and having a flange projecting radially inward on at least one axial side of the track;
The cage according to claim 5 or 6, which is disposed on the radially inner side of the outer ring,
A plurality of rolling elements housed in a pocket of the cage and arranged to roll on the raceway of the outer ring;
An outer ring assembly comprising: 外周面に軌道を有する内輪と、
内周面に軌道を有するとともに、この軌道の少なくとも軸方向一方側に径方向内方へ突出する鍔部を有している外輪と、
前記外輪と前記内輪との径方向間に配置される請求項５又は６に記載の保持器と、
前記保持器のポケット内に収容され、かつ前記外輪および前記内輪の軌道上を転動可能に配置される複数の転動体と、
を備えていることを特徴とする転がり軸受。 An inner ring having a track on the outer peripheral surface;
An outer ring having a track on the inner peripheral surface and having a flange projecting radially inward on at least one axial side of the track;
The cage according to claim 5 or 6 disposed between the outer ring and the inner ring in a radial direction,
A plurality of rolling elements housed in a pocket of the cage and arranged to roll on the races of the outer ring and the inner ring;
A rolling bearing characterized by comprising:
JP2009092251A 2009-04-06 2009-04-06 Roller bearing cage, inner ring assembly, outer ring assembly and rolling bearing provided with the cage Expired - Fee Related JP5218231B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2009092251A JP5218231B2 (en) 2009-04-06 2009-04-06 Roller bearing cage, inner ring assembly, outer ring assembly and rolling bearing provided with the cage
US12/753,999 US8591121B2 (en) 2009-04-06 2010-04-05 Rolling bearing cage and assembly
EP10159126A EP2239473B1 (en) 2009-04-06 2010-04-06 Rolling bearing cage
KR1020100031322A KR101576072B1 (en) 2009-04-06 2010-04-06 Rolling bearing retainer, inner ring assembly, outer ring assembly, and rolling bearing that are provided with rolling bearing retainer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009092251A JP5218231B2 (en) 2009-04-06 2009-04-06 Roller bearing cage, inner ring assembly, outer ring assembly and rolling bearing provided with the cage

Publications (2)

Publication Number Publication Date
JP2010242860A JP2010242860A (en) 2010-10-28
JP5218231B2 true JP5218231B2 (en) 2013-06-26

Family

ID=43096069

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009092251A Expired - Fee Related JP5218231B2 (en) 2009-04-06 2009-04-06 Roller bearing cage, inner ring assembly, outer ring assembly and rolling bearing provided with the cage

Country Status (1)

Country Link
JP (1) JP5218231B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114263679A (en) * 2022-01-26 2022-04-01 瓦房店轴承集团国家轴承工程技术研究中心有限公司 Cylindrical roller bearing retainer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1085592B (en) * 1976-08-18 1985-05-28 Skf Kugellagerfabriken Gmbh CAGE IN SYNTHETIC MATERIAL FOR CYLINDRICAL ROLLER BEARINGS
JP3261813B2 (en) * 1993-06-28 2002-03-04 日本精工株式会社 Cage for rolling bearing
JP3651813B2 (en) * 1995-09-12 2005-05-25 光洋精工株式会社 Synthetic resin cage for roller bearings
JP2005069282A (en) * 2003-08-20 2005-03-17 Ntn Corp Cylindrical roller bearing

Also Published As

Publication number Publication date
JP2010242860A (en) 2010-10-28

Similar Documents

Publication Publication Date Title
JP3039087B2 (en) Spherical roller bearing with cage
WO2013051696A1 (en) Rolling bearing
JP2012017770A (en) Self-aligning roller bearing
JP5531551B2 (en) Roller bearing cage, inner ring assembly, outer ring assembly and rolling bearing provided with the cage
JP2013015200A (en) Conical roller bearing
JP2007177837A (en) Cage for roller bearing and roller bearing
JP5228654B2 (en) Tapered roller bearing cage and tapered roller bearing
JP2008291921A (en) Resin retainer for tapered roller bearing, and tapered roller bearing
JP2007247815A (en) Split cage for roller bearing and split type roller bearing
JP2013174283A (en) Solid-type needle roller bearing
JP2011094716A (en) Thrust roller bearing
JP2008267400A (en) Ball bearing
JP5218231B2 (en) Roller bearing cage, inner ring assembly, outer ring assembly and rolling bearing provided with the cage
JP5532157B2 (en) Tapered roller bearing cage and tapered roller bearing
JP2020070857A (en) Slewing bearing
JP2009019701A (en) Split type needle roller bearing
JP2017078480A (en) Self-aligning roller bearing
JP2006144921A (en) Rolling bearing
JP2008261458A (en) Tapered roller bearing
JP2007170470A (en) Retainer made of synthetic resin for angular ball bearing, and angular ball bearing
JP2006200672A (en) Thrust roller bearing
JP6337482B2 (en) Spherical roller bearing
JP2013015201A (en) Conical bearing
JP2007205535A (en) Cage for rolling bearing, and rolling bearing
JP2009210078A (en) Self-aligning roller bearing

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20120321

TRDD Decision of grant or rejection written
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20130131

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20130205

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20130218

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20160315

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 5218231

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees