JPH03144110A - Double row automatic aligning roller bearing - Google Patents
Double row automatic aligning roller bearingInfo
- Publication number
- JPH03144110A JPH03144110A JP1250466A JP25046689A JPH03144110A JP H03144110 A JPH03144110 A JP H03144110A JP 1250466 A JP1250466 A JP 1250466A JP 25046689 A JP25046689 A JP 25046689A JP H03144110 A JPH03144110 A JP H03144110A
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- column
- spherical
- cage
- double
- 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.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 7
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 4
- 239000000057 synthetic resin Substances 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 6
- 239000000314 lubricant Substances 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
- F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
- F16C33/4635—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window cages
-
- 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
- F16C19/38—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 two or more rows 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
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/06—Ball or roller bearings
- F16C23/08—Ball or roller bearings self-adjusting
- F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
- F16C23/086—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface forming a track for rolling elements
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は保持器の柱の側面が球面ころと面接触し、保
持器と球面ころとの接触面圧が低い複列自動調心ころ軸
受に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a double-row self-aligning roller bearing in which the side surfaces of the pillars of the cage are in surface contact with the spherical rollers, and the contact surface pressure between the cage and the spherical rollers is low.
従来の複列自動調心ころ軸受は第１図ないし第３図に示
すように、外輪１と内輪２との間に金属製の一対の保持
器３を配設し、この保持器３は軸受内側の環状部４と軸
受外側の環状部５とが柱６によって連結されて一体とな
っており、ｉｔｆ記保持器３のポケット１１に球面ころ
１２を配設し、前記ポケット１１を形成する柱の側面１
３は、軸受の軸心と球面ころの軸心１４とを含む平面１
５に対して直角な平面であって球面ころの軸心１４を含
んでいる平面１６より軸受内側に、球面ころの転動面１
７に則した曲率の円弧を軸方向および半径方向に有する
凹曲面１８を有し、また柱の側面１３は、軸受の細心と
球面ころの軸心１４とを含む平面１５に対して直角な平
面であって球面ころの軸心１４を含んでいる平面１６よ
り軸受外側に、半円筒状の円筒面１９を有している。As shown in FIGS. 1 to 3, a conventional double-row self-aligning roller bearing has a pair of metal cages 3 disposed between an outer ring 1 and an inner ring 2, and this cage 3 The inner annular part 4 and the outer annular part 5 of the bearing are connected by a pillar 6 and are integrated, and spherical rollers 12 are arranged in the pocket 11 of the retainer 3, and the pillar forming the pocket 11 side 1
3 is a plane 1 including the axis of the bearing and the axis 14 of the spherical roller;
The rolling surface 1 of the spherical roller is located on the inner side of the bearing from the plane 16 which is perpendicular to the plane 5 and includes the axis 14 of the spherical roller.
The column has a concave curved surface 18 having an arc of curvature in the axial and radial directions, and the side surface 13 of the column is a plane perpendicular to the plane 15 containing the fine center of the bearing and the axis 14 of the spherical roller. A semi-cylindrical cylindrical surface 19 is provided on the outer side of the bearing from a plane 16 that includes the axis 14 of the spherical rollers.
従って、円筒面１９は球面ころ１２と面接触ではなく線
接触するので球面ころ１２にスキューが生しやすく、ま
た柱の側面１３と球面ころ１２との接触面積が少なく、
柱の側面１３と球面ころ１２との接触面圧が商いので柱
６の摩耗が多い。また、柱の外周面２１と隣りの柱の外
周面２１との間隔Ａは球面ころ１２のす・１応する個所
の直径より大きいので柱の外周面２】の円周方向の中寸
法が短かく、柱６の剛性が弱い。さらに、ポケット１１
内に配設した球面ころ１２は軸受の組立時に円筒面１９
を通ってボケｚト１１内から脱落するので軸受の組立が
困難であり、また軸受の組立の自動化が困難である。Therefore, the cylindrical surface 19 makes line contact with the spherical roller 12 rather than surface contact, which tends to cause skew in the spherical roller 12, and the contact area between the side surface 13 of the column and the spherical roller 12 is small.
Since the contact surface pressure between the side surface 13 of the column and the spherical roller 12 is the same, the column 6 is often worn. Also, since the distance A between the outer circumferential surface 21 of one column and the outer circumferential surface 21 of the adjacent column is larger than the diameter of the corresponding part of the spherical roller 12, the middle dimension in the circumferential direction of the outer circumferential surface 2 of the column is short. Therefore, the rigidity of the pillar 6 is weak. Furthermore, pocket 11
The spherical rollers 12 arranged inside the cylindrical surface 19 when assembling the bearing.
Since it passes through and falls out from inside the socket 11, it is difficult to assemble the bearing, and it is also difficult to automate the assembly of the bearing.
この発明は保持器の摩耗が少なく、柱の剛性が強く、か
つ軸受の組立が容易な複列自動調心ころ軸受を提供する
ことを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a double-row self-aligning roller bearing in which the retainer has less wear, the pillars have strong rigidity, and the bearing is easy to assemble.
犬にこの発明の実施例を図面に基いて説明する。An embodiment of the present invention will be explained to a dog based on the drawings.
ｔｊＳ４図ないし１５６図において、外輪３１は球面の
外輪軌道３２を有し、また内輪３３は内輪軌道３４を二
列有している。前記外輪３１と内輪３３との１間に合或
樹廁製の一対の保持器４１を配設し、この保持器４１は
軸受内側の環状部４２と軸受外側の環状部４３とが柱４
４によって連結されて一体となっている。前記保持器４
１のポケット４５に球面ころ４７を配設し、またポケッ
ト４５を形成する柱の側面５１は柱の側面５１の軸方向
中心に対して軸方向の両側の個所が、軸受の細心と球面
ころの軸心５２とを含む平面５３に対して直角な平面で
あって球面ころの軸心５２を含んでいる平面５４より軸
受内側と軸受外側とに、球面ころの転勤１Ｉ０５５に則
した曲率の円弧を軸方向および半径方向に有する凹曲面
５７．５８をそれぞれ有している。In Figures tjS4 to 156, the outer ring 31 has a spherical outer ring raceway 32, and the inner ring 33 has two rows of inner ring raceways 34. A pair of cages 41 made of wood are disposed between the outer ring 31 and the inner ring 33, and the cage 41 has an annular portion 42 on the inside of the bearing and an annular portion 43 on the outside of the bearing.
4 and are connected as one body. The retainer 4
A spherical roller 47 is disposed in the pocket 45 of the column 1, and the side surface 51 of the column forming the pocket 45 is located on both sides in the axial direction with respect to the axial center of the side surface 51 of the column. A circular arc with a curvature that conforms to the transfer 1I055 of the spherical rollers is formed on the inner side of the bearing and the outer side of the bearing from the plane 54 that is perpendicular to the plane 53 that includes the axis 52 of the spherical rollers. It has concave curved surfaces 57 and 58 in the axial and radial directions, respectively.
即ち、凹曲面５７．５８は球面ころの軸心５２を含んで
いる平面５４による断面が円弧であり、また凹曲面５７
．５８は球面ころの軸心５２と直角方向の平面による断
面が円弧である。前記柱の側面５１と球面ころ４７とは
面接触するので柱の側面５１と球面ころ４７との接触面
積が多く、柱の側面５１と球面ころ４７との接触面圧が
低いので柱４４の摩耗が少ない。That is, the concave curved surfaces 57 and 58 have a circular arc cross section taken by the plane 54 that includes the axis 52 of the spherical roller, and the concave curved surfaces 57 and 58
．． 58 has a circular arc in cross section along a plane perpendicular to the axis 52 of the spherical roller. Since the side surface 51 of the column and the spherical rollers 47 are in surface contact, the contact area between the side surface 51 of the column and the spherical rollers 47 is large, and the contact surface pressure between the side surface 51 of the column and the spherical rollers 47 is low, which reduces the wear of the column 44. Less is.
Ｍ記保持器４１は柱の外周面６１と隣りの柱の外周面６
１との間隔Ｂが球面ころ４７の対応する個所の直径より
短かい部分と柱の内周面６２と隣りの柱の内周面６２と
の間隔Ｃが球面ころ４７の対応する個所の直径より短か
い部分とをそれぞれ有する。従って、柱の外周面６１の
円周方向の中寸法および柱の内周面６２の円周方向の中
寸法はいずれも艮いので柱４４の剛性が強い。また、球
面ころ４７はポケット４５内からの脱落を防止されてい
るので軸受の組立および軸受の組立の自動化が容易であ
る。前記柱の側面５１の軸方向の中央部には半径方向の
みぞ７１が設けられ、このみぞ７１内にはグリース等の
潤滑剤が保持される。前記みぞ７１内の潤滑剤はポケッ
ト４５内へ流出するので軸受の潤滑性能が向上する。ま
た、保持器４１の加工精度および変形等により、柱の側
面５１の曲率半径が球面ころの転動面５５の曲率半径よ
り大きくなっても球面ころ４７が柱の側面５１の軸方向
の二ケ所以上に接するので柱の側面５１は異當摩耗しな
い。前記軸受外側の環状部の内周部の軸受内側の側面７
３は軸と直角な平面になっており、軸受外側の環状部の
内周部７５と球面ころ４７との１１１１のすきま７６が
軸受外側の環状部の外周部７８と球面ころ４７との間の
すきま７９より大きくなっている。従って、軸受外側の
環状部の内周部７５が保持器４１の射出成形時に軸受内
側へそっても、軸受外側の環状部の内周部７５は軸受の
作動時に球面ころ４７の端面を拘束しない。前記軸受外
側の環状部の内周部７５と球面ころ４７との間のすきま
７６にはグリース等の潤滑剤が保持され、このすきま７
６内の潤滑剤はポケット４５内へ流出するので球面ころ
４７の軸受外側の端面と球面ころの転動面５５との境の
エツジによる柚膜切れ等が防止される。前記軸受外側の
環状部４３の内周面は保持器の案内面８１となっており
、この保持器の案内面８１は内輪３３の保持器案内面に
よって案内される。前記保持器４１は合成？Ｍ ｎＷの
射出成形によって製造され、第８図に示すようにポケッ
ト内に位置する球面ころ形状の金型８２をラノアル方向
外方に抜いて製造する。この場合、Ｐｔ５６図に示すよ
うに柱の外周面と隣りの柱の外周面との開隔Ｂは球面こ
ろ４７の対応する個所の直径より短かいので札の外周面
と柱の側面との境介部８３は幾分弾性変形する。The M retainer 41 has an outer circumferential surface 61 of a column and an outer circumferential surface 6 of an adjacent column.
1 is shorter than the diameter of the corresponding portion of the spherical roller 47, and the distance C between the inner circumferential surface 62 of the column and the inner circumferential surface 62 of the adjacent column is shorter than the diameter of the corresponding portion of the spherical roller 47. each has a short portion. Therefore, the middle dimension in the circumferential direction of the outer circumferential surface 61 of the column and the middle dimension in the circumferential direction of the inner circumferential surface 62 of the column are both small, so the rigidity of the column 44 is strong. Furthermore, since the spherical rollers 47 are prevented from falling out of the pockets 45, it is easy to assemble the bearing and to automate the assembly of the bearing. A radial groove 71 is provided in the axial center of the side surface 51 of the column, and a lubricant such as grease is held within this groove 71. Since the lubricant in the groove 71 flows into the pocket 45, the lubrication performance of the bearing is improved. Furthermore, even if the radius of curvature of the side surface 51 of the column becomes larger than the radius of curvature of the rolling surface 55 of the spherical roller due to the machining accuracy and deformation of the cage 41, the spherical rollers 47 may be disposed at two locations in the axial direction of the side surface 51 of the column. Since the pillars are in contact with each other, the side surfaces 51 of the pillars do not wear out abnormally. Bearing inner side surface 7 of the inner circumference of the annular portion on the outer side of the bearing
3 is a plane perpendicular to the axis, and a clearance 76 of 1111 between the inner peripheral part 75 of the annular part outside the bearing and the spherical roller 47 is equal to the clearance 76 of 1111 between the outer peripheral part 78 of the annular part outside the bearing and the spherical roller 47. The gap is larger than 79. Therefore, even if the inner circumferential portion 75 of the annular portion on the outer side of the bearing is deflected toward the inside of the bearing during injection molding of the cage 41, the inner circumferential portion 75 of the annular portion on the outer side of the bearing does not restrain the end face of the spherical roller 47 during operation of the bearing. . A lubricant such as grease is held in a gap 76 between the inner circumference 75 of the annular portion on the outside of the bearing and the spherical rollers 47, and this gap 7
Since the lubricant in the spherical roller 6 flows into the pocket 45, breakage of the lubricant due to the boundary edge between the bearing outer end surface of the spherical roller 47 and the rolling surface 55 of the spherical roller is prevented. The inner peripheral surface of the annular portion 43 on the outer side of the bearing serves as a cage guide surface 81, and this cage guide surface 81 is guided by the cage guide surface of the inner ring 33. Is the cage 41 synthetic? It is manufactured by injection molding of MnW, and as shown in FIG. 8, it is manufactured by punching a spherical roller-shaped mold 82 located in a pocket outward in the lanoal direction. In this case, as shown in Figure Pt56, the gap B between the outer circumferential surface of the column and the outer circumferential surface of the adjacent column is shorter than the diameter of the corresponding part of the spherical roller 47, so the boundary between the outer circumferential surface of the tag and the side surface of the column is The intervening portion 83 is somewhat elastically deformed.
前記金型８２をラジア
面との間隔Ｂより小さくできる。なお、球面ころ４７を
ポケット４５内に挿入する時は柱の外周面と柱の側面と
の境介部８３が幾分弾性変形する。前記二側の内輪軌道
３４の間に浮き案内輪８６が配設され、この浮き案内輪
８６は内輪３３に嵌合している。前記の
浮き案内輪８６は内輪３３に案内され、二辱浮き案内輪
８６は球面ころ４７の軸受内側の端面と保持器４１とを
案内する。The distance between the mold 82 and the radial surface can be made smaller than the distance B. Note that when the spherical rollers 47 are inserted into the pockets 45, the interface portion 83 between the outer circumferential surface of the column and the side surface of the column is somewhat elastically deformed. A floating guide ring 86 is disposed between the inner ring raceway 34 on the two sides, and this floating guide ring 86 is fitted into the inner ring 33. The floating guide ring 86 is guided by the inner ring 33, and the double floating guide ring 86 guides the inner end surface of the bearing of the spherical roller 47 and the cage 41.
第９図はこの発明で使用する他の保持器の射出成形時に
ポケット内の金型を抜く時の説明図であるが、球面ころ
形状の金型８２を囲んで合成樹脂製の保持器４１が成形
されている。そして、柱の外周面６１と社の側面５１と
の開には段状になっている凹状のガイド部８７が設けら
れ、このガイド部８７にコ字状の押え８９を配設してい
る。前記押え８９によってガイド部８７を押えた状態で
金型８２をポケット内からラノアル方向外方へ引き抜く
。この場合、ガイド部と柱の側面との境介部９１は幾分
弾性変形するが、押え８９によってガイド部８７を押え
ているのでガイド部と柱の側面との境介部９１のブレが
少ない。また、ガイド部８７は球面ころ４７をポケット
４５内へ挿入する時に球面ころ４７を案内し、球面ころ
４７はポケット４５にスムーズに挿入される。FIG. 9 is an explanatory diagram when removing the mold in the pocket during injection molding of another cage used in the present invention, in which a synthetic resin cage 41 is surrounded by a spherical roller-shaped mold 82. Molded. A stepped concave guide portion 87 is provided between the outer circumferential surface 61 of the column and the side surface 51 of the shaft, and a U-shaped presser foot 89 is disposed on this guide portion 87. With the guide portion 87 pressed by the presser foot 89, the mold 82 is pulled out from inside the pocket toward the outer direction. In this case, the interface part 91 between the guide part and the side surface of the column is somewhat elastically deformed, but since the guide part 87 is held down by the presser foot 89, there is little wobbling of the interface part 91 between the guide part and the side surface of the column. . Further, the guide portion 87 guides the spherical roller 47 when the spherical roller 47 is inserted into the pocket 45, and the spherical roller 47 is smoothly inserted into the pocket 45.
第１０図はＶ封性能を有する他の実施例であるが、軸受
外側の環状部の外周面９２と外輪３１に設けたシール面
９３とが接触又は非接触の密封部をＷｔ或する。FIG. 10 shows another embodiment having V-sealing performance, where Wt is a sealing portion in which the outer circumferential surface 92 of the annular portion on the outside of the bearing and the sealing surface 93 provided on the outer ring 31 are in contact or non-contact.
また、保持器の案内面８１と内輪３３の保持器案内面と
は密封部を構成するので軸受内の潤滑剤は密封され、軸
受幅が長くなく、部品点数が多くなく、またコストアッ
プが少ない密封性能を有する軸受となっている。また、
軸受外径、軸受内径および幅を変えない標準タイプの国
際的互換性のある密封型自動調心ころ軸受となっている
。In addition, since the cage guide surface 81 and the cage guide surface of the inner ring 33 constitute a sealed part, the lubricant inside the bearing is sealed, the bearing width is not long, the number of parts is not large, and there is little increase in cost. The bearing has sealing performance. Also,
It is a standard type, internationally compatible sealed spherical roller bearing that does not change the bearing outer diameter, bearing inner diameter, or width.
第１１図は保持器が外輪に案内される他の実施例である
が、軸受外側の環状部４３の外周面は保持器の案内面８
１となっており、この保持器の案内面８１は外輪３１の
保持器案内面によって案内される。また、二側の球面こ
ろ４７の間に浮き案内輪８６が配設され、この浮き案内
輪８６は外輪３１に嵌合している。FIG. 11 shows another embodiment in which the cage is guided by the outer ring, and the outer peripheral surface of the annular portion 43 on the outside of the bearing is
1, and the guide surface 81 of this cage is guided by the cage guide surface of the outer ring 31. Further, a floating guide ring 86 is disposed between the spherical rollers 47 on the two sides, and this floating guide ring 86 is fitted into the outer ring 31.
前記浮き案内ｆｆ１８６は外ｆＱ！３１に案内され、こ
の浮き案内輪８６は球面ころ４７の軸受内側の端面と保
持器４１とを案内する。The floating guide ff186 is outside fQ! 31, this floating guide ring 86 guides the end surface of the spherical roller 47 inside the bearing and the cage 41.
第１２図は保持器が外輪に案内される他の実施例である
が、軸受内側の環状部４２の外周面は保持器の案内面９
２となっており、この保持器の案内面９２は外輪３１の
保持器案内面によって案内される。そして、浮き案内輪
が省かれている。FIG. 12 shows another embodiment in which the cage is guided by the outer ring, and the outer peripheral surface of the annular portion 42 inside the bearing is
2, and the guide surface 92 of this cage is guided by the cage guide surface of the outer ring 31. And the floating guide ring is omitted.
第１３図は軸方向両側の軸受外側の環状部が一体となっ
て一つの部材からＮＩｔ或されている他の実施例である
が、軸受内側の環状部４２は軸方向両側の軸受外側の環
状部４３と柱４４によってそれぞれ連結されて一体とな
っている。従って、外輪３１と内輪３３とのＩ’１１目
こは保持器４１が一個配設されている。FIG. 13 shows another embodiment in which the annular portions on the outer side of the bearing on both sides in the axial direction are integrally formed from one member, and the annular portion 42 on the inner side of the bearing is formed by the annular portions on the outer side of the bearing on both axial sides. The parts 43 and pillars 44 are connected to each other to form a single body. Therefore, one retainer 41 is disposed at the I'11th point of the outer ring 31 and the inner ring 33.
ｆｊＳ１４図は軸方向両側の軸受外側の環状部が一体と
なって一つの部材から構成されている他の実施例である
が、二側の球面ころ４７の開に配設した浮き案内輪８６
は外輪３１に嵌合している。前記浮き案内輪８６は外輪
３１に案内され、この浮き案内輪８６１シ球面ころ４７
の軸受内側の端面と保持器４１とを案ビする。Fig. fjS14 shows another embodiment in which the annular portions on the outer sides of the bearing on both sides in the axial direction are integrated and constituted of one member.
is fitted into the outer ring 31. The floating guide ring 86 is guided by the outer ring 31, and the floating guide ring 861 is guided by the spherical roller 47.
The inner end face of the bearing and the retainer 41 are shown.
ｆ５１５図は輪方向両側の軸受外側の環状部が−９とな
って一つの部材から構成されている他の実演例であるが
、軸受内側の環状部４２は内輪３３に嵌自している。従
って、内輪３３は保持器４１を案内し、浮き案内輪が省
かれている。FIG. Therefore, the inner ring 33 guides the retainer 41 and a floating guide ring is omitted.
なお、保持器４１と内輪３３との間の半径方向すさまＬ
および保持器４１と外輪３１との間の半径方向すきまＭ
を、いずれも第１６図に示す柱の側面５１と馬面ころ４
７との間の半径方向すきまＮより大きくすると、保持器
４１は軌道輪３１．３３に接しないで球瓜ころ４７に案
内され、保持器４１が熱収縮又は熱膨張等によって軌道
輪３１．３３と一体になるロック現象が防止される。Note that the radial distance L between the cage 41 and the inner ring 33 is
and the radial clearance M between the cage 41 and the outer ring 31
, the side surface 51 of the column and the horse-faced roller 4 shown in FIG.
7, the cage 41 is guided by the spherical rollers 47 without contacting the bearing rings 31.33, and the cage 41 closes to the bearing rings 31.33 due to thermal contraction or thermal expansion. This prevents the locking phenomenon that occurs when the
また、図示の実施例では柱の側面５１にみぞ７１を設け
たが、みぞ７１を設けないで柱の側面５１の全面を凹曲
面５７．５８としても良く、部分的に凹曲面５）５８と
しても良い。Further, in the illustrated embodiment, the groove 71 is provided on the side surface 51 of the column, but the groove 71 may not be provided and the entire surface of the side surface 51 of the column may be made into a concave curved surface 57, 58, or partially as a concave curved surface 5) 58. Also good.
この発明の複列自動調心ころ軸受によると、保持器４１
は合成樹ｍｙであり、ポケット４５を形成する柱の側面
５１は柱の側面５１の軸方向中心に対して軸方向の両側
の個所が、軸受の軸心と球面ころの軸心５２とを含む平
面５３に対して直角な平面であって球面ころの軸心５２
を含んでいる平面５４より軸受内側と軸受外側とに、球
面ころの転動面５５に則した曲率の円弧を軸方向および
半径方向に有する凹曲面５７．５８をそれぞれ有するの
で球面ころ４７はスキューしにくい。また、柱の側面５
１は球面ころ４７と面接触すると共に柱の側面５１と球
面ころ４７との接触面積が多く、接触面圧が小さいので
柱４４の摩耗が少ない。また、保持器４１は柱の外周面
６１と隣りの柱の外周面６１との開隔Ｂが球面ころ４７
の対応する個所の直径より短かい部分と柱の内周面６２
と隣りの柱の内周面６２との間隔Ｃが球面ころ４７の対
応する個所の直径より短かいｆｆｌｓ分とをそれぞれ有
するので柱の外周面６１および柱の内周面６２はいずれ
も円周方向の中寸法が長く、柱４４の剛性が強い。According to the double row self-aligning roller bearing of the present invention, the cage 41
is a synthetic tree my, and the side surface 51 of the column forming the pocket 45 includes the axial center of the bearing and the axial center 52 of the spherical roller at both sides in the axial direction with respect to the axial center of the side surface 51 of the column. A plane perpendicular to the plane 53 and the axis 52 of the spherical roller
The spherical rollers 47 are skewed because the spherical rollers 47 have concave curved surfaces 57 and 58 on the inside and outside of the bearing, respectively, which have arcs of curvature in the axial and radial directions that conform to the rolling surface 55 of the spherical rollers. It's hard to do. Also, the side 5 of the pillar
1 makes surface contact with the spherical rollers 47, and the contact area between the side surface 51 of the column and the spherical rollers 47 is large, and the contact surface pressure is small, so that the wear of the column 44 is small. In addition, in the cage 41, the gap B between the outer circumferential surface 61 of a column and the outer circumferential surface 61 of an adjacent column is larger than that of the spherical rollers 47.
The part shorter than the diameter of the corresponding part and the inner peripheral surface 62 of the column
and the distance C between the inner circumferential surface 62 of the adjacent column is ffls shorter than the diameter of the corresponding portion of the spherical roller 47, so the outer circumferential surface 61 of the column and the inner circumferential surface 62 of the column are both circumferential. The medium dimension in the direction is long, and the rigidity of the pillar 44 is strong.
さらに、球面ころ４７はボケ・７ト４５内からの脱落を
防止されているので軸受の組立および軸受の組立の自動
化が容易であるという効果を有する。Further, since the spherical rollers 47 are prevented from falling out from within the spherical rollers 45, it is possible to easily assemble the bearing and to automate the assembling of the bearing.
第１図は従来の複列自動調心ころ軸受の断面図第２図は
ｆ５１図に示す保持器の平面図、第３図は第２図のＸ−
Ｘ／）断面拡大図、第４図はこの発明の一実施例を示す
複列自動調心ころ軸受の断面図第５図は第４図に示す保
持器の平面図、第６図は第５図のＹ−Ｙの断面拡大図、
第７図は第５図のＺ−Ｚの断面拡大図、°第８図は第４
図に示す保持器の射出成形時にポケット内の金型を抜く
時の説明図、第９図はこの発明で使用する他の保持器の
射出成形時にボケッ、ト内の金型を抜く時の説明図、第
１０図ないし１５１５図はこの発明の他の実施例を示す
複列自動調心ころ軸受の断面図、第１６図は柱の側面と
球面ころとの間の半径方向す！！まの説明図である。
図中、３１は外輪、３２は外輪軌道、３３は内輪、３４
は内輪軌道、４１は保持器、４２は軸受内側の環状部、
４３は軸受外側の環状部、４４は柱、４５はポケット、
４７は球面ころ、５１は柱の側面、５２は球面ころの軸
心、５３は軸受の軸心と球面ころの軸心とを含む平面、
５４は球面ころの軸心を含んでいる平面、５５は球面こ
ろの転動面、５７．５８は凹曲面である。Fig. 1 is a cross-sectional view of a conventional double-row self-aligning roller bearing; Fig. 2 is a plan view of the cage shown in Fig.
X/) sectional enlarged view, FIG. 4 is a sectional view of a double-row self-aligning roller bearing showing one embodiment of the present invention, FIG. 5 is a plan view of the cage shown in FIG. 4, and FIG. Enlarged cross-sectional view of Y-Y in the figure,
Figure 7 is an enlarged cross-sectional view of Z-Z in Figure 5, and Figure 8 is the 4th section.
Fig. 9 is an explanatory diagram for removing the mold in the pocket during injection molding of the cage shown in the figure, and Fig. 9 is an explanation for removing the mold in the pocket during injection molding of another cage used in this invention. 10 to 1515 are cross-sectional views of a double-row self-aligning roller bearing showing other embodiments of the present invention, and FIG. ! FIG. In the figure, 31 is an outer ring, 32 is an outer ring raceway, 33 is an inner ring, and 34
is an inner ring raceway, 41 is a cage, 42 is an annular portion inside the bearing,
43 is an annular portion on the outside of the bearing, 44 is a column, 45 is a pocket,
47 is a spherical roller, 51 is a side surface of a column, 52 is an axis of the spherical roller, 53 is a plane containing the axis of the bearing and the axis of the spherical roller,
54 is a plane containing the axis of the spherical roller, 55 is a rolling surface of the spherical roller, and 57.58 is a concave curved surface.
Claims (6)
は内輪軌道３４を二列有し、前記外輪３１と内輪３３と
の間に保持器４１を配設し、該保持器４１は軸受内側の
環状部４２と軸受外側の環状部４３とが柱４４によって
連結されて一体となっており、前記保持器４１のポケッ
ト４５に球面ころ４７を配設した複列自動調心ころ軸受
において、前記保持器４１は合成樹脂製であり、前記ポ
ケット４５を形成する柱の側面５１は柱の側面５１の軸
方向中心に対して軸方向の両側の個所が、軸受の輪心と
球面ころの輪心５２とを含む平面５３に対して直角な平
面であって球面ころの軸心５２を含んでいる平面５４よ
り軸受内側と軸受外側とに、球面ころの転動面５５に則
した曲率の円弧を軸方向および半径方向に有する凹曲面
５７、５８をそれぞれ有し、前記保持器４１は往の外周
面６１と隣りの柱の外周面６１との間隔Ｂが球面ころ４
７の対応する箇所の直径より短かい部分と柱の内周面６
２と隣りの柱の内周面６２との間隔Ｃが球面ころ４７の
対応する箇所の直径より短かい部分とをそれぞれ有する
ことを特徴とする複列自動調心ころ軸受。(1) The outer ring 31 has a spherical outer ring raceway 32, and the inner ring 33
has two rows of inner ring raceways 34, and a cage 41 is disposed between the outer ring 31 and the inner ring 33, and the cage 41 has an annular portion 42 on the inner side of the bearing and an annular portion 43 on the outer side of the bearing. In this double-row self-aligning roller bearing, the cage 41 is made of synthetic resin, and the pockets 45 are formed in a double row self-aligning roller bearing. The side surface 51 of the column is a plane that is perpendicular to a plane 53 containing the ring center of the bearing and the ring center 52 of the spherical roller at both sides in the axial direction with respect to the axial center of the side surface 51 of the column. Concave curved surfaces 57 and 58 having arcs of curvature in accordance with the rolling surface 55 of the spherical roller in the axial and radial directions are provided on the inside and outside of the bearing from the plane 54 that includes the axis 52 of the spherical roller, respectively. However, in the retainer 41, the distance B between the outer circumferential surface 61 of the previous column and the outer circumferential surface 61 of the adjacent column is equal to that of the spherical roller 4.
The part shorter than the diameter of the corresponding part of 7 and the inner peripheral surface of the column 6
2 and an inner peripheral surface 62 of an adjacent column, each having a portion where the distance C is shorter than the diameter of the corresponding portion of the spherical roller 47.
請求の範囲第１項記載の複列自動調心ころ軸受。(2) A double-row self-aligning roller bearing according to claim 1, wherein the side surface 51 of the column has a radial groove 71.
ろ４７との間のすきま７６が保持器の軸受外側の環状部
の外周部７８と球面ころ４７との間のすきま７９より大
きい特許請求の範囲第１項記載の複列自動調心ころ軸受
。(3) The clearance 76 between the inner peripheral part 75 of the annular part outside the bearing of the cage and the spherical rollers 47 is larger than the clearance 79 between the outer peripheral part 78 of the annular part outside the bearing of the cage and the spherical rollers 47. A double-row self-aligning roller bearing according to claim 1.
１に設けたシール面９３とが密封部を構成する特許請求
の範囲第１項記載の複列自動調心ころ軸受。(4) The outer circumferential surface 92 of the annular portion on the outside of the cage bearing and the outer ring 3
2. The double-row self-aligning roller bearing according to claim 1, wherein the sealing surface 93 provided in the double-row self-aligning roller bearing constitutes a sealing portion.
凹状のガイド部８７を有する特許請求の範囲第１項記載
の複列自動調心ころ軸受。(5) The double-row self-aligning roller bearing according to claim 1, wherein the pillar 44 has a concave guide portion 87 between the outer peripheral surface 61 of the pillar and the side surface 51 of the pillar.
すきまＬ、Ｍが柱の側面５１と球面ころ４７との間の半
径方向すきまＮより大きい特許請求の範囲第１項記載の
複列自動調心ころ軸受。(6) The radial clearances L and M between the cage 41 and the bearing rings 31 and 33 are larger than the radial clearance N between the side surface 51 of the column and the spherical rollers 47, as set forth in claim 1. Double row spherical roller bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1250466A JPH03144110A (en) | 1989-09-28 | 1989-09-28 | Double row automatic aligning roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1250466A JPH03144110A (en) | 1989-09-28 | 1989-09-28 | Double row automatic aligning roller bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03144110A true JPH03144110A (en) | 1991-06-19 |
| JPH0571807B2 JPH0571807B2 (en) | 1993-10-08 |
Family
ID=17208293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1250466A Granted JPH03144110A (en) | 1989-09-28 | 1989-09-28 | Double row automatic aligning roller bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03144110A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015140918A (en) * | 2014-01-30 | 2015-08-03 | 日本精工株式会社 | Self-aligning roller bearing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5324940A (en) * | 1976-08-18 | 1978-03-08 | Skf Kugellagerfabriken Gmbh | Plastic device for cylindrical roller bearing |
| US4345800A (en) * | 1979-02-17 | 1982-08-24 | Fag Kugelfischer Georg Schafer & Co. | Double-row radially self-aligning roller bearing |
-
1989
- 1989-09-28 JP JP1250466A patent/JPH03144110A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5324940A (en) * | 1976-08-18 | 1978-03-08 | Skf Kugellagerfabriken Gmbh | Plastic device for cylindrical roller bearing |
| US4345800A (en) * | 1979-02-17 | 1982-08-24 | Fag Kugelfischer Georg Schafer & Co. | Double-row radially self-aligning roller bearing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015140918A (en) * | 2014-01-30 | 2015-08-03 | 日本精工株式会社 | Self-aligning roller bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0571807B2 (en) | 1993-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5033878A (en) | Cage for spherical roller bearing | |
| CN108397476B (en) | Ball bearing | |
| JP3874463B2 (en) | Synthetic resin cage for roller bearings | |
| US4629339A (en) | Roller bearing | |
| JPS6347930B2 (en) | ||
| US4391476A (en) | Roller bearing | |
| JPH0619176B2 (en) | 4-point contact ball bearing synthetic resin cage | |
| JP2516889B2 (en) | Ball bearings, especially cages for angular contact ball bearings | |
| US11181149B2 (en) | Rolling bearing | |
| US20030021506A1 (en) | Angular contact ball-bearing cage with lubricant pockets | |
| JP3934277B2 (en) | Rolling bearing | |
| US4838712A (en) | Ball bearing and the retainer thereof | |
| JPS648208B2 (en) | ||
| US3624815A (en) | Ball retainer and bearing | |
| JPS6350567B2 (en) | ||
| JP2005133818A (en) | Rolling bearing | |
| JP2009275722A (en) | Rolling bearing | |
| JPH074439A (en) | High speed angular ball bearing | |
| JPH03144110A (en) | Double row automatic aligning roller bearing | |
| JP2011117542A (en) | Rolling bearing and retainer for rolling bearing | |
| JPH11280769A (en) | Roller bearing | |
| US4149760A (en) | Snap cage of synthetic material | |
| JPH0313619Y2 (en) | ||
| JPH043128Y2 (en) | ||
| US11221044B2 (en) | Rolling bearing |