JP7180547B2 - Tapered roller bearing assembly method - Google Patents

Tapered roller bearing assembly method Download PDF

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JP7180547B2
JP7180547B2 JP2019110410A JP2019110410A JP7180547B2 JP 7180547 B2 JP7180547 B2 JP 7180547B2 JP 2019110410 A JP2019110410 A JP 2019110410A JP 2019110410 A JP2019110410 A JP 2019110410A JP 7180547 B2 JP7180547 B2 JP 7180547B2
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inner ring
tapered roller
tapered
roller bearing
ring
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JP2020200935A (en
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健太 立石
友章 坂瀬
大樹 吉間
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NSK Ltd
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Description

本発明は、円すいころ軸受の組立方法に関する。 The present invention relates to a tapered roller bearing assembly method.

従来、建設機械をはじめとする各種の駆動装置には、その回転機構を回転自在に支持する軸受として円すいころ軸受が使用されている。図３に示すように、この円すいころ軸受１０は、内周面に外輪軌道面１１ａを有する外輪１１と、外周面に内輪軌道面１２ａを有する内輪１２と、外輪軌道面１１ａと内輪軌道面１２ａとの間に転動可能に設けられる複数の円すいころ１３と、複数の円すいころ１３を円周方向に所定の間隔で保持する保持器１４と、を備えて構成される。 2. Description of the Related Art Conventionally, tapered roller bearings have been used as bearings for rotatably supporting rotary mechanisms in various driving devices including construction machinery. As shown in FIG. 3, this tapered roller bearing 10 includes an outer ring 11 having an outer ring raceway surface 11a on its inner peripheral surface, an inner ring 12 having an inner ring raceway surface 12a on its outer peripheral surface, an outer ring raceway surface 11a and an inner ring raceway surface 12a. and a plurality of tapered rollers 13 that are rotatably provided between them, and a retainer 14 that holds the plurality of tapered rollers 13 at predetermined intervals in the circumferential direction.

円すいころ軸受１０の保持器１４としては、樹脂製のものや金属製のものが使用される。金属製の保持器１４を用いた円すいころ軸受１０の組立方法は、いわゆる、加締め方式が取られている。具体的には、図４Ａに示すように、まず、保持器１４のポケットに円すいころ１３を保持させ、内輪１２に組み込む。そして、内輪１２の大鍔部１６側の軸方向端面を内輪支持面３０に当接させた状態で、保持器１４に当接させた加締め治具２０を、保持器１４に向けて押し込むことにより、内輪１２、円すいころ１３及び保持器１４が分離しないよう、任意のポケット隙間になるまで加締める、といった方法である。 As the cage 14 of the tapered roller bearing 10, one made of resin or metal is used. A method of assembling the tapered roller bearing 10 using the metal retainer 14 adopts a so-called caulking method. Specifically, as shown in FIG. 4A , first, tapered rollers 13 are held in pockets of retainer 14 and incorporated into inner ring 12 . Then, the crimping jig 20 in contact with the retainer 14 is pushed toward the retainer 14 while the axial end face of the inner ring 12 on the side of the large flange portion 16 is in contact with the inner ring support surface 30 . , so that the inner ring 12, the tapered rollers 13 and the retainer 14 are not separated from each other.

このような加締め方式により、内輪１２、円すいころ１３及び保持器１４を一体化して、円すいころ軸受を組み立てる方法として、例えば特許文献１に記載の技術がある。 As a method of assembling a tapered roller bearing by integrating the inner ring 12, the tapered rollers 13 and the retainer 14 by such a caulking method, there is a technique described in Patent Document 1, for example.

特開２０１７－１５１８１号公報JP 2017-15181 A

しかし、図４Ａに示すような従来の円すいころ軸受１０の組立方法では、加締め治具２０により保持器１４の加締めを行うにあたり、加締め時の力の伝達経路が、加締め治具２０、保持器１４、円すいころ１３、内輪１２、そして内輪支持面３０の順となる。 However, in the conventional method for assembling the tapered roller bearing 10 as shown in FIG. , cage 14 , tapered rollers 13 , inner ring 12 , and inner ring support surface 30 .

すなわち、加締め治具２０に与えられた力は、加締め治具２０に当接する保持器１４へと伝達され、保持器１４が円すいころ１３の小径側端面１３ａを押し込むことで、円すいころ１３へと伝達される。そして、円すいころ１３へ伝達された力は、円すいころ１３の大径側端面１３ｂと、内輪１２の大鍔部１６における大鍔面１６ａとの接触により、内輪１２へと伝達された後、内輪１２に当接する内輪支持面３０へと伝達される。 That is, the force applied to the crimping jig 20 is transmitted to the retainer 14 in contact with the crimping jig 20, and the retainer 14 pushes the small-diameter side end face 13a of the tapered roller 13, thereby is transmitted to The force transmitted to the tapered rollers 13 is transmitted to the inner ring 12 by contact between the large-diameter end surface 13b of the tapered rollers 13 and the large flange surface 16a of the large flange portion 16 of the inner ring 12. 12 is transmitted to the inner ring bearing surface 30 which abuts on the inner ring bearing surface 30 .

この場合において、円すいころ１３は、保持器１４により小径側端面１３ａで押される結果、図４Ｂに示すように、円すいころ１３の大径側端面１３ｂと、内輪１２の大鍔面１６ａとの接触部を支点として回転する。その結果、大径側端面１３ｂと大鍔面１６ａの間で高い面圧が発生し、円すいころ１３の大径側端面１３ｂに圧痕が発生するおそれがあった。 In this case, the tapered rollers 13 are pushed by the small diameter side end faces 13a of the cage 14, and as a result, as shown in FIG. It rotates with the part as a fulcrum. As a result, a high surface pressure is generated between the large-diameter end surface 13b and the large flange surface 16a, and there is a possibility that the large-diameter end surface 13b of the tapered roller 13 is indented.

本発明は、前述した課題に鑑みてなされたものであり、その目的は、金属製の保持器を加締めることにより、内輪、円すいころ及び保持器を一体化して円すいころ軸受の組み立てを行うに当たり、円すいころの大径側端面に圧痕が発生するのを抑制することができる円すいころ軸受の組立方法を提供することにある。 The present invention has been made in view of the above-mentioned problems, and its object is to assemble a tapered roller bearing by integrating an inner ring, tapered rollers, and a cage by crimping a metallic cage. Another object of the present invention is to provide a method for assembling a tapered roller bearing that can suppress the occurrence of dents on the large-diameter side end faces of the tapered rollers.

本発明は、下記（１）の構成からなる。
（１）内周面に外輪軌道面を有する外輪と、外周面に内輪軌道面を有する内輪と、前記外輪軌道面と前記内輪軌道面との間に転動可能に設けられる複数の円すいころと、前記複数の円すいころを円周方向に所定の間隔で保持する金属製の保持器と、を備え、
前記内輪の大径側端部に大鍔部が設けられる円すいころ軸受の組立方法であって、
前記内輪に前記保持器及び前記複数の円すいころが組み込まれた状態で、前記内輪の大鍔部側の端面を内輪支持面に当接させ、
前記内輪支持面及び前記円すいころの大径側端面の各々に当接するバックアップリングを介在させた状態で、前記保持器を加締めることを特徴とする円すいころ軸受の組立方法。 The present invention consists of the following configuration (1).
(1) An outer ring having an outer ring raceway surface on its inner peripheral surface, an inner ring having an inner ring raceway surface on its outer peripheral surface, and a plurality of tapered rollers provided to roll between the outer ring raceway surface and the inner ring raceway surface. , a metal retainer that retains the plurality of tapered rollers at predetermined intervals in the circumferential direction,
A method for assembling a tapered roller bearing in which a large flange is provided at the large diameter side end of the inner ring,
in a state in which the retainer and the plurality of tapered rollers are incorporated in the inner ring, the end surface of the inner ring on the side of the large flange portion is brought into contact with the inner ring support surface;
A method of assembling a tapered roller bearing, wherein the retainer is crimped in a state in which a backup ring abutting against each of the inner ring support surface and the large-diameter side end surface of the tapered roller is interposed.

また、本発明の好ましい実施形態は、下記（２）の構成からなる。
（２）前記円すいころの大径側端面と、前記内輪における大鍔部の大鍔面との間に間隙を有するようにして、前記バックアップリングを介在させることを特徴とする、上記（１）に記載の円すいころ軸受の組立方法。 A preferred embodiment of the present invention has the following configuration (2).
(2) The above (1) is characterized in that the backup ring is interposed so as to have a gap between the large-diameter end surface of the tapered roller and the large flange surface of the large flange portion of the inner ring. A method for assembling the tapered roller bearing described in .

また、本発明の好ましい実施形態は、下記（３）の構成からなる。
（３）前記円すいころの大径側端面と前記バックアップリングの接触面積が、前記円すいころの大径側端面と前記内輪における大鍔面との接触面積よりも大きいことを特徴とする上記（１）または（２）に記載の円すいころ軸受の組立方法。 A preferred embodiment of the present invention has the following configuration (3).
(3) The contact area between the large-diameter end surface of the tapered roller and the backup ring is larger than the contact area between the large-diameter end surface of the tapered roller and the large flange surface of the inner ring. ) or the tapered roller bearing assembly method according to (2).

本発明によれば、内輪支持面と、円すいころの大径側端面との間にバックアップリングを介在させた状態で、保持器を加締めるため、加締め時の力の少なくとも一部は、バックアップリングを介して内輪支持面へと伝達される。従って、円すいころによる、円すいころの大径側端面と、内輪の大鍔面との接触部を支点する回転が抑制され、円すいころの大径側端面と、内輪の大鍔面と間の面圧が低下するため、円すいころの大径側端面に圧痕が発生するのを抑制することができる。 According to the present invention, since the retainer is crimped with the backup ring interposed between the inner ring support surface and the large-diameter end surface of the tapered roller, at least part of the force during crimping is applied to the backup ring. It is transmitted through the ring to the inner ring support surface. Therefore, the rotation of the tapered roller around the contact portion between the large-diameter side end surface of the tapered roller and the large flange surface of the inner ring is suppressed, and the surface between the large-diameter side end surface of the tapered roller and the large flange surface of the inner ring is suppressed. Since the pressure is reduced, it is possible to suppress the occurrence of dents on the large-diameter side end faces of the tapered rollers.

図１は、本発明に係る円すいころ軸受の組立方法の第１実施形態を説明する断面図である。FIG. 1 is a cross-sectional view for explaining a first embodiment of a method for assembling a tapered roller bearing according to the present invention. 図２は、本発明に係る円すいころ軸受の組立方法の第２実施形態を説明する断面図である。FIG. 2 is a cross-sectional view for explaining a second embodiment of the tapered roller bearing assembly method according to the present invention. 図３は、本発明が適用された円すいころ軸受を説明する断面図である。FIG. 3 is a cross-sectional view illustrating a tapered roller bearing to which the present invention is applied. 図４Ａは、従来の円すいころ軸受の組立方法を説明する断面図であり、加締め時の力の伝達経路を説明するための図である。FIG. 4A is a cross-sectional view for explaining a method of assembling a conventional tapered roller bearing, and is a diagram for explaining a force transmission path during caulking. 図４Ｂは、従来の円すいころ軸受の組立方法を説明する断面図であり、円すいころの回転により、円すいころの大径側端面と内輪の大鍔面の間で高い面圧が発生する状態を示す図である。FIG. 4B is a cross-sectional view illustrating a conventional tapered roller bearing assembly method, showing a state in which high surface pressure is generated between the large-diameter side end surface of the tapered roller and the large flange surface of the inner ring due to the rotation of the tapered rollers. FIG. 10 shows.

以下、本発明に係る円すいころ軸受の組立方法の各実施形態について、図面に基づいて詳細に説明する。 Hereinafter, each embodiment of the method for assembling a tapered roller bearing according to the present invention will be described in detail based on the drawings.

まず、図３を参照して、本発明が適用された円すいころ軸受について説明する。 First, a tapered roller bearing to which the present invention is applied will be described with reference to FIG.

円すいころ軸受１０は、図３に示すように、内周面に外輪軌道面１１ａを有する外輪１１と、外周面に内輪軌道面１２ａを有する内輪１２と、外輪軌道面１１ａと内輪軌道面１２ａとの間に転動可能に設けられる複数の円すいころ１３と、複数の円すいころ１３を円周方向に所定の間隔で保持する金属製の保持器１４と、を備える。 As shown in FIG. 3, the tapered roller bearing 10 includes an outer ring 11 having an outer ring raceway surface 11a on its inner peripheral surface, an inner ring 12 having an inner ring raceway surface 12a on its outer peripheral surface, an outer ring raceway surface 11a and an inner ring raceway surface 12a. A plurality of tapered rollers 13 provided to be able to roll between them, and a metal retainer 14 that retains the plurality of tapered rollers 13 at predetermined intervals in the circumferential direction.

内輪１２は、内輪１２の小径側端部に設けられる小鍔部１５と、内輪１２の大径側端部に設けられる大鍔部１６と、を有する。なお、小鍔部１５における小鍔面１５ａは、小鍔部１５が円すいころ１３の小径側端面１３ａと接触する面である。また、大鍔部１６における大鍔面１６ａは、大鍔部１６が円すいころ１３の大径側端面１３ｂと接触する面である。 The inner ring 12 has a small flange portion 15 provided at the small diameter end portion of the inner ring 12 and a large flange portion 16 provided at the large diameter end portion of the inner ring 12 . A small flange surface 15 a of the small flange portion 15 is a surface where the small flange portion 15 contacts the small diameter side end surface 13 a of the tapered roller 13 . A large flange surface 16 a of the large flange portion 16 is a surface where the large flange portion 16 comes into contact with the large diameter end surface 13 b of the tapered roller 13 .

保持器１４は、例えば鉄板のプレス加工などで形成されており、小径側円環部１４ａと、小径側円環部１４ａと同軸配置される大径側円環部１４ｂと、小径側円環部１４ａと大径側円環部１４ｂとを連結すべく、周方向に所定の間隔（例えば、略等間隔）で配置される複数の柱部１４ｃと、を備え、周方向に互いに隣り合う各柱部１４ｃ間に、円すいころ１３を転動可能に保持するポケット部１４ｄが形成されている。 The retainer 14 is formed, for example, by pressing an iron plate, and includes a small-diameter side annular portion 14a, a large-diameter side annular portion 14b coaxially arranged with the small-diameter side annular portion 14a, and a small-diameter side annular portion 14b. A plurality of pillars 14c arranged at predetermined intervals (for example, approximately equal intervals) in the circumferential direction so as to connect the pillars 14a and the large-diameter side annular portion 14b, and each pillar adjacent to each other in the circumferential direction A pocket portion 14d is formed between the portions 14c to hold the tapered rollers 13 in a rollable manner.

本発明は、かかる円すいころ軸受の組立方法を提供するものであり、引き続き、実施形態について説明する。 The present invention provides a method for assembling such a tapered roller bearing, and will continue to describe the embodiments.

（第１実施形態）
図１を参照して、本発明に係る円すいころ軸受の組立方法の第１実施形態について説明する。図１は、金属製の保持器１４を備える円すいころ軸受における、内輪１２に対して円すいころ１３を保持した保持器１４を組み付ける方法を説明する断面図である。 (First embodiment)
A first embodiment of a method for assembling a tapered roller bearing according to the present invention will be described with reference to FIG. FIG. 1 is a cross-sectional view illustrating a method of assembling the retainer 14 holding the tapered rollers 13 to the inner ring 12 in a tapered roller bearing provided with a retainer 14 made of metal.

本実施形態の組立方法では、加締め治具２０が使用されており、この加締め治具２０は、略円環状に形成されている。この加締め治具２０の内周面には、保持器１４の柱部１４ｃに対面する加締め部２０ａと、保持器１４のポケットよりも径方向（図１の左右方向）外側に位置する円すいころ１３に対面する逃げ２０ｂが、加締め治具２０の周方向にわたって交互に設けられている。 In the assembly method of this embodiment, a crimping jig 20 is used, and the crimping jig 20 is formed in a substantially annular shape. The inner peripheral surface of the crimping jig 20 includes a crimping portion 20a facing the column portion 14c of the retainer 14, and a conical portion positioned radially outward (horizontal direction in FIG. 1) of the pocket of the retainer 14. Recesses 20 b facing the rollers 13 are provided alternately along the circumferential direction of the crimping jig 20 .

加締め部２０ａは、加締め時に保持器１４へ十分な力が伝達されるよう、保持器１４の加締め後の柱部１４ｃの傾斜角度に適合する所定のテーパー状に形成される。また、逃げ２０ｂは、加締め時において、円すいころ１３と干渉しないよう、加締め部２０ａに対して凹んでいる。 The caulked portion 20a is formed in a predetermined tapered shape that matches the inclination angle of the column portion 14c after caulking of the retainer 14 so that a sufficient force is transmitted to the retainer 14 during crimping. Further, the relief 20b is recessed with respect to the caulked portion 20a so as not to interfere with the tapered rollers 13 during caulking.

そして、本実施形態では、内輪１２に対して円すいころ１３を保持した保持器１４を組み付けるにあたり、まず、保持器１４のポケットに円すいころ１３を保持させ、内輪１２に組み込む。そして、内輪１２における大鍔部１６側の軸方向（図１の上下方向）端面１６ｂを内輪支持面３０に当接させ、更に、内輪支持面３０及び円すいころ１３の大径側端面１３ｂの各々に当接する円環状のバックアップリング４０を介在させる。 In this embodiment, when assembling the retainer 14 holding the tapered rollers 13 to the inner ring 12 , first, the tapered rollers 13 are held in the pockets of the retainer 14 and incorporated into the inner ring 12 . Then, the axial direction (vertical direction in FIG. 1) end face 16b of the inner ring 12 on the side of the large flange portion 16 is brought into contact with the inner ring support surface 30, and the inner ring support surface 30 and the large diameter side end faces 13b of the tapered rollers 13 are each brought into contact. A ring-shaped backup ring 40 abutting on is interposed.

バックアップリング４０は、内輪１２の大鍔部１６よりも大径であり、内輪１２の径方向外側に配置された状態で、内輪支持面３０と当接する。また、バックアップリング４０の上面４０ａ（内輪支持面３０と当接する面とは反対側の面）が、内輪１２に組み込まれた状態の円すいころ１３の大径側端面１３ｂを案内するようにテーパー状に形成され、大径側端面１３ｂと当接する。本実施形態においては、バックアップリング４０の上面４０ａは、内輪支持面３０に支持された内輪１２の大鍔面１６ａと略面一に形成される。
また、本実施形態では、バックアップリング４０の上面４０ａは、円すいころ１３のピッチ円直径と大径側端面１３ｂとの交点よりも、径方向外側まで形成される。 The backup ring 40 has a diameter larger than that of the large collar portion 16 of the inner ring 12 , and contacts the inner ring support surface 30 while being disposed radially outward of the inner ring 12 . In addition, the upper surface 40a of the backup ring 40 (the surface opposite to the surface in contact with the inner ring support surface 30) is tapered so as to guide the large-diameter end surface 13b of the tapered roller 13 assembled in the inner ring 12. , and abuts on the large-diameter side end surface 13b. In this embodiment, the upper surface 40a of the backup ring 40 is formed substantially flush with the large collar surface 16a of the inner ring 12 supported by the inner ring support surface 30. As shown in FIG.
Further, in the present embodiment, the upper surface 40a of the backup ring 40 is formed radially outward from the intersection of the pitch diameter of the tapered roller 13 and the large-diameter side end surface 13b.

この状態で、加締め治具２０の加締め部２０ａを保持器１４の柱部１４ｃに接触させながら、内輪支持面３０に向けて押し込むことにより、内輪１２、円すいころ１３及び保持器１４が分離しない任意のポケット隙間になるように、保持器１４を加締める。 In this state, the inner ring 12, the tapered rollers 13 and the cage 14 are separated by pushing the crimping portion 20a of the crimping jig 20 toward the inner ring support surface 30 while contacting the column portion 14c of the cage 14. The retainer 14 is crimped so that there is an arbitrary pocket gap that does not occur.

上記のように、内輪支持面３０と、円すいころ１３の大径側端面１３ｂとの間に、円環状のバックアップリング４０が介在することで、加締め時の力の少なくとも一部は、バックアップリング４０を介して内輪支持面３０へと伝達される。すなわち、加締め時の力の伝達経路として、加締め治具２０、保持器１４、円すいころ１３、バックアップリング４０、そして内輪支持面３０の順となる伝達経路が形成される。従って、円すいころ１３による、円すいころ１３の大径側端面１３ｂと、内輪１２の大鍔面１６ａとの接触部を支点する回転が抑制され、円すいころ１３の大径側端面１３ｂと、内輪１２の大鍔面１６ａとの間の面圧が低下するため、円すいころ１３の大径側端面１３ｂに圧痕が発生するのを抑制することができる。
さらに、バックアップリング４０の上面４０ａが、円すいころ１３のピッチ円直径と大径側端面１３ｂとの交点よりも、径方向外側まで形成されることで、円すいころ１３による回転をより抑制することができる。 As described above, by interposing the annular backup ring 40 between the inner ring support surface 30 and the large-diameter side end surface 13b of the tapered roller 13, at least part of the force during crimping is absorbed by the backup ring. 40 to the inner ring support surface 30 . That is, a transmission path is formed in the order of the crimping jig 20, the retainer 14, the tapered rollers 13, the backup ring 40, and the inner ring support surface 30 as a transmission path of force during crimping. Therefore, the rotation of the tapered rollers 13 about the contact portion between the large-diameter end surface 13b of the tapered roller 13 and the large flange surface 16a of the inner ring 12 is suppressed. Since the surface pressure between the large flange surface 16a of the tapered roller 13 and the large flange surface 16a is reduced, the occurrence of dents on the large diameter side end surface 13b of the tapered roller 13 can be suppressed.
Further, the upper surface 40a of the backup ring 40 is formed radially outside the intersection of the pitch diameter of the tapered rollers 13 and the large-diameter side end surface 13b, thereby further suppressing rotation by the tapered rollers 13. can.

また、円すいころ１３の大径側端面１３ｂとバックアップリング４０の接触面積が、円すいころ１３の大径側端面１３ｂと内輪１２における大鍔面１６ａとの接触面積よりも大きいことが好ましい。上記構成を有することにより、保持器１４の加締め時において、バックアップリング４０が、内輪１２における大鍔面１６ａよりも大面積で円すいころ１３を支持するため、円すいころ１３の大径側端面１３ｂと、内輪１２の大鍔面１６ａとの間の面圧をより低下させることができる。 Moreover, it is preferable that the contact area between the large-diameter end surface 13b of the tapered roller 13 and the backup ring 40 is larger than the contact area between the large-diameter end surface 13b of the tapered roller 13 and the large flange surface 16a of the inner ring 12 . With the above configuration, when the retainer 14 is caulked, the backup ring 40 supports the tapered rollers 13 over a larger area than the large flange surface 16a of the inner ring 12, so that the large-diameter side end surfaces 13b of the tapered rollers 13 and the large flange surface 16a of the inner ring 12 can be further reduced.

なお、上記構成を実現する方法として、例えば、バックアップリング４０における径方向の幅が、内輪１２における大鍔面１６ａの径方向の幅よりも大きいバックアップリング４０を用いることができる。 As a method for realizing the above configuration, for example, a backup ring 40 having a radial width larger than the radial width of the large flange surface 16 a of the inner ring 12 can be used.

バックアップリング４０は、内輪１２の大鍔部１６よりも、内輪１２の径方向外側に配置されていれば、内輪１２の大鍔部１６とバックアップリング４０は必ずしも接触する必要はないが、バックアップリング４０の内周面が、内輪１２の大鍔部１６の外周面と嵌合するように、バックアップリング４０の内径を設定することで、バックアップリング４０の位置決めが容易となるため、好ましい。
また、バックアップリング４０の外径は、保持器１４の内周面と干渉しない大きさに設定する必要がある。 As long as the backup ring 40 is arranged radially outward of the inner ring 12 from the large flange portion 16 of the inner ring 12 , the backup ring 40 does not necessarily need to be in contact with the large flange portion 16 of the inner ring 12 . Setting the inner diameter of the backup ring 40 so that the inner peripheral surface of the backup ring 40 fits with the outer peripheral surface of the large flange portion 16 of the inner ring 12 facilitates the positioning of the backup ring 40, which is preferable.
Also, the outer diameter of the backup ring 40 must be set to a size that does not interfere with the inner peripheral surface of the retainer 14 .

バックアップリング４０の材質については、上記した作用効果を得ることができるものであれば特に制限されないが、例えば、鉄をはじめとする金属や、樹脂などを用いることができる。 The material of the backup ring 40 is not particularly limited as long as it can obtain the above-described effects. For example, metal such as iron, resin, or the like can be used.

（第２実施形態）
続いて、図２を参照して、本発明に係る円すいころ軸受の組立方法の第２実施形態について説明する。なお、第１実施形態と同一部分については、図面に同一符号を付して説明を省略あるいは簡略化する。 (Second embodiment)
Next, a second embodiment of the tapered roller bearing assembly method according to the present invention will be described with reference to FIG. Note that the same reference numerals are given to the same parts as in the first embodiment, and the description thereof is omitted or simplified.

本実施形態では、図２に示すように、円すいころ１３の大径側端面１３ｂと、内輪１２における大鍔部１６の大鍔面１６ａとの間に、間隙Ｇを有するようにして、内輪支持面３０と、円すいころ１３の大径側端面１３ｂとの間にバックアップリング４０を介在させる。 In this embodiment, as shown in FIG. 2, a gap G is provided between the large-diameter side end surface 13b of the tapered roller 13 and the large flange surface 16a of the large flange portion 16 of the inner ring 12 to support the inner ring. A backup ring 40 is interposed between the surface 30 and the large-diameter end surface 13b of the tapered roller 13. - 特許庁

上記構成を有することにより、保持器１４の加締め時において、円すいころ１３の大径側端面１３ｂと、内輪１２の大鍔面１６ａとが接触しないため、円すいころ１３の大径側端面１３ｂにおける圧痕の発生を防止することができる。また、内輪１２の大鍔面１６ａは、加締め時に力が伝わらないため、内輪１２の大鍔面１６ａにおける圧痕の発生も防止することができる。 With the above configuration, when the retainer 14 is crimped, the large-diameter end surfaces 13b of the tapered rollers 13 and the large flange surface 16a of the inner ring 12 do not come into contact with each other. It is possible to prevent the occurrence of indentations. In addition, since force is not transmitted to the large flange surface 16a of the inner ring 12 during crimping, the occurrence of dents on the large flange surface 16a of the inner ring 12 can also be prevented.

なお、上記間隙Ｇを設けるためには、バックアップリング４０の上面４０ａの高さ(本実施形態では、図２に示すように、バックアップリング４０の上面４０ａが、内輪１２に組み込まれた状態の円すいころ１３の大径側端面１３ｂを案内するようにテーパー状に形成されているため、上面４０ａにおける最も低い高さ)が、内輪１２の大鍔面１６ａの高さよりも高くなるよう、バックアップリング４０の軸方向の高さを設定する必要がある。
その他の構成及び作用効果については、上記第１実施形態と同様である。 In order to provide the gap G, the height of the upper surface 40a of the backup ring 40 (in this embodiment, as shown in FIG. Since the backup ring 40 is tapered to guide the large-diameter side end surface 13 b of the roller 13 , the lowest height of the upper surface 40 a is higher than the height of the large flange surface 16 a of the inner ring 12 . You need to set the axial height of the
Other configurations and effects are the same as those of the first embodiment.

なお、本発明は、上記各実施形態に例示したものに限定されるものではなく、適宜変更、改良等が可能である。 It should be noted that the present invention is not limited to those exemplified in the above embodiments, and can be modified, improved, etc. as appropriate.

１０ 円すいころ軸受
１１ 外輪
１１ａ 外輪軌道面
１２ 内輪
１２ａ 内輪軌道面
１３ 円すいころ
１３ａ 小径側端面
１３ｂ 大径側端面
１４ 保持器
１４ａ 小径側円環部
１４ｂ 大径側円環部
１４ｃ 柱部
１４ｄ ポケット部
１５ 小鍔部
１５ａ 小鍔面
１６ 大鍔部
１６ａ 大鍔面
１６ｂ 端面
２０ 加締め治具
２０ａ 加締め部
２０ｂ 逃げ
３０ 内輪支持面
４０ バックアップリング
４０ａ 上面
Ｇ 間隙 10 tapered roller bearing 11 outer ring 11a outer ring raceway surface 12 inner ring 12a inner ring raceway surface 13 tapered roller 13a small diameter side end surface 13b large diameter side end surface 14 retainer 14a small diameter side annular portion 14b large diameter side annular portion 14c column portion 14d pocket portion 15 Small flange portion 15a Small flange surface 16 Large flange portion 16a Large flange surface 16b End surface 20 Crimping jig 20a Crimping portion 20b Relief 30 Inner ring support surface 40 Backup ring 40a Upper surface G Gap

Claims (3)

内周面に外輪軌道面を有する外輪と、
外周面に内輪軌道面を有する内輪と、
前記外輪軌道面と前記内輪軌道面との間に転動可能に設けられる複数の円すいころと、
前記複数の円すいころを円周方向に所定の間隔で保持する金属製の保持器と、
を備え、
前記内輪の大径側端部に大鍔部が設けられる円すいころ軸受の組立方法であって、
前記内輪に前記保持器及び前記複数の円すいころが組み込まれた状態で、前記内輪の大鍔部側の端面を内輪支持面に当接させ、
前記内輪支持面及び前記円すいころの大径側端面の各々に当接するバックアップリングを介在させた状態で、前記保持器を加締めることを特徴とする円すいころ軸受の組立方法。 an outer ring having an outer ring raceway surface on its inner peripheral surface;
an inner ring having an inner ring raceway surface on its outer peripheral surface;
a plurality of tapered rollers rotatably provided between the outer ring raceway surface and the inner ring raceway surface;
a metal retainer that retains the plurality of tapered rollers at predetermined intervals in the circumferential direction;
with
A method for assembling a tapered roller bearing in which a large flange is provided at the large diameter side end of the inner ring,
in a state in which the retainer and the plurality of tapered rollers are incorporated in the inner ring, the end surface of the inner ring on the side of the large flange portion is brought into contact with the inner ring support surface;
A method of assembling a tapered roller bearing, wherein the retainer is crimped in a state in which a backup ring abutting against each of the inner ring support surface and the large-diameter side end surface of the tapered roller is interposed. 前記円すいころの大径側端面と、前記内輪における大鍔部の大鍔面との間に間隙を有するようにして、前記バックアップリングを介在させることを特徴とする、請求項１に記載の円すいころ軸受の組立方法。 2. The cone according to claim 1, wherein the backup ring is interposed so as to provide a gap between the large-diameter side end surface of the tapered roller and the large brim surface of the large brim portion of the inner ring. A roller bearing assembly method. 前記円すいころの大径側端面と前記バックアップリングの接触面積が、前記円すいころの大径側端面と前記内輪における大鍔面との接触面積よりも大きいことを特徴とする請求項１または２に記載の円すいころ軸受の組立方法。 3. The contact area between the large-diameter side end surface of the tapered roller and the backup ring is larger than the contact area between the large-diameter side end surface of the tapered roller and the large flange surface of the inner ring. A method of assembling the tapered roller bearing described.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000266063A (en) 1999-03-17 2000-09-26 Nsk Ltd Conical roller bearing
JP2001140900A (en) 1999-11-12 2001-05-22 Nsk Ltd Tapered roller bearing and method of assembly
JP2005147365A (en) 2003-11-19 2005-06-09 Nakanishi Metal Works Co Ltd Retainer for conical roller bearing and assembling method of conical roller bearing

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001050281A (en) * 1999-08-05 2001-02-23 Nsk Ltd Tapered roller bearing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000266063A (en) 1999-03-17 2000-09-26 Nsk Ltd Conical roller bearing
JP2001140900A (en) 1999-11-12 2001-05-22 Nsk Ltd Tapered roller bearing and method of assembly
JP2005147365A (en) 2003-11-19 2005-06-09 Nakanishi Metal Works Co Ltd Retainer for conical roller bearing and assembling method of conical roller bearing

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