JP4811056B2 - Method for manufacturing roller bearing and tapered roller bearing - Google Patents

Method for manufacturing roller bearing and tapered roller bearing Download PDF

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JP4811056B2
JP4811056B2 JP2006055165A JP2006055165A JP4811056B2 JP 4811056 B2 JP4811056 B2 JP 4811056B2 JP 2006055165 A JP2006055165 A JP 2006055165A JP 2006055165 A JP2006055165 A JP 2006055165A JP 4811056 B2 JP4811056 B2 JP 4811056B2
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cage
bearing
inner ring
flange portion
roller
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JP2007232105A (en
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一登 小林
良彦 和田
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NSK Ltd
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NSK Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/54—Cages for rollers or needles made from wire, strips, or sheet metal
    • F16C33/542—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal
    • F16C33/543—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • F16C43/06—Placing rolling bodies in cages or bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
    • F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/30—Material joints
    • F16C2226/36—Material joints by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Rolling Contact Bearings (AREA)

Description

本発明は、ころ軸受及び円錐ころ軸受の製造方法に関する。   The present invention relates to a roller bearing and a method for manufacturing a tapered roller bearing.

一般に円錐ころ軸受で使用される保持器（かご型保持器）は、組立て前に予め保持器の径を組立て完了時より広げ、前記保持器の各ポケット部にころを収めた状態で形成される最小内接円径を軸受内輪の小径フランジ部側つばの外径より大きくしておくことで、軸受内輪に組込まれる。そして、前記保持器が前記軸受内輪に組み込まれた後、外側よりプレス型を押し付ける等して、前記保持器の小径フランジ部を加締めにより塑性変形させ、前記保持器の径を収縮させる。これによって、前記保持器は、ポケット部に入れられたころの遊びを規制し、その遊びの規制をもって、前記ころが小径フランジ部側つばを乗り越えられないようになり、保持器と、ころと、軸受内輪との分解が不可能となる。   Generally, a cage (cage type cage) used in a tapered roller bearing is formed in such a manner that the diameter of the cage is expanded in advance from the time of completion of assembly before assembly and the rollers are stored in the respective pocket portions of the cage. By setting the minimum inscribed circle diameter larger than the outer diameter of the flange on the small-diameter flange portion of the bearing inner ring, the bearing inner ring is incorporated. Then, after the cage is incorporated in the bearing inner ring, the small diameter flange portion of the cage is plastically deformed by caulking by pressing a press die from the outside, and the diameter of the cage is contracted. Thereby, the cage regulates the play of the roller put in the pocket portion, and with the regulation of the play, the roller can not get over the flange on the small diameter flange portion, the cage, the roller, Disassembly from the bearing inner ring becomes impossible.

ところで、保持器のポケット部ところとの遊びは、ある程度小さい方が、回転の変化に対して有利であるばかりか、ころの姿勢変化を抑制し、高速回転や音響特性等の点でも効果的に働き、軸受として重要な要素となっている。   By the way, the play with the pocket portion of the cage is not only more advantageous for the rotation change, but also suppresses the posture change of the roller, and is effective in terms of high-speed rotation and acoustic characteristics. It is an important element as a bearing.

また、組立て後に前記保持器の径を収縮させる加締め工程においては、前記ころと前記保持器との物理的な取り合い等の関係により、受側の型を前記保持器の内側より押し付けることができないため、前記保持器の外側からプレス型を押し付け、前記保持器を変形させるのが一般的である。この場合には、保持器の加工精度が低くならざるを得ない。このため、保持器の誤差分を見込み、ポケット部ところとの遊びとなる隙間を予め広く取らなければならず、機能上最適な遊びを塑性変形後に見積もることは難しい。   Further, in the caulking step for shrinking the diameter of the cage after assembly, the receiving mold cannot be pressed from the inside of the cage due to the physical relationship between the roller and the cage. Therefore, it is common to press the press die from the outside of the cage to deform the cage. In this case, the processing accuracy of the cage must be lowered. For this reason, in view of the error of the cage, it is necessary to widen a gap that becomes a play with the pocket portion in advance, and it is difficult to estimate the play that is functionally optimal after plastic deformation.

この対策として、保持器の底孔にテーパー形状の拡径パンチを嵌入させて、小径フランジ部側を正規形状に対し拡径して大径フランジ部側から前記小径フランジ部側に向けて徐々に増径された状態にし、そして保持器が軸受内輪に組込まれた後、前記小径フランジ部と柱部との接続部近傍のみを治具を用いて前記小径フランジ部側の内方に加締めるものが提案されている（例えば、特許文献１参照）。   As a countermeasure, a taper-shaped diameter-enlarged punch is inserted into the bottom hole of the cage, and the diameter of the small-diameter flange portion is increased relative to the normal shape, and gradually from the large-diameter flange portion side toward the small-diameter flange portion side. After the diameter is increased and the cage is assembled in the bearing inner ring, only the vicinity of the connecting portion between the small diameter flange portion and the column portion is crimped inward on the small diameter flange portion side using a jig. Has been proposed (see, for example, Patent Document 1).

さらには、保持器が正規形状に対し大径フランジ部側から小径フランジ部に向けて徐々に増径させられた状態で、前記保持器が軸受内輪に組込まれた後、加締めが小径フランジ部で行われるものも提案されている（例えば、特許文献２参照）。   Furthermore, after the cage is assembled into the bearing inner ring in a state where the diameter of the cage is gradually increased from the large-diameter flange portion side toward the small-diameter flange portion with respect to the regular shape, the caulking is performed on the small-diameter flange portion. (See, for example, Patent Document 2).

他としては、小径フランジ部と、柱部と、大径フランジ部となるＴ字状の突起部とを有する板を予め形成し、前記板を成型装置を用いて円錐台形状にして中間部材を形成した後、前記中間部材の大径フランジ部にリング状のフレームを嵌め込み、前記フレームを加締めることにより保持器を組上げるものが提案されている（例えば、特許文献３参照）。
特開２０００−２６６０６３号公報 特開２００１−５０２８１号公報 独国特許出願公開第１９６０５４７１号明細書 As another example, a plate having a small-diameter flange portion, a column portion, and a T-shaped projection portion that becomes a large-diameter flange portion is formed in advance, and the intermediate member is formed into a truncated cone shape using a molding apparatus. It has been proposed to assemble a cage by fitting a ring-shaped frame into the large-diameter flange portion of the intermediate member and crimping the frame after the formation (see, for example, Patent Document 3).
JP 2000-266063 A Japanese Patent Laid-Open No. 2001-50281 German Patent Application Publication No. 1965471

しかしながら、特許文献１と特許文献２記載の円錐ころ軸受においても、従来と同様に、保持器が軸受内輪に組み付けられる際、塑性変形を伴う加締め加工が用いられているため、寸法精度を安定させることが求められる。   However, in the tapered roller bearings described in Patent Document 1 and Patent Document 2, as in the conventional case, when the cage is assembled to the bearing inner ring, a caulking process involving plastic deformation is used, so that the dimensional accuracy is stable. It is required to make it.

さらには、保持器の組立では、内径の打抜きスクラップが大きく（歩留が悪く）、絞り加工後にころが入るポケット部をインデックスしてあける必要があり、また面押し工程も同時カム成形を行っている。これらの工程はコストが高い上、一工程ずつ加工が行われるため、この点でも寸法精度を安定させることが求められる。   Furthermore, when assembling the cage, the punched scrap of the inner diameter is large (poor yield), and it is necessary to index and open the pocket where the roller enters after drawing, and the surface pressing process is also performed by simultaneous cam forming. Yes. Since these processes are expensive and are processed one by one, it is necessary to stabilize the dimensional accuracy in this respect as well.

また、特許文献３記載の保持器では、Ｔ字状の突起部にリング状のフレームを嵌め込んで大径フランジ部を形成しており、部品点数が増加する。また、前記フレームは肉厚があるため、結果的に大径フランジ部側の肉厚が厚くなってしまう。そのため、前記保持器にころを組み付けた時の変形荷重が大きくなる可能性がある。さらに、大径フランジ部となる前記Ｔ字状の突起部における周方向端部が直線状であるため、前記保持器を円錐台形状にした際には周方向端部でずれが生じやすい構造となっている。   Further, in the cage described in Patent Document 3, a large-diameter flange portion is formed by fitting a ring-shaped frame into a T-shaped protrusion, and the number of parts increases. Moreover, since the said frame has thickness, as a result, the thickness by the side of a large diameter flange part will become thick. Therefore, there is a possibility that the deformation load when the roller is assembled to the cage becomes large. Furthermore, since the circumferential end of the T-shaped protrusion that becomes the large-diameter flange is linear, when the retainer is truncated cone, the circumferential end tends to shift. It has become.

そこで、本発明では、保持器を円錐ころ軸受に組み付ける際の加締め工程を排除し、また円錐ころ軸受の保持器の形状工夫を図り、もって性能や耐久性を向上させたころ軸受及び円錐ころ軸受の製造方法を提供することを目的とする。   Therefore, in the present invention, a roller bearing and a tapered roller that eliminate the caulking step when the cage is assembled to the tapered roller bearing, and improve the shape and shape of the cage of the tapered roller bearing, thereby improving performance and durability. It aims at providing the manufacturing method of a bearing.

本発明の目的は、下記構成により達成される。
（１） 軸受内輪と、軸受外輪と、前記軸受内輪と前記軸受外輪の両軌道面上に複数配置された円錐形状のころと、前記ころを保持すべく小径フランジ部及び大径フランジ部を周方向に設けられた複数の柱部で接続してポケット部を設けた保持器とを有する円錐ころ軸受の製造方法において、前記小径フランジ部と、前記柱部と、前記大径フランジ部となる周方向に分割された複数の円弧状部とを有する板を成型装置を用いて円錐台形状にして前記保持器を形成し、前記軸受内輪の軌道面の所定の位置に前記ころを配置した後、前記保持器のポケット部内に前記ころが入るように前記保持器を前記軸受内輪に小径側から嵌め込み、隣接する前記円弧状部の周方向端部同士を互いに接合させることで、前記保持器、前記ころ、前記軸受内輪を組立てることを特徴とする円錐ころ軸受の製造方法。 The object of the present invention is achieved by the following configurations.
(1) A bearing inner ring, a bearing outer ring, a plurality of conical rollers arranged on both raceway surfaces of the bearing inner ring and the bearing outer ring, and a small-diameter flange portion and a large-diameter flange portion to hold the rollers. In a manufacturing method of a tapered roller bearing having a cage connected by a plurality of column portions provided in a direction and provided with a pocket portion, the small diameter flange portion, the column portion, and a circumference serving as the large diameter flange portion A plate having a plurality of arc-shaped parts divided in a direction is formed into a truncated cone shape using a molding device to form the cage, and after the rollers are arranged at predetermined positions on the raceway surface of the bearing inner ring, The retainer is fitted into the bearing inner ring from the small diameter side so that the roller enters the pocket portion of the retainer, and the circumferential ends of the adjacent arc-shaped portions are joined to each other, thereby the retainer, Assemble the inner ring of the bearing A method for manufacturing a tapered roller bearing.

（２） （１）に記載の円錐ころ軸受の製造方法において、隣接する前記周方向端部同士は軸方向から見て円周方向にオーバーラップした状態で互いに接合されることを特徴とする円錐ころ軸受の製造方法。 (2) In the method for manufacturing a tapered roller bearing according to (1), the adjacent circumferential end portions are joined to each other in a state of being overlapped in the circumferential direction when viewed from the axial direction. A method of manufacturing a roller bearing.

（３） 軸受内輪と、軸受外輪と、前記軸受内輪と前記軸受外輪の両軌道面上に複数配置されたころと、前記ころを保持すべく小径フランジ部及び大径フランジ部を周方向に設けられた複数の柱部で接続してポケット部を設けた保持器とを有するころ軸受において、前記保持器の前記大径フランジ部は隣接する前記柱部間に前記柱部の本数と同数の溶接面を有することを特徴とするころ軸受。 (3) A bearing inner ring, a bearing outer ring, a plurality of rollers arranged on both raceway surfaces of the bearing inner ring and the bearing outer ring, and a small-diameter flange portion and a large-diameter flange portion are provided in the circumferential direction to hold the rollers. In the roller bearing having a cage provided with a pocket portion connected by a plurality of pillar portions, the large-diameter flange portion of the cage is welded in the same number as the number of the pillar portions between the adjacent pillar portions. A roller bearing characterized by having a surface.

（４） （３）に記載のころ軸受において、前記溶接面の少なくとも一部が軸方向に対して交差する面を有することを特徴とするころ軸受。 (4) The roller bearing according to (3), wherein at least a part of the welded surface has a surface intersecting the axial direction.

本発明によれば、円錐ころ軸受の組立ての際、保持器がプレス加工等の成型装置で製造され、円錐状のころと軸受内輪を組み込んだ状態で、前記保持器の円弧状部の周方向端部同士が接合されるため、保持器は寸法精度のよいものとなる。また、保持器を円錐ころ軸受に組み付ける際の加締め工程が排除できるためコスト的に安価にできる。   According to the present invention, when assembling the tapered roller bearing, the cage is manufactured by a molding apparatus such as press working, and the circumferential direction of the arc-shaped portion of the cage is assembled with the conical roller and the bearing inner ring assembled. Since the ends are joined to each other, the cage has good dimensional accuracy. Moreover, since the caulking process when assembling the cage to the tapered roller bearing can be eliminated, the cost can be reduced.

（第１実施形態）
以下、本発明の第１実施形態を図面に基づいて詳細に説明する。図１（ａ）は、本発明の第１実施形態の円錐ころ軸受１０の要部を示した図である。円錐ころ軸受１０は、軸受内輪１１と、軸受内輪１１と同芯に配置される軸受外輪１２と、軸受内輪１１と軸受外輪１２の両軌道面１３ａ，１３ｂ間に複数配置された円錐状のころ１４と、前記ころ１４を保持するポケット部１６が設けられる保持器１７とを具備している。 (First embodiment)
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. Fig.1 (a) is the figure which showed the principal part of the tapered roller bearing 10 of 1st Embodiment of this invention. The tapered roller bearing 10 includes a bearing inner ring 11, a bearing outer ring 12 disposed concentrically with the bearing inner ring 11, and a plurality of conical rollers disposed between both raceway surfaces 13a and 13b of the bearing inner ring 11 and the bearing outer ring 12. 14 and a retainer 17 provided with a pocket portion 16 for holding the roller 14.

保持器１７は、図１（ｂ）に示すように、円錐台形状をしており、小径フランジ部２５及び大径フランジ部２６を周方向に設けられた複数の柱部１５で接続することでポケット部１６を構成する。各柱部１５の内周面には、ころ１４の転動面を案内するころ案内面２２が周方向両側面に亙って形成されている。また、大径フランジ部２６には、隣接する柱部１５間に柱部１５の本数と同数の溶接面１８が形成されている。溶接面１８は、側面視楔状に形成されており、保持器１７の軸方向に対して交差する面となっている。   As shown in FIG. 1B, the cage 17 has a truncated cone shape, and the small diameter flange portion 25 and the large diameter flange portion 26 are connected by a plurality of column portions 15 provided in the circumferential direction. A pocket portion 16 is formed. Roller guide surfaces 22 for guiding the rolling surfaces of the rollers 14 are formed on the inner peripheral surface of each column portion 15 over both side surfaces in the circumferential direction. The large-diameter flange portion 26 is formed with the same number of welding surfaces 18 as the number of the column portions 15 between the adjacent column portions 15. The welding surface 18 is formed in a wedge shape in a side view, and is a surface that intersects the axial direction of the cage 17.

本実施形態では、保持器１７、ころ１４、及び軸受内輪１１を組立てるに先立ち、板状素材から保持器１７を形成する。保持器１７の代表的な加工工程を、図２（ａ）を参照しながら説明する。図２（ａ）に示すように、（１）まず図示しない板状素材より、外径側の一部が開口したポケット部１６、及び大径フランジ部２６となる複数の円弧状部２０の外周面２０ａをプレス等で打抜き、中間素材２１を形成する。これにより、中間素材２１は、小径側フランジ部２５、複数の柱部１５、及び大径フランジ部２６が周方向に分割された複数の円弧状部２０を有し、前記円弧状部２０は柱部１５に対してＬ字状に連結されるとともに周方向端面２４ａ、２４ｂが楔状に形成される。なお、円弧状部２０の周方向の長さの合計は、保持器１７が円錐台形状に形成された際の大径フランジ部２６の寸法にほぼ等しい。また、（１）の工程、即ち打抜き工程においては、ポケット部１６と外周面２０ａとを別々に打抜いても構わない。（２）次に、中間部材２１の柱部１５の周方向両側に、プレス等でころ案内面２２を形成する。（３）さらに、中間部材２１を成型装置である円錐台形状の金型で塑性変形加工を行い、柱部１５と円弧状部２０を引き上げながら円錐台形状にする。これにより、周方向端部２４ａ，２４ｂが互いに噛み合わされる。（４）そして、円錐台形状に形成された中間部材２１の中央部打抜部材１９を小径フランジ部２５が形成されるように縁を残してプレス等で円形状に打抜いて、保持器１５を形成する。なお、（２）の工程と、（３）の工程の手順は、図２（ｂ）に示すように、工程が前後してもよく、また工程は順送工程、単工程のどちらで行っても構わない。以上の工程により、円錐台形状である保持器１７が形成される。   In this embodiment, prior to assembling the cage 17, the rollers 14, and the bearing inner ring 11, the cage 17 is formed from a plate-shaped material. A typical processing step of the cage 17 will be described with reference to FIG. As shown in FIG. 2 (a), (1) the outer periphery of a plurality of arcuate portions 20 that become a pocket portion 16 and a large-diameter flange portion 26 that are partially opened on the outer diameter side from a plate-shaped material (not shown). The surface 20a is punched with a press or the like to form the intermediate material 21. Accordingly, the intermediate material 21 has a small-diameter side flange portion 25, a plurality of pillar portions 15, and a plurality of arc-shaped portions 20 in which the large-diameter flange portion 26 is divided in the circumferential direction. The circumferential end faces 24a and 24b are formed in a wedge shape while being connected to the portion 15 in an L shape. The total circumferential length of the arcuate portion 20 is substantially equal to the size of the large-diameter flange portion 26 when the cage 17 is formed in a truncated cone shape. In the step (1), that is, the punching step, the pocket portion 16 and the outer peripheral surface 20a may be punched separately. (2) Next, roller guide surfaces 22 are formed by pressing or the like on both sides in the circumferential direction of the column portion 15 of the intermediate member 21. (3) Further, the intermediate member 21 is plastically deformed with a frustoconical mold that is a molding apparatus, and the columnar part 15 and the arcuate part 20 are pulled up to form a frustoconical shape. Thereby, circumferential direction edge part 24a, 24b is mutually meshed | engaged. (4) Then, the central punching member 19 of the intermediate member 21 formed in the truncated cone shape is punched into a circular shape with a press or the like leaving a rim so that the small-diameter flange portion 25 is formed. Form. In addition, as shown in FIG.2 (b), the process of (2) process and (3) process may be followed, and a process is performed by either a progressive process or a single process. It doesn't matter. Through the above steps, the cage 17 having a truncated cone shape is formed.

前述した工程すべては、塑性変形を伴う加工で行われるが、これらの工程における保持器１７の寸法精度は成型装置である金型の精度のよるため、安定した寸法精度が得られる。   All the steps described above are performed by processing accompanied by plastic deformation. However, since the dimensional accuracy of the cage 17 in these steps depends on the accuracy of the mold as the molding device, stable dimensional accuracy can be obtained.

次に、図３を参照しながら、上記工程で組立てられた前記保持器１７と、ころ１４及び軸受内輪１１とを組み立てる工程を説明する。予め軸受内輪１１の外径とほぼ同じ径をした円錐形状である組立支持冶具２７に軸受内輪１１をほぼ同芯となるように乗せた後、軸受内輪１１の軌道面１３ａにころ１４を所定の位置に入れ、ころ支持冶具２３を用いころ１４を外側より支持する。なお、ころ支持冶具２３は下方より弾性体２９により支持されるとともに、組立支持冶具２７の外周に外嵌されている。また、ころ支持冶具２３は、図５に示すように、複数のころ１４を外側より支持しやすいように環状部内周面２８がころ１４の形状に合わせ波打った形状となっている。
次の組立工程では、円錐台形状に形成された前記保持器１７を前記軸受内輪１１の小径側により被せる。このとき、前記保持器１７を軌道面１３ａに配置された前記ころ１４に嵌入させるため、前記保持器１７の円弧状部２０が前記ころ１４と前記ころ支持冶具２３の間を通過する際、柱部１５を弾性変形の範囲内で外周方向に開くように変形させ、前記保持器１７の柱部１５に設けられたころ案内面２２がころ１４の転動面と対向するように、前記保持器１７を嵌め込む。これにより、ポケット１６内にころ１４が配置される。また、前記ころ支持冶具２３は前記保持器１７が嵌め込まれる際、前記保持部１７により下方に押し下げられるので、前記軸受内輪１１と、前記保持器１７と、前記ころ１４とで組上げられた組立体を容易に取り出すことができる。
その後、隣接する円弧状部２０の周方向端部２４ａ，２４ｂを合わせＹＡＧレーザ等で溶接して接合することにより、前記軸受内輪１１と、前記保持器１７と、前記ころ１４とを組み立てる。これにより、互いに隣接する円弧状部２０の周方向端部２４ａ、２４ｂは、軸方向から見て円周方向にオーバーラップした状態で接合され、大径フランジ部２６が形成される。 Next, the process of assembling the retainer 17 assembled in the above process, the roller 14 and the bearing inner ring 11 will be described with reference to FIG. The bearing inner ring 11 is placed on a conical assembly support jig 27 having a diameter substantially the same as the outer diameter of the bearing inner ring 11 in advance so as to be substantially concentric, and then a roller 14 is placed on the raceway surface 13a of the bearing inner ring 11 in a predetermined manner. The roller 14 is inserted into the position, and the roller 14 is supported from the outside using the roller support jig 23. The roller support jig 23 is supported by the elastic body 29 from below and is fitted on the outer periphery of the assembly support jig 27. Further, as shown in FIG. 5, the roller support jig 23 has a shape in which the inner peripheral surface 28 of the annular portion is undulated in accordance with the shape of the rollers 14 so that the plurality of rollers 14 can be easily supported from the outside.
In the next assembly process, the cage 17 formed in a truncated cone shape is covered with the small diameter side of the bearing inner ring 11. At this time, when the arcuate portion 20 of the retainer 17 passes between the roller 14 and the roller support jig 23 in order to fit the retainer 17 into the roller 14 disposed on the raceway surface 13a, a column is formed. The cage 15 is deformed so as to open in the outer circumferential direction within the range of elastic deformation, and the cage guide surface 22 provided on the column portion 15 of the cage 17 is opposed to the rolling surface of the roller 14. 17 is inserted. As a result, the rollers 14 are arranged in the pocket 16. Further, when the retainer 17 is fitted, the roller support jig 23 is pushed down by the retainer 17, so that the assembly assembled by the bearing inner ring 11, the retainer 17, and the roller 14 is assembled. Can be easily taken out.
Then, the bearing inner ring 11, the cage 17, and the roller 14 are assembled by joining the circumferential end portions 24a and 24b of the adjacent arcuate portions 20 and welding them together with a YAG laser or the like. As a result, the circumferential end portions 24a and 24b of the arcuate portions 20 adjacent to each other are joined in a state of overlapping in the circumferential direction when viewed from the axial direction, and the large-diameter flange portion 26 is formed.

したがって、本実施形態によれば、保持器１７はプレス加工によって製造され、且つ、軸受内輪１１ところ１４を組込んだ状態で円弧状部２０の周方向端部２４ａ，２４ｂが溶接固定されるので、保持器１７を円錐ころ軸受１０に組み付ける際に加締め加工を行う必要がなく、寸法精度のよい安価な円錐ころ軸受１０を製造することができる。   Therefore, according to the present embodiment, the retainer 17 is manufactured by pressing, and the circumferential ends 24a and 24b of the arcuate portion 20 are welded and fixed in a state where the bearing inner ring 11 and 14 are assembled. In addition, it is not necessary to perform caulking when assembling the cage 17 to the tapered roller bearing 10, and an inexpensive tapered roller bearing 10 with good dimensional accuracy can be manufactured.

また、本実施形態によれば、大径フランジ部２６は、隣接する柱部１５間に柱部１５の本数と同数の溶接面１８を有するので、従来の大径フランジ部をフレームで補強する構成に比べて部品点数を少なくすることができ、安価な円錐ころ軸受１０を製造することができる。   Moreover, according to this embodiment, since the large diameter flange part 26 has the welding surface 18 of the same number as the number of the column parts 15 between the adjacent column parts 15, the structure which reinforces the conventional large diameter flange part with a flame | frame. The number of parts can be reduced compared to the above, and an inexpensive tapered roller bearing 10 can be manufactured.

さらに、本実施形態によれば、板状素材で打ち抜かれた複数の円弧状部２０の互いに隣接する周方向端部２４ａ、２４ｂが軸方向から見て円周方向にオーバーラップするように溶接接合されることで、大径フランジ部２６の溶接面１８の少なくとも一部は、保持器１７の軸方向に対して交差する面を有する。これにより、軸方向にずれを生じることのない精度のよい大径フランジ部２６が形成される。   Furthermore, according to the present embodiment, the welding is performed such that the circumferential end portions 24a and 24b adjacent to each other of the plurality of arc-shaped portions 20 punched with the plate-like material overlap in the circumferential direction when viewed from the axial direction. As a result, at least a part of the welding surface 18 of the large-diameter flange portion 26 has a surface that intersects the axial direction of the cage 17. As a result, the large-diameter flange portion 26 with high accuracy that does not shift in the axial direction is formed.

（第２実施形態）
図４（ａ）は、保持器１７の形成において、保持器１７の円弧状部２０が保持器１７の柱部１５に対しＴ字状に連結された場合の加工工程図である。加工工程の手順は、図３に示した加工工程と同様であるが、図４（ａ）の（１）の工程に示すように、図示しない板状素材より、ポケット部１６、及び円弧状部２０の外周面２０ａをプレス等の成型装置で打抜く際、打抜かれる板状素材は円弧状部２０が柱部１５に対しＴ字状に連結される。即ち、円弧状部２０が柱部１５に対して対称に延出するように形成される。その後、（２）の工程、（３）の工程、及び（４）の工程により、前記保持器１７は円弧状部２０と柱部１５がＴ字状に連結された状態で円錐台形状に形成される。なお、（２）の工程と、（３）の工程の手順は、図４（ｂ）に示すように、工程が前後になってもよく、また工程は順送工程、単工程のどちらで行っても構わない。また、この工程で組立てられた前記保持器ところと軸受内輪とを組立てる工程は、図３で示した工程と同様である（図４参照）。 (Second Embodiment)
FIG. 4A is a processing step diagram in the case where the arcuate portion 20 of the retainer 17 is connected to the column portion 15 of the retainer 17 in a T shape in the formation of the retainer 17. The procedure of the machining process is the same as the machining process shown in FIG. 3, but as shown in the process (1) of FIG. When the outer peripheral surface 20a of 20 is punched by a molding device such as a press, the plate-shaped material to be punched has the arc-shaped portion 20 connected to the column portion 15 in a T-shape. That is, the arcuate portion 20 is formed so as to extend symmetrically with respect to the column portion 15. Thereafter, the cage 17 is formed in a truncated cone shape with the arc-shaped portion 20 and the column portion 15 connected in a T-shape by the steps (2), (3), and (4). Is done. In addition, as shown in FIG. 4B, the procedure of the steps (2) and (3) may be performed before and after the process, and the process is performed by either a progressive process or a single process. It doesn't matter. Further, the process of assembling the cage assembly and the bearing inner ring assembled in this process is the same as the process shown in FIG. 3 (see FIG. 4).

以上で具体的実施形態の説明を終えるが、本発明の様態はこれら実施形態に限られるものではない。例えば、周方向端部２４ａ，２４ｂは図２においては一対の楔状の形状で示しているが、特にその形状である必要はなく、前記周方向端部２４ａ，２４ｂにおいて軸方向でずれが生じづらいように周方向端部２４ａ，２４ｂが軸方向から見て円周方向にオーバーラップする構造であればよく、例えば半円形状や、２対以上あるいは他形状との組合せであってもよい。即ち、溶接面１８の少なくとも一部が軸方向に対して交差する面を有するものであればよい。   This is the end of the description of specific embodiments. However, aspects of the present invention are not limited to these embodiments. For example, although the circumferential end portions 24a and 24b are shown as a pair of wedge shapes in FIG. 2, they do not have to be in particular, and the circumferential end portions 24a and 24b are not easily displaced in the axial direction. Thus, the circumferential end portions 24a and 24b may have a structure that overlaps in the circumferential direction when viewed from the axial direction, and may be, for example, a semicircular shape, a combination of two or more pairs, or other shapes. That is, it suffices if at least a part of the welding surface 18 has a surface intersecting the axial direction.

また、大径側を周方向に分割している円弧状部と柱部は、第１実施形態においてはＬ字状、第２実施形態ではＴ字状に連結されているが、円弧状部が柱部間を連結するものであればよく、例えば円弧状部の一端に偏った中途な位置での連結でもよい。   In addition, the arc-shaped portion and the column portion that divide the large diameter side in the circumferential direction are connected in an L shape in the first embodiment and a T shape in the second embodiment. What is necessary is just to connect between pillar parts, for example, the connection in the middle position biased to the end of an arc-shaped part may be sufficient.

さらに、上述したこれら実施形態は、円錐ころ軸受に本発明を適用したものであるが、同じ様態の保持器を有しているころ軸受であれば適用してもよく、例えば円筒ころ軸受でもよい。   Further, in the above-described embodiments, the present invention is applied to a tapered roller bearing, but any roller bearing having a cage in the same mode may be applied, for example, a cylindrical roller bearing may be used. .

（ａ）は本発明考案による円錐ころ軸受の断面図である。（ｂ）は本発明考案による保持器の立体図である。(A) is sectional drawing of the tapered roller bearing by this invention device. (B) is a three-dimensional view of a cage according to the present invention. （ａ）は第１実施形態における保持器の加工工程図である。（ｂ）は第１実施形態における保持器の別の加工工程図である。(A) is a manufacturing-process figure of the holder | retainer in 1st Embodiment. (B) is another processing-process figure of the holder | retainer in 1st Embodiment. 第１実施形態による軸受内輪、ころ、保持器に係る組立工程図である。It is an assembly process figure concerning a bearing inner ring, a roller, and a cage by a 1st embodiment. （ａ）は第２実施形態における保持器の加工工程図である。（ｂ）は第２実施形態における保持器の別の加工工程図である。(A) is a manufacturing process figure of the holder | retainer in 2nd Embodiment. (B) is another processing-process figure of the holder | retainer in 2nd Embodiment. ころ支持冶具を上方から見た平面図である。It is the top view which looked at the roller support jig from upper direction.

符号の説明Explanation of symbols

１０ 円錐ころ軸受
１１ 軸受内輪
１２ 軸受外輪
１３ａ、１３ｂ 軌道面
１４ ころ
１５ 柱部
１６ ポケット部
１７ 保持器
１８ 溶接面
１９ 中心部打抜部材
２０ 円弧状部
２１ 中間部材
２２ ころ案内面
２３ ころ支持冶具
２４ａ、２４ｂ 周方向端部
２５ 小径フランジ部
２６ 大径フランジ部
２７ 組立支持冶具
２８ 環状部内周面
２９ 弾性体 DESCRIPTION OF SYMBOLS 10 Conical roller bearing 11 Bearing inner ring 12 Bearing outer ring 13a, 13b Raceway surface 14 Roller 15 Column 16 Pocket part 17 Cage 18 Welding surface 19 Center part punching member 20 Arc-shaped part 21 Intermediate member 22 Roller guide surface 23 Roller support jig 24a, 24b circumferential direction end 25 small diameter flange portion 26 large diameter flange portion 27 assembly support jig 28 annular portion inner peripheral surface 29 elastic body

Claims (2)

軸受内輪と、軸受外輪と、前記軸受内輪と前記軸受外輪の両軌道面上に複数配置された円錐形状のころと、前記ころを保持すべく小径フランジ部及び大径フランジ部を周方向に設けられた複数の柱部で接続してポケット部を設けた保持器とを有する円錐ころ軸受の製造方法において、
前記小径フランジ部と、前記柱部と、前記大径フランジ部となる周方向に分割された複数の円弧状部とを有する板を成型装置を用いて円錐台形状にして前記保持器を形成し、
前記軸受内輪の軌道面の所定の位置に前記ころを配置した後、前記保持器のポケット部内に前記ころが入るように前記保持器を前記軸受内輪に小径側から嵌め込み、
隣接する前記円弧状部の周方向端部同士を互いに接合させることで、
前記保持器、前記ころ、前記軸受内輪を組立てることを特徴とする円錐ころ軸受の製造方法。 A bearing inner ring, a bearing outer ring, a plurality of conical rollers arranged on both raceway surfaces of the bearing inner ring and the bearing outer ring, and a small-diameter flange portion and a large-diameter flange portion are provided in the circumferential direction to hold the rollers. In a method of manufacturing a tapered roller bearing having a cage provided with a pocket portion connected by a plurality of pillar portions,
A plate having the small-diameter flange portion, the column portion, and a plurality of arc-shaped portions divided in the circumferential direction to be the large-diameter flange portion is formed into a truncated cone shape using a molding apparatus to form the retainer. ,
After placing the roller at a predetermined position on the raceway surface of the bearing inner ring, the cage is fitted into the bearing inner ring from the small diameter side so that the roller enters the pocket portion of the cage,
By joining the circumferential ends of the adjacent arc-shaped portions to each other,
A method of manufacturing a tapered roller bearing, comprising assembling the cage, the roller, and the bearing inner ring. 請求項１に記載の円錐ころ軸受の製造方法において、
隣接する前記周方向端部同士は軸方向から見て円周方向にオーバーラップした状態で互いに接合されることを特徴とする円錐ころ軸受の製造方法。 In the manufacturing method of the tapered roller bearing according to claim 1,
The manufacturing method of a tapered roller bearing, wherein the adjacent circumferential end portions are joined to each other in a state of being overlapped in the circumferential direction when viewed from the axial direction.
JP2006055165A 2006-03-01 2006-03-01 Method for manufacturing roller bearing and tapered roller bearing Expired - Fee Related JP4811056B2 (en)

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DE102014212076A1 (en) * 2014-06-24 2015-12-24 Aktiebolaget Skf Bearing cage for a roller bearing, in particular for a tapered roller bearing
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CN108555136B (en) * 2018-06-27 2024-06-25 山东朝阳轴承有限公司 Novel replaceable tapered roller bearing riveting die
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