초록 ▼

A bearing ring (160, 260, 310, 410) exhibiting an inner (155, 255) and an outer (140, 240) periphery, also exhibiting a raceway (121, 221) for rolling elements on one of said peripheries, the bearing ring exhibiting a gear structure (131-138, 231-238) on one of said peripheries, as well as exhibitin

A bearing ring (160, 260, 310, 410) exhibiting an inner (155, 255) and an outer (140, 240) periphery, also exhibiting a raceway (121, 221) for rolling elements on one of said peripheries, the bearing ring exhibiting a gear structure (131-138, 231-238) on one of said peripheries, as well as exhibiting at least one welding joint (151, 251). The welding joint has been formed by flash butt welding. Preferably, the gear structure (131-138, 231-238) and/or the raceway (121, 221) have been formed by rolling, machining or a combination thereof.

대표청구항 ▼

1. A method for manufacturing a bearing ring, the method being characterized in that it comprises the following: forming a first gear structure on a first main surface of an elongated steel bar, 0.67%,forming a raceway on a second main surface of the elongated steel bar during the same operation tha

1. A method for manufacturing a bearing ring, the method being characterized in that it comprises the following: forming a first gear structure on a first main surface of an elongated steel bar, 0.67%,forming a raceway on a second main surface of the elongated steel bar during the same operation that the forming of the first gear structure on the first main surface occurs such that the raceway and the first gear structure are formed at the same time, the raceway being configured to receive rolling elements such that the raceway is not engaged with another member that is non rollably positioned thereon, with the second main surface being a surface which is opposite the first main surface,bending the elongated steel bar to form a ring, so that two opposing distal ends of the elongated steel bar meet,joining said two ends of the elongated steel bar to each other by means of flash butt welding to form the bearing ring. 2. The method of claim 1, wherein the step of forming the raceway further comprises the raceway extending entirely across the second main surface of the elongated steel bar in an axial direction which is perpendicular to a direction of elongation of the elongated steel bar. 3. The method of claim 2, wherein the step of forming the raceway further comprises the raceway being arcuate and free of discontinuities in the axial direction. 4. The method of claim 1, according to which the first gear structure is formed to comprise at least one of cogs and helical profiles. 5. The method of claim 4, wherein the flash butt welding is performed between two sequential of the at least one of cogs or helical profiles. 6. A method of forming a bearing ring, comprising: providing an outer ring and an inner ring each formed using the method of claim 1 such that the first gear structure of the outer ring extends radially outwardly and such that the first gear structure of the inner ring extends radially inwardly; andproviding a plurality of rolling members therebetween. 7. The method of claim 6, wherein the step of providing the outer ring and the inner ring further comprises the raceway on the outer ring and the raceway on the inner ring each extending entirely across the second main surface of the elongated steel bar in an axial direction. 8. The method of claim 1, further comprising at least one step selected from a group of fabrication steps, the fabrication steps group consisting of: forming at least one of the raceway and the first gear structure by a process of rolling, andforming at least one of the raceway and the first gear structure by a process of machining. 9. The method of claim 1, wherein the step of bending the elongated steel bar includes: bending the elongated steel bar such that the first gear structure faces outwards from an outer periphery of the ring and the raceway faces inwards from an inner periphery of the ring. 10. The method of claim 1, according to which the elongated steel bar is bent in such a manner that the first gear structure faces inwards from an inner periphery of the ring and the raceway faces outwards from an outer periphery of the ring. 11. A method for manufacturing a bearing ring, the method being characterized in that it comprises the following: forming a first gear structure on a first main surface of each of at least two elongated steel bars, the at least two elongated steel bars each having a carbon content greater than zero point six seven percent (0.67%),forming a raceway on a second main surface of each of the at least two elongated steel bars during the same operation that the forming of the first gear structure on the first main surface occurs such that the raceway and the first gear structure are formed at the same time, the raceway being configured to receive rolling elements such that the raceway is not engaged with another member that is non rollably positioned thereon, with the second main surface being a surface which is opposite the first main surface,bending the at least two elongated steel bars so that they each form ring segments of a ring with a first radius, an inner periphery, and an outer periphery, wherein the first gear structure of each of the at least two elongated steel bars are on the same one of the inner periphery and the outer periphery of the at least two ring segments,joining ends of each of the at least two ring segments to each other by means of flash butt welding, in order to form the bearing ring with said first radius. 12. The method of claim 11, further comprising at least one step selected from a group of fabrication steps, the fabrication steps group consisting of: forming at least one of the raceway and the first gear structure by a process of rolling, andforming at least one of the raceway and the first gear structure by a process of machining. 13. The method of claim 11, according to which the first gear structures are formed to comprise at least one of cogs and helical profiles.