Bearing position with a single row polygonal bearing

Patent metadata

Field	Value
Publication number	US-9360049-B2
Application number	US-201414338878-A
Country	US
Kind code	B2
Filing date	Jul 23, 2014
Priority date	Aug 12, 2013
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

A bearing position for rotatably mounting a shaft or an axle in a housing. The bearing position comprises a rolling bearing, which is designed as a roller bearing, with a bearing ring, which is assigned to the housing, where said bearing ring forms an outer rolling raceway, which faces radially inwards and on which rolling elements are guided, said rolling elements mutually interacting with a shaft, which forms an inner rolling raceway, or with an inner bearing ring. A polygonal bearing is provided as the roller bearing; and said polygonal bearing encloses a bearing ring with at least one elastic section, which forms a transversely convex raceway curvature. This arrangement guarantees that at least one rolling element is supported and guided in a radially prestressed manner without radial clearance on the rolling raceway.

First claim

What is claimed is:

1. A bearing position for rotatably mounting a shaft or an axle in a housing, wherein the bearing position comprises:
a rolling bearing, which is designed as a roller bearing, with an outer bearing ring, which is assigned to the housing, where said outer bearing ring forms an outer rolling raceway, which faces radially inwards and on which rolling elements are guided, said rolling elements mutually interacting with an inner rolling raceway of the shaft or with an inner bearing ring, wherein:
the roller bearing of the bearing position is designed as a polygonal bearing, which encloses at least one of the inner and outer bearing rings with an elastic section which forms a raceway curvature exhibiting a transverse convexity and by means of which at least one rolling element is elastically supported in a radially prestressed manner without radial clearance on the inner rolling raceway or the outer rolling raceway and the outer bearing ring exhibits a deviation of roundness of ≧0.2 mm in the loose state and a deviation from roundness of ≧0.025 mm, measured in a ring gauge made of steel.

2. The bearing position recited in claim 1 , wherein the outer bearing ring or the inner bearing ring of the polygonal bearing comprises at least one section, which is configured so as to be radially elastic and which forms a longitudinal convexity.

3. The bearing position recited in claim 1 , wherein the elastic, transversely convex section of the raceway curvature is supported on the rolling element by means of a flattened contact zone.

4. The bearing position recited in claim 1 , wherein the outer bearing ring comprises a solid edge and on the opposite side a flanged edge as well as on the outside a conicity, where an outer diameter at the flanged edge surpasses an outer diameter at the solid edge.

5. The bearing position recited in claim 1 , wherein at least one edge, a solid edge or a flanged edge, has a profiling in the form of symmetrically distributed punched blanks on a radial inner face.

6. The bearing position recited in claim 1 , wherein the bearing ring provides a chamfer dimension of 1.2±0.5 mm in a transition zone between the outer contour and a solid edge; and a chamfer dimension of 1.5±0.5 mm is provided in a transition zone between the outer contour and a flanged edge.

7. The bearing position recited in claim 1 , wherein the transversely convex raceway curvature of the bearing ring exhibits a raceway linearity of ≧0.015 mm in a loose state; and in a pressed-in state a non-load bearing area, a hill zone, shows a value of ≧0.01 mm; and a load bearing area, a valley zone, shows a value of ≧0.02 mm.

8. The bearing position recited in claim 1 , wherein the bearing position is intended for a steering mount or for a mounting of a converter neck of a torque converter in a transmission.

9. A method for producing and for installing a roller bearing in a bearing position, wherein the bearing position comprises a rolling bearing, which is designed as a roller bearing, with an outer bearing ring, which is assigned to the housing, where said bearing ring forms an outer rolling raceway, which faces radially inwards and on which rolling elements are guided, said rolling elements mutually interacting with an inner rolling raceway of a shaft or with an inner bearing ring, wherein the roller bearing of the bearing position is designed as a polygonal bearing, which encloses at least one of the inner and outer bearing rings with an elastic section which forms a raceway curvature exhibiting a transverse convexity and by means of which at least one rolling element is elastically supported in a radially prestressed manner without radial clearance on the inner rolling raceway or the outer rolling raceway, said method comprising the following steps:
producing the bearing ring by forming a sheet metal strip, where at the same time a solid edge and a profiling are integrally molded on the inner face of the solid edge or a flanged edge;
integrally molding the flanged edges on the bearing ring;
inserting the bearing ring into a die, in order to form a polygonal shape with a deviation from roundness or raceway curvature in section;
heat treating the bearing ring;
assembling a cage with a slit and the rolling elements in the bearing ring to complete the polygonal bearing; and,
pressing the roller bearing as the bearing position into a bore of a housing.

10. A bearing position for rotatably mounting a shaft or an axle in a housing, wherein the bearing position comprises:
a rolling bearing, which is designed as a roller bearing, with an outer bearing ring, which is assigned to the housing, where said outer bearing ring forms an outer rolling raceway, which faces radially inwards and on which rolling elements are guided, said rolling elements mutually interacting with an inner rolling raceway of the shaft or with an inner bearing ring, wherein:
the roller bearing of the bearing position is designed as a polygonal bearing, which encloses at least one of the inner and outer bearing rings with an elastic section which forms a raceway curvature exhibiting a transverse convexity and by means of which at least one rolling element is elastically supported in a radially prestressed manner without radial clearance on the inner rolling raceway or the outer rolling raceway and the outer bearing ring comprises a solid edge and on the opposite side a flanged edge as well as on the outside a conicity, where an outer diameter at the flanged edge surpasses an outer diameter at the solid edge.

11. A bearing position for rotatably mounting a shaft or an axle in a housing, wherein the bearing position comprises:
a rolling bearing, which is designed as a roller bearing, with an outer bearing ring, which is assigned to the housing, where said outer bearing ring forms an outer rolling raceway, which faces radially inwards and on which rolling elements are guided, said rolling elements mutually interacting with an inner rolling raceway of the shaft or with an inner bearing ring, wherein:
the roller bearing of the bearing position is designed as a polygonal bearing, which encloses at least one of the inner and outer bearing rings with an elastic section which forms a raceway curvature exhibiting a transverse convexity and by means of which at least one rolling element is elastically supported in a radially prestressed manner without radial clearance on the inner rolling raceway or the outer rolling raceway and the transversely convex raceway curvature of the bearing ring exhibits a raceway linearity of ≧0.015 mm in a loose state; and in a pressed-in state a non-load bearing area, a hill zone, shows a value of ≧0.01 mm; and a load bearing area, a valley zone, shows a value of ≧0.02 mm.

Assignees

• Schaeffler Technologies Gmbh & Co Kg
• Schaeffler Technologies Ag

Inventors

• Pabst Alexander
• Schoenstein Frank
• Welker Rainer
• Ott Jochen

Classifications

• F16C33/583 Primary

  Details of specific parts of races · CPC title

• F16C19/46

  with one row or needles · CPC title

• F16C25/08

  self-adjusting · CPC title

• F16C35/067

  Fixing them in a housing (with interposition of an element F16C35/07) · CPC title

• F16C33/588

  Races of sheet metal · CPC title