Angular contact roller bearing and method and device for the assembly thereof

Patent metadata

Field	Value
Publication number	US-10598218-B2
Application number	US-201615743696-A
Country	US
Kind code	B2
Filing date	Aug 3, 2016
Priority date	Aug 4, 2015
Publication date	Mar 24, 2020
Grant date	Mar 24, 2020

Abstract

Angular contact roller bearings are disclosed. The bearing may include an inner bearing ring with an inner raceway, which is arranged on the outer shell surface of said inner bearing ring so as to be oblique with respect to the bearing axis of rotation (AL), and comprising a rim which delimits said raceway at its smallest diameter. An outer bearing ring has an outer raceway, which is arranged on the inner shell surface of said outer bearing ring likewise so as to be oblique with respect to the bearing axis of rotation (AL), and a rim which delimits said raceway at its greatest diameter. A multiplicity of roller-type rolling bodies are arranged between the bearing rings and roll on the raceways of said bearing rings and are held with uniform spacings to one another in a circumferential direction by means of a bearing cage.
A tangent to the outer shell surface of the inner bearing ring and a tangent to the inner shell surface of the outer bearing ring are, at least in the region of the raceways, of planar form so as to run in opposite directions obliquely with respect to the bearing axis of rotation (AL). The raceways of the two bearing rings are each formed in conical fashion into said shell surfaces and the rims which are thus formed and which delimit the raceways in each case on one side are thus each formed integrally with the bearing rings.

First claim

The invention claimed is:

1. A method for assembling an angular contact roller bearing, comprising:
an angular contact roller bearing assembled in accordance with an eccentric assembly method for deep-groove ball bearings, the angular contact ball bearing comprising:
an inner bearing ring with an inner raceway, which is arranged on an outer shell surface of said inner bearing ring so as to be oblique with respect to a bearing axis of rotation (AL), and comprising a rim which delimits said inner raceway at its smallest diameter;
an outer bearing ring with an outer raceway, which is arranged on an inner shell surface of said outer bearing ring so as to be oblique with respect to the bearing axis of rotation (AL), and comprising a rim which delimits said outer raceway at its greatest diameter; and
a multiplicity of roller-type rolling bodies which are arranged between the bearing rings and which roll on the raceways of said bearing rings and which are held with uniform spacings to one another in a circumferential direction by a bearing cage;
wherein a tangent to the outer shell surface of the inner bearing ring and a tangent to the inner shell surface of the outer bearing ring are, at least in a region of the raceways, of planar form so as to run in opposite directions obliquely with respect to the bearing axis of rotation (AL);
the raceways of the two bearing rings are each formed in conical fashion into said shell surfaces; and
the rims which are thus formed and which delimit the raceways in each case on one side are thus each formed integrally with the bearing rings;

wherein, in a first step, the inner bearing ring is placed, with its face side formed with the rim, onto a horizontal assembly plane with a convex sickle-shaped auxiliary ramp in such a way that said inner bearing ring bears with its rim against an inner diameter side of the auxiliary ramp.

2. The method as claimed in claim 1 , wherein, in a second step, the outer bearing ring is arranged, with its face side formed with the rim upward, eccentrically with respect to the inner bearing ring such that, at one side, the auxiliary ramp is arranged between the bearing rings and, at the other side, offset 180° with respect to a center of the auxiliary ramp, the bearing rings bear against one another.

3. The method as claimed in claim 2 , wherein in a third step, a sickle-shaped free space formed between the outer bearing ring and the inner bearing ring is filled with the rolling bodies in the form of tapered rollers such that relatively small face sides of said rolling-bodies smiling bodies lie on an oblique side of the auxiliary ramp.

4. The method as claimed in claim 3 , wherein, in a fourth step, the outer bearing ring is clamped, at a level of a contact point with the inner bearing ring and at a level of a point on the outer shell surface of said outer bearing ring which is offset 180° with respect to the contact point, such that the outer bearing ring is slightly ovalized within its elasticity limit.

5. The method as claimed in claim 4 , wherein, in a fifth step, the inner bearing ring is displaced into a coaxial position with respect to the outer bearing ring, and the uniformly circumferentially distributed in their raceways in the bearing rings, with the ovalization of the outer bearing ring being eliminated.

6. The method as claimed in claim 5 , wherein, in a sixth step, the bearing cage in the form of a comb-type cage is inserted with cage webs between the rolling bodies from a side with relatively small face sides of said rolling bodies, and said bearing cage is engaged with detent lugs with detent action against an inner surface of the rim on the inner bearing ring.

7. The method as claimed in claim 5 , wherein, in a sixth step, the bearing cage in the form of a comb-type cage is inserted with cage webs between the rolling bodies from a side with relatively large face sides of said rolling bodies, and said bearing cage is engaged with detent webs with detent action against an inner surface of the rim on the outer bearing ring.

8. A device for carrying out the method as claimed in claim 3 , wherein the auxiliary ramp which bears with its inner diameter side against the inner bearing ring has an oblique side, which tapers toward the outer bearing ring with an angle of inclination of the raceway in the inner bearing ring, and a maximum ramp height (hR) which corresponds to a rim height (hBI) on the inner bearing ring.

9. A method for assembling an angular contact roller bearing, comprising:
an angular contact roller bearing is assembled in accordance with an eccentric assembly method for deep-groove ball bearings, the angular contact ball bearing comprising:
an inner bearing ring with an inner raceway, which is arranged on an outer shell surface of said inner bearing ring so as to be oblique with respect to a bearing axis of rotation (AL), and comprising a rim which delimits said inner raceway at its greatest diameter; and
a multiplicity of roller-type rolling bodies which are arranged between the bearing rings and which roll on the raceways of said bearing rings and which are held with uniform spacings to one another in a circumferential direction by a bearing cage;
wherein a tangent to the outer shell surface of the inner bearing ring and a tangent to the inner shell surface of the outer bearing, ring are, at least in a region of the raceways, of planar form so as to run in opposite directions obliquely with respect to the bearing, axis of rotation (AL),
the raceways of the two bearing rings are each formed in conical fashion into said shell surfaces; and
the rims which are thus formed and which delimit the raceways in each case on one side are thus each formed integrally with the bearings rings;

wherein, in a first step, the outer bearing ring is placed, with its face side formed with the rim, onto a horizontal assembly plane with a convex sickle-shaped auxiliary ramp in such a way that said outer bearing ring bears with its rim against an outer diameter side of the auxiliary ramp.

10. The method as claimed in claim 3 , wherein, in a second step, the inner bearing ring is arranged, with its face side formed with the rim upward, eccentrically with respect to the outer bearing ring such that, at one side, the auxiliary ramp is arranged between the bearing rings and, at the other side, offset 180° with respect to a center of the auxiliary ramp, the bearing rings bear against one another.

11. The method as claimed in claim 10 , wherein, in a third step, a sickle-shaped free space formed between the inner bearing ring and the outer bearing ring is filled with the rolling bodies in the form of tapered rollers such that relatively large face sides of said rolling bodies lie on an oblique side of the auxiliary ramp.

12. A device for carrying out the method as claimed in claim 11 , wherein the auxiliary ramp which bears with its outer diameter side against the outer bearing ring has an oblique side, which tapers toward the inner bearing ring with an angle of inclination of the raceway in the outer bearing ring, and a maximum ramp height (hR) which corresponds to a rim height (hBA) on the outer bearing ring.

13. An angular contact roller bearing comprising:
an inner bearing ring with an inner raceway, which is arranged on an outer shell surface of said inner bearing ring so as to be oblique with respect to a bearing axis of rotation (AL), and comprising a rim which delimits said inner raceway at its smallest diameter;
an outer bearing ring with an outer raceway, which is arranged on an inner shell surface of said outer bearing ring so as to be oblique with respect to the bearing axis of rotation (

Assignees

• Schaeffler Technologies Ag

Inventors

• Eidloth Rainer
• Rumpel Reinhard
• Hofmann Heinrich

Classifications

• F16C33/4605

  Details of interaction of cage and race, e.g. retention or centring · CPC title

• F16C33/366

  Tapered rollers, i.e. rollers generally shaped as truncated cones · CPC title

• F16C19/225

  Details of the ribs supporting the end of the rollers · CPC title

• F16C33/585

  of raceways, e.g. ribs to guide the rollers · CPC title

• F16C19/364 Primary

  with tapered rollers, i.e. rollers having essentially the shape of a truncated cone · CPC title