# US 2019/0168323 A1 · Honing method with cross-grinding for gear wheels

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- Number: US 2019/0168323 A1
- Document ID: US20190168323A1
- Status: Published application
- Kind: A1
- Application number: 16/322,590
- Filed: 2017-07-10
- Published: 2019-06-06
- Earliest claimed: 2016-08-03
- Assignees: Audi AG
- Applicants: Audi AG
- Inventors: Markus HEILMANN; Philipp BURATOWSKI
- Web page: https://patentgrep.com/patent/US20190168323A1

## CPC

- B23F 19/057: {by making use of a tool in the shape of an internal gear}
- B23F 5/163: {the tool and workpiece being in crossed axis arrangement, e.g. skiving, i.e. "Waelzschaelen"}
- B23F 19/05: Honing gear teeth
- B23F 21/03: Honing tools
- B23F: MAKING GEARS OR TOOTHED RACKS (by stamping B21D; by rolling B21H; by forging or pressing B21K; by casting B22; arrangements for copying or controlling B23Q; machines or devices for grinding or polishing, in general B24B)

## Abstract

A method for creating a surface structure on a gear wheel in a honing process, in which at least one honing tool is moved along the gear wheel in a first direction using a first crossed axes angle, and in which, subsequently, the at least one honing tool is moved along the gear wheel in a second direction, opposite to the first direction, using a second crossed axes angle, and in which the first crossed axes angle and the second crossed axes angle are chosen such that first scoring marks produced when the at least one honing tool is moved in the first direction on a surface of the gear wheel at least partially intersect, at a given angle, respective second scoring marks produced when the at least one honing tool is moved in the second direction on the surface of the gear wheel.

## Claims

### Claim at position 1

1-9. (canceled)

### Claim 10

A method for creating a surface structure on a gear wheel in a honing process, comprising:
at least one honing tool is moved along the gear wheel in a first direction using a first crossed axes angle, wherein the at least one honing tool is moved along the gear wheel in a second direction, opposite to the first direction, using a second crossed axes angle, wherein the first crossed axes angle and the second crossed axes angle are chosen such that first scoring marks produced when the at least one honing tool is moved in the first direction on a surface of the gear wheel at least partially intersect, at a given angle, respective second scoring marks produced when the at least one honing tool is moved in the second direction on the surface of the gear wheel.

### Claim 11 (depends on 10)

The method as claimed in claim 10, wherein a gear honing process is chosen as the honing process.

### Claim 12 (depends on 10)

The method as claimed in claim 10, wherein a power honing arrangement is used to move the honing tool along the gear wheel.

### Claim 13 (depends on 10)

The method as claimed in claim 10, wherein the at least one honing tool is designed as a honing ring and is moved radially along the gear wheel.

### Claim 14 (depends on 10)

The method as claimed in claim 10, wherein a cross-grinding is generated on the gear wheel.

### Claim 15 (depends on 10)

The method as claimed in claim 10, wherein the scoring marks are created on an internal toothing or an external toothing of the gear wheel.

### Claim 16

A gear wheel, comprising:
respective teeth of the gear wheel have a surface structure with a number of first scoring marks and a number of second scoring marks, and wherein the number of first scoring marks intersects the number of second scoring marks, at least partly, at a given angle.

### Claim 17 (depends on 16)

The gear wheel as claimed in claim 16, wherein the number of first scoring marks and the number of second scoring marks are arranged in a cross-grinding or cross-hatching pattern.

### Claim 18

A honing machine for the power honing of a gear wheel, comprising:
at least one honing tool and a controller, wherein the controller moves the at least one honing tool in a first direction along the gear wheel, and wherein the controller moves the at least one honing tool in a second direction, opposite to the first direction, along the gear wheel, and wherein the controller adjusts a crossed axes angle between the gear wheel and the at least one honing tool in dependence on a current direction of movement, such that, when the at least one honing tool is moved in the first direction, scoring marks created on a surface of the gear wheel at least partly intersect, at a given angle, respective scoring marks produced on the surface of the gear wheel during a movement of the at least one honing tool in the second direction.