DISC FOR A MULTI-DISC CLUTCH, MULTI-DISC CLUTCH HAVING THE DISC, AND METHOD FOR PRODUCING THE DISC

Abstract

Multi-disc clutches are known which usually have a first clutch pack consisting of steel discs and a second clutch pack consisting of friction discs. A disc for a multi-disc clutch is proposed, which has a disc body. The disc body is in a form of an annular disc, and has a driver contour on its inner circumference and/or outer circumference for mounting the disc in a rotationally fixed manner. The disc body is formed by edgewise rolling on the inner circumference thereof.

Claims

1. A disk for a multiple disk clutch, comprising a disk body, the disk body being configured as an annular disk, and the disk body having, on an inner circumference, a driver contour for fixedly mounting the disk for conjoint rotation, wherein the disk body is formed from vertical edge-rolling on the inner circumference.

2. The disk as claimed in claim 1, wherein the disk body has two end sections which lie opposite one another in a circumferential direction, the two end sections bearing against one another.

3. The disk as claimed in claim 2, wherein the two end sections are connected to one another in the circumferential direction by a joining method.

4. The disk as claimed in claim 1, wherein the two end sections are connected to one another by way of forming.

5. The disk as claimed in claim 1, wherein the driver contour is made in the disk body by a cutting method.

6. The disk as claimed in claim 1, wherein the driver contour is made in the disk body in a manner which is formed by way of precision cutting.

7. The disk as claimed in claim 1, wherein the driver contour has a multiplicity of projections which are distributed uniformly in a circumferential direction and are oriented in a radial direction.

8. The disk as claimed in claim 1, wherein the disk is configured as a friction disk, the disk body having a friction face at least on one side.

9. A multiple disk clutch with a plurality of disks as claimed in claim 1, further comprising a first multiple disk assembly with first disks which have the driver contour on their inner circumference, and by a second multiple disk assembly with second disks which have a driver contour on their outer circumference, the first and second disks of the first and the second multiple disk assembly being arranged behind one another in an alternating manner.

10. A method for producing a disk comprising: providing an elongate metal strip with a first and a second longitudinal edge; vertical edge-rolling the metal strip about a bending axis on one of the two longitudinal edges so as to form a disk body, forming an inner circumference of the disk body, which is defined by way of the longitudinal edge that is worked by way of vertical edge-rolling, and forming an outer circumference of the disk body, which is defined by way of the other longitudinal edge (12a, 12b).

11. The method as claimed in claim 10, wherein after the vertical edge-rolling, two end sections of the metal strip are connected to one another by way of joining.

12. The method as claimed in claim 10, wherein, after the vertical edge-rolling, the driver contour is made in the annular disk body by way of cutting.

13. The disk as claimed in claim 1, wherein the disk body has two end sections which lie opposite one another in a circumferential direction, the two end sections being spaced apart from one another slightly in the circumferential direction.

14. The disk as claimed in claim 2, wherein the two end sections are connected to one another by way of welding.

15. The disk as claimed in claim 1, wherein the driver contour is made in the disk body in a manner which is formed by punching.

16. The disk as claimed in claim 7, wherein the driver contour further has a multiplicity of cutouts which are distributed uniformly in the circumferential direction and are oriented in the radial direction.

17. The disk as claimed in claim 1, wherein the driver contour has a multiplicity of cutouts which are distributed uniformly in a circumferential direction and are oriented in a radial direction.

18. The method as claimed in claim 11, wherein, after the vertical edge-rolling, the driver contour is made in the annular disk body by way of cutting.

19. The method as claimed in claim 11, wherein the end sections are fixedly connected to one another by welding.

20. The method as claimed in claim 10, wherein after the vertical edge-rolling, two end sections of the metal strip are arranged so as to lie opposite one another, but spaced apart from one another slightly to form a gap therebetween.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0029] In the following text, the present disclosure will be described further on the basis of the drawing; further advantages, features and effects can be gathered from the description of the figures, in which:

[0030] FIG. 1 shows an axial view of a disk for a multiple disk clutch as one exemplary arrangement of the disclosure, and

[0031] FIGS. 2a, b show a diagrammatic illustration of a blank of the disk, and a method for producing the blank from FIG. 1.

DETAILED DESCRIPTION

[0032] FIG. 1 shows an axial view in relation to a center axis MA of a disk 1 which is configured and/or suitable, for example, for a multiple disk clutch of a vehicle. The disk 1 has a disk body 2 which is configured as an annular disk. For example, in one exemplary arrangement, the disk body 2 is manufactured from a metallic material, in particular steel.

[0033] The disk body 2 has an inner and an outer circumference 4, 3, the disk body 2 having a driver contour 5 on its inner circumference 4 for attaching the disk 1 fixedly for conjoint rotation. Therefore, in the exemplary arrangement depicted, the disk 1 is configured as an inner disk, it being possible for the disk 1 to be connected via the driver contour 5 fixedly, for example, to a shaft with a corresponding mating contour or with an inner disk carrier for conjoint rotation. The driver contour 5 is formed by way of a multiplicity of cutouts 6 which are made in the disk body 2 spaced apart from one another uniformly in the circumferential direction around the center axis MA. Therefore, a splined joint is formed which has radially inwardly directed teeth. For example, the cutouts 6 are made in the disk body 2 by way of precision cutting or by way of punching.

[0034] The disk body 2 is of interrupted configuration in the circumferential direction around the center axis MA, with the result that a first and a second end section 7a, b are formed. The two end sections 7a, b are arranged so as to lie opposite one another, and together form a tooth of the driver contour 5. For example, the two end sections 7a, b bear against one another in the circulating direction, or are arranged spaced apart from one another slightly. For example, the two end sections 7a, b can be connected fixedly to one another in an integrally joined manner, for example by way of welding or adhesive bonding, or in a positively locking and/or non-positive manner, for example by way of clinching.

[0035] For example, the disk 1 is configured as a friction disk, the disk body 2 having a friction face 9 to this end on its side 8, in particular on the front and/or rear side. The friction face 9 is defined by way of a circular ring face of the annular disk-shaped disk body 2 and/or is arranged on said circular ring face. The friction face 9 therefore extends in relation to the center axis MA in a radial plane. For example, the friction face 9 can be integrated into the disk body 2, grid-like structuring, for example, being made to this end in the side 8 of the disk body 2. As an alternative, however, the friction face 9 can also be formed by way of a friction lining (not shown), the friction lining 9 being arranged on the side 8 of the disk body 2, in particular its circular ring face. For example, the friction lining 9 can be formed by way of a coating.

[0036] The disk body 2 is worked on its inner circumference 4 by way of vertical edge-rolling, with the result that the disk body 2 is reshaped about the center axis MA to form the annular disk. In the following text, a method for producing the disk body 2 by way of vertical edge-rolling will be described in greater detail on the basis of FIGS. 2a, b.

[0037] FIG. 2a diagrammatically shows a perspective illustration of an elongate material strip 10 which forms a blank of the disk 1, from FIG. 1. For example, the material strip 10 is configured as a band-shaped flat steel strip which has an elongate shape in relation to a longitudinal axis LA. In relation to the longitudinal axis LA, the material strip 10 has a first and a second axial end side 11a, b, the first end side 11a forming the first end section 7a, as shown in FIG. 1, and the second end side 11b forming the second end section 7b, as shown in FIG. 1. The two end sides 11a, b are spaced apart from one another by way of a length L in the axial direction in relation to the longitudinal axis LA, and are configured as a rectangular surface. In addition, the material strip 10 has a first and a second longitudinal edge 12a, b, the two longitudinal edges 12a, b being arranged parallel to one another in relation to the longitudinal axis LA, and being spaced apart from one another by way of a width B. Here, the length L of the material strip 10 is multiple times greater than the width B of the material strip 10. The material strip 10 has a front side 13a and a rear side 13b, the front side 13a and the rear side 13b being spaced apart from one another by way of a thickness D. Here, the width B is multiple times greater than the thickness D of the material strip 10.

[0038] As shown in FIG. 2b, the material strip 10 is placed upright in relation to a bending axis BA, the material strip 10 extending to this end with its sides 13a, b in each case in a radial plane of the bending axis BA. For reshaping into the annular disk-shaped disk body 2, the material strip 10 is vertically edge-rolled by way of a rolling tool 14, for example, on its second longitudinal edge 12b, with the result that the two longitudinal edges 12a, b are reshaped with a uniform curvature around the bending axis BA, as is indicated diagrammatically by way of dashed illustration. Here, the first longitudinal edge 12a defines the outer circumference 3, and the second longitudinal edge 12b defines the inner circumference 4, as shown in FIG. 1. The material strip 10 is worked by way of the rolling tool 14 until the two end sides 11a, b or the two end sections 7a, b are reshaped by at least approximately 360° around the bending axis BA, with the result that the annular disk is formed and the bending axis BA defines the center axis MA of the disk body 2.

[0039] Subsequently, the two end sections 7a, b can be connected to one another in a joining method, and the driver contour 5 can be made in the disk body 2 in a cutting method.

[0040] By way of the reshaping of the metal strip 10 by way of vertical edge-rolling, a disk 1 can therefore be manufactured particularly simply, it being possible for waste and therefore the material costs to be reduced considerably in comparison with the punching process which is known from the prior art, 100% of the material which is used can therefore be utilized as a result of the use of vertically edge-rolled material strips 10.