Disc clutch, disc for such a disc clutch, method for manufacturing such a disc clutch or disc

Abstract

The invention relates to a disc clutch comprising a first disc set (32) which is rotationally fixed to a first disc carrier (18) and a second disc set (42) which is rotationally fixed to a second disc carrier (24), wherein the discs (34 to 40, 46 to 52) of the two disc sets (32, 42) can be frictionally engaged with one another via friction surfaces (54, 56), wherein recesses and / or grooves are provided in at least one or more friction surfaces (54, 56) of the discs (34 to 40; 46 to 52) of the first and / or second disc set (32; 42). Thereby a first type of recesses and / or grooves (68) is provided which are produced by a first manufacturing method of material forming and / or material casting and / or non-material removal and a second type of recesses and / or grooves (70) which are produced by a second manufacturing method of material removal. Furthermore, the invention relates to a disc (66) for such a disc clutch and a method of manufacturing such a disc clutch (2) and such a disc (66).

Description

[0001] This application is a divisional application of patent application No. 201880044589.1, filed on May 17, 2018, entitled "Disc clutch, disc for such disc clutch, method for manufacturing such disc clutch or disc". Technical Field

[0002] This invention relates to a disc clutch comprising: a first disc assembly rotatably connected to a first disc carrier; and a second disc assembly rotatably connected to a second disc carrier, wherein the discs in the two disc assemblies can be frictionally engaged with each other via friction surfaces, wherein recesses and / or grooves are provided in at least one or more friction surfaces of the discs in the first and / or second disc assemblies. Furthermore, this invention relates to a disc having friction surfaces in which recesses and / or grooves are provided. Additionally, this invention relates to a method for manufacturing such a disc clutch or disc. Background Technology

[0003] Disc clutches, particularly wet-operation disc clutches, are known in practice. Therefore, a known disc clutch has a first disc assembly and a second disc assembly, the first disc assembly being rotatably connected to a first disc carrier, and the second disc assembly being rotatably connected to a second disc carrier. The discs of the two assemblies are typically arranged alternately so that they can engage each other frictionally via friction surfaces facing each other. In a wet-operation disc clutch, a so-called drag torque is generated when the clutch is disengaged. This drag torque can be traced back to the fluid flowing between the friction surfaces, such as coolant or lubricant, and should be as small as possible. Furthermore, the coefficient of friction, which is at play when the clutch is disengaged, plays a decisive role in the frictional and operational performance of the disc clutch. To influence both, particularly to reduce the drag torque, recesses and / or grooves are provided in at least one or more friction surfaces of the discs in the first and / or second disc assemblies. Thus, an attempt is made to specifically influence or optimally adjust the drag torque and coefficient of friction using specific dimensions and shapes of the recesses and / or grooves within the friction surfaces. The durability of the individual discs should also be increased by the corresponding dimensions and shapes of the recesses and / or grooves within the friction surfaces. However, it has been shown that the listed features are affected only to a limited extent by the size and / or shape of the recesses and / or grooves within the friction surface. Summary of the Invention

[0004] One object of the present invention is to improve the type of disc clutch in such a way that the coefficient of friction and resistance torque can be specifically influenced or adjusted regardless of the corresponding shape or size of the recesses and / or grooves within the friction surfaces. Furthermore, a fundamental object of the present invention is to create a disc that is advantageous to such a disc clutch. Additionally, an object of the present invention includes specifying an advantageous method for manufacturing such a disc clutch and such a disc.

[0005] This problem is solved by the features listed in claims 1, 8, 9, or 10 of the patent. Advantageous embodiments of the invention are the subject of the dependent claims.

[0006] The disc clutch according to the invention is preferably a wet-operation disc clutch, and particularly preferably designed as a hydraulically actuated disc clutch. The disc clutch has a first disc assembly, for example, an assembly made of outer or inner discs, rotatably connected to a first disc carrier, for example, an outer or inner disc carrier. Additionally, the disc clutch has a second disc assembly, for example, an assembly made of inner or outer discs, rotatably connected to a second disc carrier, for example, an outer or inner disc carrier. The discs are preferably displaceably arranged on corresponding disc carriers, and particularly preferably, the discs alternately follow each other in the axial direction. In each case, the discs are arranged such that the discs in the two disc assemblies can frictionally engage with each other via their friction surfaces. Recesses and / or grooves are provided in at least one or more friction surfaces of the discs in the first and / or second disc assemblies. Thus, for example, recesses and / or grooves may be provided only in the discs of one disc assembly, while no recesses and / or grooves are provided in the friction surfaces of the other disc assembly. However, corresponding recesses and / or grooves can also be provided on the friction surfaces of the discs in the first disc group and on the friction surfaces of the disc group in the second disc group. The latter is particularly advantageous for the discs in the first and second disc groups, each disc having a friction lining on one side. The recesses and / or grooves in at least one or more friction surfaces of the discs in the first and / or second disc groups thus include at least two different types of recesses and / or grooves. Therefore, a first type of recess and / or groove is produced by a first manufacturing method of material forming and / or material casting and / or non-material removal, while a second type of recess and / or groove is produced by a second manufacturing method of material removal. It has been shown that if the ratio between the number of first-type recesses and / or grooves and the number of second-type recesses and / or grooves is varied, two disc groups identical in shape and size may have achieved significantly different drag torques and coefficients of friction, as well as different durability. For example, if the number of first-type recesses and / or grooves is increased and the number of second-type recesses and / or grooves is decreased, a reduction in drag torque can be achieved. This also has a positive impact on the durability of the disc clutch or its discs. In contrast, increasing the number of second-type recesses and / or grooves while decreasing the number of first-type recesses and / or grooves results in a higher coefficient of friction, thus improving the friction ratio. Therefore, a disc clutch is created whose coefficient of friction and resistance torque are specifically adjusted and, if desired, can be improved by recesses and / or grooves produced in different ways.

[0007] As previously described, the first type of recesses and / or grooves are formed by material forming and / or material casting, such that no material is removed. Therefore, material forming or casting can be performed, for example, in a manner where the corresponding friction lining has already been formed or cast on the corresponding disc. In a preferred embodiment of the disc clutch according to the invention, the first type of recesses and / or grooves are produced by stamping, particularly because this allows for the rapid and simple manufacture of the first type of recesses and / or grooves, wherein the corresponding recesses and / or grooves can be manufactured with exceptional precision and without major post-processing. In the case where one of the friction linings forms a friction surface, stamping can be performed additionally while the friction lining is being applied to the disc.

[0008] As previously explained, the second type of recesses and / or grooves are produced by a second manufacturing method involving the removal of material. Manufacturing methods that chemically remove material may also be included. However, in order to provide second-type recesses and / or grooves of particularly precise shape and size (which perform the desired operational behavior in a targeted manner), in another preferred embodiment of the disc clutch according to the invention, the second type of recesses and / or grooves are produced by a mechanical manufacturing method. Therefore, the second type of recesses and / or grooves can be produced, for example, by grinding, which is particularly preferred in this embodiment if the second type of recesses and / or grooves are produced by milling.

[0009] In an advantageous embodiment of the disc clutch according to the invention, the depth of the first type of recesses and / or grooves is less than the depth of the second type of recesses and / or grooves. It has been shown that this improves the overall durability of the disc clutch, particularly because, at the corresponding depth, the first type of recesses and / or grooves, formed by material molding and produced by a second manufacturing method involving material removal, can lead to earlier component failure compared to the second type of recesses and / or grooves. This is especially true if the corresponding friction surfaces are formed from friction linings, which tend to detach from the disc or the friction lining carrier of the disc due to the large amount of material molding.

[0010] In another advantageous embodiment of the disc clutch according to the invention, the friction surface or multiple friction surfaces are formed by friction linings fixed to a friction lining carrier. The friction linings are preferably paper friction linings. In this context, it has proven advantageous to glue the friction linings to the friction lining carrier. Specifically, paper friction linings can be relatively easily processed by a first manufacturing method and also by a second manufacturing method to create first-type recesses and / or grooves and second-type recesses and / or grooves, thereby significantly simplifying the production of the disc clutch.

[0011] In a particularly advantageous embodiment of the disc clutch according to the invention, the friction lining is segmentally fastened to or glued to a friction lining carrier. On the one hand, this achieves material-saving application of the friction lining, particularly paper friction lining. On the other hand, it allows for the creation of intermediate third-type recesses and / or grooves between corresponding friction lining segments, eliminating the need for these recesses and / or grooves to be produced by the first or second manufacturing methods listed. In particular, since the third-type recesses and / or grooves can be formed by the friction lining carrier itself, the segmented friction lining with intermediate third-type recesses and / or grooves also allows for relatively simple grooves to be achieved with maximum groove depth. In this embodiment, it is also preferred that the third-type recesses and / or grooves extend from the inner edge to the outer edge of the friction surface.

[0012] In a particularly preferred embodiment of the disc clutch according to the invention, the discs in the first disc group have friction surfaces including recesses and / or grooves on both sides, while the discs in the second disc group have friction surfaces without recesses and / or grooves. Therefore, the discs in the second disc group can be designed, for example, discs without friction linings or discs made of steel. In contrast, the discs in the first disc group can be designed with friction linings on both sides.

[0013] In another advantageous embodiment of the disc clutch according to the invention (an alternative to the foregoing embodiment), both the discs in the first disc group and the discs in the second disc group have a first friction surface with notches and / or grooves and a second friction surface opposite to the first friction surface without notches and / or grooves. Therefore, the discs in the first and second disc groups can be, for example, discs with friction linings provided on one side, wherein notches and / or grooves are then preferably provided in the friction linings.

[0014] In another particularly advantageous embodiment of the disc clutch according to the invention, at least one of the discs has both a first type of recess and / or groove and a second type of recess and / or groove. This simplifies the assembly of the disc clutch, especially because it eliminates the need to distinguish between discs having only the first type of recess and / or groove and discs having only the second type of recess and / or groove, particularly since these recesses and / or grooves are identical in shape and size, which would otherwise be difficult to distinguish.

[0015] Based on the foregoing embodiments, in another advantageous embodiment of the disc clutch according to the invention, both a first type of recess and / or groove and a second type of recess and / or groove are provided in one or more friction surfaces of the at least one disc. In this case, the two friction surfaces preferably refer to friction surfaces provided on mutually opposite sides of the disc.

[0016] As an alternative to the two embodiments described above, in another preferred embodiment of the disc clutch according to the invention, at least one of the discs has a first type of recess and / or groove, but no second type of recess and / or groove, while at least another disc has a second type of recess and / or groove, but no first type of recess and / or groove. Because the first type of recess and / or groove and the second type of recess and / or groove are produced by fundamentally different manufacturing methods, the manufacturing of the disc for the disc clutch is simplified, particularly since the disc with the first type of recess and / or groove and the disc with the second type of recess and / or groove can be manufactured, for example, simultaneously and / or separately from each other at different processing stations.

[0017] The disc according to the invention is envisioned for use in a disc clutch, particularly in one embodiment of a disc clutch according to the invention. Therefore, the disc has at least one friction surface. Preferably, two friction surfaces are thus provided, formed on opposite sides of the disc. In at least one friction surface, a first type of recess and / or groove is provided, produced by a first manufacturing method of material forming and / or material casting and / or non-material removal, and a second type of recess and / or groove is provided, produced by a second manufacturing method of material removal, preferably by a mechanical manufacturing method, particularly preferably by milling. Regarding the advantages of the disc and other embodiment variations, reference is made to the foregoing advantages and embodiment variations of the disc clutch, which are correspondingly applied to the disc according to the invention.

[0018] The method for manufacturing a disc clutch according to the invention, preferably a disc clutch of the aforementioned type according to the invention, has method steps described in more detail below. Thus, a disc is initially provided. The disc is preferably a disc in a first disc group connectable to a first disc carrier, and a disc in a second disc group connectable to a second disc carrier, wherein these two disc carriers form disc carriers assigned to each other for each disc clutch. Thus, the disc in the first disc group can be an outer or inner disc, while the disc in the second disc group can be an inner or outer disc. Subsequently, a first type of recess and / or groove is produced in the friction surface of at least one of the discs by a first manufacturing method of material forming or material casting and / or non-material removal. Additionally, a second type of recess and / or groove is produced by a second manufacturing method of material removal, preferably by a mechanical manufacturing method, particularly preferably by milling in the friction surface of the same disc and / or in the friction surface of at least one other disc. After producing the first and second types of recesses and / or grooves in the corresponding friction surfaces, disc groups are assembled from these discs, wherein the discs also include discs having grooves and / or notches. Therefore, a disc assembly that can be connected to a disc carrier of a disc clutch was created to facilitate the production of disc clutches.

[0019] In an advantageous embodiment of the method according to the invention, the discs in the first disc group are connected to the first disc carrier in such a way that their friction surfaces can rub against each other, and the discs in the second disc group are connected to the second disc carrier of the disc clutch in such a way.

[0020] Regarding another embodiment of the method for producing a disc clutch, referring to the previously described embodiments of the disc clutch itself, additional embodiment variations of the method for producing a disc clutch will thus be clear and readily apparent to those skilled in the art.

[0021] The method for producing a disc according to the invention has method steps described in more detail below. Thus, firstly, the disc is provided with friction surfaces, preferably two friction surfaces on opposite sides of the disc. Subsequently, a first type of recess and / or groove is produced in at least one friction surface of the disc by a first manufacturing method of material forming and / or material casting and / or non-material removal. Additionally, a second type of recess and / or groove is produced in at least one friction surface of the disc by a second manufacturing method of material removal, preferably by a mechanical manufacturing method, and particularly preferably by milling.

[0022] Regarding the advantages of the method for producing discs according to the invention and variations of other embodiments, additional variations of the method for producing discs will become clear and readily apparent to those skilled in the art, with reference to the previous description of disc clutches and discs of the type according to the invention.

[0023] In a preferred embodiment of the method for manufacturing a disc according to the invention, providing the disc includes providing a friction liner carrier and fixing the friction liner, and if necessary, a paper friction liner, to the friction liner carrier to form at least one friction surface. Therefore, fixing the friction liner is preferably performed by gluing.

[0024] In a particularly preferred embodiment of the method for manufacturing a disc according to the invention, fixing the friction liner to the friction liner carrier is performed simultaneously with the generation of the first type of groove. Thus, the friction liner can be pressed against the friction liner carrier, for example by means of a stamping part having a predefined profile that is pressed into the friction surface of the friction liner. Attached Figure Description

[0025] The invention will then be explained in more detail with reference to the accompanying drawings and exemplary embodiments. In the drawings: Figure 1 A partial side view of the disc clutch in the first embodiment is shown in sectional view. Figure 2A partial side view of the disc clutch in the second embodiment is shown in sectional view. Figure 3 It shows that according to Figure 1 and 2 A front view of a first embodiment variant of a disc clutch, with the disc in the direction of arrow A. Figure 4 It shows that according to Figure 1 and 2 A front view of a second embodiment variant of a disc clutch, with the disc in the direction of arrow A. Figure 5 It shows that according to Figure 1 and 2 A front view of a third embodiment of a variation of the disc in a disc clutch. Detailed Implementation

[0026] Figure 1 A disc clutch 2 is shown, which is designed to operate wet, and even when... Figure 1 The corresponding actuating piston or actuating element is omitted in the illustration, and the disc clutch can also be hydraulically actuated. In the accompanying drawings, the opposite axial directions 4, 6, opposite radial directions 8, 10, and opposite circumferential directions 12, 14 of the disc clutch 2 are indicated by corresponding arrows, wherein the disc clutch 2 can rotate about a rotation axis 16 extending along the axial directions 4, 6 in the circumferential directions 12, 14.

[0027] The disc clutch 2 has a first disc carrier 18, which is designed as an inner disc carrier. The first disc carrier 18 has a first disc carrier portion 20 extending in axial directions 4 and 6, and is provided with a first rotary drive profile 22 in the radial direction 8, the first rotary drive profile facing outward and extending in circumferential directions 12 and 14. A second disc carrier 24, separately assigned to the first disc carrier 18, is designed as an outer disc carrier in this case and has a second disc carrier portion 26 extending substantially in axial directions 4 and 6 and nested with the first disc carrier portion 20 in radial directions 8 and 10. The second disc carrier portion 26 has a second rotary drive profile 28 extending in circumferential directions 12 and 14 and facing inward in the radial direction 10. The two rotary drive profiles 22 and 28 are preferably designed as serrated.

[0028] Disc assembly 30 is arranged radially between two disc support portions 20 and 26 in the directions 8 and 10. Disc assembly 30 has a first disc assembly 32, in which discs 34 to 40 are designed as inner discs and are rotatably connected and fixed to the first disc support portion 20; however, they are displaceable relative to the first disc support portion 18 in the axial directions 4 and 6. Disc assembly 30 also has a second disc assembly 42, in which discs 44 to 52 are designed as outer discs and are rotatably connected and fixed to the second rotary drive profile 28, wherein discs 44 to 52 are displaceable relative to the second disc support portion 24 in the axial directions 4 and 6. The discs 34 to 40 in the first disc assembly 32 and the discs 44 to 52 in the second disc assembly 42 are arranged in an alternating manner in the axial directions 4 and 6. Therefore, each of the disks in the two disk assemblies 32 and 42 has a first friction surface 54 facing the axial direction 4 and a second friction surface 56 facing the axial direction 6, wherein the friction surfaces 54 and 56 are formed as friction surfaces 54 and 56 extending generally in the circumferential directions 12 and 14, and thus can also be designated as generally annular friction surfaces 54 and 56. It should also be noted that the two end disks (in this case, disks 44 and 52) have only friction surface 56 or friction surface 54, particularly since the surface of disk 44 facing the axial direction 4 and the side of end disk 52 facing the axial direction 6 cannot frictionally engage with the other disk. Typically, when the disk assemblies 30 are pressed together or compressed in the axial directions 4 and 6, the disks 34 to 40 in the first disk assembly 32 and the disks 44 to 52 in the second disk assembly 42 can frictionally engage with each other via the friction surfaces 54 and 56 facing each other.

[0029] According to Figure 1 In the embodiment, disks 34 to 40 in the first disk group 32 are designed as friction liner disks, more specifically, disks 34 to 40 are designed with friction liners on both sides. Thus, each of disks 34 to 40 has a generally annular friction liner carrier 58, wherein a first friction liner 60 is fixed to the side of the friction liner carrier 58 facing the axial direction 4 to form a first friction surface 54, and a second friction liner 62 is fixed to the side of the friction liner carrier 58 facing the axial direction 6 to form a second friction surface 56. These two friction liners 60 and 62 are paper friction liners, which are additionally glued to the friction liner carrier 58. The friction liners 60 and 62 are thus segmentally fixed to the friction liner carrier 58, which will be explained in more detail later. In contrast, disks 44 to 52 in the second disk group 42 are designed as disks without friction liners and / or are designed as steel disks. In the first disc group 32, the friction surfaces 54 and 56 of discs 34 to 40 are provided with recesses and / or grooves, while in the second disc group 42, the friction surfaces 54 and 56 of discs 44 to 52 are not provided with recesses and / or grooves.

[0030] Before explaining in more detail the aforementioned recesses and / or grooves in the friction surfaces 54 and 56, it should be explained that according to Figure 2 The structure of the second embodiment of the disc clutch 2. Figure 2 The second embodiment is basically the same as that according to Figure 1 The embodiments correspond to each other, so that only the differences should be addressed thereafter; the same reference numerals are used for the same or similar parts, and the foregoing description generally applies accordingly.

[0031] Compared to the first embodiment, the disks 34 to 40 in the first disk group 32 only have the aforementioned first friction lining 60, which forms a first friction surface 54 facing the axial direction 4, while the second friction surface 56 facing the axial direction 6 is itself formed by the friction lining support 58. Therefore, the disks 34 to 40 in the first disk group 32 are disks 34 to 40 with a friction lining 60 on one side. This correspondingly applies to the disks 46 to 52 in the second disk group 42, which are also formed as disks with a friction lining 62 on one side, and thus have a friction lining support 58, which, on its side facing the axial direction 4, fixes the friction lining 62 to form the first friction surface 54 in the aforementioned manner, while the second friction surface 56 of the disks 44 to 50 facing the axial direction 5 is formed by the friction lining support 58. However, the end disk 44 can again be a disk without a friction lining or a steel disk, so the side of the end disk 44 facing the axial direction 4 cannot frictionally engage with the disks in the first disk group 32. Therefore, according to... Figure 2 In the second embodiment, the recesses and / or grooves are formed in both disks 34 to 40 in the first disk group 32 and disks 46 to 52 in the second disk group 42, wherein the recesses and / or grooves are generally formed in the first friction surface 54 formed by the respective friction pads 62, while no grooves and / or notches are provided in the second friction surface 56.

[0032] Then refer to Figures 3 to 5 Description is used to determine Figure 1 and / or Figure 2 A variation of the disc in the disc clutch 2 embodiment. According to... Figure 1 In the case of the disc clutch 2, the structure of at least one or at least two discs in the first disc group 32 is thus described, wherein the embodiment may be related either only to the first friction surface 54 or to both the first friction surface 54 and the second friction surface 56 of the discs 34 to 40 in the first disc group 32. According to Figure 2 In the second embodiment of the disc clutch 2, subsequent embodiments relate to at least one or both of discs 34 to 40 in the first disc group 32 and / or to at least one or both of discs 46 to 52 in the second disc group 42. Also refer to the following fact: regarding... Figure 2 Disc clutch 2, Figures 3 to 5 The inner disc is shown; however, subsequent embodiments are applied in a relative manner to at least one of discs 46 to 52 in the second disc group 42, the only difference being that, instead of Figures 3 to 5 The inner serrations shown are that outer serrations will be provided on each disk 46 to 52 so that these disks can be rotary driven connected to the second rotary drive profile 28 on the second disk support portion 26.

[0033] Figure 3 A first embodiment of disk 66 is shown, wherein Figure 1 At least one of disks 34 to 40 in the first group 32 of the first group or Figure 2At least one of the disks 34 to 40 and / or at least one of the disks 46 to 52 in the first disk group 32 is designed as disk 66. A first friction surface 54 is formed of a friction liner 60, which is fixed to the side of the friction liner carrier 58 facing the axial direction 4 in a manner previously described, wherein the first friction surface 54 is designed to extend substantially in the circumferential directions 12, 14. A first type of recess and / or groove 68 is provided in the first friction surface 54. The first type of recess and / or groove 68 (preferably formed with a groove pattern in a grid or honeycomb shape) is produced by a material forming first manufacturing method rather than a material removal manufacturing method. Preferably, the first type of recess and / or groove 68 is produced by stamping. Thus, the first type of recess and / or groove 68 can be produced, for example, simultaneously with gluing the friction liner 60 to the friction liner carrier 58; however, the first type of recess and / or groove 68 can also be stamped after the friction liner 60 has been fixed to the friction liner carrier 58. Alternatively, the first manufacturing method may also be a material casting first manufacturing method, wherein the provided friction lining 60 has been provided with first-type recesses and / or grooves 68 during its production. Additionally, the first friction surface 54 has second-type recesses and / or grooves 70. The second-type recesses and / or grooves 70 again form a groove pattern, which is formed as a grid or honeycomb shape and substantially corresponds in size to the groove pattern of the first-type recesses and / or grooves 68. Thus, the first-type recesses and / or grooves 68 and the second-type recesses and / or grooves 70 alternately follow each other in the circumferential directions 12, 14. Although optionally or additionally, the first-type recesses and / or grooves 68 and the second-type recesses and / or grooves 70 may also substantially follow each other in the radial directions 8, 10, the depicted embodiment has the advantage of simplified production. Compared to the first-type recesses and / or grooves 68, the second-type recesses and / or grooves 70 are produced by a material removal second manufacturing method. Essentially, this can be any material removal manufacturing method; however, if it is a mechanical manufacturing method, such as grinding, it is preferred, especially if the second type of recess and / or groove 70 is produced by milling. Even in Figure 3 It is not obvious in the middle, and the depth of the first type of recess and / or groove 68 is also smaller than the depth of the second type of recess and / or groove 70.

[0034] According to Figure 1 In the disc clutch 2, discs 34 to 40 in the first disc group 32 are therefore provided with friction surfaces 54 and 56 on both sides, the friction surfaces having a first type of recess and / or groove 68 and a second type of groove and / or friction surface 70, while discs 44 to 52 in the second disc group 42 do not have grooves and / or recesses in their friction surfaces 54, 56. In contrast, according to Figure 2 In the case of the disc clutch 2, at least one of the discs 34 to 40 and 46 to 52 has recesses and / or grooves 68, 70 of the first friction surface 54 of the first type, while no recesses and / or grooves are provided in the first friction surface 54 opposite to the second friction surface 56. Similarly, from the case of... Figure 3 As is evident from the previous description of disk 66, at least one disk 34 to 40 and 46 to 52 has both a first type of recess and / or groove 68 and a second type of recess and / or groove 70, wherein both the first type of recess and / or groove 68 and the second type of recess and / or groove 70 are provided in one or both friction surfaces 54, 56.

[0035] As previously mentioned, the friction lining 60 is segmentally fixed to the friction lining carrier 58. This is accomplished by creating intermediate third-type recesses and / or grooves 72, which are formed between the friction lining segments 74 of the friction lining 60 and, in the depicted embodiment, extend from an inner edge 76 facing inward in the radial direction 10 to an outer edge 78 facing outward in the radial direction 8, wherein the third-type recesses and / or grooves 72 are not only formed continuously but also have groove bottoms formed by the friction lining carrier 58.

[0036] Figure 4 and 5 Two additional embodiment variations of disk 66 are shown, which are substantially the same as those according to... Figure 3 The embodiments correspond to each other, so that only the differences should be addressed subsequently; the same reference numerals are used for the same or similar parts, and the foregoing description generally applies accordingly. According to another embodiment of the disc clutch 2, in accordance with Figure 1 Implementation examples and according to Figure 2 In the embodiments, according to Figure 4 and 5 Two embodiments. For those based on... Figure 1 The disc clutch 2, which means that at least one of discs 34 to 40 is engaged with... Figure 4 The design uses a 66-fold disk layout, and Figure 1 The other one in the 34 to 40 of the plates. Figure 5 The design is based on the 66-disc method. Figure 2 In the case of disc clutch 2, at least one of discs 34 to 40 and 46 to 52 is used Figure 4 The design uses a 66-fold arrangement, while at least one of the 34 to 40 and 46 to 52 folds is... Figure 5 The design is based on the 66-disc method.

[0037] According to Figure 3 Compared to disk 66, based on Figure 4 In disc 66, only the first type of recess and / or groove 68 is provided, while the second type of recess and / or groove 70 is not provided. In contrast, according to Figure 5 In disc 66, only the second type of recess and / or groove 70 is provided, while the first type of recess and / or groove 68 is not provided. For according to Figure 4 The disc 66 has the following advantages: the disc 66, or the first type of recess and / or groove 68 disposed therein, only needs to be manufactured by a first manufacturing method of material forming, while for those according to Figure 5 The disc 66 has the following advantages: the disc, or the second type of recess and / or groove 70 disposed therein, can be produced solely by a second manufacturing method involving material removal, allowing them to be manufactured separately from each other but simultaneously at different processing stations. Figure 4 The disk 66 and according to Figure 5 Disk 66.

[0038] For production Figure 1 and 2 The method of disc clutch 2 has been from Figures 1 to 5 As previously described, the corresponding production method will only be briefly explained again below.

[0039] In the context of the production method, firstly, discs 34 to 40 in the first disc group 32 and discs 44 to 52 in the second disc group 42 are provided. According to... Figure 1 In the case of disks 34 to 40 in the first disk group 32 and in accordance with Figure 2 In the case of discs 34 to 40 and 46 to 52 in two disc groups 32 and 42, the discs are arranged by providing corresponding friction liner carriers 58 and fixing friction liners 60, 62 in the form of paper friction liners onto the friction liner carriers 58 while simultaneously forming corresponding friction surfaces 54, 56. Furthermore, a first type of recess and / or groove 68 is produced by a first manufacturing method of material forming and / or material casting and / or non-material removal, preferably by stamping in the friction surface of at least one of the discs. Therefore, it is preferable that fixing or gluing is performed simultaneously with the production of the first type of recess and / or groove 68. Additionally, a second type of recess and / or groove 70 is produced by a second manufacturing method of material removal, preferably by a mechanical manufacturing method, particularly preferably by milling in the corresponding friction surface of at least one disc and / or in the friction surface of at least another disc.

[0040] Subsequently, disk assembly 30 is compiled from disks including disks with grooves and / or recesses, such as Figure 1 or Figure 2 Combination Figures 3 to 5As depicted. Thus, discs 34 to 40 in the first disc assembly 32 are connected to the first disc carrier 18 in such a way that friction surfaces 54 and 56 can rub against each other, and discs 44 to 52 in the second disc assembly 42 are connected to the second disc carrier 24 in such a way.

[0041] List of reference numerals 2-disc clutch 4-axis directions 6-axis direction 8 Radial direction 10 Radial direction 12 circumferential directions 14 Circumferential Direction 16 Rotation Axis 18 First bearing component 20 First support section 22 First Rotation Driven Profile 24 Second plate bearing component 26 Second support section 28 Second Rotational Drive Profile 30 disks 32 First Set 34 discs 36 discs 38 discs 40 discs 42 Second Set 44 discs 46 discs 48 discs 50 discs 52 discs 54 First friction surface 56 Second friction surface 58 Friction Liner Bearing 60 First Friction Liner 62 Second Friction Liner 66 disks 68 Type I recesses and / or grooves 70 Second type of recess and / or groove 72. Type III recesses and / or grooves 74 Friction Liner Fragment 76 inner edge 78 outer edge

Claims

1. A disc clutch (2), the disc clutch comprising: The first disc assembly (32) is rotatably connected and fixed to the first disc carrier (18). and a second disc assembly (42), which is rotatably connected to a second disc carrier (24), wherein the discs (34 to 40, 46 to 52) in the two disc assemblies (32, 42) are configured to rub against each other via friction surfaces (54, 56), wherein recesses and / or grooves are provided in at least one or more friction surfaces (54, 56) of the discs (34 to 40; 46 to 52) in the first and / or second disc assemblies (32; 42), wherein a first type of recess and / or groove (68) is provided, which is produced by a first manufacturing method of material forming and / or material casting and / or non-material removal, and a second type of recess and / or groove (70) is provided, which is produced by a second manufacturing method of material removal.

2. The disc clutch (2) as claimed in claim 1, wherein the first type of recess and / or groove (68) is produced by stamping, and / or the second type of recess and / or groove (70) is produced by mechanical manufacturing method.

3. The disc clutch (2) as claimed in claim 1 or 2, wherein the depth of the first type of recess and / or groove (68) is less than the depth of the second type of recess and / or groove (70).

4. The disc clutch (2) as claimed in any one of claims 1 to 3, wherein the at least one friction surface (54; 56) or the plurality of friction surfaces (54, 56) are formed by friction linings (60, 62) fixed on the friction lining support (58).

5. The disc clutch (2) as claimed in any one of claims 1 to 3, wherein the discs (34 to 40) in the first disc group (32) are provided with friction surfaces (54, 56) having the recesses and / or grooves (68, 70) on both sides, while the discs (44 to 52) in the second disc group (42) are not provided with friction surfaces (54, 56) having the recesses and / or grooves.

6. The disc clutch (2) as claimed in any one of claims 1 to 3, wherein at least one of the discs (34 to 40, 44 to 52) has both a recess and / or groove (68) of the first type and a recess and / or groove (70) of the second type.

7. The disc clutch (2) as claimed in any one of claims 1 to 3, wherein at least one of the discs (34 to 40, 44 to 52) has a recess and / or groove (68) of the first type, but without a recess and / or groove (70) of the second type, and at least another of the discs (34 to 40, 44 to 52) has a recess and / or groove (70) of the second type, but without a recess and / or groove (68) of the first type.

8. A disc (66) for a disc clutch (2) as claimed in any one of claims 1 to 3, the disc comprising the at least one friction surface (54; 56), wherein a first type of recess and / or groove (68) is provided in the at least one friction surface (54; 56), the first type of recess and / or groove being produced by a first manufacturing method of material forming and / or material casting and / or non-material removal, and a second type of recess and / or groove (70) being produced by a second manufacturing method of material removal.

9. A method for manufacturing a disc clutch (2) as described in any one of claims 1 to 3, the method comprising the following steps: Disks (34 to 40, 44 to 52) in a first disk group (32) that can be connected to a first disk carrier (18) and disks (34 to 40, 44 to 52) in a second disk group (42) that can be connected to a second disk carrier (24) are provided. A first type of recess and / or groove (68) is produced in the friction surfaces (54; 56) of at least one of the discs (34 to 40, 44 to 52) by a first manufacturing method of material forming and / or material casting and / or non-material removal. A second type of recess and / or groove (70) is produced in the friction surfaces (54; 56) of at least one disc (34 to 40, 46 to 52) and / or in the friction surfaces (54; 56) of at least another disc (34 to 40, 44 to 52) by a material removal second manufacturing method, and Compile disk groups (30) from the disks (34 to 40; 44 to 52) including the disks having the grooves and / or recesses.

10. A method for manufacturing the disc (66) as claimed in claim 8, the method comprising the following steps: A disc (66) is provided having at least one friction surface (54; 56). A first type of recess and / or groove (68) is produced in at least one friction surface (54; 56) of the disc (66) by a first manufacturing method of material forming and / or material casting and / or non-material removal. A second type of recess and / or groove (70) is produced in at least one friction surface (54; 56) of the disc (66) by a material removal second manufacturing method.

11. The disc clutch (2) as claimed in any one of claims 1 to 3, wherein the disc clutch (2) is a hydraulically actuated disc clutch (2).

12. The disc clutch (2) as claimed in claim 2, wherein the mechanical manufacturing method is milling.

13. The disc clutch (2) as claimed in claim 4, wherein the friction lining support (58) is a paper friction lining.

14. The disc clutch (2) as claimed in claim 4, wherein the friction linings (60, 62) are glued to the friction lining support (58) or segmentally fixed to the friction lining support (58).

15. The disc clutch (2) as claimed in claim 4, wherein the friction linings (60, 62) are glued to the friction lining support (58) or segmentally fixed to the friction lining support (58), while creating an intermediate third type recess and / or groove (72).

16. The disc clutch (2) according to any one of claims 1 to 3, wherein each of the discs (34 to 40, 44 to 52) in the first and second disc assemblies (32, 42) has a first friction surface (54) with the recesses and / or grooves (68, 70) and a second friction surface (56) opposite to the first friction surface (54) without the recesses and / or grooves.

17. The disc clutch (2) of claim 6, wherein both the first type of recess and / or groove (68) and the second type of recess and / or groove (70) are disposed in one or both friction surfaces (54; 56) of the at least one disc (34 to 40, 44 to 52).

18. The method for manufacturing a disc clutch (2) as claimed in claim 9, wherein the discs (34 to 40) in the first disc assembly (32) are connected to the first disc carrier (18) in such a way that their friction surfaces (54, 56) can rub against each other, and the discs (44 to 52) in the second disc assembly (42) are connected to the second disc carrier (24) in such a way.

19. The method for manufacturing a disc (66) as claimed in claim 10, wherein providing the disc (66) comprises providing a friction liner carrier (58) and fixing friction liner (60, 62) on the friction liner carrier (58) to form the at least one friction surface (54; 56).

20. The method for manufacturing a disc (66) as claimed in claim 19, wherein the fixing is performed simultaneously with the formation of the recess and / or groove (68) of the first type.

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