WO2004074703A1

WO2004074703A1 - Fitted disc assembly and method for producing disc assemblies with a uniform overall air clearance

Info

Publication number: WO2004074703A1
Application number: PCT/EP2004/001574
Authority: WO
Inventors: Gerhard Meier-Burkamp; Tillmann KÖRNER
Original assignee: Voith Turbo Gmbh & Co. Kg
Priority date: 2003-02-21
Filing date: 2004-02-19
Publication date: 2004-09-02
Also published as: DE10307657A1; EP1595083A1

Abstract

The invention relates to a fitted disc assembly (1) comprising at least two adjacent elements (2, 2.1 to 2.4), which support or form friction surfaces and which can be intercoupled by means of a respective intermediate element (3.1 to 3.3) that supports or forms a friction surface. The invention is characterised by the following features: The elements that support or form friction surfaces are fixed in position in relation to one another in a peripheral and radial direction, by means of at least two connecting elements (17) that traverse them and can be displaced in relation to the connecting elements in an axial direction; the connecting elements have a respective stop (10, 11) on both sides, which limits the axial displacement of the elements that support or form friction surfaces; The distance between the stop surfaces (12, 13) formed by the stops corresponds to the sum of the thickness of the assembly, consisting of all elements that support or form friction surfaces and the intermediate elements in the applied position and to a head clearance, corresponding to a pre-defined overall air clearance.

Description

Assembled plate pack, process for producing

Lamella packs with a uniform total air gap and device for

Generation of lamella packets with a uniform overall air gap

The invention relates to a mountable plate pack, in detail with the features from the preamble of claim 1; Furthermore, a method for producing lamella packets with a uniform overall air gap, in particular for packaging lamellas to form lamella packets, and a device for producing lamella packets with a uniform overall air gap.

Multi-plate packs are used in transmissions primarily in the form of multi-plate clutches or braking devices. These comprise at least two elements which are arranged adjacent to one another in the axial direction and which form friction surfaces or which form friction surfaces and which are frictionally engaged with one another via corresponding friction surface or intermediate elements

Active connection can be brought. Friction surfaces are understood to mean the surfaces that are directly involved in the friction pairing when the frictional engagement and thus the power transmission are realized. These can be formed by a single surface or individual surface areas on the respective element. The formation takes place either directly on the corresponding friction surface-bearing element or intermediate element, or by applying coatings to the friction surface-bearing or forming elements or intermediate elements, or by separate elements connected to these and bearing the friction surfaces. When used in automatic transmissions, the friction-bearing or friction-surface-forming elements are spring-loaded directly. The aim is to achieve sufficient freedom of movement for the individual friction-bearing or friction-surface-forming elements in order to keep the drag losses as low as possible when the multi-plate clutch or multi-plate brake is released. The actuation, that is to say the generation of the frictional engagement, generally takes place via corresponding pressing devices, for example in the form of working pistons likewise arranged in the transmission. The provision is usually made by the provision of the individual bearing or friction surface-forming elements and intermediate elements. To improve this effect are arranged between these reset devices in the form of spring devices, which are biased when the frictional connection is realized. The attainable clearance of a multi-plate clutch should not fall below a certain predefined value, for example 0.25 mm per friction lining, and also not exceed a certain value, since otherwise corresponding piston paths have to be realized when activated. Due to the tolerances of the components, in particular the thickness of the individual lamellae as elements or intermediate elements which support or form friction surfaces, however, there are deviations in the actual air gap and thus also in the actual total air gap. The problem here is not compliance with the minimum clearance, but the very different path that the actuating device, in particular the working piston, must then travel from the rest position to the contact of the friction linings on the corresponding friction surfaces. The different piston travel in different transmissions of the same transmission type means that the shifting properties are so different depending on the tolerance of the corresponding components that satisfactory control of the individual gear stage changes is no longer possible with the same control. The remedy for series production is a comparison of the individual air clearances and thus the piston travel. Compensation slats are included as known measures. However, it is also possible to narrow the tolerance on the lamellae and on other components, but this entails an increased manufacturing outlay and thus increased costs. Another possibility is the compensation by adapting the control parameters in the electronic

Control, which in turn also requires the provision of appropriate controls or adaptation strategies.

The invention was therefore based on the object of creating a plate assembly which is preassembled as a structural unit and can thus be assembled in its entirety and with which the disadvantages mentioned are avoided. In particular, this should be able to be delivered and delivered as a pre-assembled unit and should also be independent of the tolerances of the individual friction surface-bearing or friction surface-forming elements or intermediate elements when used in gearboxes always require an identical actuating path of the actuating device, in particular piston path, in order to minimize the compensation effort by constructive and control-technical measures. Furthermore, a preassembled unit is to be created which is protected against possible manipulation from the outside. In the event of service, it must also be ensured that all components that are necessary for the proper functioning are always replaced.

The solution according to the invention is characterized by the features of claims 1, 19 and 21. Advantageous refinements are described in the subclaims.

According to the invention, in the case of a plate pack that can be mounted, comprising at least two friction surface-bearing or friction-surface-forming elements arranged next to one another, each of which can be frictionally coupled to one another via a friction-surface-bearing or friction-surface-forming intermediate element; the friction surface-bearing or friction surface-forming elements are fixed with respect to their position in the circumferential direction and radial direction to one another via at least two connecting elements extending through them and displaceable in relation to them in the axial direction. The connecting elements each have a stop on both sides to limit the axial movability of the friction surface-bearing or friction surface-forming elements, the distance between those formed by the stops facing one another

Stop faces equal to the sum of the thickness of the package made up of all friction surface-bearing or friction surface-forming elements and intermediate elements in the pressed-on state and a head play which characterizes a predefined total air play. Furthermore, the reset devices in the form of spring devices by the

Fasteners fixed. This ensures that all elements required for function are combined in a pre-assembled unit with minimal effort are integrated. Since the restoring elements act on the actuating device, in particular a piston, when used or installed in a transmission via the friction surface-bearing or friction surface-forming elements, the actuating device, ie the piston, is only pushed back as far as the connecting element permits. This is the

Working path of the actuating device, in particular of the working piston, is determined by the head play of the connecting element on the disk pack. The working path of the individual piston device of a gear unit or of a switching device assigned to a specific shift element of a plurality of gear units of the same type thus differs only as much as the process tolerance of the joining process, in particular the actuating device. Complex compensatory measures can be dispensed with.

The spring devices acting as resetting devices when releasing the disk set of a clutch or a braking device are preferably designed as a spring in the form of compression springs. However, the use of corresponding elastic elements, for example membranes, is also conceivable. The spring devices are arranged at least between the two outer elements that support or form friction surfaces and act on them, i.e. the spring devices extend through the friction surface-supporting or friction surface-forming elements arranged therebetween. This option is sufficient in practice. However, it is also conceivable that one between each two friction surface-supporting or friction surface-forming elements arranged adjacent to one another in the axial direction

Spring device is arranged.

There are a number of options with regard to the specific design of the connecting element. The stops can be made in one piece on the connecting element or can be designed as a separate component and connected to it in a detachable or non-detachable manner. In the first case, the part of the connecting element that extends through recesses in the friction surface-bearing or friction surface-forming elements and the stops are as integral component executed. When the stops or at least one stop is formed by a separate component, the part of the connecting element which extends through the friction surface-bearing or friction surface-forming elements and at least one stop are formed by different components. In the case of a detachable connection, the coupling between the connecting element and the stop takes place, for example, via a non-positive or positive connection. In the case of an inseparable connection, the connection is usually made through a material bond. The part of the connecting element that extends through the friction surface-bearing or friction surface-forming elements is thereby a pin, a

Bolt or a tubular element formed. These can already have stop areas forming a stop on one side. In the case of a detachable connection, these are formed, for example, with threads at the end regions, the stop being formed by a nut.

The arrangement of the connecting elements is preferably viewed symmetrically in the circumferential direction. However, the following arrangements or a combination of these are conceivable.

- Arrangement of several connecting elements arranged adjacent to one another in the circumferential direction

- a) one diameter or "- b) several different diameters

- Arrangement of the connecting elements adjacent to one another in the circumferential direction with a) the same distance or b) different distances from one another.

However, an arrangement is always chosen which, even with loose integration of the intermediate elements between the friction surface-bearing or friction surface-forming elements, reliably prevents them from sliding out and thus also with loose ones

Arrangement, ie arrangement without connection to other elements, provides a mountable plate pack, which can be stored in this form and is tradable. Furthermore, the outermost elements are always formed by the friction surface-bearing or friction surface-forming elements.

According to a particularly advantageous embodiment, the connecting element is designed as a rivet. The stops and thus stop surfaces are at

Riveting formed by upsetting and deforming the free end areas of the rivet shaft. This solution is characterized by a low design and manufacturing effort.

The friction surface-bearing or friction surface-forming intermediate elements free of a connecting or guiding element for fixing their position. According to a particularly advantageous embodiment, however, recesses are provided for guide elements, which then enable simple connection to the environment when used in gearboxes.

According to a particularly advantageous embodiment, the intermediate elements that support or form friction surfaces are connected to one another in the axial direction. The connection is made by means of connecting elements which extend through the friction surface-bearing or friction surface-forming intermediate elements in the axial direction and these in the radial and circumferential direction with regard to their

Fix position to each other. This connection must allow the intermediate elements to be displaceable in the axial direction. This can also be removable or non-removable. This connection can also be maintained during operation, in addition to which sealing can be applied in order to avoid or at least detect unauthorized interference.

The friction surface-bearing or friction surface-forming elements can be designed as outer plates and the friction surface-bearing or friction surface-forming intermediate elements as inner plates. However, the reverse case is also conceivable, ie the formation of the friction surface-bearing or friction surface-forming elements as inner plates and the friction surface-bearing or friction surface-forming intermediate elements as outer plates. For assembly This and simple connection in the gearbox can each be supported by extending guide elements or the outer plates have a profile in the area of their outer diameter and / or the inner plates have a profiling in the area of their inner diameter for realizing a fluid connection.

A device designed according to the invention for producing a plate pack with a uniform air gap is characterized by two sub-tools, between which the friction surface-bearing elements and intermediate elements are alternately arranged and in which, in which

Recesses the connecting elements are arranged, whereby a centering of the friction surface-bearing elements takes place at the same time. Furthermore, the connecting elements are guided on the part tools. The sub-tools also include pressure surfaces which come to rest on the outer friction-bearing elements of a plate pack. There are contact surfaces that serve to fix the stop in the axial direction. The contact surfaces and the contact surfaces of a part tool are designed parallel to each other. In at least one part tool, however, the contact surface and the contact surface are offset from one another in the axial direction. The offset determines the size of the desired head play, ie the desired total air play. Also take into account to ^"wherein the friction surface or friction surface forming elements is at offset the thickness or axial width of the stop. When riveting, this means the thickness of the shank. The friction surface or friction surface forming elements are alternately arranged with friction surface or friction surface forming intermediate members to produce a disk pack according to the invention, with respect to their position in the radial and circumferential directions are adjusted relative to one another by means of an auxiliary device. The elements that support the friction surface or that form the friction surface are matched with the elements that support or form the friction surface

Intermediate elements pressed against each other in the axial direction. Appropriate means are assigned to the individual sub-tools for this purpose. That or the Connecting elements are inserted into the recesses provided for this purpose, the part of a connecting element extending through the friction surface-bearing or friction-surface-forming elements being guided through the friction-surface-bearing or friction-surface-forming elements and the stops being positioned relative to the package of compressed friction-surface-bearing or friction-surface-forming elements and intermediate elements such that the sum the distances between each stop and a friction surface-bearing or forming element corresponds to a predefined head play, which is equal to the desired total air play of the plate pack. When the friction surface-bearing or forming elements are connected via rivets, the shaft of the rivet is guided through the friction surface-bearing or friction surface-forming elements in the undeformed state and the free end regions of the shaft are inserted between two riveting tools on both sides. The pressing of the friction surface-bearing or friction surface-forming elements and intermediate elements takes place, for example, by moving at least one of the two riveting tools relative to the other. During the pressing process, the end regions of the rivet are deformed by the riveting tool to form a stop due to the pressure loading thereby exerted.

The inventive displacement of the air gap as an offset in the tool is characterized in that at least one contact surface is offset in the axial direction with respect to the contact surface, the offset of the contact surface with respect to the contact surface taking place in the installation position in the direction of the respective other part tool. The sum of the axial offsets between the contact surface and the contact surface on the individual part tools corresponds to a predefined total clearance for the plate pack, taking into account the stop thickness.

The solution according to the invention is explained below with reference to figures. The following is shown in detail: Figure 1 illustrates in a schematic simplified representation

Basic design of a plate pack designed according to the invention; FIG. 2 illustrates a view A according to FIG. 1;

FIGS. 3a and 3b illustrate the basic principle according to the invention of the manufacture of a plate pack with a uniform air gap in a schematically simplified representation using a section from an axial section through a packer;

FIG. 4 illustrates a further embodiment of a plate pack designed according to the invention;

FIG. 5 illustrates a further development according to FIG. 1.

Figure 1 illustrates in a schematically simplified representation using a

Section of an axial section of a gear unit, a mountable plate pack 1 designed according to the invention. This comprises at least two mutually adjacent friction surface-bearing or friction-surface-forming elements 2, here 2.1 to 2.4, which can be brought into operative connection with friction surface-bearing or friction-surface-forming intermediate elements 3, here 3.1 to 3.3 , Depending on the arrangement of the friction surface-bearing or friction surface-forming elements 2.1 to 2.4 and the intermediate elements 3.1 to 3.3 and their design, these function as outer or inner plates. In the illustrated case, the friction surface-bearing or friction-surface-forming elements 2.1 to 2.4 are designed as outer plates and the friction-surface-bearing or friction surface-forming intermediate elements 3.1 to 3.3 as inner plates. Corresponding to the connection of the friction surface-bearing or friction surface-forming elements 2.1 to 2.4 and the intermediate elements 3.1 to 3.3, the disk pack is used in clutches or braking devices. In the case shown, it is a coupling device

4, since both the friction surface-bearing or friction surface-forming elements 2.1 to 2.4, which form the outer disks, and those which carry the friction surface or friction surface-forming intermediate elements 3.1 to 3.3 are rotatably mounted. The guidance of the friction surface-bearing or friction surface-forming elements 2.1 to 2.4, in the illustrated case of the outer plates, is generally carried out via guide elements 5, not shown in detail here, at least two being provided in the circumferential direction. These extend through recesses 6 in the friction-bearing or friction-surface-forming elements. In this context, the term friction-surface-bearing or friction-surface-forming elements means individual lamellae, the function of the friction surface being taken over by the surface areas involved in a friction pairing. This surface area can be arranged in one piece directly on the corresponding lamella or can be formed by coating or applying a separate covering or combining it with another element. This also applies to the expression of an intermediate element that carries or forms a friction surface. This too is surface areas formed on the intermediate element by surface treatment, coating or connection with other separate elements, which participate in the friction pairing. According to the invention, the combination of the friction surface-bearing or friction surface-forming elements 2.1 to 2.4 and the intermediate elements 3.1 to 3.3 arranged therebetween takes place by means of connecting elements 9, which limit the axial play of the friction surface-bearing or friction surface-forming elements 2.1 to 2.4 and thus the overall clearance of the clutch 4 in the axial direction. In order to provide a plate pack 1 that can be assembled, the elements 2.1 to 2.4 that support or form the friction surface also form the plates of the plate pack 1 that are respectively outer in the axial direction, and there are at least two

Connecting elements 9 are provided, which are arranged at a distance from one another in the circumferential direction in such a way that the intermediate elements 3.1 to 3.3 lying in between in the unassembled state, i.e. not in the form of the mountable plate pack 1 outside the installation environment in the gearbox, do not slide out of the spaces. However, according to a

View A according to FIG. 2 provides a plurality of such connecting elements 9.1 to 9.4, which are arranged offset from one another in the circumferential direction and are preferably arranged at the same distance from each other in the circumferential direction on a diameter to implement a symmetrical design. The connecting element 9 is free of a guiding and centering function for the friction surface-bearing or friction surface-forming elements 2.1 to 2.4 and only serves to limit the axial displaceability of the friction surface-bearing or friction surface-forming elements 2.1 to 2.4 when the clutch 4 is released and thus the overall clearance of the clutch 4. Zu For this purpose, the connecting element 9 has on both sides a stop 10 and a stop 11, which each form a stop surface 12 or 13 for the individual friction surface-bearing or friction surface-forming elements, in particular the respective outer friction surface-bearing or friction surface-forming elements 2.1 and 2.4. The length of the connecting element 9 in the axial direction between the two stops 10 and 11, in particular the stop surfaces 12 and 13, corresponds to the thickness D of the individual friction surface-bearing or friction surface-forming elements with intermediate elements 2.1 to 2.4 and 3.1 to 3.3 in the compressed state and a predefined total air gap d air gap - D describes the plate pack thickness, which results from the individual friction surface-bearing or friction surface-forming elements and intermediate elements in the compressed state. This is composed of the sum of the individual thicknesses D1 to D7 of the friction surface-bearing or friction surface-forming elements 2.1 to 2.4 and the intermediate elements 3.1 to 3.3, taking into account the elasticity of the friction linings. The stops 10 and 11 can be formed in one piece on the connecting element 9 or can be formed by separate elements. In the first-mentioned case, the connecting elements 9 are in accordance with a particularly advantageous embodiment

Holding rivets 14 trained. By deformation due to pressure or impact of the free ends 15 and 16 of the shaft 17, the connecting elements 9 are formed with the stop surfaces 12 and 13. The connecting elements 9, in particular in the case of a symmetrical arrangement thereof, can take on the function of fixing the position of the friction surface-bearing or friction surface-forming elements alone, at least for the transport. In particular when arranging several such connecting elements 9 in A circumferential direction adjacent to one another also results in a rough fixation of the position of the intermediate elements 3.1 to 3.3. The connecting elements ensure that the same total air gap is available for each plate pack in the installed state. As already described, this is determined by the difference from the total length of the

Connecting element 9 between the two stop surfaces 12 and 13 and the total thickness D of the plate pack or the difference between the total length of the connecting element 9 and the total thickness D of the compressed plate pack described in consideration of the stop width in the axial direction in the prestressed state. Different possibilities then arise for the assembly. In the configuration of the plate pack 1 in the basic version according to FIG. 1, the intermediate elements 3.1 to 3.3 are threaded during installation, for example via a cone, and are aligned with respect to one another in the circumferential direction with respect to their position. The alignment of the friction surface-bearing or friction surface-forming elements 2.1 to 2.4 in

The circumferential direction to each other and also in the radial direction within certain limits is determined by the connecting elements 9. When installing the plate pack, the friction surface-bearing or friction surface-forming elements 2.1 to 2.4 are fixed, depending on the type of application of the friction surface-bearing or friction surface-forming elements 2.1 to 2.4, either via the guide elements 5 additionally provided according to FIG. 2 or by corresponding recesses or projections on the friction surface-bearing elements or friction surface forming elements 2.1 to 2.4 on the outer circumference in cooperation with corresponding projections or recesses on the housing or another rotating element in the

Transmission.

Furthermore, the connecting elements 9 also serve to guide at least one resetting device 7, which comprises at least one spring device 8. There is the possibility that individual spring devices 8.1 to 8.3 each between two axially adjacent friction surface-bearing or friction surface-forming elements 2.1 to 2.4 is provided or only a single spring device, which is effective at least between the respective outer friction surface-bearing or friction surface-forming elements 2.1 and 2.4.

FIGS. 3a and 3b illustrate in a schematically simplified representation with the aid of a section through a packaging device 18 as a device for producing lamella packets with a uniform overall air gap in axial section, when viewed in basic section, the basic principle of a method according to the invention for realizing a lamella package 1 with a uniform overall air gap. The packaging device 18 designed according to the invention is designed in such a way that this _air gap d _air gap is already placed in the device and is not provided on the connecting element 9. The embodiment of the packaging device 18 shown in FIG. 3 is a packaging device in which the function of the connecting elements 9 is realized by riveting the plate pack 1. The individual friction surface-bearing or friction surface-forming elements 2.1 to 2.4 as well as the rivets 20 in the form of hollow rivets 21 extending through the recesses 19 arranged therein can be seen. The packaging device 18 contains two sub-tools, a first sub-tool 22 and a second sub-tool 23, at least one of the two tools compared to the other in axial

Direction is displaceable. However, a relative movement of the two sub-tools 22 and 23 against one another is also conceivable. The first method step shown in FIG. 3 a includes the arrangement of the elements 2.1 to 2.4 carrying the friction surfaces or the friction surfaces forming the individual rivets 20 with intermediate elements 3.1 to 3.3 arranged between them between the two sub-tools 22 and 23. For this purpose, both sub-tools 22 and 23 each have a guide 24 and 25 which, when the rivets 20 are designed as hollow rivets 21, extends over at least a portion of the axial extent of the hollow rivets 21 starting from the free ends 15 and 16. Furthermore, the two sub-tools, first sub-tool 22 and second sub-tool 23, form two contact surfaces 26 and 27, which form the elements 2.1 that are located on the outer friction-bearing or friction-surface-forming elements are directed to 2.4. Furthermore, contact surfaces 28 and 29 are provided on the two sub-tools - the first sub-tool 22 and the second sub-tool 23 - which are used to implement or abut the stops 10 and 11. The contact surfaces 28 and 29 are formed parallel to the contact surfaces 26 and 27. According to the invention for relocating

Gesamtlüftspiels d UEFT _s pi _e i into the mold, ie the Paketiervorrichtung 18, the arrangement between the pressing surface 27 and contact surface 29 and the pressing surfaces 26 and 27 and the abutment surfaces 28 and 29 offset. In this case, the offset can only be relocated to a part tool, for example part tool 23 as shown in FIG. 3a, or to both. However, for the sake of simplicity, preferably only the offset is placed in one of the two sub-tools. The offset in the axial direction corresponds to the sum of the desired _air clearance d _uf t _s pi _e i and the thickness of the stop, here the stop 11. If the offset is not shown here, it is divided into both sub-tools, so that the head play is split between both sub-tools.

The free end or the free ends 15 and 16 are compressed on the shaft 17 of the hollow rivet 21 by pressure or impact until the individual contact surfaces 26 and 27 come to rest on the friction surface-bearing or friction surface-forming elements 2.1 and 2.4 and the entire plate pack 1 is made of friction surface-bearing or friction surface

Elements 2.1 to 2.4 and intermediate elements 3.1 to 3.3 is biased. Depending on the tolerances of the individual friction-surface-bearing or friction-surface-forming elements 2.1 to 2.4 or friction-surface-bearing or friction-surface-forming intermediate elements 3.1 to 3.3, as well as if the friction linings are arranged separately, these are then more or less large

Forming a stop 10 or 11 at the free ends 15 and 16. In particular, the stop height is varied during riveting. However, the overall air gap remains constant in all of the plate packs 1 produced with this tool when using the same connecting elements.

FIG. 3b illustrates the packaging device 18 according to FIG. 3a with the riveted plate pack 1 riveted. This shows that the free ends 15 and 16 on the shaft 17 now form the stops 10 and 11, the height h being the same for the same initial rivet lengths due to the total thickness of the disk pack in the compressed state, the head clearance being caused under different tolerances. The impact or pressure effect can take place on one side or on both sides. This is preferably done on both sides.

FIG. 4 illustrates, in a schematically simplified representation, a further possibility for joining the individual elements 2.1 to 2.4 that carry or form friction surfaces. In this case, the individual elements that support or form friction surfaces with the intermediate elements 3.3 to 3.3 arranged therebetween are also threaded onto a connecting element 9. This can for example be designed as a pin bolt, sleeve or the like. However, the stop or stops 10, 11 are not formed by deformation but by means of a detachable or non-detachable one with the bearing in the axial direction through the friction

Elements 2.1 to 2.4 extending part 30 of the connecting element 9 coupled element 31, for example a nut. The assignment of the stop 10 or 11 to the friction surface-bearing or friction surface-forming elements 2.1 to 2.4, however, is always carried out in the compressed state of the individual lamellae, taking into account the desired total ventilation clearance dLü _f tspiei-

However, the tool used for realizing a uniform overall air gap in the lamination stacking is preferably designed in such a way that it is supported on the individual package.

The head play of the connecting elements thus always remains constant, since the support of the tool on the friction-bearing elements results in different lengths of the connecting elements as a result of different thicknesses of the connecting elements, the total air play, which corresponds to the head play of the connecting element, but remains constant. Also the return springs 8 for the friction surface-bearing or friction surface-forming elements and an actuating device in the form of a piston through the Centered connecting elements, the actuating element is pushed back only as far as the connecting element 9 allows. Thereby, the working path of the actuating element, in particular the piston 32 according to Figure 1 when used in transmissions by the tip clearance, ie The total running d u _f t _s p i _e i fixed riveting of the disk pack. 1 The working path of the piston 32 scatters only as much as the process tolerance of the wing process for the individual friction surface-bearing or friction surface-forming elements.

FIG. 5 illustrates a further development according to FIG. 1, in which the intermediate elements 3.1 to 3.3 bearing or forming the friction surface. are additionally centered with respect to their position in relation to one another in the circumferential direction and radial direction. This is also done, for example, by riveting or a removable seal 33.

LIST OF REFERENCE NUMBERS

1 plate pack

2.1 to 2.4 Elements that support or form friction surfaces

3.1 to 3.3 intermediate elements bearing or forming friction surfaces

4 coupling device

5 guide elements

6 recesses

7 reset device

8 spring device

9 connecting element

10 stop

11 stop

12 stop surface

13 stop surface

14 holding rivet

15 free end

16 free end

17 shaft

18 packaging device

19 recess

~ 20 rivet

21 hollow rivet

22 first part tool

23 second part tool

24 leadership

25 leadership

26 contact surface

27 contact surface

28 stop surface

29 Stop surface dLüftspiei Total clearance of the plate pack D Lameia package density in the pressing state

D1 to D7 Thickness of the individual friction surface-bearing or friction surface-forming elements

Claims

claims

1. Mountable plate pack

1.1 with at least two mutually adjacent friction-surface-bearing or friction-surface-forming elements, each of which can be frictionally coupled to one another via a friction-surface-bearing or friction-surface-forming intermediate element; characterized by the following features:

1.2 the friction surface-bearing or friction surface-forming elements are fixed with respect to their position in the circumferential direction and radial direction to one another via at least two connecting elements extending through them and are displaceable in relation to them in the axial direction;

1.3 the connecting elements each have a stop on both sides to limit the axial mobility of the friction surface-bearing or friction surface-forming elements;

1.4 the distance between the stop surfaces formed by the stops corresponds to the sum of the thickness of the package of all friction surface-bearing or friction surface-forming elements and intermediate elements in the pressed-on state and a head play which corresponds to a predefined total air play.

2. Mountable plate pack according to claim 1, characterized by the 2.1 at least between the two outer friction surface-bearing or friction surface-forming elements, restoring means are arranged; 2.2 the resetting means comprise at least one spring device;

2.3 the individual spring device is fixed on the connecting element.

3. Mountable plate pack according to one of claims 1 or 2, characterized in that between two mutually adjacent in the axial direction arranged friction surface-bearing or friction surface-forming

Elements a spring device is arranged.

4. Mountable plate pack according to one of claims 1 to 3, characterized in that the part extending through the friction surface-bearing or friction surface-forming elements of the connecting element and the stops are designed as an integral component.

5. Mountable plate pack according to claim 4, characterized in that the connecting element is designed as a rivet.

6. Mountable plate pack according to one of claims 1 to 3, characterized by the following features: 6.1 by the friction surface bearing or friction surface forming

Elements extending part of the connecting element and at least one

Stop are formed by different components; 6.2 which is characterized by the friction surface bearing or friction surface forming

Elements extending part of the connecting element and stop are releasably connected to each other.

7. Mountable plate pack according to claim 6, characterized in that by the friction surface bearing or friction surface forming

Elements extending part of the connecting element of a pin, a bolt or a tubular element with thread at the end regions and the stop is formed by a nut.

8. Mountable plate pack according to one of claims 1 to 3, characterized by the following features: 8.1 by the friction surface bearing or friction surface forming

Elements extending part of the connecting element and at least one

Stop are formed by different components; 8.2 of the friction surface bearing or friction surface

Elements extending part of the connecting element and stop are inextricably linked.

9. Mountable plate pack according to claim 8, characterized in that the part extending through the friction-bearing or friction-surface-forming elements of the connecting element is formed by a pin, a bolt or a tubular element and the

Stop is cohesively connected to this.

10. Mountable plate pack according to one of claims 1 to 9, characterized in that the friction surface-bearing or friction surface-forming intermediate elements free of a connecting or guiding element

Fixing these are.

11. Mountable plate pack according to one of claims 1 to 9, characterized in that the friction surface-bearing or friction surface-forming intermediate elements are connected to one another in the axial direction.

12. Mountable plate pack according to claim 11, characterized in that the connection is made by means of connecting elements which extend through the friction surface-bearing or friction surface-forming intermediate elements in the axial direction and fix them in the radial and circumferential direction with respect to their position relative to one another.

13. Mountable plate pack according to claim 11 or 12, characterized in that the connection is made by means of connecting elements which are formed by the friction surface bearing or friction surface forming

Extend intermediate elements in the axial direction, the friction surface-bearing or friction surface-forming elements being displaceable relative to one another to a limited extent in the axial direction.

14. Mountable plate pack according to one of claims 11 to 13, characterized in that the connection is releasable by means of connecting elements.

15. Mountable plate pack (1) according to one of claims 1 to 14, characterized by the following features:

15.1 the elements bearing or forming the friction surface are designed as outer plates;

15.2 the intermediate elements carrying the friction surfaces or forming the friction surfaces are designed as inner plates.

16. Mountable plate pack (1) according to one of claims 1 to 14, characterized by the following features:

16.1 the elements bearing or forming the friction surface are designed as inner plates;

16.2 the intermediate surface-bearing or friction-surface-forming elements are designed as outer plates.

17. Mountable plate pack according to claim 15 or 16, characterized in that the outer plates have a profile in the region of their outer diameter for realizing a fluid connection.

18. Mountable plate pack according to one of claims 15 to 17, characterized in that the inner plates have a profile in the region of their inner diameter for realizing a fluid connection.

19. Mountable plate pack according to one of claims 15 to 18, characterized in that the outer and / or inner plates have recesses for receiving guide elements.

20. Process for the production of mountable plate packs with a uniform total air gap

20.1 in which the friction-surface-bearing or friction-surface-forming elements are alternately arranged with friction-surface-bearing or friction-surface-forming intermediate elements, the position of the friction-surface-bearing or friction-surface-forming elements being adjusted in relation to one another by means of an auxiliary device;

20.2 in which the friction-bearing or friction-surface-forming elements are pressed against one another in the axial direction with the friction-surface-bearing or friction-surface-forming intermediate elements;

20.3 in which the part of a part extending through the friction surface-bearing or friction surface-forming elements

Connection element is guided through the friction surface-bearing or friction-surface-forming elements and the stops are positioned relative to the package of compressed friction-surface-bearing or friction-surface-forming elements and intermediate elements such that the sum of the distances between each stop and a friction surface-bearing or forming element is a predefined head play, which is equal to the desired one The total clearance of the plate pack is the same.

21. The method according to claim 20, characterized by the following

Characteristics:

21.1 in which the connection between the friction-bearing or forming elements takes place via rivets;

21.2 in which the shaft of the rivet is guided in the undeformed state through the elements carrying or forming the friction surface and the free end regions of the shaft are inserted between two riveting tools on both sides;

21.3 in which the pressure of the friction surface-bearing or friction surface-forming elements and intermediate elements is generated by relative movement of at least one of the two riveting tools relative to the other and during the pressing process the pressure exerted thereby exerted, the end regions of the rivet are deformed by the riveting tool to form a stop.

22. Device for producing lamella packets with a uniform total air gap;

22.1 with two sub-tools, at least one being displaceable relative to the other;

22.2 each part tool comprises a guide for the connecting element and a contact surface for the friction surface-bearing or friction surface-forming element;

22.3 each part tool further comprises a contact surface for the stop of the connecting element;

22.4 contact surface and contact surface of a part tool are arranged parallel to each other; 22.5 at least one contact surface is axial in relation to the contact surface

Arranged offset, the offset of the pressing surface relative to the contact surface in the installation position in the direction of the other part of the tool; 22.6 the sum of the axial offsets between the contact surface and the contact surface on the individual part tools corresponds to a predefined one

Total clearance for the plate pack taking into account the stroke thickness.

23. The device for producing disk packs with a uniform total air gap according to claim 21, characterized in that at least one tool part is assigned means for generating the contact pressure for the friction surface-bearing or friction surface-forming elements and intermediate elements.

24. Device for generating lamella packets with a uniform

Total ventilation according to one of claims 21 or 22, characterized by the following features:

24.1 the sub-tools are designed as riveting tools;

24.2 each part tool has a guide for the shaft of the rivet; the sum of the individual offsets between the contact surfaces and the contact surfaces of the part tools corresponds to a predefined total air gap for the plate pack and the thickness of the shaft in its end areas;

24.3 with a pressure and / or impact load on at least one of the sub-tools.

25. Device for generating lamella packets with a uniform

Total air gap according to claim 23, characterized in that an offset between the contact surface and the pressing surface is provided only on one part tool.