DE102015201585A1 - Assembly method for balancing a clutch and clutch - Google Patents

Abstract

The invention relates to an assembly method for assembling a clutch for a drive train of a motor vehicle, wherein the clutch comprises a plurality of coupling components and the method comprises at least the following, successive steps: a) providing a first intended for rotating coupling component, b) connecting a plurality of balancing weights with the first coupling component, c) connecting the individual coupling components to form the coupling, wherein at least the first coupling component is non-rotatably connected to a second coupling component, and d) balancing the assembled coupling by at least one of the previously associated with the first coupling component balancing weights in a determined unbalance range of the coupling is separated from the first coupling component.

Description

The invention relates to an assembly method for assembling a clutch (such as a friction / friction clutch) for a drive train of a motor vehicle, such as a car, truck, bus or agricultural utility vehicle, the (fully assembled) clutch a plurality of coupling components (comprising at least one counter-pressure plate, at least a pressure plate, at least one, between the at least one counter-pressure plate and the at least one pressure plate arranged clutch disc and a pressure pot). The assembly method comprises providing a first coupling component in a first method step and connecting the individual coupling components of the coupling to form the (fully or at least partially mounted) coupling, wherein the first coupling member is rotatably connected to a second coupling member. In addition, a plurality of balancing weights is connected to the first coupling component. The invention also relates to a clutch for a drive train of a motor vehicle, with a first coupling member, such as a counter-pressure plate, and a rotatably connected to the first coupling member second coupling member, wherein at least the first coupling component, a plurality of balancing weights is mounted to compensate for an imbalance, and a clutch made according to such an assembly method.

From the prior art it is known to screw on certain coupling components, for balancing the friction clutch, at least one serving as a balance weight screw member. This is, for example, in the DE 10 2009 007 829 A1 disclosed, wherein the friction clutch has at least one clutch housing, at least one with this rotatably, but limited axially displaceable pressure plate connected and effective between the clutch housing and the pressure plate movement means for the axial application of force to the pressure plate. For balancing the friction clutch has at least one forming this component recesses in which balancing weights are screwed.

In the possibilities known from the prior art, it is customary to press the existing balancing weights after determining the position and the size of the unbalance at the corresponding points to be balanced. In this case, preferably rivets are pressed into a counter-pressure plate / counter-plate. This balancing process is so far only carried out after the complete assembly of the friction clutch, so that the friction clutch can be balanced in its entirety and all parts of the clutch are considered in the balancing process. Since the balancing weights / balancing rivets must not dissolve under operating conditions under any conditions, the balancing rivets are pressed according to the prior art with high forces, in design as a press fit, in the designated coupling components. Due to these high press-fit forces, under certain circumstances an inadmissible deformation of the coupling components, for example, the counterpressure plate, which are usually made of a casting material, can occur. Since the space in the region of the counter-pressure plate by the adjacent pressure plate and the leaf spring connection is usually limited, it is not possible to attach a corresponding counter-holder during the press-fitting of the balance weight. As a result, the risk of deformation of the counter-pressure plate is further increased by the pressing.

It is therefore an object of the present invention to avoid the known from the prior art disadvantages, and to reduce the risk of unwanted plastic deformation of coupling components due to the connection processes and disassembly of the balancing weights.

This is inventively achieved in that the joining of a plurality of balancing weights with the first coupling component takes place temporally before mounting / installation of the first coupling component, in which mounting step, the first coupling member is rotatably connected to a second coupling member, and a balancing of (fully or at least partially) clutch takes place such that at least one of the balancing weights previously connected to the first clutch component is separated / removed from the first clutch component in a detected imbalance region of the clutch (after the first clutch component has been previously mounted).

As a result, it is now possible to mount the balancing weights in the first coupling component even before the assembly / partial assembly of the coupling, so that the high connection forces applied in this case can be supported (for example via counter-holders) such that the coupling components are not unintentionally permanently deformed / arched , The first coupling component is mounted and balanced only after connecting the balancing weights. Since the disassembly forces of the previously introduced, approximately pressed balancing weights are preferably significantly lower than their forces for connection / insertion forces (such as press-in forces), the balancing can be performed much easier. By this process according to the invention can either be dispensed with a counter-holder or the counter-holder are created on the same side, from which also the balancing weight to be removed is removed from the first coupling component. That's it Furthermore, it is also possible to design the balanced coupling even more space-saving.

Further advantageous embodiments are claimed in the subclaims and explained in more detail below.

So it is also advantageous if the balancing weights are at least partially designed as a rivet, screw (with a single or multiple thread) or bolts. This makes it possible to carry out the balancing weight as a common component, which is inexpensive to produce.

It is also advantageous if the first coupling component is plate-shaped, for example as a counterpressure plate, and / or the first coupling component is designed as a metal sheet, for example as a sheet steel, since the coupling component can then be produced relatively inexpensively, for example as a counterpressure plate. Preferably, the first and the second pressure plate of the coupling are made of such a metal sheet / steel sheet.

It is also expedient if the balancing weights are connected to the first coupling component in such a way that they are fastened / attached positively and / or positively in the first coupling component. Thus, a sufficiently high holding force is provided for those balancing weights that remain in the first coupling component even after the balancing process.

When the balancing weights are connected to the first coupling component in such a way that they are pressed into recesses of the first coupling component, a particularly cost-effective connection technology is available.

Furthermore, it is also advantageous if, during the pressing in of the balancing weights, the first coupling component is plastically deformed at least in the area of the recess (which receives the respective balancing weight). As a result, a particularly stable connection of the balancing weights is provided, which is then also easily (with less force) solvable. As a result, the disassembly of the balancing weights to be removed is significantly improved.

In this context, it is also advantageous if the separation of the at least one balancing weight from the first coupling component comprises a pulling out of the at least one balancing weight from the first component. Thus, the balancing weights are particularly easy to remove.

Furthermore, it is also advantageous if the balancing weights are distributed uniformly along a circumference of the first coupling component /, since this further improves / simplifies the balancing process.

Particularly preferably, the balancing weight can be dismantled non-destructively. This means that the balancing weight can be removed again from the first coupling component without being destroyed. For this, taken balance weights can be used again for subsequent balancing operations on other couplings, which brings a further cost savings.

The invention also relates to a corresponding coupling for a drive train of a motor vehicle, with a provided for rotating, first (preferably plate-shaped) coupling member, such as a counter-pressure plate, and a rotatably connected to the first coupling member, second coupling member, such as a pressure pot, wherein a plurality of balancing weights is mounted on at least the first coupling component to compensate for an imbalance, wherein the balancing weights are configured such that they are geometrically and / or materially prepared for the Wiederentfernen of the first coupling component. This also a coupling is particularly efficient balancing.

It is expedient in this context also when the balancing weights are received in recesses of the first coupling member to provide a sufficiently high holding power for the balancing weights available and to further improve the reliability of the clutch.

It is also advantageous if each balancing weight is prepared in such a way and interacts with the recess assigned to it that a disassembly force to be applied for separating the respective balancing weight is smaller than the loading force to be applied for connecting the respective balancing weight. This further reduces the risk of deformation of the coupling components.

It is also advantageous if the first coupling component in the region of the recesses has a lower hardness than the balancing weight assigned to the recess, since the balancing weight can thus be easily introduced into the first coupling component, preferably pressed in. In this context, it is also advantageous if the balancing weight has an outer peripheral surface which is geometrically (for example with a groove structure) and / or material (such as hardened) prepared so that it deforms first coupling component in the region of the recess during connection.

According to a further advantageous embodiment, a clutch for a drive train of a motor vehicle, such as a car, truck, bus or agricultural utility vehicle is provided, which coupling is made according to one of the previously described embodiments of the assembly process. Thus, the clutch can be made very efficient overall.

In this context, it is also advantageous if the clutch is designed as a double clutch and the first coupling component is designed as a (first or second) counter-pressure plate of the clutch. The double clutch would then also be particularly efficient balancing.

In other words, thus, by the mounting method according to the invention, a balancing of a coupling by removing balancing weights is made possible. Unlike the prior art, the present invention contemplates using balancing weights, such as balancing rivets or balancing screws, to balance a clutch. In this case, however, the balancing weights are to be subjected to a maximum number (suitable for compensating for any conceivable imbalances) even before the coupling is brought together, for example. in the counter-pressure plate / counter-pressure plate ready to hold. The balancing operation then results in removing the balancing weights from the coupling area, which do not contribute to balancing and are superfluous. In this way, the coupling is less stressed by pulling the rivet as by pressing in the assembled state. The balancing weights can be used in simple clutches, in dual clutches and in multi-plate clutches, or in possible combinations thereof. Especially with balancing rivets, this advantage is particularly great. Furthermore, the balancing concept according to the invention is applicable to a metal plate coupling.

The invention will now be explained in more detail with reference to figures, in which context also different embodiments are explained.

Show it:

1 a longitudinal sectional view of a coupling according to a first embodiment, which coupling has been balanced according to the assembly method according to the invention, said coupling being designed as a double clutch and balancing weights are mounted on a counter-pressure plate of the double clutch, and

2 an isometric view of a balancing weight according to an advantageous embodiment, this balancing weight is designed as balancing pin which has at the outer peripheral surface in contact with the first coupling member elevations, which outer peripheral surface is pressed when connecting to the first coupling component in the material of the first coupling component.

The figures are merely schematic in nature and are only for the understanding of the invention. The same elements are provided with the same reference numerals.

In 1 is a coupling according to the invention 1 represented, which is assembled according to the mounting method explained in more detail below. The coupling 1 is designed as a friction clutch, namely as a dry friction clutch (alternatively as a wet-running friction clutch). The coupling 1 is intended for use in a drive train of a motor vehicle, such as a car, truck, bus or agricultural utility vehicle and serves, as already known, as a separable torque transmitting element between a crankshaft of an internal combustion engine, such as a gasoline or diesel engine and a transmission / manual transmission of the motor vehicle , Furthermore, the clutch 1 designed as a double clutch, alternatively, however, it can also be configured as a single clutch or as a multi-plate clutch or in a combination thereof. The objective coupling 1 corresponds in its basic structure of the DE 10 2009 007 829 A1 known friction clutch whose characteristics should therefore be considered as integrated herein.

The coupling 1 is in two partial clutches 7 . 8th divided, which two partial clutches 7 . 8th in each case several coupling components 2 . 3 . 4 . 5 . 6 . 9 . 10 include. This has a second part clutch 7 (also as a partial clutch 2 denotes) at least a first pressure plate 3 , a first clutch disc 9 and a first counter pressure plate 4 on. In a coupled position of the second part clutch 7 clamps the first pressure plate 3 together with the first counterpressure plate 4 the first clutch disc 9 such that there is a non-rotatable connection between the first clutch disc 9 and the two plates 3 . 4 results. The first counterpressure plate 4 is still in an operating condition of the clutch 1 rotatably connected to a crankshaft and therefore transmits in the engaged position of the second part of the clutch 7 Torque from the crankshaft to a first transmission input shaft, with which the first clutch disc 9 rotatably connected. A first partial clutch 8th (also as a partial clutch 1 also has a counter-pressure plate, subsequently as a second counter-pressure plate 6 denotes a pressure plate, subsequently as a second pressure plate 5 referred to, as well as a clutch disc, hereinafter referred to as second clutch disc 10 referred to. The second clutch disc 10 and the plates 5 . 6 are in an engaged position of the first part clutch 8th rotatably connected. The second counterpressure plate 6 is still in an operating condition of the clutch 1 rotatably connected to a crankshaft and transmits in the engaged position of the first part clutch 8th Torque from the crankshaft to a second transmission input shaft, with which the second clutch disc 10 rotatably connected.

Furthermore, the clutch 1 also a box-like / pot-shaped, second coupling component in the form of a pressure pot 2 on which pressure pot 2 over the first and / or the second counter-pressure plate 4 . 6 rotatably connected to the crankshaft. With the pressure pot 2 Both are the two counter plates 4 . 6 as well as the two pressure plates 3 . 5 in an assembled / assembled state of the clutch 1 rotatably connected, wherein the pressure plates 3 . 5 and the pressure pot 2 are mounted displaceably at least in the axial direction.

On a first coupling component, which in the illustrated embodiment as the first counter-pressure plate 4 is executed, and therefore also with the reference numeral 4 are a variety of balancing / balancing weights, hereinafter referred to as balancing weights 11 designated, arranged / held / fixed. Alternatively, the first coupling component 4 but also as another coupling component of the coupling 1 be configured and about as the second counter pressure plate 6 , the first pressure plate 3 , the second pressure plate 5 or as the pressure pot 2 be executed.

The first counterpressure plate 4 / the first coupling component 4 is designed essentially plate / disc-shaped and formed from a metal sheet. The first counterpressure plate 4 / the first coupling component 4 has several recesses along its circumference 12 / Recordings / holes / openings. The recesses 12 are at a radially outer region of the first counter-pressure plate 4 / of the first coupling component 4 appropriate. Each of these recesses 12 is designed as a bore, namely as a through hole. The recesses 12 are distributed evenly along the circumference. Before balancing the clutch 1 , as explained in more detail below, is in all existing recesses 12 of the first coupling component 4 one balancing weight each 11 attached.

The balance weight 11 is especially good in 2 to recognize and is essentially designed as (plug) bolt. Every balance weight 11 is the same design. Every balance weight 11 always has a head 13 on, the larger in diameter and offset from a rod-shaped insertion area 14 of the balance weight 11 is designed. The insertion area 14 is doing in the recess 12 pressed and has a plurality of spline-like, in the longitudinal direction of the bolt-like balancing weight 11 running surveys, forming a groove structure 15 on. The groove structure 15 is on the outer peripheral surface of the insertion area 14 intended. The groove structure 15 is designed and preferably made of a hardened steel that they are in the connection / pressing of the balance weight 11 in the corresponding recess 12 in, the inner peripheral surface of the recess 12 forming edge, in the first coupling component 4 digs and thus plastically deformed this area.

Alternatively to the embodiment of the balance weight 11 as a bolt, it is also possible, the balance weight 11 as a (plastically deformable) rivet / rivet rivet, such as a Volloder a hollow rivet to design or as a screw, such as a screw (such as a self-tapping screw).

Every balance weight 11 is always designed and in the corresponding recess 12 in the first coupling component 4 introduced / held that the insertion force, ie the force required to connect the balance weight 11 with the coupling component 4 is necessary, is significantly higher than the disassembly force, ie the force that must be spent for the balance weight 11 again from the first coupling component 4 to remove / separate.

According to the mounting method according to the invention is for mounting the clutch 1 first, the first coupling component 4 , the first counterpressure plate here 4 is configured, provided. Subsequently (ie, subsequently) the plurality of balance weights 11 with this first coupling component 4 connected, namely in the recesses 12 pressed. Per recess 12 becomes a balancing weight 11 in the first coupling component 4 introduced until all for the inclusion of balancing weights 11 available recesses 12 a balance weight 11 take up. Then again (ie temporally afterwards) becomes the first coupling component 4 in the already partially assembled clutch 1 installed, wherein the first coupling component 4 rotatably with the pressure pot 2 is connected and adjacent to the (first) clutch disc 9 is arranged. Also the first pressure plate 3 , the second pressure plate 5 and the second counter pressure plate 6 are connected to each other in a rotationally fixed manner. Is the clutch 1 completely or at least partially assembled / assembled as a coupling part, the coupling 1 following (ie temporally subsequently). Preferably, the clutch 1 however, already fully assembled and can be mounted directly thereafter in the drive train of a motor vehicle. The balancing takes place in that at least one unbalanced area of the coupling (previously preferably mechanically) has been detected 1 located (previously with the first coupling component 4 connected) balance weight 11 from the first coupling component 4 is disconnected again. The determination of the imbalance region is preferably carried out via a common dynamic unbalance detection method. The corresponding balance weight 11 is for separating again from the recess 12 pulled out and not destroyed. For this purpose, a counterholder can be created exactly on the side on which the head 13 of the balance weight 11 located. The head 13 is preferably located in the axial direction on one of the second counter-pressure plate 6 opposite side of the first counter-pressure plate 4 , Thus, both the withdrawal as well as the counter-holding takes place on the same side of the first counter-pressure plate 4 ,

Furthermore, it is also possible by this balancing step for the imbalance distribution less or not responsible balancing weights 11 also again from the first coupling component 4 to separate. This would continue to save weight.

LIST OF REFERENCE NUMBERS

1

 clutch

2

 Pressure pot / second coupling component

3

 first pressure plate

4

 first counter-pressure plate / first coupling component

5

 second pressure plate

6

 second counterpressure plate

7

 second part clutch

8th

 first part clutch

9

 first clutch disc

10

 second clutch disc

11

 balance weight

12

 recess

13

 head

14

 insertion

15

 groove structure

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102009007829 A1 [0002, 0028]

Claims (10)

Assembly method for assembling a coupling ( 1 ) for a drive train of a motor vehicle, wherein the clutch ( 1 ) comprises a plurality of coupling components and the method comprises at least the following steps, which take place one after the other: a) provision of a first coupling component ( 4 ), b) connecting a plurality of balancing weights ( 11 ) with the first coupling component ( 4 ), c) connecting the individual coupling components to form the coupling ( 1 ), wherein at least the first coupling component ( 4 ) is rotatably connected to a second coupling member, and d) balancing the assembled coupling ( 1 ) by at least one of the previously with the first coupling component ( 4 ) balancing weights ( 11 ) in a detected imbalance area of the coupling ( 1 ) of the first coupling component ( 4 ) is separated. Mounting method according to claim 1, characterized in that the first coupling component ( 4 ) plate-shaped, such as a counter-pressure plate ( 4 ), and / or the first coupling component ( 4 ) is designed as a metal sheet, such as a steel sheet. Mounting method according to claim 1 or 2, characterized in that the balancing weights ( 11 ) with the first coupling component ( 4 ) are connected in the manner that they positively and / or positively in the first coupling component ( 4 ) are attached. Mounting method according to one of claims 1 to 3, characterized in that the balancing weights ( 11 ) with the first coupling component ( 4 ) in such a way that they are contained in recesses ( 12 ) of the first coupling component ( 4 ) are pressed. Mounting method according to claim 4, characterized in that when pressing the balancing weights ( 11 ) the first coupling component ( 4 ) at least in the region of the recess ( 12 ) is plastically deformed. Assembly method according to one of claims 1 to 5, characterized in that the separating of the at least one balancing weight ( 11 ) of the first coupling component ( 9 ) pulling out the at least one balancing weight ( 11 ) from the first coupling component ( 4 ). Mounting method according to one of claims 1 to 6, characterized in that the balancing weights ( 11 ) are at least partially designed as a rivet, screw or bolt. Clutch ( 1 ) for a drive train of a motor vehicle, with a provided for rotating, first coupling component ( 4 ), such as a counter-pressure plate ( 4 ), and one, rotatably with the first coupling component ( 4 ), second coupling component, such as a pressure pot ( 2 ), wherein at least the first coupling component ( 4 ) a plurality of balancing weights ( 11 ) is mounted to compensate for an imbalance, characterized in that the balancing weights ( 11 ) are configured such that they for removing again from the first coupling component ( 4 ) are geometrically and / or materially prepared. Clutch ( 1 ) according to claim 8, characterized in that the balancing weights ( 11 ) in recesses ( 12 ) of the first coupling component ( 4 ) are included. Clutch ( 1 ) according to claim 8 or 9, characterized in that each balance weight ( 11 ) is prepared in such a way and with its associated recess ( 12 ) cooperates, that one for the separation of the respective balance weight ( 11 ) is less than that for connecting the respective balance weight ( 11 ) applied insertion force.

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