Articulated rail connection for rail joints of profiled sliding rails

Abstract

The invention relates to a hinged rail connection for rail joints (1a, 1b) of profile guide rails. In the upper joint area (S) of adjacent rail joints (1a, 1b), an upper hinge connection (7, 8, 9) is provided, with, for example, at least one loose bearing flange (7) bridging the joint area (S). Furthermore, in the lower joint area (S) of adjacent rail joints (1a, 1b), a lower hinge connection (28, 29) is provided, comprising a pivot bearing shell (29) and a pivot bearing blade (28) engaging therein. At least some of the hinge connection components (7, 8, 9, 28) are forged, in particular drop-forged. According to the invention, the forged hinge connection component (7, 8, 9, 28) is additionally at least partially calibrated.

Description

[0001] The invention relates to an articulated rail connection for rail joints of profiled running rails, wherein in the upper joint area of ​​adjacent rail joints an upper articulated connection with at least one articulated connection part, for example a loose bearing cheek bridging the joint area, is provided, wherein further in the lower joint area of ​​adjacent rail joints a lower articulated connection with in particular a pivot bearing shell and a pivot bearing blade engaging therein is realized as further articulated connection parts, and wherein at least individual articulated connection parts are forged, in particular drop forged.

[0002] This means that the articulated connection parts in the upper joint area are preferably, and not limited to, the loose bearing cheek that bridges the joint area and, for this purpose, may interact with two opposing fixed bearing cheeks at the two rail joints to be connected. This is of course only an example. In principle, other articulated connection parts can also be used at this point, for example a fixed bearing cheek. In contrast to the loose bearing cheek, the fixed bearing cheek is typically firmly attached to one joint area and is connected to a bearing cheek or a fixed bearing cheek at the other joint area. In contrast, the loose bearing cheek forms an articulated connection with the two fixed bearing cheeks at the opposite rail joints, whereas with a fixed bearing cheek only one articulated rail connection is usually implemented at this point.

[0003] In addition to this conceivable design of the upper joint connection, the lower joint connection also has one or more joint connection parts.

[0004] This includes, by way of example and also not by way of limitation, the pivot bearing shell and the pivot bearing blade engaging therein. This means that instead of the pivot bearing shell and pivot bearing blade, other articulated connection parts can also be implemented at this point—just as with the upper articulated connection. This means that the floating bearing cheek and / or the pivot bearing shell and / or the pivot bearing blade and / or the one or more fixed bearing cheeks represent, by way of example, one or more articulated connection parts that are forged, in particular drop-forged.

[0005] Such articulated rail connections are typically used to connect individual profile rails or their rail joints to each other in an articulated manner. This creates a rail line that is connected to a track extension, for example, via suspension chains. This allows the entire rail line to be used, for example, to guide a suspended monorail in the track extension and to use the rail line accordingly as a travel route. Such a rail line is described in detail in DE 196 16 937 C1, for example.

[0006] Typically, the individual rail tracks and thus also their rail joints in the area of ​​the articulated rail connection have an I-shaped cross-section. Furthermore, the upper flange is essentially U-shaped, while the lower flange has an inverted U-shaped character, as can be seen in the generic document according to EP 1 841 674 B1, which is attributed to the applicant, in the file therein. Fig. 3 The individual carriages of a monorail are generally suspended from the respective rail line by means of rollers. The individual rollers engage on the right and left sides of an I-shaped web and rest on the inverted U-shaped bottom flange. This results in unavoidable shocks in the area of ​​the respective articulated rail connection, which are transmitted into the rail line in the area of ​​the articulated rail connection.

[0007] This means that the articulated rail connection must not only be easily implemented by coupling the individual rail joints together through a rotary movement in the area of ​​the articulated rail connection. It is also important to set the gap size in the upper and lower joint areas as small as possible in order to minimize the play that occurs at this point during operation and increases over the service life. Otherwise, this could lead to damage to the rollers of the individual carriages of the monorail and / or to one or more of the articulated connection parts, i.e. essentially the loose bearing flange, the pivot bearing shell and / or the pivot bearing blade and / or one or all of the fixed bearing flanges, being damaged or, in extreme cases, even cracking or breaking. This represents a significant safety risk.

[0008] Although steel is used as the material here, and the aforementioned articulated connection parts are forged, this is the procedure for the articulated rail connection known from practice and is also essentially used in the further state of the art according to EP 1 546 461 B1. This reduces material loss compared to, for example, machining and generally results in a targeted change in the microstructure (in the material steel used), thus increasing strength, which is advantageous for the articulated connection for the reasons described above.

[0009] The advantageous use of drop forging as a manufacturing process for the joint connecting parts also results in increased strength because it also closes any defects such as pores and / or blowholes that are often observed in the production of cast parts.

[0010] In principle, such forging processes, especially drop forging processes or pressure forming processes according to DIN 8583-4, can be implemented relatively cost-effectively for the production of articulated connection parts. However, such forging processes generally suffer from the problem that a high degree of dimensional accuracy cannot be guaranteed. This leads to relatively large tolerances being observed in practice and during operation for the articulated connection parts known to date and the realization of an articulated rail connection using them.Due to the impact loads encountered during operation of a track equipped with them and a monorail system that uses the track as a route, these lead to an increase in the inevitable gap between the individual rail joints, causing increasing damage not only to the rollers of the individual carriages but also to the articulated rail connection itself. The invention aims to remedy this situation.

[0011] The invention is based on the technical problem of further developing such an articulated rail connection for rail joints of profiled rails in such a way that overall wear is reduced.

[0012] To solve this technical problem, the invention proposes, starting from the generic articulated rail connection for rail joints of profiled rails, that the respective forged articulated connection part is additionally at least partially calibrated.

[0013] Within the scope of the invention, the first step is to continue to forge the respective joint connection part unchanged, in particular by drop forging. This gives the joint connection part in question its desired shape and, in particular, its three-dimensional form. According to the invention, this forging or drop forging process is then additionally subjected to at least partial calibration. This means that individual surfaces of the forged joint connection part are reworked, thereby defining a calibrated surface. This means that the joint connection part advantageously has at least one calibrated surface. According to the invention, this calibrated surface is a centering and / or contact surface.

[0014] A centering surface refers to a surface that is used or deployed when the respective articulated connection part is secured to the corresponding rail joint. The calibrated centering surface ensures precise and play-free securing of the respective articulated connection part in the correct (spatial) position.

[0015] Furthermore, the calibrated surface can alternatively or additionally be designed as a contact surface. In this case, the calibrated contact surface functions, for example, as a sliding surface for rotational movements of the adjacent rail joints connected to each other via the articulated rail connection. The contact surface can also be a calibrated contact surface in such a way that the pivoting or rotational movement of the adjacent rail joints relative to each other occurs precisely along a circular arc, for example, specified by the calibration.

[0016] In any case, the precise centering or alignment of the relevant articulated connection part, as well as the precisely specified pivoting movement as a whole, means that the play in the area of ​​the articulated connection, which was previously observed in the prior art, is reduced to a minimum according to the invention. In any case, the play is reduced compared to conventional procedures thanks to the additional calibration. As a result, the coupled rail joints not only provide a perfect and precise connection to one another, but also allow any movements relative to one another to be realized with virtually no play. Furthermore, the gap that inevitably exists between the adjacent rail joints is not enlarged from the outset and, as it were, inherently, so that, in contrast to the previous state of the art, improved wear behavior is observed.In particular, the service life of the articulated rail connection according to the invention is significantly extended compared to the variants previously used in this area. This means that any replacement is required at longer intervals.

[0017] In addition, safety is also improved because the likelihood of any cracks or shearing in this area is reduced. Furthermore, even if the lower articulated joint fails or breaks, the upper articulated joint is still capable of maintaining the articulated rail connection between the adjacent rail joints on its own. This is further enhanced by the fact that the particularly stressed floating bearing flange or, alternatively, the fixed bearing flange (or both) at this point is (are) made of a heat-treated steel, particularly drill steel. In fact, a steel such as 30 MnB5 has proven particularly suitable here.

[0018] According to the invention, it is sufficient if only the floating bearing cheek or also one fixed bearing cheek is made of the respective tempering steel, whereas less resilient steels are used for the remaining joint connection parts. The invention is based on the finding that the floating bearing cheek is exposed not only to possible tension or compression due to the forces acting on it and which are eccentric with respect to the joint connection, but also to leverage forces, which can be easily and permanently absorbed by using the described material. This represents the key advantages.

[0019] According to a further advantageous embodiment, the calibrated surface on the respective joint connection part is generally created by a machining process following forging. This machining process typically involves surface pressing. The surface pressing can be carried out at a predetermined pressure.

[0020] Furthermore, it has proven advantageous to apply surface pressure as a control process up to a certain pre-forming stroke. This allows the deformation of the calibrated surface to be precisely specified and a specific target dimension to be maintained. A press die is generally used for surface pressure.

[0021] Calibration is performed by continuously measuring the calibration surface impacted by the press ram during its deformation and calibration. For example, a distance between two opposing surfaces can be measured as the contact surface. The distance, as the actual value, is then compared with a target value specified in the design documents in a control unit that impacts the press ram. The press ram is then subjected to repeated pressure in several, typically decreasing, steps until the actual value and the target value match within specified tolerances.

[0022] In detail, the design further includes the floating bearing cheek as a jointed connection component with opposing calibration surfaces on axial webs. The axial webs engage in a corresponding axial recess of a fixed bearing cheek. Manufacturing the floating bearing cheek with the calibration surfaces on the axial webs enables a particularly play-free engagement of the floating bearing cheek with its axial webs in the axial recesses of the corresponding fixed bearing cheek, which accommodates the floating bearing cheek.

[0023] In principle, it is possible, alternatively or additionally, for the respective calibration surface on the axial webs of the floating bearing cheek to correspond to the corresponding calibration surfaces on the corresponding axial recesses in the fixed bearing cheek. In this case, both the axial webs on the floating bearing cheek and the axial recess in the associated and corresponding fixed bearing cheek are calibrated, which ensures a particularly play-free engagement of the floating bearing cheek with the fixed bearing cheek.

[0024] The respective fixed bearing rail can also be equipped with an additional calibration surface. This calibration surface of an additional floating bearing rail can be a contact surface or sliding surface along which the floating bearing rail slides during any pivoting movement of the two adjacent rail joints.

[0025] In principle, the pivot bearing blade, as a joint connection part, can also be equipped with two opposing calibration surfaces on the lower joint. These two opposing calibration surfaces interact with corresponding stops on the pivot bearing shell that accommodates the pivot bearing blade. Furthermore, it has proven effective for the pivot bearing blade to be equipped with two additional opposing calibration surfaces on curved guide surfaces of its pivot nose. The curved and thus calibrated guide surfaces can interact with corresponding guide surfaces on the aforementioned pivot bearing shell.

[0026] The invention also relates to a method for producing an articulated rail connection for rail joints of profiled rails, as described in more detail in claim 14. The process involves forging the respective articulated connection part, then deburring it, and finally calibrating it. In this context, at least one calibration surface on the associated articulated connection part is calibrated.

[0027] The result is an articulated rail connection for profiled rail joints that can be manufactured and connected with previously unattainable precision. This leads to flawless rail movement between adjacent rail joints and simplifies assembly. Furthermore, reduced wear is observed for the articulated rail connection according to the invention, which significantly increases the service life of the articulated rail connection compared to previous approaches. All of this is achieved while taking into account a moderate cost increase for the articulated rail connection compared to the previous state of the art, which is more than compensated for by the longer service life and increased safety. These are the key advantages.

[0028] The invention is explained in more detail below with reference to a drawing which merely represents an exemplary embodiment; in the drawings: Fig. 1 and 2 the articulated rail connection in a perspective overview, partially with removed components, Fig. 3 the loose bearing cheek in a perspective view, Fig. 4 the loose bearing cheek in front view with the associated calibration surfaces, Fig. 5 a fixed bearing cheek in a schematic front view, Fig. 6 another adjacent fixed bearing cheek in front view, Fig. 7 the pivot bearing blade in perspective and Fig. 8 the pivot bearing shell receiving the pivot bearing blade, also in a perspective view.

[0029] Overview Figures 1 and 2 show an articulated rail connection for rail joints 1a, 1b of profiled rails. In the example shown, the rail joints 1a, 1b have an I-shaped cross-section. This defines an upper flange 2 and a lower flange 4 forming running surfaces 3. The running surfaces 3 typically guide and move the wheels of individual carriages of a monorail. However, this is not mandatory.

[0030] According to the Fig. 1 and 2Both the upper flange 2 and the lower flange 4 each have pocket-shaped recesses 5 in their cross-section. As a result, the overall I-shaped rail joints 1a, 1b are designed with a substantially U-shaped upper flange 2 with U-legs 6 and a recess 5 arranged therebetween. The same applies to the lower flange 4, which has an inverted U-shaped profile with associated U-legs 6, which have the recess 5 between them.

[0031] It can be seen that the two adjacent rail joints 1a, 1b are equipped with an articulated connection 7, 8, 9 on the upper flange 2. The articulated connection 7, 8, 9 has at least one loose bearing cheek 7 bridging an upper joint area S. Two fixed bearing cheeks 8, 9 cooperate with the loose bearing cheek 7, which consist of the Fig. 4 and 5shown and opposite each other. The fixed bearing cheek 8 is provided on one rail joint 1a, whereas the other rail joint 1b is equipped with the further, second fixed bearing cheek 9.

[0032] Additionally, a suspension device 10, 11, 12 can be seen for attaching the rail joints 1a, 1b to a track support structure (not shown) or its ceiling. For this purpose, the suspension device 10, 11, 12 consists of a bracket 10, a rocker 11 with two rocker flanges 11a, 11b, and finally, suspension means 12. The suspension means 12 are, not limited to, suspension chains that connect the rocker 11 to the ceiling of the track support structure. The bracket 10, in turn, is articulated to the rocker 11 and additionally ensures an articulated connection to the loose bearing flange 7.

[0033] In detail, the floating bearing cheek 7 has, according to the Fig. 2 via a rotary mount 13 in which the plate 10 is mounted with a cheek pivot 10a so that it can rotate in the longitudinal direction of the rail. This is indicated by the Fig. 2 drawn double arrow. In fact, a pocket rotary mount is realized at this point because the movable bearing cheek 7 is fixed to the rail joint 1a in the area of ​​its rotary mount 13 between the two cheeks of the fixed bearing cheek 8.

[0034] The cheek pivot 10a of the link plate 10 has a bore 14, which corresponds to corresponding bores 15 in the two cheeks of the fixed bearing cheeks 8 at one rail joint 1a. In fact, a common bearing pin 16 penetrates the bores 14, 15 in question. In this way, the link plate 10 with its cheek pivot 10a is held perfectly in the rotary holder of the loose bearing cheek 7 and the Fig, 2 indicated pivoting movements are carried out essentially in one longitudinal plane of the rail.

[0035] In addition to the cheek pivot plate 10a, the bracket 10 is equipped with a swing arm pivot plate 10b, which is accommodated between the two swing arm flanges 11a, 11b of the swing arm 11. In this case, too, a rotatable bearing is realized essentially in the previously mentioned longitudinal rail plane. For this purpose, the swing arm pivot plate 10b is equipped with a bore 17, to which bores 18 in the two swing arm flanges 11a, 11b correspond. A common bearing pin 19 penetrates the aforementioned bores 17, 18, thus achieving the desired pivoting ability in both the rail and swing arm longitudinal planes.

[0036] Based on the Fig. 2 , 3 , 4It can be seen that the movable bearing cheek 7 is equipped with two axial webs 20 on both sides. The axial webs 20 engage in corresponding axial recesses 21 of the fixed bearing cheek 8 at the rail joint 1a (cf. Fig. 1 , 2 and 5 ). In this way, the loose bearing cheek 7 can be Fig. 2 The rail joints 1a, 1b are perfectly aligned in the assembly position shown in solid lines in relation to the two cheeks of the fixed bearing cheek 8. In the transport position of the rail joints 1a, 1b, however, the movable bearing cheek 7 takes the position shown in dotted lines in the Fig. 2 indicated position.

[0037] In order to be able to assume both the assembly and transport positions without any problems, one or more positioning webs 22 may be additionally implemented on the base side of the floating bearing cheek 7, which engage in a corresponding positioning recess 23 in the upper flange 2 or in the corresponding recess 5. However, this is not mandatory because the Fig. 3 The loose bearing cheek 7 shown in a perspective view does not have such positioning webs 22 and does not have to have them for the following reasons.

[0038] In addition to the rotary holder 13, the movable bearing cheek 7 also has a stop tongue 24 connected to the rotary holder 13. The stop tongue 24 in turn carries a guide pin 25, which engages in curved slots 26 of the two cheeks on the bearing cheek 9 at the other rail joint 1b (cf. Fig. 2 and 3 ). The slots 26 are curved so that the Fig. 1 The rotational movements of the rail joints 1a, 1b relative to one another, indicated by a double arrow, around a pivot point D in the area of ​​the lower flange 4 or below it or a corresponding rotation axis D can be carried out without tilting.

[0039] In addition, the overview shows the Fig. 1 and 2another lower joint connection 28, 29. The lower joint connection 28, 29 essentially consists of a in detail and additionally in the Fig. 7 shown pivot bearing blade 28 and additionally a pivot bearing shell 29, which in itself is the subject of the Fig. 8 is. The joint connection parts relevant in detail and for the respective joint connection 7, 8, 9 or 28, 29, that is to say essentially the loose bearing cheek 7, the pivot bearing shell 29 and the pivot bearing blade 28 as well as the cheeks or the two fixed bearing cheeks 8, 9 are all forged or drop forged.

[0040] According to the invention, a further special feature is that the forged joint connection part 7, 8, 9, 28 in question is additionally at least partially calibrated. This means that the joint connection part 7, 8, 9, 28 in question has at least one calibrated surface 30, 31. In the context of the illustrated example and not by way of limitation, the calibrated surface 30, 31 is a calibrated centering surface 30, as shown in the Fig. 4 and 5 is shown in detail. In fact, at this point, the movable bearing cheek 7, as well as the fixed bearing cheek 8 that accommodates the movable bearing cheek 7, are equipped with one or more calibrated centering surfaces 30.

[0041] Alternatively or additionally, the calibrated surface 30, 31 can also be designed as a calibrated contact surface 31, as is the subject of the Fig. 6 within the framework of the upper joint connection 7, 8, 9. In fact, the calibrated contact surface 31 is located on the fixed bearing cheek 9 and, according to the exemplary embodiment, interacts with the stop tongue 24 of the floating bearing cheek 7. In contrast, the pivot bearing shell 29 is not equipped with a calibrated surface 30, 31, which is nevertheless possible.

[0042] If one looks at the lower joint connection 28, 29 according to the Fig. 7 , 8 , calibrated contact surfaces 31 are provided in this context, specifically on the pivot bearing blade 28 according to the exemplary embodiment and opposite each other. This, of course, applies only as an example, as did the previous explanations.

[0043] Either way, the respective calibrated surface 30, 31 is created by a machining process following the forging or drop forging process. This machining process is called surface pressing. The surface pressing is carried out with a predetermined pressure, usually using a correspondingly shaped press die, which deforms and "represses" the respective calibrated surface 30, 31 in the desired manner. According to the invention, this repressing means that, following the forging or drop forging process, a targeted compressive deformation follows, thus creating the respective calibrated surface 30, 31. Compressive deformation implies that the respective calibrated surface 30, 31 deviates from its target specifications during drop forging and can be brought closer to the target specifications through the additional compressive deformation.

[0044] This is achieved by using a press ram adapted to the size of the calibrated surface. This press ram is moved until the desired surface pressure is reached in the area of ​​the calibrated surface 30, 31. This can be supplemented by a control system in such a way that the press ram is moved until the calibrated surface 30, 31 reaches a certain target size, as already explained. For example, this corresponds to the Fig. 7 The pivot bearing blade shown with the two opposing calibration surfaces 31 ensures that the respective calibration surfaces 31 are not only aligned exactly parallel to each other, but also exhibit a particularly high degree of dimensional accuracy with regard to their spacing. This dimensional accuracy can reach values ​​with a tolerance of a few tenths of a millimeter, which in the example case is less than 0.2 mm.

[0045] Corresponding guide surfaces 32 on the pivot bearing blade 28 can also be realized and implemented with particularly accurate dimensions with respect to the set radius. Dimensional accuracy for the radius is monitored, taking into account a maximum tolerance of 0.4 mm. This is also achieved by a target / actual value comparison in accordance with the described control.

[0046] In addition to the pivot bearing blade 28, which is equipped with the two opposing calibration surfaces 31 that interact with corresponding stops 33 of the pivot bearing shell 29, and the previously discussed arcuate guide surface 32 on a pivot lug 34 of the pivot bearing blade 28, it should be noted that the pivot bearing blade 28 is additionally equipped with lateral fins or projections 35. These fins or projections 35 prevent any weld metal from entering the area of ​​the opposing calibration surfaces 31 when welding the pivot bearing blade 28 into the recess 5 of the lower flange 4.

[0047] Based on the detailed representation in the Fig. 3 and 4It can be seen that the floating bearing cheek 7 is also equipped with two opposing calibration surfaces 30. The two calibration surfaces 30 are located on the axial webs 22, each on the head side. It can be seen that the head-side inclined surfaces of these axial webs 22 are designed as respective calibration surfaces 30, specifically as centering surfaces 30.

[0048] The fixed bearing cheek 8, which accommodates the loose bearing cheek 7, or its opposite cheeks, also Fig. 5 is or are equipped with associated centering surfaces 30, specifically in the region of their axial recess 21 receiving the axial webs 22. The centering surfaces 30 are also located on the head side of this axial recess 21. In this way, the invention takes into account the fact that at this point it is mainly a matter of a play-free head-side connection of the loose bearing cheek 7 with the associated fixed bearing cheek 8. This is necessary in order to properly absorb forces acting on the loose bearing cheek 7 from the suspension device 10, 11, 12, which generate a torque on the loose bearing cheek 7 with respect to the axis defined by the bolt 25.

[0049] Based on the illustration in the Fig. 6one can see that the fixed bearing cheek 9 is also equipped with a calibrated surface 31 in the form of a contact surface 31 there. In fact, the stop tongue 24 of the floating bearing cheek 7 rests against the calibrated contact surface 31 in question, namely against the arc-shaped counter-stop 27 of the fixed bearing cheek 9 realized in this way, and in this context enables the previously described pivoting movements about the pivot point or the rotation axis D. For this purpose, the calibrated contact surface 31 on the fixed bearing cheek 9 is again equipped with a tolerance of less than 0.2 mm in the example case with regard to the radius set at this point.Such tolerances of a few tenths of a millimeter, up to a maximum of four tenths of a millimeter as described, can only be realized and implemented in the drop-forged individual joint connection parts, namely the floating bearing flange 7, the pivot bearing blade 28, and also the fixed bearing flanges 8, 9, if the relevant surfaces 30, 31 are calibrated as described. This means that the surfaces 30, 31 are each calibrated surfaces 30, 31, which are "pressed" by a machining process following the drop-forging process using a press die.

Claims

1. Articulated rail connection for rail joints (1a, 1b) of profiled rails, wherein in the upper joint area of ​​adjacent rail joints (1a, 1b) an upper articulated connection (7, 8, 9) with at least one articulated connection part (7, 8, 9), for example a loose bearing cheek (7) bridging the joint area (S), is provided, wherein further in the lower joint area (S) of adjacent rail joints (1a, 1b) a lower articulated connection (28, 29) with in particular a pivot bearing shell (29) and a pivot bearing blade (28) engaging therein is realized as further articulated connection parts (28, 29), and wherein at least individual articulated connection parts (7, 8, 9, 28) are forged, in particular drop-forged, characterized in that the forged joint connection part (7, 8, 9, 28) is additionally at least partially calibrated.

2. Compound according to claim 1, characterized in that the articulated connecting part (7, 8, 9, 28) has at least one calibrated surface (30, 31).

3. Compound according to claim 1 or 2, characterized in that the calibrated surface (30, 31) is produced by a machining operation following the forging.

4. Connection according to claim 3, characterized in that the machining process involves surface pressure.

5. Connection according to claim 4, characterized in that the surface pressure is applied with a specified pressure.

6. A compound according to claim 4 or 5, characterized in that the surface pressure is carried out in the sense of a control process up to a certain deformation path.

7. A compound according to any one of claims 4 to 6, characterized in that a press stamp is used for surface pressing.

8. A compound according to any one of claims 1 to 7, characterized in that the pivot bearing blade (28) is equipped with two opposing calibration surfaces (31) which interact with corresponding stops (33) of the pivot bearing shell (29).

9. A compound according to any one of claims 1 to 8, characterized in that the pivot bearing blade (28) is equipped with two further opposing calibration surfaces (31) on curved guide surfaces (32) of its pivot nose (34), which interact with corresponding guide surfaces (32) on the pivot bearing shell (29).

10. A compound according to any one of claims 1 to 9, characterized in that the loose bearing cheek (7) is equipped with opposing calibration surfaces (30) on axial webs (20).

11. A compound according to claim 10, characterized in that the calibration surfaces (30) on the axial webs (20) of the loose bearing cheek (7) correspond to calibration surfaces (30) on the associated axial recess (21) in a corresponding fixed bearing cheek (8).

12. A compound according to any one of claims 1 to 11, characterized in that the fixed bearing cheek (8, 9) has a further calibration surface (31).

13. A compound according to any one of claims 1 to 12, characterized in thatthe floating bearing cheek (7) is made of a tempering steel, in particular drill steel.

14. A method for producing an articulated rail connection for rail joints (1a, 1b) of profiled rails, wherein an upper articulated connection (7, 8, 9) with at least one articulated connection part (7, 8, 9), for example a loose bearing cheek (7) bridging the joint area (S), is provided in the upper joint area (S) of adjacent rail joints (1a, 1b), wherein furthermore in the lower joint area (S) of the adjacent rail joints (1a, 1b) a lower articulated connection (28, 29) with in particular a pivot bearing shell (29) and a pivot bearing blade (28) engaging therein is realized as further articulated connection parts (28, 29), and wherein at least individual articulated connection parts (7, 8, 9, 28) are forged, in particular drop forged, characterized in that the forged joint connection part (7, 8, 9, 28) is additionally at least partially calibrated.

15. Method according to claim 14, characterized in that the joint connection part (7, 8, 9, 28) is forged, deburred and then calibrated.

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