Transmission mechanism

Abstract

The gear train of claim 1, wherein the gear train has a first gear connected to a first gear and a second gear connected to a second gear, wherein the gear train has a first gear connected to a first gear and a second gear connected to a second gear.

Description

Technical Field

[0001] The present invention relates to a transmission mechanism, comprising a transmission mechanism housing, a drive shaft rotatably supported in the transmission mechanism housing by means of a first bearing device, and a driven shaft rotatably supported in the transmission mechanism housing by means of a second bearing device, and a setting device, wherein the drive shaft has a first bevel gear, the driven shaft has a second bevel gear meshingly engaged with the first bevel gear, and the setting device is used to set the tooth edge clearance between the first bevel gear and the second bevel gear by axially adjusting the first bevel gear and / or the second bevel gear. Background Art

[0002] DE 34 48 526 C2 describes an actuator having a gear head, which has at least one bevel gear on the drive side and a bevel gear on the output side, which meshes with the bevel gear on the drive side. Summary of the invention

[0003] The object of the present invention is to provide a gear mechanism in which the tooth flank clearance between the first bevel gear and the second bevel gear can be set particularly accurately and in particular in a simple manner.

[0004] According to the present invention, this object is achieved by a transmission mechanism, which has a transmission mechanism housing, a drive shaft rotatably supported in the transmission mechanism housing by means of a first bearing device, and a driven shaft rotatably supported in the transmission mechanism housing by means of a second bearing device, and a setting device, wherein the drive shaft has a first bevel gear, the driven shaft has a second bevel gear meshingly engaged with the first bevel gear, and the setting device is used to set the tooth edge clearance between the first bevel gear and the second bevel gear by axially adjusting the first bevel gear and / or the second bevel gear, wherein the setting device includes a rolling bearing, the rolling bearing having an inner ring fixedly connected to the drive shaft or the driven shaft and an outer ring supported in the transmission mechanism housing in an axially adjustable manner, wherein the axial position of the outer ring of the rolling bearing can be set by means of a threaded device, the threaded device having an internal thread fixed in the transmission mechanism housing and an external thread cooperating with the internal thread, the external thread being constructed on an adjusting nut of the setting device, and the outer ring being supported on the adjusting nut.

[0005] For optimal operation, the bevel gear pairs have defined pressure curves and backlash. Since both the bevel gears themselves and other structural components have tolerances due to the manufacturing process, optimal operation can only be achieved through the setting process during assembly.

[0006] Traditionally, adjusting shims are installed at suitable locations in the mechanical connection of the bevel gears so that the bevel gears can be moved axially in their position by adding or removing adjusting shims. The disadvantage of this method is that all participating components need to be precisely measured to obtain the installation dimensions, and the setting accuracy is limited by the thickness of the adjusting shims.

[0007] A more precise setting of the backlash can be achieved by axially feeding at least one of the two bevel gears by rotating the thread. This allows a stepless setting, a more precise setting dimension, a process that is easier to install, and eliminates the need for precise measurement of the component.

[0008] When setting bevel gears with the aid of threads, it is critical that the axial position is difficult to fix after the feed is completed. One possibility is to preload the threaded mating part. The preload force must be significantly higher than the occurring, especially axial, loads in order to prevent undesired rotation on the thread.

[0009] Since the setting device includes a rolling bearing, the rolling bearing has an inner ring fixedly connected to the drive shaft or the driven shaft and an outer ring supported in the transmission mechanism housing in an axially adjustable manner, wherein the axial position of the outer ring of the rolling bearing can be set by means of a threaded device, the threaded device has an internal thread fixed in the transmission mechanism housing and an external thread cooperating with the internal thread, the external thread is constructed on an adjusting nut of the setting device, and the outer ring is supported on the adjusting nut, thereby providing a transmission mechanism in which the tooth edge clearance between the first bevel gear and the second bevel gear can be set particularly accurately and in a particularly simple manner.

[0010] According to the invention, the bevel gear to be set can be set by means of an adjustable rolling bearing. In a special embodiment, this can be achieved, for example, by means of a fixed-loose bearing. This allows the position of the bevel gear on the fixed bearing to be set. In this solution, the fixed bearing is fixed in a support flange, which has a thread on the outer diameter. The bevel gear is thus advanced by rotating the support flange. The pitch of the thread is selected to be very small, for example 1 mm, in order to achieve the finest possible setting of the tooth gap.

[0011] After the bevel gear is set, the clamping / centering flange is screwed into the surrounding structure. On the one hand, the second clamping / centering flange is used to clamp the support flange. The centering flange presses the support flange into the thread of the centering flange on the outer ring, thereby clamping the support flange and thus preventing undesired rotation.

[0012] The threads used to set the bevel gears may have tolerances and play due to their function and the manufacturing process. The axial play is therefore eliminated by clamping. The radial play or radial run-out of the bevel gear can be corrected by the second function of the centering flange. By means of the selected fit between the centering flange, the structure and the support flange, the support flange and thus the bevel gear are centered in the desired radial position when the centering device is installed.

[0013] In a basic embodiment, the adjusting nut can have a bearing ring seat in which the outer ring of the rolling bearing is axially fixed, wherein the adjusting nut has a housing wall on which an outer thread is formed which interacts with an inner thread of the gear housing.

[0014] In a basic embodiment, the thread arrangement, in particular the internal thread of the gear housing and the external thread of the adjusting nut, can optionally be designed as a fine thread, in particular as a fine thread with a pitch of 1.0, 0.75 or 0.5.

[0015] In a basic embodiment, the setting device can have a clamping flange, which is fixed to a flange seat of the transmission housing by means of flange bolts and, in its fixed arrangement, axially tensions and / or clamps the adjusting nut on the flange seat of the transmission housing, thereby preventing the threaded device, in particular the internal thread of the transmission housing and the external thread of the adjusting nut, from automatically loosening.

[0016] In a basic embodiment, the clamping flange may optionally include a cylindrical inner circumferential wall, which acts together with a corresponding cylindrical outer circumferential wall on the adjusting nut so that the connection between the inner circumferential wall and the outer circumferential wall forms a first fit, which first fit centers the adjusting nut relative to the clamping flange, wherein the clamping flange also has a cylindrical outer circumferential wall, which acts together with a corresponding cylindrical inner circumferential wall on the transmission mechanism housing so that the connection between the outer circumferential wall and the inner circumferential wall forms a second fit, and the second fit centers the clamping flange relative to the transmission mechanism housing.

[0017] In a basic embodiment, the adjusting nut can optionally have an actuation contour which is designed for manually rotating the adjusting nut in the internal thread of the transmission housing by hand or for rotating the adjusting nut in the internal thread of the transmission housing by means of a hand tool, in particular a flange wrench.

[0018] In a special first alternative embodiment, in order to form a setting device, the first bearing device can have a first rolling bearing that supports axial force, the first rolling bearing having a first inner ring fixedly connected to the drive shaft and a first outer ring supported in an axially adjustable manner in the transmission mechanism housing, wherein the axial position of the first outer ring of the first rolling bearing can be set by means of a first thread device, the first thread device having a first internal thread fixed in the transmission mechanism housing and a first external thread that acts together with the first internal thread, the first external thread being constructed on a first adjusting nut, and the first outer ring being supported on the first adjusting nut.

[0019] In a first alternative embodiment, the first adjusting nut can have a first bearing ring seat, in which the first outer ring of the first rolling bearing is axially fixed, and the first adjusting nut has a first housing wall, on which a first external thread that interacts with the first internal thread of the transmission housing is formed.

[0020] In a first alternative embodiment, the first thread arrangement, in particular the first internal thread of the gear housing and the first external thread of the first adjusting nut can optionally be designed as a fine thread, in particular as a fine thread with a pitch of 1.0, 0.75 or 0.5.

[0021] In a first alternative embodiment, the setting device may have a first clamping flange, which is fixed to a first flange seat of the transmission housing by means of first flange bolts, and in the arrangement of the first clamping flange fixed to the first flange seat of the transmission housing, the first adjusting nut is axially tensioned and / or clamped, thereby preventing the first threaded device, in particular the first internal thread of the transmission housing and the first external thread of the first adjusting nut from automatically loosening.

[0022] In a first alternative embodiment, the first clamping flange may have a cylindrical inner circumferential wall, which acts together with a corresponding cylindrical outer circumferential wall on the first adjusting nut so that the connection between the inner circumferential wall and the outer circumferential wall forms a first fit, and the first fit centers the first adjusting nut relative to the first clamping flange, wherein the first clamping flange also has a cylindrical outer circumferential wall, which acts together with a corresponding cylindrical inner circumferential wall on the transmission mechanism housing so that the connection between the outer circumferential wall and the inner circumferential wall forms a second fit, and the second fit centers the first clamping flange relative to the transmission mechanism housing.

[0023] In a first alternative embodiment, the first adjusting nut can optionally have a first operating contour, which is configured to be used to manually rotate the first adjusting nut in the first internal thread of the transmission housing by hand, or to rotate the first adjusting nut in the first internal thread of the transmission housing by means of a manual tool, in particular a flange wrench.

[0024] In a special, second alternative embodiment, in order to form a setting device, the second bearing device can have a second rolling bearing that supports axial force, the second rolling bearing having a second inner ring fixedly connected to the driven shaft and a second outer ring supported in an axially adjustable manner in the transmission mechanism housing, wherein the axial position of the second outer ring of the second rolling bearing can be set by means of a second thread device, the second thread device having a second internal thread fixed in the transmission mechanism housing and a second external thread that acts together with the second internal thread, the second external thread being constructed on a second adjusting nut, and the second outer ring being supported on the second adjusting nut.

[0025] In a second alternative embodiment, the second adjusting nut can have a second bearing ring seat, in which the second outer ring of the second rolling bearing is axially fixed, and the second adjusting nut has a second housing wall, on which a second external thread that interacts with the second internal thread of the transmission housing is formed.

[0026] In a second alternative embodiment, the second thread arrangement, in particular the second internal thread of the gear housing and the second external thread of the second adjusting nut can optionally be designed as a fine thread, in particular as a fine thread with a pitch of 1.0, 0.75 or 0.5.

[0027] In a second alternative embodiment, the setting device may have a second clamping flange, which is fixed to a second flange seat of the transmission housing by means of second flange bolts, and in the arrangement of the second clamping flange fixed to the second flange seat of the transmission housing, the second adjusting nut is axially tensioned and / or clamped, thereby preventing the second threaded device, in particular the second internal thread of the transmission housing and the second external thread of the second adjusting nut from automatically loosening.

[0028] In a second alternative embodiment, the second clamping flange can have a cylindrical inner circumferential wall, which acts together with a corresponding cylindrical outer circumferential wall on the second adjusting nut so that the connection between the inner circumferential wall and the outer circumferential wall forms a first fit, and the first fit centers the second adjusting nut relative to the second clamping flange, wherein the second clamping flange also has a cylindrical outer circumferential wall, which acts together with a corresponding cylindrical inner circumferential wall on the transmission mechanism housing so that the connection between the outer circumferential wall and the inner circumferential wall forms a second fit, and the second fit centers the second clamping flange relative to the transmission mechanism housing.

[0029] In a second alternative embodiment, the second adjusting nut can optionally have a second operating contour, which is configured to manually rotate the second adjusting nut in the second internal thread of the transmission housing by hand, or to rotate the second adjusting nut in the second internal thread of the transmission housing by means of a manual tool, in particular a flange wrench.

[0030] The first alternative embodiment may be combined with the second alternative embodiment, or may be combined in different specific implementation combinations.

[0031] In a third embodiment, the adjusting nut may have an end ring wall, on which the outer ring is supported with its first end side, wherein a second end side of the outer ring opposite to the first end side faces a shoulder on the transmission mechanism housing, and wherein a clamping spring device is inserted in an annular gap constructed between the second end side of the outer ring and the shoulder, and the clamping spring device is constructed to clamp the outer ring axially toward the end ring wall of the adjusting nut.

[0032] The bevel gear under consideration can also be supported in this third embodiment using a fixed-loose bearing. This allows the position of the bevel gear on the fixed bearing to be adjusted. In this exemplary solution, the fixed bearing is moved on the outer ring instead of the inner ring, because the diameter is larger here and a clamping spring with a greater force can therefore be selected. The radial installation space for the clamping spring is usually limited by the outer diameter of the fixed bearing and inwardly by the diameter of the bevel gear. The axial installation space is usually limited by the distance between the fixed bearing and the floating bearing.

[0033] The small difference from the inner diameter to the outer diameter in the available installation space makes the selection of a suitable disc spring difficult. Due to the large number of components, a single disc spring cannot compensate for the tolerances that occur with certainty. On the other hand, relatively more axial installation space is usually available. For these reasons, it can make sense to use, for example, a helical spring, i.e. a spring coil, according to the invention. In the present solution, at least one wave spring can also be used, especially since a wave spring generates a higher preload force than a helical spring at the same load height.

[0034] The bevel gear itself is fed via a ring with an external thread. The pitch of the thread can be chosen to be very small, for example 1 mm, in order to be able to set the backlash as finely as possible.

[0035] In a third embodiment, the clamping spring device can be formed by at least one wave spring, in particular a wave spring package comprising a plurality of wave springs arranged axially one above the other.

[0036] As an alternative to a wave spring, the clamping spring device can be formed by at least one spring spiral or at least one disk spring.

[0037] In a third embodiment, the adjusting nut can have a housing wall, on which an external thread is formed which interacts with an internal thread of the gear housing.

[0038] In a third embodiment, the thread arrangement, in particular the internal thread of the gear housing and the external thread of the adjusting nut, can also be optionally designed as a fine thread, in particular as a fine thread with a pitch of 1.0, 0.75 or 0.5.

[0039] In a third embodiment, in order to form a setting device, the first bearing device can have a first rolling bearing that supports axial force, the first rolling bearing having a first inner ring fixedly connected to the drive shaft and a first outer ring supported in an axially adjustable manner in a transmission mechanism housing, wherein the axial position of the first outer ring of the first rolling bearing can be set by means of a first thread device, the first thread device having a first internal thread fixed in the transmission mechanism housing and a first external thread cooperating with the first internal thread, the first external thread being constructed on a first adjusting nut, the first adjusting nut having a first end ring wall, the first outer ring being supported on the first end ring wall with its first end side and the second end side of the first outer ring opposite to the first end side facing a shoulder on the transmission mechanism housing, wherein a first clamping spring device is inserted in a first annular gap constructed between the second end side and the shoulder of the first outer ring, the first clamping spring device being constructed for clamping the first outer ring axially toward the end ring wall of the first adjusting nut.

[0040] The first clamping spring device can be formed, for example, by at least one wave spring, in particular a wave spring package comprising a plurality of wave springs arranged one above the other in the axial direction.

[0041] However, the first clamping spring device can also be formed by at least one spring coil.

[0042] The first adjusting nut can have a housing wall, on which a first external thread is formed which interacts with a first internal thread of the gear housing.

[0043] The first thread arrangement, in particular the first internal thread of the gear housing and the first external thread of the first adjusting nut, can optionally be designed as a fine thread, in particular as a fine thread with a pitch of 1.0, 0.75 or 0.5.

[0044] In a third embodiment, as an alternative or supplement to the first bearing device for forming a setting device, the second bearing device may also have a second rolling bearing that supports axial force, the second rolling bearing having a second inner ring fixedly connected to the driven shaft and a second outer ring axially adjustably supported in the transmission mechanism housing, wherein the axial position of the second outer ring of the second rolling bearing can be set by means of a second thread device, the second thread device having a second internal thread fixed in the transmission mechanism housing and a second external thread cooperating with the second internal thread, the second external thread being constructed on a second adjusting nut, the second adjusting nut having a second end ring wall, the second outer ring being supported on the second end ring wall with its first end side and the second end side of the second outer ring opposite to the first end side facing a shoulder on the transmission mechanism housing, wherein a second clamping spring device is inserted in a second annular gap constructed between the second end side of the second outer ring and the shoulder, the second clamping spring device being constructed for clamping the second outer ring axially toward the end ring wall of the second adjusting nut.

[0045] The second clamping spring device can be formed, for example, by at least one wave spring, in particular a wave spring package comprising a plurality of wave springs arranged one above the other in the axial direction.

[0046] However, the second clamping spring device can also be formed by at least one spring coil.

[0047] The second adjusting nut can have a housing wall, on which a second external thread is formed which interacts with a second internal thread of the gear housing.

[0048] The second thread arrangement, in particular the second internal thread of the gear mechanism housing and the second external thread of the second adjusting nut, can optionally be designed as a fine thread, in particular as a fine thread with a pitch of 1.0, 0.75 or 0.5.

[0049] In all described embodiment variants, the rolling bearing, in particular the first rolling bearing and / or the second rolling bearing can each be designed as a double-row angular contact ball bearing, in particular as a double-row angular contact ball bearing in an O-shaped arrangement.

[0050] In all described embodiment variants, the rolling bearing, in particular the first rolling bearing and / or the second rolling bearing, can each be designed as a fixed bearing of a first bearing arrangement and / or a second bearing arrangement.

[0051] In the following description of the drawings, specific embodiments of the invention are explained in more detail with reference to the drawings. The specific features of these exemplary embodiments can represent general features of the invention independently of the specific relationship in which they are mentioned, if necessary also individually or also in other combinations of features. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] The accompanying drawings show:

[0053] Figure 1 shows a perspective view of an exemplary robot arm having internal transmission mechanisms configured to move joints of the robot arm,

[0054] Figure 2 shows an exploded view of a first embodiment of a transmission mechanism according to the present invention,

[0055] Figure 3 Shows the basis for assembly Figure 2 A diagram of a first embodiment of a transmission mechanism, and

[0056] Figure 4 The diagram shows a second specific embodiment of the transmission according to the invention. DETAILED DESCRIPTION

[0057] Figure 1 An industrial robot 1 is shown which has a robot arm 2 and a robot controller 10. In the present exemplary embodiment, the robot arm 2 comprises a plurality of joints G1 to G7 which are arranged one behind the other and are rotatably connected to one another by means of joints L1 to L6.

[0058] The industrial robot 1 has: a robot controller 10, which is constructed to execute a robot program; and a robot arm 2, which has a plurality of joints G1-G7, which are connected by joints L1-L6, and these joints are constructed to automatically adjust the joints G1-G7 to each other according to the robot program, wherein one of the plurality of joints G1-G7 forms an end joint (G7) of the robot arm 2 with a tool flange 8.

[0059] The robot controller 10 of the industrial robot 1 is constructed or arranged to execute a robot program, by which the joints L1 to L6 of the robot arm 2 can be adjusted or rotated automatically according to the robot program or automatically in manual driving operation. For this purpose, the robot controller 10 is connected to a controllable electric drive, which is designed to adjust the joints L1 to L6 of the industrial robot 1.

[0060] In the present exemplary embodiment, the members G1 to G7 are a robot base 3 and a rotary device 4 which is rotatably mounted relative to the robot base 3 about an axis A1 extending vertically. The other members of the robot arm 2 include a rocker arm 5, an arm extension 6 and a preferably multi-axial robot hand 7 which has a fastening device for fastening a tool designed as a tool flange 8. The rocker arm 5 is pivotally mounted on the rotary device 4 at the lower end, i.e. at a joint L2 of the rocker arm 5 which can also be referred to as a rocker arm bearing head, about a preferably horizontal axis of rotation A2.

[0061] At the upper end of the rocker arm 5, an arm extension 6 is again pivotably mounted on the first joint L3 of the rocker arm 5 about an axis A3 which is also preferably horizontal. The arm extension carries a robot hand 7 with its preferably three rotation axes A4, A5, A6 at the end. The joints L1 to L6 can each be driven by one of the electric drives in a program-controlled manner by the robot controller 10.

[0062] The robot arm 2 accordingly has a plurality of joints G1 to G7 and joints L1 to L6 which connect the joints G1 to G7 to one another in an adjustable manner, wherein one of the joints G1 forms the robot frame 3 .

[0063] In the present embodiment, the robot arm 2 has at least one transmission mechanism as described below.

[0064] Figure 2 and Figure 3 A first specific embodiment of an exemplary transmission 11 is shown.

[0065] The transmission 11 has a transmission housing 12. The drive shaft 13 is rotatably supported in the transmission housing 12 by means of a first bearing device 14.1. The first bearing device 14.1 has a first bevel gear 15.1. In addition, the driven shaft 16 is rotatably supported in the transmission housing 12 by means of a second bearing device 14.2. The second bearing device 14.2 has a second bevel gear 15.2, which meshes with the first bevel gear 15.1.

[0066] Furthermore, the transmission 11 has at least one setting device 17 according to the invention.

[0067] like Figure 2 and Figure 3 As shown, only the first bearing device 14.1 of the first bevel gear 15.1 can be provided with a setting device 17 according to the invention. Alternatively, instead of the first bearing device 14.1 with the first bevel gear 15.1, the second bearing device 14.2 with the second bevel gear 15.2 can have a setting device 17 according to the invention. If necessary, it can also be meaningful that both the first bearing device 14.1 with the first bevel gear 15.1 and the second bearing device 14.2 with the second bevel gear 15.2 each have their own setting device 17 according to the invention. However, the setting device 17 according to the invention is shown and described below only with the help of the first bearing device 14.1 with the first bevel gear 15.1. However, the description with respect to the first bearing device 14.1 can also be applied in the same sense to the use on the second bearing device 14.2. The setting device 17 according to the invention can be selectively constructed at the drive shaft 13 and / or the output shaft 16 accordingly.

[0068] The setting device 17 according to the invention is used to set the tooth clearance between the first bevel gear 15.1 and the second bevel gear 15.2 by axially adjusting the first bevel gear 15.1. The setting device 17 comprises a first rolling bearing 18.1, which is constructed on the first bearing device 14.1 and is constructed to support at least axial forces. The first rolling bearing 18.1 has a first inner ring 19.1 fixedly connected to the drive shaft 13 and a first outer ring 20.1 supported in an axially adjustable manner in the transmission housing 12. The axial position of the first outer ring 20.1 of the first rolling bearing 18.1 can be set by means of a first thread device 21.1, which has a first inner thread 22.1 fixed in the transmission housing 12 and a first outer thread 23.1 cooperating with the first inner thread 22.1, the first outer thread being constructed on a first adjusting nut 24.1, on which the first outer ring 20.1 is supported.

[0069] The first adjusting nut 24.1 has a first bearing ring seat 25.1 in which the first outer ring 20.1 of the first rolling bearing 18.1 is axially fixed, and the first adjusting nut 24.1 has a first housing wall on which a first outer thread 23.1 is formed that cooperates with a first inner thread 22.1 of the transmission housing 12. The first outer ring 20.1 of the first rolling bearing 18.1 can be axially fixed in the bearing ring seat 25.1 by means of a stop shoulder 26 and a spring washer 27.

[0070] The first thread arrangement 21 . 1 , in particular the first internal thread 22 . 1 of the gear housing 12 and the first external thread 23 . 1 of the first adjusting nut 24 . 1 , can be designed as a fine thread, in particular as a fine thread with a pitch of 1.0, 0.75 or 0.5.

[0071] In the present embodiment, the setting device 17 comprises a first clamping flange 28.1, which is fixed by means of first flange bolts 29.1 to a first flange seat 30.1 of the transmission housing 12. In the arrangement in which the first clamping flange is fixed to the first flange seat 30.1, the first adjusting nut 24.1 is axially tensioned and / or clamped relative to the transmission housing 12, thereby preventing the first threaded device 21.1, in particular the first internal thread 22.1 of the transmission housing 12 and the first external thread 23.1 of the first adjusting nut 24.1 from automatically loosening.

[0072] In the case of the present embodiment, the first clamping flange 28.1 has a cylindrical inner peripheral wall 31.1, which cooperates with a corresponding cylindrical outer peripheral wall 32.1 on the first adjusting nut 24.1, so that the connection between the inner peripheral wall 31.1 and the outer peripheral wall 32.1 forms a first fit, which centers the first adjusting nut 24.1 relative to the first clamping flange 28.1. In the case of the present embodiment, the first clamping flange 28.1 has a cylindrical outer peripheral wall 33.1, which cooperates with a corresponding cylindrical inner peripheral wall 34.1 on the transmission housing 12, so that the connection between the outer peripheral wall 33.1 and the inner peripheral wall 34.1 forms a second fit, which centers the first clamping flange 28.1 relative to the transmission housing 12.

[0073] The first adjusting nut 24.1 additionally has at least one first operating contour 35, which is designed for manually rotating the first adjusting nut 24.1 in the first internal thread 22.1 of the transmission housing 12, for example by means of a hand tool, in particular a flange spanner. In this regard, the at least one first operating contour 35 can be formed, for example, by two opposite end holes of the first adjusting nut 24.1, into which corresponding pins of the flange spanner can be inserted. A flange spanner can also be referred to as a end hole spanner.

[0074] Figure 4 A second specific embodiment of an exemplary transmission 11 or a second basic embodiment variant of a setting device 17 according to the invention is shown. The transmission 11 comprises a transmission housing 12 and a first bevel gear 15.1 which meshes with a second bevel gear 15.2.

[0075] The rolling bearing 18.2 has an inner ring 19.2 fixedly connected to the drive shaft 13 and an outer ring 20.2 axially adjustable in the gear housing 12. The axial position of the outer ring 20.2 of the rolling bearing 18.2 can be set by means of a first thread device 21.2, which has an inner thread 22.2 fixed in the gear housing 12 and an outer thread 23.2 cooperating with the inner thread 22.2, which is formed on an adjusting nut 24.2 on which the outer ring 20.2 is mounted.

[0076] In a second embodiment variant, the adjusting nut 24.2 has an end ring wall 40, on which the outer ring 20.2 of the rolling bearing 18.2 is supported with its first end side, and a second end side of the outer ring 20.2 opposite to the first end side faces a shoulder 41 on the transmission housing 12, wherein a clamping spring device 42 is inserted in an annular gap, which is constructed between the second end side of the outer ring 20.2 and the shoulder 41, and the clamping spring device is constructed to clamp the outer ring 20.2 axially toward the end ring wall 40 of the adjusting nut 24.2.

[0077] In the present exemplary embodiment, the clamping spring device 42 is formed by a wave spring. Instead of a wave spring, the clamping spring device 42 can also alternatively be formed as at least one spring spiral or at least one disc spring or a disc spring assembly.

[0078] The adjusting nut 24 . 2 has a housing wall on which an external thread 23 . 2 is formed which interacts with the internal thread 22 . 2 of the gear housing 12 .

[0079] In the present exemplary embodiment, the thread arrangement 21.2, in particular the internal thread 22.2 of the gear housing 12 and the external thread 23.2 of the adjusting nut 24.2 are designed as fine threads, in particular as fine threads with a pitch of 1.0, 0.75 or 0.5.

[0080] In all embodiment variants, the respective rolling bearing can be designed as a double-row angular contact ball bearing, in particular as a double-row angular contact ball bearing in an O-shaped arrangement.

[0081] In all embodiments, the respective rolling bearing can be designed as a fixed bearing of a fixed-release bearing arrangement, as in particular in Figures 2 to 4 Thus, a corresponding rolling bearing supported by a corresponding adjusting nut according to the invention can form a fixed bearing, and in this case the fixed-loose bearing arrangement is supplemented by a separate floating bearing 43 .

Claims

1. A transmission mechanism, comprising a transmission mechanism housing, a drive shaft rotatably supported in the transmission mechanism housing by means of a first bearing device, a driven shaft rotatably supported in the transmission mechanism housing by means of a second bearing device, and a setting device, wherein the drive shaft has a first bevel gear, the driven shaft has a second bevel gear meshingly engaged with the first bevel gear, the setting device is used to set the tooth edge clearance between the first bevel gear and the second bevel gear by axially adjusting the first bevel gear and / or the second bevel gear, characterized in that The setting device comprises a rolling bearing, the rolling bearing having an inner ring fixedly connected to the drive shaft or the driven shaft and an outer ring supported in the transmission mechanism housing in an axially adjustable manner, wherein the axial position of the outer ring of the rolling bearing can be set by means of a threaded device, the threaded device having an internal thread fixed in the transmission mechanism housing and an external thread cooperating with the internal thread, the external thread being constructed on an adjusting nut of the setting device, the outer ring being supported on the adjusting nut, wherein the setting device has a clamping flange, the clamping flange being fixed to a flange seat of the transmission mechanism housing by means of flange bolts, and In the arrangement fixed on the flange seat of the transmission mechanism housing, the adjusting nut is axially tensioned and / or clamped and has a cylindrical inner circumferential wall, which acts together with a corresponding cylindrical outer circumferential wall on the adjusting nut so that the connection between the inner circumferential wall and the outer circumferential wall forms a first fit, which centers the adjusting nut relative to the clamping flange, and the clamping flange has a cylindrical outer circumferential wall, which acts together with a corresponding cylindrical inner circumferential wall on the transmission mechanism housing so that the connection between the outer circumferential wall and the inner circumferential wall forms a second fit, which centers the clamping flange relative to the transmission mechanism housing.

2. The transmission mechanism according to claim 1, characterized in that: The thread device includes the internal thread of the transmission mechanism housing and the external thread of the adjusting nut.

3. The transmission mechanism according to claim 1 or 2, characterized in that: The thread arrangement is designed as a fine thread. 4 . The transmission mechanism according to claim 3 , wherein the fine thread is configured to have a pitch of 1.0, 0.75 or 0.

5.

5. The transmission mechanism according to claim 1, characterized in that: The adjusting nut has an actuation contour which is designed for manually rotating the adjusting nut in the internal thread of the transmission housing by hand or for rotating the adjusting nut in the internal thread of the transmission housing by means of a hand tool.

6. The transmission mechanism according to claim 1, characterized in that: In order to form the setting device, the first bearing device has a first rolling bearing that supports axial force, the first rolling bearing has a first inner ring fixedly connected to the drive shaft and a first outer ring supported in the transmission mechanism housing in an axially adjustable manner, wherein the axial position of the first outer ring of the first rolling bearing can be set by means of a first thread device, the first thread device has a first internal thread fixed in the transmission mechanism housing and a first external thread that cooperates with the first internal thread, the first external thread is constructed on a first adjusting nut, and the first outer ring is supported on the first adjusting nut.

7. The transmission mechanism according to claim 6, characterized in that: The first adjusting nut has a first bearing ring seat in which the first outer ring of the first rolling bearing is axially fixed, and has a first housing wall on which a first outer thread that cooperates with the first inner thread of the transmission housing is formed.

8. The transmission mechanism according to claim 6 or 7, characterized in that: The first thread arrangement is configured as a fine thread.

9. The transmission mechanism according to claim 6, characterized in that: The setting device has a first clamping flange, which is fixed to the first flange seat of the transmission mechanism housing by means of first flange bolts, and in the arrangement in which the first clamping flange is fixed to the first flange seat of the transmission mechanism housing, the first adjusting nut is axially tensioned and / or clamped, thereby preventing the first threaded device from automatically loosening.

10. The transmission mechanism according to claim 9, characterized in that: The first clamping flange has a cylindrical inner circumferential wall, which acts together with a corresponding cylindrical outer circumferential wall on the first adjusting nut, so that the connection between the inner circumferential wall and the outer circumferential wall forms a first fit, and the first fit centers the first adjusting nut relative to the first clamping flange, and the first clamping flange has a cylindrical outer circumferential wall, which acts together with a corresponding cylindrical inner circumferential wall on the transmission mechanism housing, so that the connection between the outer circumferential wall and the inner circumferential wall forms a second fit, and the second fit centers the first clamping flange relative to the transmission mechanism housing.

11. The transmission mechanism according to claim 6, characterized in that: The first adjusting nut has a first actuation contour which is designed for manually rotating the first adjusting nut in the first internal thread of the transmission housing by hand or for rotating the first adjusting nut in the first internal thread of the transmission housing by means of a hand tool.

12. The transmission mechanism according to claim 1, characterized in that: In order to form the setting device, the second bearing device has a second rolling bearing that supports axial force, the second rolling bearing has a second inner ring fixedly connected to the driven shaft and a second outer ring supported in the transmission mechanism housing in an axially adjustable manner, wherein the axial position of the second outer ring of the second rolling bearing can be set by means of a second thread device, the second thread device has a second internal thread fixed in the transmission mechanism housing and a second external thread that cooperates with the second internal thread, the second external thread is constructed on a second adjusting nut, and the second outer ring is supported on the second adjusting nut.

13. The transmission mechanism according to claim 12, characterized in that: The second adjusting nut has a second bearing ring seat, in which the second outer ring of the second rolling bearing is axially fixed, and the second adjusting nut has a second housing wall, on which the second outer thread that interacts with the second inner thread of the transmission housing is formed.

14. The transmission mechanism according to claim 12 or 13, characterized in that: The second thread arrangement is designed as a fine thread.

15. The transmission mechanism according to claim 12, characterized in that: The setting device has a second clamping flange, which is fixed to the second flange seat of the transmission mechanism housing by means of second flange bolts, and in the arrangement in which the second clamping flange is fixed to the second flange seat of the transmission mechanism housing, the second adjusting nut is axially tensioned and / or clamped, thereby preventing the second threaded device from automatically loosening.

16. The transmission mechanism according to claim 15, characterized in that: The second clamping flange has a cylindrical inner circumferential wall, which cooperates with the corresponding cylindrical outer circumferential wall on the second adjusting nut, so that the connection between the inner circumferential wall and the outer circumferential wall forms a first fit, and the first fit centers the second adjusting nut relative to the second clamping flange, and the second clamping flange has a cylindrical outer circumferential wall, which cooperates with the corresponding cylindrical inner circumferential wall on the transmission mechanism housing, so that the connection between the outer circumferential wall and the inner circumferential wall forms a second fit, and the second fit centers the second clamping flange relative to the transmission mechanism housing.

17. The transmission mechanism according to claim 12, characterized in that: The second adjusting nut has a second actuation contour which is designed for manually rotating the second adjusting nut in the second internal thread of the transmission housing by hand or for rotating the second adjusting nut in the second internal thread of the transmission housing by means of a hand tool.

18. The transmission mechanism according to claim 1, characterized in that: The adjusting nut has an end ring wall, the outer ring is supported on the end ring wall with its first end side and the second end side of the outer ring opposite to the first end side faces a shoulder on the transmission mechanism housing, wherein a clamping spring device is inserted into an annular gap constructed between the second end side of the outer ring and the shoulder, and the clamping spring device is constructed to clamp the outer ring axially toward the end ring wall of the adjusting nut.

19. The transmission mechanism according to claim 18, characterized in that: The clamping spring device is formed by at least one wave spring.

20. The transmission mechanism according to claim 18, characterized in that: The clamping spring device is formed by at least one spring spiral or at least one disc spring.

21. The transmission mechanism according to any one of claims 18 to 20, characterized in that: The adjusting nut has a housing wall on which the external thread is formed, which interacts with the internal thread of the gear housing.

22. The transmission mechanism according to claim 21, characterized in that: The thread arrangement is designed as a fine thread.

23. The transmission mechanism according to claim 18, characterized in that: In order to form the setting device, the first bearing device has a first rolling bearing that supports axial forces, the first rolling bearing having a first inner ring fixedly connected to the drive shaft and a first outer ring axially adjustably supported in the transmission mechanism housing, wherein the axial position of the first outer ring of the first rolling bearing can be set by means of a first thread device, the first thread device having a first internal thread fixed in the transmission mechanism housing and a first external thread cooperating with the first internal thread, the first external thread being constructed on a first adjusting nut, the first adjusting nut having a first end ring wall, the first outer ring being supported on the first end ring wall with its first end side and a second end side of the first outer ring opposite to the first end side facing a shoulder on the transmission mechanism housing, wherein a first clamping spring device is inserted into a first annular gap constructed between the second end side of the first outer ring and the shoulder, the first clamping spring device being constructed for clamping the first outer ring axially toward the end ring wall of the first adjusting nut.

24. The transmission mechanism according to claim 23, characterized in that: The first clamping spring device is formed by at least one wave spring.

25. The transmission mechanism according to claim 23, characterized in that: The first clamping spring device is formed by at least one spring coil.

26. The transmission mechanism according to any one of claims 23 to 25, characterized in that: The first adjusting nut has a housing wall, on which the first external thread is formed, which interacts with the first internal thread of the gear housing.

27. The transmission mechanism according to claim 26, characterized in that: The first thread arrangement is configured as a fine thread.

28. The transmission mechanism according to claim 18, characterized in that:

20. The camshaft arrangement of claim 19, wherein the second bearing assembly comprises a first end portion which is adapted to engage the second end portion of the second outer ring of the second rolling bearing and a second end portion which is adapted to engage the second end portion of the second outer ring of the second rolling bearing.

29. The transmission mechanism according to claim 28, characterized in that: The second clamping spring device is formed by at least one wave spring.

30. The transmission mechanism according to claim 28, characterized in that: The second clamping spring device is formed by at least one spring coil.

31. The transmission mechanism according to any one of claims 28 to 30, characterized in that: The second adjusting nut has a housing wall, on which the second external thread is formed, which interacts with the second internal thread of the gear housing.

32. The transmission mechanism according to claim 31, characterized in that: The second thread device is a fine thread.

33. The transmission mechanism according to claim 1, characterized in that: The rolling bearing is configured as a double-row angular contact ball bearing.

34. The transmission mechanism according to claim 1, characterized in that: The rolling bearing is designed as a fixed bearing of a fixed / loose bearing arrangement of the first bearing arrangement and / or of the second bearing arrangement.

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