A gear assembly axle positioning fixture and gearbox assembly production line

Abstract

This invention provides a gear assembly axle positioning fixture and a gearbox assembly production line, belonging to the field of gearbox technology. It includes a support frame, a support plate mounted on the support frame, a lifting mechanism, and an auxiliary positioning mechanism mounted on the lifting mechanism. The auxiliary positioning mechanism is mounted above the support plate. The gear is mounted on the support plate, and the auxiliary positioning mechanism includes a clamping arm. The support plate has a connecting hole. The support frame includes a long mounting base and a long side plate. The long mounting base has a hollow structure, within which a three-jaw chuck and a lifter are located. The three-jaw chuck is used to connect to the lower end of the axle. The lifter is connected to the support plate and has a displacement sensor. The support plate also has a rotating clamping mechanism located on the outer side of the gear. The gear assembly axle positioning fixture provided by this invention improves the assembly accuracy of the axle and gear, reduces the axle's range of motion, and lowers safety hazards.

Description

Technical Field

[0001] This invention belongs to the field of gearbox technology, and more specifically, it relates to an axle positioning fixture for gear assembly and a gearbox assembly production line. Background Technology

[0002] Gearbox assembly is a crucial step in the assembly of railway vehicle bogies. Due to its varied structural forms and high precision requirements, manual assembly is currently the industry standard. During assembly, the gears are first heated to a preset temperature, then removed and placed on an assembly fixture. A crane is then used to lift the axle and vertically insert it into the heated hub hole of the large gear to complete the axle-gear assembly. This installation method requires extensive control of the axle's movement using lifting equipment, posing safety hazards. Furthermore, the accuracy of using lifting equipment to control axle movement is poor, resulting in insufficient precision in the axle-gear assembly. Summary of the Invention

[0003] The purpose of this invention is to provide an axle positioning fixture for gear assembly and a gearbox assembly production line to solve the technical problems of low axle and gear assembly accuracy and safety hazards in the assembly process in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A gear assembly axle positioning fixture is provided, comprising a support frame, a support plate mounted on the support frame, a lifting mechanism, and an auxiliary positioning mechanism mounted on the lifting mechanism. The auxiliary positioning mechanism is mounted above the support plate. The gear is mounted on the support plate, and the auxiliary positioning mechanism includes a clamping arm for clamping and fixing the end of the axle. The support plate has a communicating hole coaxially arranged with the gear. The support frame includes a long mounting base and a long side plate fixed on the long mounting base. The long mounting base is a hollow structure, and a three-jaw chuck and a lifter are provided inside the hollow structure. The three-jaw chuck is used to connect to the lower end of the axle. The lifter is connected to the support plate, and a displacement sensor is provided on the lifter. The support plate also has a rotating clamping mechanism located on the outer side of the gear for clamping the gear onto the support plate.

[0005] In one possible implementation, the lifting device includes a support plate, a lead screw, a nut, and a driver. The support plate is horizontally positioned and has mounting holes. The nut is fixedly installed to the support plate and located within the mounting holes. The lead screw is vertically positioned, with its upper and lower ends rotatably connected to the support plate and the bottom of the hollow structure, respectively, and is fitted onto the nut. The driver is driven by the lead screw and is used to drive the lead screw to rotate. The three-jaw chuck and the displacement sensor are both mounted on the support plate.

[0006] In one possible implementation, there are multiple lead screws and nuts, which are installed in a coordinated manner; the hollow structure is also provided with multiple guide rods, and the bearing plate is provided with multiple guide holes that are slidably connected to the guide rods.

[0007] In one possible implementation, the rotary clamping mechanism includes several mounting blocks and a pressure plate mounted on the mounting blocks. The pressure plate is a long strip structure, with one end rotatably connected to the mounting blocks and the other end used to press against the upper surface of the gear.

[0008] In one possible implementation, the upper end of the elongated side plate has a frame structure, and there are two clamping arms arranged in parallel and spaced apart. The frame structure is provided with a driver for driving the two clamping arms to move relative to or away from each other. Both clamping arms are slidably connected to the frame structure. The driver includes two rotating shafts, synchronous pulleys mounted on the two rotating shafts, an upper synchronous belt connected to the synchronous pulleys, a sliding plate fixedly connected to the synchronous belt, and a driver that is drively connected to the rotating shafts. The two rotating shafts are arranged horizontally and are located on the upper and lower sides of the frame structure, respectively. The synchronous belt is provided with a toothed plate, and the sliding plate is fixedly connected to the toothed plate. The two clamping arms are slidably mounted on the sliding plate.

[0009] In one possible implementation, the three-jaw chuck includes three fixed blocks arranged in a ring and three clamping blocks respectively mounted on each of the fixed blocks; the plurality of clamping blocks form a limiting cavity for accommodating the axle.

[0010] In one possible implementation, the clamping arm is provided with a pad for connection with the axle, and the pad is provided with a V-shaped clamping surface.

[0011] In one possible implementation, the support plate is a long strip structure and is mounted on the long strip mounting base, the lifting mechanism is mounted on the long strip side plate, and there are multiple lifting mechanisms and auxiliary positioning mechanisms, which are arranged in a one-to-one correspondence.

[0012] The beneficial effects of the gear assembly axle positioning fixture provided by this invention are as follows: Compared with the prior art, the gear assembly axle positioning fixture of this invention, during operation, first places the heated gear on the support plate of the support frame, with the hub hole of the gear and the connecting hole aligned vertically, and uses a rotary clamping mechanism to clamp and limit the gear; then, a robotic arm is used to pick up the axle gear assembly and control the axle to be vertically positioned, with the lower end of the axle passing through the hub hole and the connecting hole and clamped on the three-jaw chuck of the lifting device, while the upper end of the axle is clamped on the clamping arm of the lifting mechanism; then, the lifting device or lifting mechanism is activated, thereby controlling the axle to... The axle moves vertically to adjust the assembly position of the axle and gear. A displacement sensor monitors the axle's movement distance and sends a signal to the controller of the lifting device and the lifting mechanism. After analyzing and processing the signal, the controller controls the lifting device and the lifting mechanism to drive the axle to produce accurate displacement. In this way, the axle's position is adjusted by the lifting device, the lifting mechanism, the three-jaw chuck, and the auxiliary positioning mechanism, causing relative movement between the axle and the gear. Under the action of the displacement sensor, the axle's movement position is accurate, thereby improving the assembly accuracy of the axle and gear, reducing the axle's movement range, and reducing safety hazards.

[0013] Another object of the present invention is to provide a gearbox assembly production line, including any of the above-mentioned gear assembly axle positioning fixtures.

[0014] The gearbox assembly production line provided by this invention uses axle positioning fixtures for gear assembly. By adjusting the position of the axle with the help of a lifter, lifting mechanism, three-jaw chuck and auxiliary positioning mechanism, the relative movement between the axle and the gear occurs. Under the action of displacement sensor, the axle movement position is accurate, thereby improving the assembly accuracy of the axle and the gear, reducing the movement range of the axle and reducing safety hazards. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the gear assembly axle positioning fixture provided in an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram showing the connection between the support frame and the lifting device provided in an embodiment of the present invention;

[0018] Figure 3 A schematic diagram of the connection between the elongated side plate and the lifting mechanism provided in an embodiment of the present invention. Figure 1 ;

[0019] Figure 4 A schematic diagram of the connection between the elongated side plate and the lifting mechanism provided in an embodiment of the present invention. Figure 2 .

[0020] The following are the labeling elements in the figure:

[0021] 1. Support frame; 11. Support plate; 12. Long strip mounting base; 13. Long strip side plate; 14. Hollow cavity; 15. Frame structure; 2. Lifter; 21. Bearing plate; 22. Lead screw; 23. Nut; 24. Driver; 3. Three-jaw chuck; 31. Fixing block; 32. Clamping block; 4. Rotary clamping mechanism; 41. Mounting block; 42. Pressure plate; 5. Lifting mechanism; 51. Rotating shaft; 52. Synchronous pulley; 53. Synchronous belt; 54. Sliding plate; 55. Gear plate; 6. Auxiliary positioning mechanism; 61. Clamping arm; 62. Pad block; 7. Displacement sensor; 8. Axle; 9. Gear. Detailed Implementation

[0022] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0023] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0024] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] Please see Figures 1 to 4 The axle positioning fixture for gear assembly provided by the present invention will now be described. A gear assembly axle positioning fixture includes a support frame 1, a support plate 11 mounted on the support frame 1, a lifting mechanism 5, and an auxiliary positioning mechanism 6 mounted on the lifting mechanism 5. The auxiliary positioning mechanism 6 is mounted above the support plate 11. A gear 9 is mounted on the support plate 11. The auxiliary positioning mechanism 6 includes a clamping arm 61 for clamping and fixing the end of the axle 8. The support plate 11 has a communicating hole coaxially arranged with the gear 9. The support frame 1 includes a long mounting base 12 and a long side plate 13 fixed on the long mounting base 12. The long mounting base 12 has a hollow structure, and a three-jaw chuck 3 and a lifter 2 are provided inside the hollow structure. The three-jaw chuck 3 is used to connect to the lower end of the axle 8. The lifter 2 is connected to the support plate 11 and has a displacement sensor 7. The support plate 11 also has a rotating pressing mechanism 4, located on the outer side of the gear 9, for pressing the gear 9 onto the support plate 11.

[0027] The gear assembly axle positioning fixture provided by this invention, compared with the prior art, in operation, first places the heated gear 9 on the support plate 11 of the support frame 1, with the hub hole of the gear 9 and the connecting hole vertically aligned, and uses the rotary clamping mechanism 4 to clamp and limit the gear 9; then, a robotic arm picks up the axle 8 and gear 9 assembly and controls the axle 8 to be vertically positioned, with the lower end of the axle 8 passing through the hub hole and the connecting hole and clamped on the three-jaw chuck 3 of the lifter 2, while the upper end of the axle 8 is clamped on the clamping arm 61 of the lifting mechanism 5; then, the lifter 2 or the lifting mechanism 5 is activated to control the axle 8 to move in the vertical direction, thereby adjusting... The assembly position of axle 8 and gear 9 is determined by the displacement sensor 7, which monitors the movement distance of axle 8 and sends a signal to the controller of the lifting device 2 and the lifting mechanism 5. After analyzing and processing the signal, the controller controls the lifting device 2 and the lifting mechanism 5 to drive axle 8 to produce accurate displacement. In this way, the position of axle 8 is adjusted by the lifting device 2, the lifting mechanism 5, the three-jaw chuck 3, and the auxiliary positioning mechanism 6, so that axle 8 and gear 9 move relative to each other. Under the action of displacement sensor 7, the movement position of axle 8 is accurate, thereby improving the assembly accuracy of axle 8 and gear 9, reducing the movement range of axle 8, and reducing safety hazards.

[0028] The robotic arm grasps the axle 8 and places it on the support frame 1, and then positions it between the support plate 11 and the auxiliary positioning mechanism 6. The ends of the axle 8 are connected to the auxiliary positioning mechanism 6 and the three-jaw chuck 3, respectively.

[0029] The elongated mounting base 12 has a hollow interior, with a connecting hole that communicates with the hollow structure. The lifter 2 and the three-jaw chuck 3 are located inside the hollow structure. The elongated mounting base 12 is designed as a box structure, with a connecting hole on the upper surface of the box structure that communicates with the interior of the box structure. The top of the box structure is a support plate 11, and the gear 9 is mounted on the upper end of the box structure. The lifter 2 and the three-jaw chuck 3 ensure accurate, convenient, and reliable installation between the axle 8 and the gear 9.

[0030] Please see Figure 1 and Figure 4 As a specific embodiment of the gear assembly axle positioning fixture provided by the present invention, the lifting device 2 includes a support plate 21, a lead screw 22, a nut 23, and a driver 24. The support plate 21 is horizontally arranged and has mounting holes. The nut 23 is fixedly installed on the support plate 21 and located in the mounting holes. The lead screw 22 is vertically arranged, and its upper and lower ends are rotatably connected to the support plate 11 and the bottom of the hollow structure, respectively, and are fitted onto the nut 23. The driver 24 is driven by the lead screw 22 and is used to drive the lead screw 22 to rotate. The three-jaw chuck 3 and the displacement sensor 7 are both installed on the support plate 21. The support plate 21 is horizontally installed in the hollow cavity 14, and mounting holes are opened on the support plate 21. The nut 23 is installed in the mounting holes, and the lead screw 22 is vertically arranged and screwed to the nut 23. The driver 24 is a motor and gear 9 transmission assembly, thereby enabling the lead screw 22 to rotate smoothly. The three-jaw chuck 3 is mounted on the support plate 21, and the lower end of the axle 8 passes through the hub hole of the gear 9 and connects to the three-jaw chuck 3. In use, starting the motor controls the lead screw 22 to rotate, thereby pushing the support plate 21 and the nut 23 to move up and down together under the constraint of the nut 23.

[0031] Please see Figure 1 and Figure 4 In one specific embodiment of the gear assembly axle positioning fixture provided by the present invention, there are multiple lead screws 22 and nuts 23, which are installed in a one-to-one manner. Multiple guide rods are also provided inside the hollow cavity 14, and multiple guide holes that slide and engage with the guide rods are provided on the support plate 21. Multiple mounting holes are provided, symmetrically arranged on the support plate 21. Nuts 23 are fixedly installed in each mounting hole, and multiple lead screws 22 correspond one-to-one with multiple nuts 23, thereby making the vertical movement of the support plate 21 and the three-jaw chuck 3 more stable and reliable. Simultaneously, multiple guide rods are provided inside the hollow structure, and multiple guide holes that slide and engage with the guide rods are provided on the support plate 21, thereby making the vertical movement of the support plate 21 more accurate.

[0032] Please see Figure 1As a specific embodiment of the gear assembly axle positioning fixture provided by the present invention, the rotary clamping mechanism 4 includes several mounting blocks 41 and a pressure plate 42 mounted on the mounting blocks 41. The pressure plate 42 has a long strip structure, one end of which is rotatably connected to the mounting block 41, and the other end is used to press against the upper end face of the gear 9. The mounting blocks 41 are fixedly mounted on the support plate 11 and located on one side of the gear 9. A rotating hole is provided on the mounting block 41, and one end of the pressure plate 42 is provided with a connecting shaft rotatably connected to the rotating hole. After the gear 9 is mounted on the support plate 11, the operator operates the pressure plate 42 to rotate, so that the other end of the pressure plate 42 presses against the gear 9, thereby achieving the clamping and limiting of the gear 9. The long strip structure of the pressure plate 42 allows its other end to act more forcefully on the gear 9. An elastic element is provided in the rotating hole, which allows the pressure plate 42 to press firmly downward against the gear 9, resulting in higher reliability.

[0033] Please see Figures 1 to 3As a specific embodiment of the gear assembly axle positioning fixture provided by the present invention, the upper end of the long side plate 13 has a frame structure 15, with two clamping arms 61 arranged in parallel and spaced apart. The frame structure 15 is provided with a driver 24 for driving the two clamping arms 61 to move relative to or away from each other. Both clamping arms 61 are slidably connected to the frame structure 15. The driver 24 includes two rotating shafts 51, synchronous pulleys 52 mounted on the two rotating shafts 51, an upper synchronous belt 53 connected to the synchronous pulleys 52, a sliding plate 54 fixedly connected to the synchronous belt 53, and a driver 24 that is drively connected to the rotating shafts 51. The two rotating shafts 51 are arranged horizontally and are located on the upper and lower sides of the frame structure 15, respectively. A toothed plate 55 is provided on the slide plate 53, and a sliding plate 54 is fixedly connected to the toothed plate 55. Two clamping arms 61 are slidably mounted on the sliding plate 54. A frame structure 15 is provided on the long side plate 13, and two rotating shafts 51 are rotatably connected to the upper and lower sides of the frame structure 15, respectively. Synchronous pulleys 52 are installed on both rotating shafts 51, and the corresponding two synchronous pulleys 52 on the two rotating shafts 51 are connected by a synchronous belt 53. The sliding plate 54 is fixedly connected to the synchronous belt 53. The starter 24 controls the rotating shafts 51 to rotate, thereby driving the synchronous belt 53 to move, which in turn drives the sliding plate 54, the two clamping arms 61 mounted on the sliding plate 54, and the axle 8 to move up and down. The two synchronous pulleys 52 are set on each rotating shaft 51, that is, the two clamping arms 61 and the sliding plate 54 are fixedly connected to the two synchronous belts 53, so that the movement of the sliding plate 54 and the clamping arms 61 is more stable and accurate. A toothed plate 55 is installed on the synchronous belt 53, which helps to more securely mount the sliding plate 54 onto the synchronous belt 53. The driver 24 includes a screw and two movable blocks threaded onto the screw, with the threaded holes on the two movable blocks rotating in opposite directions. Two clamping arms 61 are fixedly mounted on the two movable blocks respectively. The motor is connected to the screw drive, which can operate the two movable blocks to move closer or further apart, thereby realizing the clamping and releasing actions of the two clamping arms 61.

[0034] Please see Figure 1 and Figure 4As a specific embodiment of the gear assembly axle positioning fixture provided by the present invention, the three-jaw chuck 3 includes three fixed blocks 31 arranged in a ring and three clamping blocks 32 respectively installed on each fixed block 31; the multiple clamping blocks 32 form a limiting cavity for accommodating the axle 8; the multiple fixed blocks 31 are arranged in a ring, and each fixed block 31 is provided with an installation groove, and each installation groove is provided with a clamping block 32, and the multiple clamping blocks 32 are arranged around the lower end of the axle 8 to form a limiting cavity for installing the axle 8; the clamping blocks 32 are slidably connected in the installation groove, and the clamping blocks 32 are provided with elongated holes, and the bottom surface of the installation groove is provided with screw holes. The clamping blocks 32 are connected to the installation groove by bolts, so that the radial dimension of the limiting cavity can be easily adjusted.

[0035] Please see Figure 1 and Figure 2 As a specific embodiment of the gear assembly axle positioning fixture provided by the present invention, the clamping arm 61 is provided with a pad 62 for connecting with the axle 8. The pad 62 is provided with a V-shaped clamping surface. The upper end of the axle 8 is located between the two clamping arms 61. When the two clamping arms 61 clamp the upper end of the axle 8, the two pads 62 directly contact the axle 8. Under the action of the two V-shaped clamping surfaces, the clamping stability of the axle 8 is higher.

[0036] Please see Figure 1 As a specific embodiment of the gear assembly axle positioning fixture provided by the present invention, the support plate 11 is a long strip structure and is installed on the long strip mounting base 12. The lifting mechanism 5 is installed on the long strip side plate 13. There are multiple lifting mechanisms 5 and auxiliary positioning mechanisms 6, and they are arranged one-to-one. The support plate 11 is a long strip structure and is installed on the long strip mounting base 12 and is arranged along the length direction of the long strip mounting base 12. Multiple lifting devices 2 are arranged along the length direction of the support plate 11, and multiple lifting mechanisms 5 are installed on the long strip side plate 13 and correspond one-to-one with multiple lifting devices 2, thereby realizing the simultaneous assembly of multiple axles 8 and multiple gears 9, improving the installation efficiency of gears 9 and axles 8.

[0037] Not shown in the figure, this embodiment of the invention also provides a gearbox assembly production line, which includes any of the above-mentioned gear assembly axle positioning fixtures.

[0038] The gearbox assembly production line provided by the present invention adopts the above-mentioned gear assembly axle positioning fixture. Therefore, by means of the lifting device 2, lifting mechanism 5, three-jaw chuck 3 and auxiliary positioning mechanism 6, the position of the axle 8 is adjusted, so that the relative movement between the axle 8 and the gear 9 occurs. Under the action of the displacement sensor 7, the movement position of the axle 8 is accurate, thereby improving the assembly accuracy of the axle 8 and the gear 9, reducing the movement range of the axle 8, and reducing safety hazards.

[0039] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gear assembly axle positioning fixture, characterized in that, The system includes a support frame, a support plate mounted on the support frame, a lifting mechanism, and an auxiliary positioning mechanism mounted on the lifting mechanism, with the auxiliary positioning mechanism positioned above the support plate. A gear is mounted on the support plate, and the auxiliary positioning mechanism includes a clamping arm for clamping and fixing the end of the axle. The support plate has a communicating hole coaxially arranged with the gear. The support frame includes a long mounting base and a long side plate fixed on the long mounting base. The long mounting base is a hollow structure, and a three-jaw chuck and a lifter are provided inside the hollow structure. The three-jaw chuck is used to connect to the lower end of the axle. The lifter is connected to the support plate and has a displacement sensor. The support plate also has a rotary pressing mechanism located on the outer side of the gear for pressing the gear onto the support plate. The rotary pressing mechanism includes several mounting blocks and a pressure plate mounted on the mounting blocks. The pressure plate is a long strip structure, with one end rotatably connected to the mounting block and the other end used to press against the upper end face of the gear. The lifting device includes a support plate, a lead screw, a nut, and a driver. The support plate is horizontally positioned and has mounting holes. The nut is fixedly installed on the support plate and located within the mounting holes. The lead screw is vertically positioned, with its upper and lower ends rotatably connected to the support plate and the bottom of the hollow structure, respectively, and is fitted onto the nut. The driver is driven by the lead screw and is used to drive the lead screw to rotate. The three-jaw chuck and the displacement sensor are both mounted on the support plate. The upper end of the elongated side plate has a frame structure. There are two clamping arms, which are arranged in parallel and spaced apart. The frame structure is provided with a driver for driving the two clamping arms to move relative to or away from each other. Both clamping arms are slidably connected to the frame structure. The driver includes two rotating shafts, synchronous pulleys mounted on the two rotating shafts, an upper synchronous belt connected to the synchronous pulleys, a sliding plate fixedly connected to the synchronous belt, and a driver that is drively connected to the rotating shafts. The two rotating shafts are arranged horizontally and are located on the upper and lower sides of the frame structure, respectively. The synchronous belt is provided with a toothed plate, and the sliding plate is fixedly connected to the toothed plate. The two clamping arms are slidably mounted on the sliding plate.

2. The gear assembly axle positioning fixture as described in claim 1, characterized in that, There are multiple lead screws and nuts, and they are installed in a coordinated manner. The hollow structure is also provided with multiple guide rods, and the bearing plate is provided with multiple guide holes that are slidably connected to the guide rods.

3. The gear assembly axle positioning fixture as described in claim 1, characterized in that, The three-jaw chuck includes three fixed blocks arranged in a ring and three clamping blocks respectively mounted on each of the fixed blocks; the plurality of clamping blocks form a limiting cavity for accommodating the axle.

4. The gear assembly axle positioning fixture as described in claim 3, characterized in that, The clamping arm is provided with a pad for connecting with the axle, and the pad is provided with a V-shaped clamping surface.

5. The axle positioning fixture for gear assembly as described in claim 1, characterized in that, The support plate is a long strip structure and is installed on the long strip mounting base. The lifting mechanism is installed on the long strip side plate. There are multiple lifting mechanisms and auxiliary positioning mechanisms, and they are arranged in a one-to-one correspondence.

6. A gearbox assembly production line, characterized in that, Including the gear assembly axle positioning fixture as described in any one of claims 1-5.

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