An aircraft backlash elimination gear grinding device

Abstract

The present invention discloses a grinding device for aircraft backlash gears, which is used for grinding a backlash gear set and includes: a base, at least one grinding assembly and a driving assembly. The grinding assembly includes a housing, a clamping portion and a grinding portion. The housing is arranged on the base. The clamping portion is rotatably connected to the housing and is used for detachably connecting the backlash gear set. The grinding portion is rotatably connected to the housing and meshes with the backlash gear set. The driving assembly has a fixed end and a rotating end. The fixed end of the driving assembly is connected to the base, and the rotating end is connected to the grinding portion, and is used for driving the grinding portion to rotate around its own axis and driving the backlash gear set to rotate around the rotation axis of the clamping portion through the grinding portion, so as to grind the backlash gear set. The present invention can solve the problems of long cycle, low efficiency and poor grinding effect in the prior art due to manual grinding.

Description

Technical Field

[0001] The present invention relates to, but is not limited to, the technical field of aircraft control systems, and particularly relates to a grinding device for aircraft backlash gears. Background Art

[0002] Generally, a backlash gear is adopted in the transmission system of an aircraft control system to improve the control performance of the aircraft.

[0003] For example, in the Chinese utility model patent with the application number: CN202020137862.X and the name: A backlash elimination structure for aircraft steering wheel gear transmission, it includes a transmission gear and a backlash gear set; the transmission gear is sleeved on the transmission device of the aircraft steering wheel, and the transmission gear is meshed with the backlash gear set; the backlash gear set includes a driven gear, a backlash gear and a locking screw; after long-term use, the backlash gear set will wear, which easily leads to an increasing meshing clearance between the sector gear set and the circular gear. The usual maintenance method is manual grinding and repair, which is not only laborious and inaccurate, but also has a long grinding cycle, low efficiency, poor grinding effect. At the same time, the grinding effect cannot be inspected after grinding, and it needs to be installed and verified on the machine.

[0004] Therefore, there is an urgent need for a grinding device for aircraft backlash gears to solve the problems of long cycle, low efficiency and poor grinding effect caused by manual grinding in the prior art. Summary of the Invention

[0005] In view of this, it is necessary to provide a grinding device for aircraft backlash gears to solve the technical problems of long cycle, low efficiency and poor grinding effect caused by manual grinding in the prior art.

[0006] To achieve the above technical purpose, the technical solution of the present invention provides a grinding device for aircraft backlash gears, which is used for grinding a backlash gear set and includes:

[0007] A base;

[0008] At least one grinding assembly, the grinding assembly includes a housing, a clamping part and a grinding part. The housing is arranged on the base, the clamping part is rotatably connected to the housing, the clamping part is used for detachably connecting the backlash gear set, and the grinding part is rotatably connected to the housing and meshes with the backlash gear set;

[0009] A driving assembly, the driving assembly has a fixed end and a rotating end. The fixed end of the driving assembly is connected to the base, and the rotating end is connected to the grinding part, and is used for driving the grinding part to rotate around its own axis, and driving the backlash gear set to rotate around the rotation axis of the clamping part through the grinding part, so as to grind the backlash gear set.

[0010] Further, a groove is formed in the top of the housing. The housing is further provided with a first through hole which penetrates the inner walls of two opposite sides of the groove. The clamping portion is detachably connected to the housing and can rotate around the axis of the first through hole. The backlash-eliminating gear set is slidably inserted into the groove, sleeved on the clamping portion, and can rotate around the axis of the clamping portion along with the clamping portion.

[0011] Further, the housing is further provided with a second through hole which is arranged above the first through hole and penetrates the inner walls of two opposite sides of the groove. The grinding portion is slidably inserted into the groove and can rotate around the axis of the second through hole, and the grinding portion meshes with the backlash-eliminating gear set.

[0012] Further, the driving assembly includes a bracket, a first rotating shaft and a first driving disk. The bracket is arranged at an interval from the housing. The first rotating shaft is rotatably connected to the bracket, and the axis of rotation of the first rotating shaft is coaxial with that of the grinding portion and is connected to the grinding portion. The first driving disk is fixedly sleeved on the first rotating shaft and is used for driving the first rotating shaft and the grinding portion to rotate around the axis of the second through hole.

[0013] Further, the number of the grinding assemblies is two. The two housings are arranged at an interval. The aircraft backlash-eliminating gear grinding device further includes a transmission assembly which is connected to both of the two grinding portions.

[0014] Further, the transmission assembly includes two first rocker shafts, two first pull rods, two first rockers and two second pull rods. The first rocker shafts are arranged corresponding to the housings one by one. One end of each first rocker shaft is coaxial with the axis of rotation of the clamping portion. One end of each first pull rod is hinged to the other end of the corresponding first rocker shaft. Each first rocker is rotatably connected to the housing, and one end of each first rocker is hinged to the other end of the corresponding first pull rod. One end of each second pull rod is hinged to the other end of the corresponding first rocker, and the other ends of the two second pull rods are hinged to each other for driving the two adjacent clamping portions to rotate around their respective axes of rotation.

[0015] Further, the driving assembly further includes a second rotating shaft and a second driving disk. The second rotating shaft is rotatably arranged on the bracket, and the axis of rotation of the second rotating shaft is coaxial with that of the other grinding portion and is connected to the grinding portion. The second driving disk is fixedly sleeved on the second rotating shaft and is used for driving the second rotating shaft and the other grinding portion to rotate around their axis of rotation.

[0016] Further, the aircraft backlash elimination gear grinding device further includes a damping assembly. The damping assembly includes a damper which has a fixed end and a movable end. The fixed end of the damper is connected to the base, and the movable end is detachably hinged to the other end of the second pull rod for inspecting the grinding effect of the backlash elimination gear set.

[0017] Further, the damping assembly further includes a first connecting rod, a second connecting rod and a second rocker arm. One end of the first connecting rod is hinged to the other ends of the two second connecting rods, and the other end is hinged to the base. One end of the second connecting rod is detachably hinged to the middle of the first connecting rod. The second rocker arm is rotatably connected to the base, and one end of the second rocker arm is hinged to the other end of the second connecting rod, and the other end is hinged to the movable end of the damper.

[0018] Further, it further includes two first supports and a first fixing rod. The two first supports are arranged at intervals and are both fixedly connected to the base. The two ends of the first fixing rod are respectively fixedly connected to the two first supports. The two ends of the two shells facing away from the groove are respectively provided with first through holes. The two shells are arranged at intervals along the length direction of the first fixing rod and are respectively sleeved on the first fixing rod through the two first through holes.

[0019] Compared with the prior art, the beneficial effects of the present invention include: at least one grinding assembly is arranged on the base. The grinding assembly includes a shell, a clamping part and a grinding part. The clamping part is rotatably connected to the shell for detachably connecting the backlash elimination gear set to the shell. At the same time, the grinding part is rotatably connected to the shell and meshes with the clamped backlash elimination gear set. Driven by the rotating end of the driving assembly, the grinding part rotates around its rotation axis and drives the backlash elimination gear set to rotate around the rotation axis of the clamping part to realize the grinding of the backlash elimination gear set. Compared with the prior art, the user drives the grinding part to rotate by setting the driving assembly, and the rotated grinding part realizes the grinding of the backlash elimination gear set through the meshing with the backlash elimination gear set, which can solve the technical problems of long period, low efficiency and poor grinding effect in the prior art due to manual grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional structural schematic diagram of an aircraft backlash elimination gear grinding device provided by an embodiment of the present invention;

[0021] Figure 2 is a front view structural schematic diagram of an aircraft backlash elimination gear grinding device provided by an embodiment of the present invention;

[0022] Figure 3 is a top view structural schematic diagram of an aircraft backlash elimination gear grinding device provided by an embodiment of the present invention;

[0023] Figure 4 It is a left - view structural schematic diagram of a grinding device for aircraft backlash gears provided by an embodiment of the present invention;

[0024] Figure 5 It is a three - dimensional structural schematic diagram of the connection between a housing, a first rocker arm shaft, a grinding part, a clamping part and a universal joint provided by an embodiment of the present invention. Specific embodiments

[0025] The following will specifically describe the preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings form a part of this application and are used together with the embodiments of the present invention to explain the principles of the present invention, rather than to limit the scope of the present invention.

[0026] Please refer to Figures 1 to 4 , the present invention provides a grinding device for aircraft backlash gears, which is used for grinding a backlash gear set 100, and includes: a base 200, at least one grinding assembly 300 and a driving assembly 400. The grinding assembly 300 includes a housing 310, a clamping part 320 and a grinding part 330. The housing 310 is arranged on the base 200. The clamping part 320 is rotatably connected to the housing 310 and is used for detachably connecting the backlash gear set 100. The grinding part 330 is rotatably connected to the housing 310 and meshes with the backlash gear set 100. The driving assembly 400 has a fixed end and a rotating end. The fixed end of the driving assembly 400 is connected to the base 200, and the rotating end is connected to the grinding part 330, and is used to drive the grinding part 330 to rotate around its own axis and drive the backlash gear set 100 to rotate around the rotation axis of the clamping part 320 to grind the backlash gear set 100.

[0027] In this device, at least one grinding assembly 300 is arranged on the base 200. The grinding assembly 300 includes a housing 310, a clamping part 320 and a grinding part 330. Among them, the clamping part 320 is rotatably connected to the housing 310 and is used for detachably connecting the backlash gear set 100 to the housing 310. At the same time, the grinding part 330 is rotatably connected to the housing 310 and meshes with the clamped backlash gear set 100. Driven by the rotating end of the driving assembly 400, the grinding part 330 rotates around its rotation axis and drives the backlash gear set 100 to rotate around the rotation axis of the clamping part 320 to realize the grinding of the backlash gear set 100.

[0028] Compared with the prior art, the user drives the grinding part 330 to rotate by setting the driving assembly 400, and the rotated grinding part 330 realizes the grinding of the backlash gear set 100 through meshing with the backlash gear set 100, which can solve the technical problems of long cycle, low efficiency and poor grinding effect in the prior art due to manual grinding.

[0029] Further, the backlash elimination gear set 100 in the present device is composed of two sector gears 110 in the shape of a sector through fixing bolts 120. After long-term use, the sector gear set and the circular gear 331 are in long-term meshing and wear, resulting in an increasing meshing clearance between the sector gear set and the circular gear 331. Usually, the two sector gears 110 can be adjusted to stagger a certain angle and ground to carry out the repair.

[0030] Specifically, in the present application, first, the three fixing bolts 120 of the sector gear set are removed, and one sector gear 110 is rotated relative to the other sector gear 110 around its axis, so that the tooth profiles of the two gears are staggered a little, ensuring that the original bolt holes can be enlarged by 0.1 mm. If the gears are worn more, the tooth profiles of the two gears can be staggered more, ensuring that the original bolt holes can be enlarged by 0.2 mm. Then, the sector gear 110 is fixed on the vise and clamped, and the bolt mounting holes are reamed and bored to enlarge the holes by 0.1 mm or 0.2 mm. Install enlarged bolts matching the holes, and the bolts can be enlarged to ф8.1 or ф8.2, and the maximum can be enlarged to ф8.5. Finally, install gaskets and tighten the self-locking nuts. After adjustment, the sector gear set can be placed on the present device for grinding.

[0031] As Figure 1 and Figure 5 shown, a groove is formed at the top of the housing 310, and the housing 310 is also provided with a first through hole, which penetrates the inner walls of the two opposite sides of the groove. The clamping part 320 is detachably connected to the housing 310 and can rotate around the axis of the first through hole. The backlash elimination gear set 100 is slidably inserted into the groove, sleeved on the clamping part 320, and the backlash elimination gear set 100 can rotate around the axis of the clamping part 320 along with the clamping part 320.

[0032] Specifically, in the present device, the clamping part 320 is detachably connected to the first through hole, and the backlash elimination gear set 100 is detachably connected to the clamping part 320 by being inserted into the groove, which can facilitate the installation of the backlash elimination gear set 100.

[0033] As one implementation manner, as Figure 5 shown, the housing 310 is also provided with a second through hole, which is arranged above the first through hole and penetrates the inner walls of the two opposite sides of the groove. The grinding part 330 is slidably inserted into the groove and can rotate around the axis of the second through hole, and the grinding part 330 meshes with the backlash elimination gear set 100.

[0034] The grinding part 330 rotates along the axis of the second through hole, and the second through hole is arranged above the first through hole, which can facilitate the user to disassemble and install the backlash elimination gear set 100.

[0035] As another implementation manner, as Figures 1 to 4As shown, the driving assembly 400 includes a bracket 410, a first rotating shaft 420, and a first driving disc 430. The bracket 410 is spaced apart from the housing 310. The first rotating shaft 420 is rotatably connected to the bracket 410, and the first rotating shaft 420 is coaxial with the rotation axis of the grinding portion 330 and is connected to the grinding portion 330. The first driving disc 430 is fixedly sleeved on the first rotating shaft 420 and is used to drive the first rotating shaft 420 and the grinding portion 330 to rotate around the axis of the second through hole.

[0036] In order to facilitate the user to operate and drive the grinding portion 330 to rotate around its rotation axis, by providing the driving structure of the bracket 410, the first rotating shaft 420, and the first driving disc 430, it is convenient for the user to use.

[0037] Furthermore, the first rotating shaft 420 can also be connected to the output shaft of the motor and the speed reducer here, and the grinding portion 330 is driven to rotate by the forward and reverse rotation of the motor.

[0038] As Figure 1 shown, the number of the grinding assemblies 300 is two, and the two housings 310 are spaced apart. The aircraft backlash elimination gear grinding device further includes a transmission assembly 500, and the transmission assembly 500 is connected to both grinding portions 330.

[0039] In this device, the two grinding portions 330 are connected by the transmission assembly 500, so that the user can drive one grinding portion 330 to drive the two grinding portions 330 to grind the two backlash elimination gear sets 100 simultaneously, which can improve the production efficiency.

[0040] As one implementation, as Figure 2 、 Figure 4 shown, the transmission assembly 500 includes two first rocker shafts 510, two first pull rods 520, two first rockers 530, and two second pull rods 540. The first rocker shafts 510 are arranged in one-to-one correspondence with the housings 310. One end of the first rocker shaft 510 is coaxial with the rotation axis of the clamping portion 320. One end of the first pull rod 520 is hinged to the other end of the first rocker shaft 510. The first rocker 530 is rotatably connected to the housing 310, and one end of the first rocker 530 is hinged to the other end of the first pull rod 520. One end of the second pull rod 540 is hinged to the other end of the first rocker 530, and the other end of the second pull rod 540 is hinged to the other end of the other second pull rod 540, and is used to drive the adjacent two clamping portions 320 to rotate around their respective rotation axes.

[0041] The rocker arm assembly is composed of two first rocker shafts 510, two first pull rods 520, two first rockers 530, and two second pull rods 540, and the energy of the rotation of the clamping portion 320 is transmitted, so as to drive the other grinding portion 330 to grind the backlash elimination gear set 100.

[0042] As another implementation, such as Figure 3 shown, the driving assembly 400 further includes a second rotating shaft 440 and a second driving disk 450. The second rotating shaft 440 is rotatably arranged on the bracket 410, and the second rotating shaft 440 is coaxially arranged with the rotation axis of another grinding part 330 and is connected to the grinding part 330. The second driving disk 450 is fixedly sleeved on the second rotating shaft 440 and is used to drive the second rotating shaft 440 and another grinding part 330 to rotate around their rotation axes.

[0043] The second rotating shaft 440 and the second driving disk 450 are connected to another grinding part 330, so that the user can drive the two groups of grinding parts 330 to grind the backlash eliminating gear set 100 by rotating the first driving disk 430 or the second driving disk 450.

[0044] As another implementation, such as Figure 1 、 Figure 3 shown, the device further includes two first supports 600 and a first fixing rod 700. The two first supports 600 are arranged at intervals and are both fixedly connected to the base 200. The two ends of the first fixing rod 700 are respectively fixedly connected to the two first supports 600. The two ends of the two shells 310 facing away from the grooves are respectively provided with first through holes. The two shells 310 are arranged at intervals along the length direction of the first fixing rod 700 and are respectively sleeved on the first fixing rod 700 through the two first through holes.

[0045] Specifically, in this device, the two shells 310 for installing the grinding part 330 and the backlash eliminating gear set 100 are arranged at intervals along the length direction of the first fixing rod 700, and the distance between the two shells 310 can be adjusted accordingly.

[0046] Furthermore, the length of the second pull rod 540 can be adaptively adjusted according to the interval between the two shells 310.

[0047] Still further, the bracket 410 includes two second supports and a second fixing rod. The two second supports are arranged at intervals relative to the two first supports 600 and are both connected to the base 200. The first rotating shaft 420 and the second rotating shaft 440 are arranged at intervals and are slidably sleeved on the second fixing rod in cooperation with the two shells 310 for adaptively adjusting according to the distance between the two shells 310. The connection structure between the first rotating shaft 420 and the second rotating shaft 440 and the second fixing rod will not be elaborated here.

[0048] Such as Figure 1 、 Figure 4As shown, the device further includes a damping assembly 800. The damping assembly 800 includes a damper 810 which has a fixed end and a movable end. The fixed end of the damper 810 is connected to the base 200, and the movable end is detachably hinged to the other end of the second pull rod 540, and is used to test the grinding effect of the backlash elimination gear set 100.

[0049] The damping assembly 800 is connected to the second pull rod 540. The user can selectively install the damping assembly 800. When the damping assembly 800 is not installed, the backlash elimination gear set 100 is ground normally. When the damping assembly 800 is installed, the grinding effect of the backlash elimination gear set 100 can be tested by rotating the damping assembly 800.

[0050] Further, the acting force of the second pull rod 540 is transmitted to the damper 810. The damper 810 provides a constant load acting force to the process steering wheel, and the constant load it provides effectively simulates the aileron control load. Here, the damper 810 is a common and easily purchasable device in the market, which is a conventional setting well-known to those skilled in the art and will not be elaborated further.

[0051] As one implementation, as Figure 3 shown, the damping assembly 800 further includes a first connecting rod 820, a second connecting rod 830 and a second rocker arm 840. One end of the first connecting rod 820 is hinged to the other ends of the two second connecting rods 830, and the other end is hinged to the base 200. One end of the second connecting rod 830 is detachably hinged to the middle part of the first connecting rod 820. The second rocker arm 840 is rotatably connected to the base 200, and one end of the second rocker arm 840 is hinged to the other end of the second connecting rod 830, and the other end is hinged to the movable end of the damper 810.

[0052] The damper 810 transfers the motion from the second pull rod 540 to the damper 810 through the detachable hinge structure formed by the first connecting rod 820, the second connecting rod 830 and the second rocker arm 840, so as to realize the detection of the auxiliary grinding effect. The fact that the first connecting rod 820 is hinged to both of the two second pull rods 540 can improve the stability when the two second pull rods 540 move.

[0053] Specifically, the driving assembly 400 in this device should further include a universal joint 460. One end of the universal joint 460 is rotatably connected to the second through hole, and the other end is connected to the first rotating shaft 420. The grinding part 330 includes a circular gear 331, bearings, keys, bushings and fastening screws, etc. The circular gear 331 is fixedly sleeved on the universal joint 460 through bearings, keys, bushings and fastening screws, etc., and is used to realize the rotational connection between the grinding part 330 and the housing 310.

[0054] Further, one end of the first rocker arm shaft 510 in the device is rotatably inserted into the first through hole, and the clamping portion 320 includes a bearing, a key, a gasket, a nut, a fastening screw, a split pin, etc. The backlash elimination gear set 100 is fixedly sleeved on the first rocker arm shaft 510 through a bearing, a key, a gasket, a nut, a fastening screw, a split pin, etc., so that the backlash elimination gear set 100 can transmit motion to the first rocker arm shaft 510 while being ground, thereby driving the adjacent circular gear 331 and the backlash elimination gear set 100 to rotate, or driving the damper 810 to move.

[0055] For the specific working process of the present invention, at least one grinding assembly 300 is provided on the base 200. The grinding assembly 300 includes a housing 310, a clamping portion 320 and a grinding portion 330. The clamping portion 320 is rotatably connected to the housing 310 and is used to detachably connect the backlash elimination gear set 100 to the housing 310. At the same time, the grinding portion 330 is rotatably connected to the housing 310 and meshes with the clamped backlash elimination gear set 100. Driven by the rotating end of the driving assembly 400, the grinding portion 330 rotates around its rotation axis and drives the backlash elimination gear set 100 to rotate around the rotation axis of the clamping portion 320 to realize the grinding of the backlash elimination gear set 100. Compared with the prior art, the user drives the grinding portion 330 to rotate by setting the driving assembly 400, and the rotated grinding portion 330 realizes the grinding of the backlash elimination gear set 100 through the meshing with the backlash elimination gear set 100.

[0056] When the device is in use, first, it is ground with No. 240 coarse abrasive paste. The coarse abrasive paste grinding is divided into three separate grinding sections, and then it is ground as a whole with No. 1000 fine abrasive paste. Finally, the grinding effect is detected.

[0057] Specifically, first, apply No. 240 coarse abrasive paste on 4 teeth at the left end of the sector gear set. When grinding, turn the first driving disk 430 or the second driving disk 450 with both hands, rotate clockwise and then counterclockwise for repeated grinding. The force and frequency should be as uniform as possible, not too fast or too slow. At the beginning, the jamming and jumping are very obvious. After repeated rotation and grinding for many times, it will become smoother and smoother. After grinding, wash all the gears with washing gasoline; secondly, apply No. 240 coarse abrasive paste on 4 teeth at the right end of the sector gear set, and the grinding method is the same as that for grinding the left-side gear; thirdly, apply No. 240 coarse abrasive paste on the teeth other than the four teeth at both ends of the sector gear set, and the grinding method is the same as that for grinding the left and right sides; finally, perform overall grinding with No. 1000 fine abrasive paste to ensure no jamming, no jumping, no clearance, and smooth and stable meshing of the gears. Wash the sector gear set and the circular gear 331 with washing gasoline to wash off all the abrasive paste and metal chips. After cleaning, blow dry all the parts with cold air, and apply 932 grease to the meshing part of the sector gear set and the circular gear 331.

[0058] Further, when detecting the grinding effect, first connect the damper 810, rotate either the first driving disk 430 or the second driving disk 450. The left and right circular gears 331 work synchronously, and check the meshing effect between the sector gear set and the circular gears 331. There should be no tactile force, tight interference, free travel and other fault phenomena at any angle during operation. When detecting, the fixed-value damper 810 (2 kgf, 4 kgf, 6 kgf) can be replaced at any time according to the grinding situation to check the grinding condition of the gears. Fix the universal joint 460 connecting the gears, move the sector gear 110 from one extreme position to the other extreme position, and use a dial indicator to measure the stroke of the lever arm point at 110 mm. Multiply the stroke of the lever arm point at 110 mm by the pitch circle radius of the sector gear 110, and then divide by 110 mm. The result obtained is the active clearance of the gear meshing. Ensure that the active clearance of the gear meshing is not greater than 0.05 mm.

[0059] Among them, when rotating either the first driving disk 430 or the second driving disk 450 arbitrarily, the first rotating shaft 420 or the second rotating shaft 440 drives the universal joint 460 connected to the circular gear 331 to rotate. The rotating circular gear 331 meshes with the backlash eliminator gear. Then, the rotating backlash eliminator gear set 100 drives the first rocker arm shaft 510 to rotate, thereby driving the movement of the first pull rod 520, the first rocker arm 530 and the second pull rod 540. Finally, the movement is transmitted to the other housing 310 through the mutually hinged second pull rod 540, so that the circular gears 331 and the backlash eliminator gears on the other housing 310 are meshed synchronously.

[0060] Further, when the second connecting rod 830 is installed on the first connecting rod 820, after the movement is first transmitted to the second pull rod 540, it will be transmitted to the damper 810 through the first connecting rod 820, the second connecting rod 830 and the second rocker arm 840, and the load force generated by the damper 810 is used to feedback and detect the grinding effect.

[0061] Through the above structure, the present device can solve the technical problems of long cycle, low efficiency and poor grinding effect in the prior art due to manual grinding.

[0062] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A grinding device for aircraft backlash gears, which is used to grind a backlash gear set, and is characterized in that, Comprising: Base; Two grinding assemblies, each grinding assembly including a housing, a clamping portion and a grinding portion. The two housings are spaced apart on the base. The clamping portion is rotatably connected to the housing and is used for detachably connecting the backlash elimination gear set. The grinding portion is rotatably connected to the housing and meshes with the backlash elimination gear set; A driving assembly having a fixed end and a rotating end. The fixed end of the driving assembly is connected to the base and the rotating end is connected to the grinding portion, for driving the grinding portion to rotate about its own axis and driving the backlash elimination gear set to rotate about the rotation axis of the clamping portion through the grinding portion to grind the backlash elimination gear set; Wherein, a groove is formed at the top of the housing, and the housing is further provided with a first through hole that penetrates the inner walls on both sides of the groove. The clamping portion is detachably connected to the housing and can rotate about the axis of the first through hole. The backlash elimination gear set is slidably inserted into the groove and sleeved on the clamping portion, and the backlash elimination gear set can rotate with the clamping portion about the axis of the clamping portion; Wherein, the housing is further provided with a second through hole, which is arranged above the first through hole and penetrates the inner walls on both sides of the groove. The grinding portion is slidably inserted into the groove and can rotate about the axis of the second through hole, and the grinding portion meshes with the backlash elimination gear set; Wherein, the driving assembly includes a bracket, a first rotating shaft and a first driving disk. The bracket is spaced apart from the housing. The first rotating shaft is rotatably connected to the bracket, and the first rotating shaft is coaxially arranged with the rotation axis of the grinding portion and is connected to the grinding portion. The first driving disk is fixedly sleeved on the first rotating shaft for driving the first rotating shaft and the grinding portion to rotate about the axis of the second through hole; Wherein, the aircraft backlash elimination gear grinding device further includes a transmission assembly, and the transmission assembly is connected to both grinding portions; Wherein, the driving assembly further includes a second rotating shaft and a second driving disk. The second rotating shaft is rotatably arranged on the bracket, and the second rotating shaft is coaxially arranged with the rotation axis of the other grinding portion and is connected to the grinding portion. The second driving disk is fixedly sleeved on the second rotating shaft for driving the second rotating shaft and the other grinding portion to rotate about its rotation axis.

2. The aircraft backlash elimination gear grinding device according to claim 1, wherein, The transmission assembly includes two first rocker shafts, two first pull rods, two first rockers and two second pull rods. The first rocker shafts are arranged corresponding to the housings one by one. One end of the first rocker shaft is coaxially arranged with the rotation axis of the clamping portion. One end of the first pull rod is hinged to the other end of the first rocker shaft. The first rocker is rotatably connected to the housing, and one end of the first rocker is hinged to the other end of the first pull rod. One end of the second pull rod is hinged to the other end of the first rocker, and the other end of the second pull rod is hinged to the other end of the other second pull rod for driving the two adjacent clamping portions to rotate about their respective rotation axes respectively.

3. The aircraft backlash elimination gear grinding device according to claim 2, wherein, The aircraft anti-backlash gear grinding device also includes a damping assembly, which includes a damper. The damper has a fixed end and a movable end. The fixed end of the damper is connected to the base, and the movable end is detachably hinged to the other end of the second pull rod for testing the grinding effect of the anti-backlash gear set.

4. The aircraft backlash elimination gear grinding device according to claim 3, characterized in that, The damping assembly also includes a first connecting rod, a second connecting rod and a second rocker arm. One end of the first connecting rod is hinged to the other ends of the two second connecting rods, and the other end is hinged to the base. One end of the second connecting rod is detachably hinged to the middle part of the first connecting rod. The second rocker arm is connected to the base for rotation, and one end of the second rocker arm is hinged to the other end of the second connecting rod, and the other end is hinged to the movable end of the damper.

5. The aircraft backlash elimination gear grinding device according to claim 1, wherein It also includes two first supports and a first fixing rod. The two first supports are arranged at intervals and are fixedly connected to the base. The two ends of the first fixing rod are respectively fixedly connected to the two first supports. The two shells are respectively provided with first through holes at one end away from the groove. The two shells are arranged at intervals along the length direction of the first fixing rod and are respectively sleeved on the first fixing rod through the two first through holes.

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