Tooth surface grinding device for machining remanufactured gear of speed reducer

Abstract

The invention relates to the field of speed reducer tooth surface processing, in particular to a tooth surface grinding device for speed reducer remanufacturing gear processing, in the gear detection process, metal scraps left on the tooth surface can interfere with probe rod measurement, if the scraps are attached to the tooth surface, the contour detected by a probe rod may be the scrap height instead of the real tooth surface involute, and the detection result is accurate. Therefore, the accuracy and the reliability of the detection result are influenced. When the involute of the tooth surface is detected, the two feeler levers move relatively to extrude the air bag between the two feeler levers, the air bag is extruded and then blows air into tooth seams of the teeth, metal scraps in the teeth are further removed, the feeler levers are utilized to gradually pressurize the air bag, the air in the air bag is made to clean the tooth seams, and therefore the involute of the tooth surface is detected. Measurement data fluctuation caused by randomness of residual chippings is avoided, and the gear detection precision of the probe rod is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of gear face processing of a speed reducer, in particular to a gear face grinding device for gear machining of a speed reducer. BACKGROUND

[0002] A speed reducer is a key transmission device connecting a prime mover and a working machine or an actuator, mainly serving to match rotational speed and transmit torque, and is widely used in modern mechanical equipment. According to different uses, the speed reducer can be divided into two categories: general speed reducers and special speed reducers, which have significant differences in design, manufacturing and use. In the production and remanufacturing process of the speed reducer, precise grinding of the gear tooth surface is an important process to ensure the transmission performance.

[0003] In particular, in the process of speed reducer remanufacturing, accurate detection of the ground gear tooth surface is a key link to realize the transformation from "repair" to "quality improvement". Through scientific data collection and quantitative evaluation, the remanufactured gear is ensured to meet the new piece standard in terms of size accuracy and tooth surface geometry, thereby ensuring the overall reliability and service life of the remanufactured speed reducer.

[0004] The following problems in the prior art have not been well solved:

[0005] First, during the meshing of a pair of gears, the theoretical center distance is determined by the tooth profile geometry. If the tooth surface grinding is uneven or inconsistent, it will cause fluctuations in the actual center distance, thereby affecting the transmission accuracy, stability and gear life.

[0006] Second, during the gear detection process, metal debris remaining on the tooth surface will interfere with the measurement of the probe. If the debris adheres to the tooth surface, the profile detected by the probe may be the height of the debris rather than the true tooth surface involute, resulting in serious distortion of the measurement data and affecting the accuracy and reliability of the detection results. SUMMARY

[0007] The purpose of the present application is to provide a gear face grinding device for gear machining of a speed reducer, to solve the problems raised in the background art. To achieve the above purpose, the present application provides the following technical solution: a gear face grinding device for gear machining of a speed reducer, comprising a machining table, a bearing disc for mounting gears is rotatably connected to the top of the machining table, a grinding component is provided on the top of the machining table towards the direction of the teeth, a rotating component is rotatably connected to the top of the machining table, the rotating component drives the bearing disc to rotate intermittently on the machining table, a detection component is provided on the top of the machining table towards the teeth after grinding, the rotating component drives the detection component to extend towards the teeth to detect the tooth surface involute on both sides of the teeth after grinding, and a cleaning part is further provided on the detection component to remove metal debris in the teeth to improve detection accuracy.

[0008] Preferably, the rotating component includes a servo motor, which is fixedly connected to the top of the machining table. A drive disk is shaft-connected to the spindle of the servo motor. A rotating rod is rotatably connected to the machining table, and a rotating disk is mounted on the rotating rod. A belt connects the drive disk and the rotating disk. A bearing disk is rotatably connected to the rotating rod. An intermittent frame is eccentrically connected to the end face of the rotating disk away from its axis. A positioning roller is rotatably connected to the machining table. One end of the intermittent frame has a limiting groove that limits the positioning roller's slide groove. Positioning rods are distributed around the circumference of the end face of the bearing disk. A snap-fit ​​groove is provided at the end of the intermittent frame away from the limiting groove that engages with the positioning rods.

[0009] Preferably, the detection component includes a movable frame slidably connected to a processing table, a rotating roller is provided on the movable frame, a connecting frame is sleeved on the rotating roller, the other end of the connecting frame away from the rotating roller is hinged to an intermittent frame, a movable groove is provided on the processing table, the movable frame moves along the guide of the movable groove toward the direction of the gear teeth, movable plates are fixedly connected to both sides of the movable frame, a probe is axially slidably connected to the movable plate, the end of the probe contacts the gear tooth surface through a sliding roller, a wedge block is fixedly connected to the probe, a compression spring is sleeved on the probe, and the two ends of the compression spring contact the probe and the wedge block respectively.

[0010] Preferably, the detection component further includes a support rod slidably connected to the processing table, a support frame fixedly connected to the support rod, a measuring turntable rotatably connected to the support frame, a sensor disposed on the measuring turntable and electrically connected to the grinding component, an external gear ring disposed on the outer wall of the measuring turntable, a measuring frame disposed on the movable frame that wedges with two wedge blocks, the measuring frame and the movable frame being slidably connected by a fixed rod, a connecting spring sleeved on the fixed rod, the two ends of the connecting spring being connected to the measuring frame and the movable frame respectively, and a rack meshing with the external gear ring on the inner wall of the measuring frame.

[0011] Preferably, the cleaning unit includes an airbag positioned between the two probes. The airbag is positioned between the two movable plates and is connected to an air pump via an external connecting pipe. A nozzle is provided at the angle of the airbag toward the teeth. The airbag is squeezed by the two probes to remove metal debris from the teeth, thereby improving detection accuracy.

[0012] Preferably, the grinding component includes a movable slide fixedly mounted on the processing table, the movable slide is equipped with a rotary motor, the rotary motor is connected to a grinding disc through a reducer, and the grinding disc extends toward the teeth.

[0013] Preferably, the cleaning unit includes two wedge-shaped airbags, which are respectively mounted on two movable plates. One side of each wedge-shaped airbag is set as an inclined surface similar to the tooth profile of a gear and is embedded with a large number of micropores. The micropores are located below the wedge-shaped airbag and perpendicular to the tooth surface. A squeezing plate for squeezing the wedge-shaped airbag is fixedly connected to the probe rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] In this invention, the equally divided intermittent motion ensures that the positioning accuracy of each gear tooth is the same when it moves to the grinding position, eliminating the cumulative error caused by repeated clamping or changes in positioning reference, and ensuring a high degree of consistency in the grinding size and shape of all teeth. There is no need to configure a complete grinding system for each station. By cooperating with a precision indexed bearing plate through a grinding component, all teeth can be processed in sequence.

[0016] In this invention, the simultaneous detection by the probe can measure the difference between the two surfaces, and can directly and accurately reflect the defects in the processing. For example, if a deviation occurs, such as the left side of the tooth being ground down more than the right side, the tool angle can be immediately determined and the grinding wheel dressing problem can be adjusted.

[0017] In this invention, the involute curves of the opposing tooth surfaces are detected in real time by a detection component, ensuring that the tooth profiles of the opposing tooth surfaces are consistent. This ensures that the contact stress of the gear is evenly distributed during meshing after grinding, avoiding stress concentration and thus improving the fatigue life and load-bearing capacity of the gear.

[0018] In this invention, when detecting the involute of the tooth surface, the relative movement of the two probes compresses the air bladder between them. After being compressed, the air bladder sprays air into the gaps between the teeth, thereby removing metal debris located inside the teeth. By gradually increasing the pressure of the air bladder with the probes, the gas inside the air bladder cleans the gaps between the teeth, avoiding fluctuations in measurement data caused by the randomness of debris residue, and improving the accuracy of the probes in detecting gears.

[0019] In this invention, the wedge-shaped airbag blows gas along the tooth surface through micropores. The airflow acts directly and vertically on the tooth surface, concentrating energy and avoiding airflow waste and eddy current generation. Since the airflow is wrapped around both sides of the tooth, the blown debris is thrown towards the outer edge of the tooth, thereby reducing the risk of debris splashing onto other parts due to the airflow and effectively improving the accuracy of involute detection on the tooth surface. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a three-dimensional structural development view of the gear, bearing plate, and processing table of the present invention;

[0022] Figure 3 This is a partial three-dimensional structural diagram of the rotating component and the bearing disk in this invention;

[0023] Figure 4 This is a three-dimensional structural diagram of the rotating component in this invention;

[0024] Figure 5 This is a bottom view of the support disk and rotating component in this invention;

[0025] Figure 6 This is a top view of the carrier disk and rotating component in this invention;

[0026] Figure 7 This is a three-dimensional structural diagram of the detection component in this invention;

[0027] Figure 8 This is a plan view of the detection component and airbag in this invention;

[0028] Figure 9 This is a plan view of the detection component and the wedge-shaped contoured airbag in the second embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram of the three-dimensional structure of the detection component and the wedge-shaped airbag in the second embodiment of the present invention.

[0030] In the diagram: 1. Processing table; 11. Bearing plate; 2. Rotating component; 21. Servo motor; 22. Drive plate; 23. Rotating rod; 24. Rotating plate; 25. Belt; 26. Intermittent frame; 27. Positioning roller; 28. Limiting groove; 29. ​​Positioning rod; 210. Snap-fit ​​groove; 3. Detection component; 31. Moving frame; 32. Rotating roller; 33. Connecting frame; 34. Moving groove; 35. Moving plate; 36. Probe; 37. Wedge block; 38. Compression spring; 39. Support rod; 310. Support frame; 311. Measuring turntable; 312. External gear ring; 313. Measuring frame; 314. Fixing rod; 315. Connecting spring; 316. Rack; 4. Cleaning section; 41. Airbag; 42. Wedge-shaped contour airbag; 421. Extrusion plate; 5. Grinding component; 51. Moving slide; 52. Rotary motor; 53. Grinding plate. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1

[0033] Please see Figures 1 to 8 As shown, the present invention provides a technical solution: a gear surface grinding device for remanufacturing gears of a speed reducer, comprising a processing table 1, a bearing disk 11 for mounting gears rotatably connected to the top of the processing table 1, a grinding component 5 disposed on the top of the processing table 1 facing the teeth, a rotating component 2 rotatably connected to the top of the processing table 1, the rotating component 2 driving the bearing disk 11 to rotate intermittently on the processing table 1, a detection component 3 disposed on the top of the processing table 1 facing the ground teeth, the rotating component 2 driving the detection component 3 to extend into the teeth to detect the involute lines on both sides of the ground teeth, and a cleaning part 4 disposed on the detection component 3 to remove metal debris from the teeth and improve detection accuracy.

[0034] In this embodiment, the rotating component 2 includes a servo motor 21, which is fixedly connected to the top of the processing table 1. A drive disk 22 is shaft-connected to the main shaft of the servo motor 21. A rotating rod 23 is rotatably connected to the processing table 1, and a rotating disk 24 is provided on the rotating rod 23. A belt 25 is connected between the drive disk 22 and the rotating disk 24. The bearing disk 11 is rotatably connected to the rotating rod 23. An intermittent frame 26 is eccentrically connected to the end face of the rotating disk 24 away from the axis of the rotating disk 24. A positioning roller 27 is rotatably connected to the processing table 1. A limiting groove 28 is provided at one end of the intermittent frame 26 to limit the sliding groove of the positioning roller 27. Positioning rods 29 are distributed around the circumference of the end face of the bearing disk 11. A snap-fit ​​groove 210 is provided at the end of the intermittent frame 26 away from the limiting groove 28 to engage with the positioning rods 29.

[0035] The gear is ground on the opposite surfaces of the teeth by the grinding component 5. After grinding, the gear is rotated by the bearing disk 11 so that the teeth on the adjacent sides are set towards the grinding component 5. The gear and the bearing disk 11 are connected by a threaded connection through its mounting hole. This method is existing technology and will not be described in detail.

[0036] Servo motor 21 drives drive disk 22 to rotate, and belt 25 drives rotating disk 24 to rotate synchronously. When rotating disk 24 rotates, intermittent frame 26 eccentrically connected at its end moves around the circumference of rotating disk 24. One end of intermittent frame 26 moves snap-fit ​​groove 210 toward positioning rod 29 of bearing disk 11 under the restriction of positioning roller 27. Snap-fit ​​groove 210 and positioning rod 29 periodically engage and disengage, driving bearing disk 11 to achieve precise equal-division intermittent movement. Positioning rod 29 corresponds to the number of teeth of gear. Through equal-division intermittent movement of bearing disk 11, after the teeth of gear are ground by grinding component 5, the teeth on the adjacent side of the gear can be moved to the underside of grinding component 5 for further processing.

[0037] The equally spaced intermittent motion ensures that the positioning accuracy of each gear tooth is the same when it moves to the grinding position, eliminating the cumulative error caused by repeated clamping or changes in positioning reference. This guarantees a high degree of consistency in the grinding dimensions and shape of all teeth. There is no need to configure a complete grinding system for each station. By cooperating with a precision indexing bearing plate 11 through a grinding component 5, all teeth can be processed in sequence.

[0038] In this embodiment, the detection component 3 includes a movable frame 31 slidably connected to the processing table 1. A rotating roller 32 is provided on the movable frame 31, and a connecting frame 33 is sleeved on the rotating roller 32. The other end of the connecting frame 33 away from the rotating roller 32 is hinged to the intermittent frame 26. A movable groove 34 is provided on the processing table 1. The movable frame 31 moves along the guide of the movable groove 34 toward the direction of the gear teeth. Movable plates 35 are fixedly connected to both sides of the movable frame 31. A probe rod 36 is axially slidably connected to the movable plate 35. The end of the probe rod 36 contacts the gear tooth surface through a sliding roller. A wedge block 37 is fixedly connected to the probe rod 36. A compression spring 38 is sleeved on the probe rod 36. The two ends of the compression spring 38 contact the probe rod 36 and the wedge block 37, respectively.

[0039] After the teeth on the gear are ground by the grinding component 5, the tooth surface after grinding ensures that the tooth profile curve is close to the theoretical shape and ensures smooth meshing. When the intermittent frame 26 drives the bearing plate 11 to rotate, the intermittent frame 26 moves eccentrically on the rotating plate 24. Through the connecting frame 33, it drives the moving frame 31 to slide back and forth in the moving groove 34. After the teeth of the gear are ground, the moving frame 31 extends towards the ground teeth to detect the tooth surface opposite to the teeth. The moving frame 31 moves, driving the two moving plates 35 to move synchronously. The probe 36 set on the moving plate 35 moves along the involute of the tooth surface through the sliding roller under the action of the compression spring 38. During the movement, the probe 36 is affected by the tooth surface, which causes the two probes 36 to be relatively displaced, thereby synchronously detecting the relative tooth surface of the teeth and checking whether the relative tooth surface grinding degree of the teeth is consistent.

[0040] The consistent displacement trajectories of the two probes 36 indicate good tooth profile symmetry and high machining quality, avoiding errors caused by measuring the teeth at different times. Furthermore, the simultaneous detection by the probes 36 can measure the differences between the two surfaces, directly and accurately reflecting defects in the machining process. If a deviation occurs, such as the left side of the tooth being ground down more than the right side, the tool angle can be immediately determined, and the grinding wheel dressing problem can be adjusted.

[0041] In this embodiment, the detection component 3 further includes a support rod 39 slidably connected to the processing table 1. A support frame 310 is fixedly connected to the support rod 39. A measuring turntable 311 is rotatably connected to the support frame 310. A sensor is provided on the measuring turntable 311 and is electrically connected to the grinding component 5. An external gear ring 312 is provided on the outer wall of the measuring turntable 311. A measuring frame 313 is provided on the moving frame 31 to wedge with two wedge blocks 37. The measuring frame 313 and the moving frame 31 are slidably connected by a fixing rod 314. A connecting spring 315 is sleeved on the fixing rod 314. The two ends of the connecting spring 315 are respectively connected to the measuring frame 313 and the moving frame 31. A rack 316 that meshes with the external gear ring 312 is provided on the inner wall of the measuring frame 313.

[0042] Two probes 36 extend toward the teeth under the drive of the moving plate 35. While the moving frame 31 drives the moving plate 35 to move, the moving frame 31 synchronously drives the two wedge-shaped measuring frames 313 to move through the fixed rod 314 and the connecting spring 315. The measuring frames 313 are wedge-shaped connected with the corresponding wedge blocks 37. When the involute lines of the tooth surfaces opposite each other are aligned, the two probes 36 are squeezed by the tooth surfaces and drive the wedge blocks 37 to move. The two wedge blocks 37 drive the two measuring frames 313 to move synchronously through their inclined surfaces. The measuring turntable 311 meshes with the racks 316 on the two measuring frames 313 through the external gear ring 312. When the two measuring frames 313 move synchronously, the measuring turntable 311 is axially displaced under the drive of the two measuring frames 313, so that the support rod 39 slides on the processing table 1. After grinding, the tooth surfaces opposite each other have the same grinding thickness.

[0043] When the two probes 36 move and the involute curves of the tooth surfaces on both sides are inconsistent, the two probes 36 move axially on the moving plate 35 at different distances during the movement. At this time, when the two wedge blocks 37 press the measuring frame 313 to move, the two measuring frames 313 will be relatively displaced. As a result, the outer gear ring 312 will drive the measuring turntable 311 to rotate under the drive of the rack 316. The measuring turntable 311 then controls the grinding component 5 to stop grinding the teeth in time through the sensor. The detection component 3 detects the involute curves of the tooth surfaces in real time to ensure that the tooth profiles of the tooth surfaces are consistent. This ensures that the contact stress of the gear is evenly distributed when meshing after grinding, which can avoid stress concentration and thus improve the fatigue life and load-bearing capacity of the gear.

[0044] In this embodiment, the cleaning unit 4 includes an airbag 41 disposed between two probes 36. The airbag 41 is disposed between two movable plates 35 and is connected to an air pump through an external connecting pipe. A nozzle is provided at the angle of the airbag 41 toward the teeth. The airbag 41 is squeezed by the two probes 36 to remove metal debris in the teeth and improve detection accuracy.

[0045] After the gear teeth are ground, they contain ground metal debris. This debris can affect the accuracy of the probe 36 in detecting the involute curve of the tooth surface. If the debris accumulates on the tooth surface, the probe 36 may actually measure the height of the debris instead of the true involute curve, resulting in serious distortion of the measurement data. Furthermore, the metal debris can interfere with electronic components such as sensors, causing false alarms. When detecting the involute curve of the tooth surface, the relative movement of the two probes 36 will compress the air bladder 41 between them. After being compressed, the air bladder 41 will spray air into the gaps between the teeth, thereby removing the metal debris inside the teeth. By gradually increasing the pressure of the air bladder 41 by the probe 36, the gas inside the air bladder 41 can clean the gaps between the teeth, avoiding fluctuations in measurement data caused by the randomness of debris residue and improving the accuracy of the probe 36 in detecting the gear.

[0046] In this embodiment, the grinding component 5 includes a movable slide 51 fixedly mounted on the processing table 1. The movable slide 51 is equipped with a rotary motor 52. The rotary motor 52 is connected to a grinding disc 53 through a reducer. The grinding disc 53 extends toward the teeth.

[0047] The height of the grinding disc 53 is adjusted by moving the slide table 51. Driven by the rotary motor 52, the relative tooth surfaces of the teeth are simultaneously ground by the grinding disc 53. The two tooth surfaces are ground at the same time and evenly, ensuring that the shape and size of all teeth are consistent.

[0048] Example 2

[0049] To further enhance the cleaning power of the cleaning unit 4 during the airflow cleaning process for removing tooth debris, such as Figures 9-10 As shown, further improvements are made to Embodiment 1:

[0050] The cleaning unit 4 includes two wedge-shaped airbags 42, which are respectively mounted on two movable plates 35. One side of each wedge-shaped airbag 42 is designed as an inclined surface similar to the tooth profile of a gear and is embedded with a large number of micropores. The micropores are located below the wedge-shaped airbag 42 and perpendicular to the tooth surface. A compression plate 421 for compressing the wedge-shaped airbags 42 is fixedly connected to the probe rod 36.

[0051] During the movement of the moving plate 35, the wedge-shaped profiling airbag 42 moves along the tooth surface. The wedge-shaped profiling airbag 42 fits against the tooth surface and is gradually squeezed by the extrusion plate 421 on the probe 36. The wedge-shaped profiling airbag 42 blows gas along the tooth surface through micropores. The airflow acts directly and vertically on the tooth surface, concentrating energy and avoiding airflow waste and eddy current generation. Since it is a wrap-around blowing from both sides of the tooth, the blown debris will be thrown towards the outer edge of the tooth, thereby reducing the risk of debris splashing onto other parts due to the airflow and effectively improving the accuracy of involute detection of the tooth surface.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gear surface grinding device for remanufacturing gears in a speed reducer, comprising: The processing table (1) has a support plate (11) for mounting gears rotatably connected to its top. The grinding component (5) is set on the top of the processing table (1) and faces the direction of the gear teeth; The rotating component (2) is located on the top of the processing table (1) and drives the carrier plate (11) to rotate intermittently; The detection component (3) is set on the top of the processing table (1) and is used to detect the involute on both sides of the tooth surface after grinding after the gear rotates intermittently; The cleaning part (4) is installed on the detection part (3) and is used to remove metal debris from the teeth.

2. The gear surface grinding device for remanufacturing gears of a speed reducer according to claim 1, characterized in that: The rotating component (2) includes: Servo motor (21) is connected to the top of the machining table (1); The drive disk (22) is connected to the spindle of the servo motor (21); Rotating rod (23) is rotatably connected to the processing table (1); A rotating disk (24) is mounted on a rotating rod (23) and connected to a drive disk (22) via a belt (25); Intermittent frame (26) is eccentrically connected to the end face of rotating disk (24); Positioning roller (27) is rotatably connected to the machining table (1); A limiting groove (28) is provided at one end of the intermittent frame (26) and is limited and matched with the groove of the positioning roller (27); Multiple positioning rods (29) are distributed around the end face of the bearing plate (11); A snap-fit ​​groove (210) is provided at the other end of the intermittent frame (26) and periodically engages and disengages with the positioning rod (29).

3. The gear surface grinding device for remanufacturing gears of a speed reducer according to claim 2, characterized in that: The detection component (3) includes: The movable frame (31) is slidably connected to the processing table (1); Rotate the roller (32) and set it on the movable frame (31); The connecting frame (33) is sleeved on the rotating roller (32) and hinged to the intermittent frame (26); A moving slot (34) is provided on the processing table (1) to guide the moving frame (31); Two movable plates (35) are fixedly connected to both sides of the movable frame (31); Two probes (36) are axially slidably connected to the movable plate (35); Two wedge-shaped blocks (37) are fixedly connected to the probe rod (36); A compression spring (38) is sleeved on the probe rod (36), with its two ends in contact with the probe rod (36) and the wedge block (37) respectively.

4. The gear surface grinding device for remanufacturing gears of a speed reducer according to claim 3, characterized in that: The detection component (3) also includes: Support rod (39) is slidably connected to the processing table (1); The support frame (310) is fixedly connected to the support rod (39); The measuring turntable (311) is rotatably connected to the support frame (310); An external gear ring (312) is disposed on the outer wall of the measuring turntable (311); The measuring frame (313) is wedge-shaped and engages with the corresponding wedge block (37); A connecting spring (315) is sleeved on a fixed rod (314), and its two ends are connected to a measuring frame (313) and a moving frame (31) respectively; A rack (316) is disposed on the inner wall of the measuring frame (313) and meshes with the outer gear ring (312).

5. The gear surface grinding device for remanufacturing gears of a speed reducer according to claim 3, characterized in that: The cleaning unit (4) includes: An airbag (41) is positioned between two probes (36) and faces the nozzle at the tooth angle. When the two probes (36) move relative to each other, they compress the airbag (41) to release air.

6. The gear surface grinding device for remanufacturing gears of a speed reducer according to claim 5, characterized in that: The cleaning unit (4) also includes: Two wedge-shaped airbags (42) are respectively set on two movable plates (35), and their sides are provided with inclined surfaces similar to tooth profiles and multiple micro-holes; The extrusion plate (421) is connected to the probe (36) for extruding the wedge-shaped airbag (42). The wedge-shaped airbag (42) is compressed and then sprays air through micropores onto the tooth surface.

7. The gear surface grinding device for remanufacturing gears of a speed reducer according to claim 1, characterized in that: The grinding component (5) includes: A movable slide (51) is fixedly mounted on the processing table (1); A rotary motor (52) is mounted on a movable slide (51); The grinding disc (53) is connected to the rotary motor (52) via a reducer and is oriented toward the teeth.

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