Intertooth feeding polishing equipment for gear

Abstract

The invention relates to the technical field of gear machining, and discloses inter-tooth feeding polishing equipment for gears, which comprises a positioning seat, a limiting mechanism and a polishing mechanism, the positioning seat comprises a pair of supporting plates, the limiting mechanism comprises a connecting base and a lifting plate, the polishing mechanism comprises a fixing frame, and a control motor is mounted at the rear end of the fixing frame. A conveying shaft is installed at the output end of the control motor, a fixed end block is installed at one end of the conveying shaft, a hollow groove is formed in the fixed end block, and reset plates are installed at the two ends of the fixed end block; compared with the prior art, the movable insertion rod abuts against the gap of the outer wall of the gear, the conical protrusion at the top end can be clamped in the gap of the outer gear, the situation that dead corners are not ground is reduced, the telescopic rod moves in the grinding process, the movable insertion rod can move in the gap of the gear, and the movable insertion rod can axially stretch out and draw back in the moving process; and the grinding shaft on the outer side can be driven to expand and deform, and self-adaption is conducted according to different gear models.

Description

Technical Field

[0001] The invention relates to the technical field of gear processing, in particular to an inter-tooth feeding polishing device for gears. Background Art

[0002] The main purpose of gear polishing is to improve the smoothness and precision of the gear surface, thereby improving the transmission efficiency of the gear, reducing noise, and extending the service life. The polished gear surface is smoother, which can reduce friction and wear and improve the overall performance of the gear.

[0003] Gear manufacturing uses mechanical methods to obtain specific structures and precision. The last step after gear processing is polishing. The gear needs to be finely polished to achieve the required precision. When the gear is polished, there is a tendency for some residues or unpolished parts to remain at the bottom of the meshing tooth gap. In addition, since the grinding head used for polishing the meshing teeth is small, debris will accumulate and the operator needs to clean and maintain it, otherwise it will affect the grinding quality and reduce the processing efficiency. For this reason, we propose a gear inter-tooth feed polishing equipment to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a gear inter-tooth feeding polishing device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a gear inter-tooth feeding polishing device, comprising a positioning seat, a limiting mechanism and a grinding mechanism arranged on the positioning seat, the positioning seat comprising a pair of support plates, the limiting mechanism being arranged on the bottom support plate, a rectangular groove being provided on the top support plate, the limiting mechanism penetrating the rectangular groove, the grinding mechanism being arranged on the top support plate, the limiting mechanism comprising a connecting base and a lifting plate, a pair of telescopic rods being installed on the connecting base, the lifting plate being installed on the top of the telescopic rod, and the limiting mechanism being used for limiting clamping;

[0006] The grinding mechanism includes a fixed frame, a control motor is installed at the rear end of the fixed frame, and a conveying shaft is installed on the output end of the control motor, a fixed end block is installed at one end of the conveying shaft, a hollow groove is provided on the fixed end block, reset plates are installed at both ends of the fixed end block, a fixed groove is provided on the reset plate, and a dust suction plate is installed inside the fixed groove for assisting dust reduction during the grinding process. When it is necessary to grind the gear, the gear can be clamped inside the limiting mechanism, can be positioned and clamped, and can be polished on the outer teeth in cooperation with the grinding mechanism. The external equipment can be connected to the dust suction plate, can recycle the dust and debris generated by grinding, and reduce the flying of dust during the processing.

[0007] Preferably, the limiting mechanism further comprises a clamping plate and a cylinder, the clamping plate is mounted on the top of the connecting base, a semicircular groove is provided at one end of the clamping plate, a slide groove is provided on the clamping plate, a transmission slider is movably clamped at the bottom of the slide groove, a rotating shaft is movably provided at the top of the transmission slider, a limiting ring is installed on the rotating shaft, a plurality of buffer rods are provided on the side wall of the limiting ring, and the buffer rods are used to be clamped on the inner wall of the gear;

[0008] An output shaft is installed on the top of the cylinder, and a transmission plate is installed on one end of the output shaft. A positioning pressure plate is installed on the bottom of the transmission plate. The positioning pressure plate is used to rest against the top of the gear to correct the deviation during the gear installation process, so that the gear is clamped horizontally to prevent and reduce the occurrence of clamping deviation.

[0009] Preferably, the positioning platen is provided with a pair of transmission grooves, and a transmission tube is movably clamped inside the transmission grooves, a limiting piece is clamped on the outer wall of the transmission tube, and the limiting piece abuts against the side wall of the positioning platen to play an auxiliary positioning role, and a pneumatic limiting shaft is inserted inside the transmission tube, the bottom of the pneumatic limiting shaft is elastic and abuts against the top of the gear, and a transmission tube is installed at one end of the pneumatic limiting shaft, and the transmission tube passes through the transmission tube;

[0010] A telescopic frame is installed on the limiting plate, and a clamping ring is installed at one end of the telescopic frame. An expansion tube is clamped inside the clamping ring. The transmission tube passes through the clamping ring and the expansion tube. The expansion tube can move axially under the action of air pressure. A plurality of cleaning sheets are provided on the outer wall of the bottom of the expansion tube. During the axial movement of the expansion tube, the cleaning sheets can be rubbed and squeezed with the outer tooth gap, so that dirt and impurities stuck in the outer tooth gap can be quickly cleaned, thereby playing a role of pretreatment.

[0011] Preferably, a rotating shaft is rotatably provided inside the fixed end block, the rotating shaft is located inside the hollow groove, a movable rod is inserted on the side wall of the rotating shaft, a reset air pressure tube is provided on the movable rod, and a fixed tube is installed at one end of the reset air pressure tube, a conical tube is installed at one end of the rotating shaft, one end of the fixed tube is inserted inside the conical tube, a compression rod is inserted inside the conical tube, one end of the compression rod can be against the gear gap, follow the movement of the rotating shaft, and can grind and polish the external tooth gap.

[0012] Preferably, the top of the compression rod is hemispherical, a conical protrusion is provided on the top of the compression rod, and a grinding sheet is provided on the surface of the conical protrusion, a circular groove is provided on the side wall of the conical tube, and an adsorption plate is inserted inside the circular groove, the cross section of the adsorption plate is "C"-shaped, a plurality of arc-shaped notches are provided on the edge of the adsorption plate, and a compression block is provided inside the arc-shaped notch;

[0013] A plurality of grinding shafts are installed on the side wall of the compression rod. The grinding shafts are elastic and are evenly arranged in an array on the edge of the hemisphere. One end of the grinding shaft is clamped on one side of the rotating shaft. The grinding shaft is movably arranged inside the adsorption plate. The grinding shaft can expand and deform outward under the action of the compression rod so that it can cooperate with gears of different models and can quickly grind the external tooth gap.

[0014] Preferably, a pair of card slots are opened inside the fixed end block, and compression tubes are inserted into the card slots, and the compression tubes are located on both sides of the hollow slot. A plurality of through slots are opened on the fixed end block, and the compression tubes can protrude from the through slots under the action of air pressure, and the positions of the through slots correspond to the positions of the reset plates. The compression tubes can drive the reset plates to deform under the action of air pressure, so as to reduce blockage inside the dust collection plate and facilitate dust collection during the grinding process.

[0015] Preferably, a connecting pipe is installed on the top of the dust suction plate, and the connecting pipe is connected to an external air pressure device. The dust suction plate is elastic and can follow the deformation of the reset plate. The external device can exhaust air during the grinding process to form a negative pressure at the bottom of the dust suction plate to quickly remove dust and debris.

[0016] Preferably, a plurality of separation racks are installed at the bottom of the dust collection plate, and the separation racks are arranged in a uniform array on one side of the dust collection plate. A plurality of adsorption shafts are provided on the separation racks, and the adsorption shafts and the separation racks are vertically staggered. The separation racks and the adsorption shafts can adsorb large particles of impurities in the transmission process, which is convenient for subsequent unified cleaning and maintenance.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention uses a movable plug rod to press against the gap of the outer wall of the gear, and the conical protrusion at the top can be stuck in the gap of the outer teeth to reduce the situation where there is no grinding at the dead angle. During the grinding process, the telescopic rod moves, and the movable plug rod can move in the gear gap. The movable plug rod will also have axial expansion and contraction during the movement process, which can drive the outer grinding shaft to expand and deform, and adapt to different gear models;

[0019] 2. The present invention can replace the limiting ring according to the gears with different inner diameters during the limiting process, can limit and clamp the gears, and can fit the positioning plate to the top of the gears in coordination with the operation of the cylinder to correct the deviation;

[0020] 3. The present invention uses a fixed end block to abut against one end of the clamping plate, so that the compression tube can be deformed under the extrusion effect, can pass through the through groove and the reset plate for extrusion, and can make the dust collecting plate expand and deform before grinding, thereby reducing the situation where the bottom of the dust collecting plate is clogged with dust;

[0021] 4. The present invention deforms the grinding shaft during grinding and polishing, and can squeeze and rub against the compression block inside the adsorption plate, so as to shake off the dust and debris adsorbed on the surface of the grinding shaft and guide them out along the airflow;

[0022] 5. The present invention enables the expansion tube to be stuck in the next gear gap through the circular rotation of the gear. In the process of pushing the air pressure limit shaft to reset, the expansion tube can cooperate with the internal air pressure change to move axially, and the outer tooth gap can be cleaned under the action of the cleaning sheet for pretreatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the limiting mechanism of the present invention;

[0025] Figure 3 This is a schematic diagram of the local structure of the positioning plate of the present invention;

[0026] Figure 4 For the present invention Figure 3 A partial enlarged schematic diagram in the middle;

[0027] Figure 5 It is a schematic diagram of the local structure of the conveying shaft of the present invention;

[0028] Figure 6 For the present invention Figure 5 A partial enlarged schematic diagram of point B in the middle;

[0029] Figure 7 It is a schematic diagram of the local structure of the rotating shaft of the present invention;

[0030] In the figure: 1. positioning seat; 2. limiting mechanism; 3. grinding mechanism; 4. reset plate; 21. connecting base; 22. lifting plate; 221. clamping plate; 23. cylinder; 24. transmission plate; 241. positioning pressure plate; 25. transmission slider; 26. rotating shaft; 261. limiting ring; 27. transmission pipe; 271. air pressure limiting shaft; 272. limiting plate; 273. transmission pipe; 28. telescopic frame; 281. clamping ring; 29. ​​expansion pipe; 31. fixed frame; 32. conveying shaft; 33. fixed end block; 331. hollow groove; 34. compression pipe; 35. rotating shaft; 36. movable plug rod; 361. fixed pipe; 37. tapered pipe; 371. adsorption plate; 38. compression plug rod; 381. grinding shaft; 41. dust suction plate; 42. separation frame; 43. adsorption shaft. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 7 The present invention provides a technical solution: a gear inter-tooth feeding polishing device, comprising a positioning seat 1, a limiting mechanism 2 and a grinding mechanism 3 arranged on the positioning seat 1, the positioning seat 1 comprises a pair of support plates, the limiting mechanism 2 is arranged on the bottom support plate, a rectangular groove is opened on the top support plate, the limiting mechanism 2 passes through the rectangular groove, the grinding mechanism 3 is arranged on the top support plate, the limiting mechanism 2 comprises a connecting base 21 and a lifting plate 22, a pair of telescopic rods are installed on the connecting base 21, the lifting plate 22 is installed on the top of the telescopic rod, and the limiting mechanism 2 is used for limiting clamping;

[0033] The grinding mechanism 3 includes a fixed frame 31, a control motor is installed at the rear end of the fixed frame 31, and a conveying shaft 32 is installed on the output end of the control motor, a fixed end block 33 is installed at one end of the conveying shaft 32, a hollow groove 331 is provided on the fixed end block 33, reset plates 4 are installed at both ends of the fixed end block 33, a fixed groove is provided on the reset plate 4, and a dust suction plate 41 is installed inside the fixed groove for assisting dust reduction during the grinding process. When it is necessary to grind the gear, the gear can be clamped inside the limiting mechanism 2, and can be positioned and clamped. The external teeth can be polished in cooperation with the grinding mechanism 3. The external equipment can be connected to the dust suction plate 41, and the dust and debris generated by grinding can be recycled to reduce the flying of dust during the processing.

[0034] like Figure 2 As shown, the gear is prone to tilt and offset during the clamping process. The limiting mechanism 2 also includes a clamping plate 221 and a cylinder 23. The clamping plate 221 is installed on the top of the connecting base 21. A semicircular groove is provided at one end of the clamping plate 221. The semicircular groove can correspond to the outer tooth gap that needs to be processed and is used for auxiliary positioning. A slide groove is provided on the clamping plate 221, and a transmission slider 25 is movably provided at the bottom of the slide groove. A rotating shaft 26 is movably provided at the top of the transmission slider 25. A limiting ring 261 is installed on the rotating shaft 26. A plurality of buffer rods are provided on the side wall of the limiting ring 261, and the buffer rods are used to be clamped on the inner wall of the gear. The gear can be positioned and clamped with the help of the buffer rods.

[0035] An output shaft is installed on the top of the cylinder 23, and a transmission plate 24 is installed at one end of the output shaft. A positioning pressure plate 241 is installed at the bottom of the transmission plate 24. The positioning pressure plate 241 is used to rest against the top of the gear. With the help of the positioning pressure plate 241, it can fit on the top of the gear, which can play a role in correcting the deviation and avoid unexpected situations in subsequent processing.

[0036] like Figure 3 and Figure 4 As shown, in order to reduce the indentation at both ends of the gear during the clamping process, a pair of transmission grooves are provided on the positioning plate 241, and a transmission tube 27 is movably provided inside the transmission grooves. A limiting piece 272 is provided on the outer wall of the transmission tube 27, and the limiting piece 272 abuts against the side wall of the positioning plate 241 to assist in positioning. A pneumatic limiting shaft 271 is inserted inside the transmission tube 27, and the bottom of the pneumatic limiting shaft 271 is elastic and abuts against the top of the gear. A transmission tube 273 is installed at one end of the pneumatic limiting shaft 271, and the transmission tube 273 runs through the transmission tube 27. The pneumatic limiting shaft 271 can abut against the top of the gear. While limiting, it can also reduce the indentation on the gear surface due to clamping, and the position where the gear needs to be polished can correspond to the semicircular groove.

[0037] A telescopic frame 28 is installed on the limiting plate 272, and a clamping ring 281 is installed at one end of the telescopic frame 28. An expansion tube 29 is clamped inside the clamping ring 281, and the transmission tube 273 passes through the clamping ring 281 and is connected with the expansion tube 29. The expansion tube 29 can move axially under the action of air pressure. A plurality of cleaning sheets are provided on the outer wall at the bottom of the expansion tube 29. When the internal air pressure of the expansion tube 29 changes during the limiting process of the air pressure limiting shaft 271, the cleaning sheets can be used to quickly clean and grind the outer tooth gap, and the excess internal debris can be discharged to reduce its impact on subsequent grinding.

[0038] like Figure 5 As shown, a rotating shaft 35 is rotatably provided inside the fixed end block 33, and the rotating shaft 35 is located inside the hollow groove 331. A movable plug rod 36 is inserted on the side wall of the rotating shaft 35, and a reset air pressure tube is provided on the movable plug rod 36, and a fixed tube 361 is installed at one end of the reset air pressure tube, and a conical tube 37 is installed at one end of the rotating shaft 35, and one end of the fixed tube 361 is inserted inside the conical tube 37, and a compression plug rod 38 is inserted inside the conical tube 37. The hollow groove 331 and the reset plate 4 can play a blocking role under the cooperation of the hollow groove 331 and the reset plate 4, thereby reducing the overflow of dust along the gap during the subsequent grinding process, and facilitating the subsequent dust collection process.

[0039] like Figure 7As shown, the external teeth are prone to partial omission during the grinding process, which affects the processing quality of the equipment. The top of the compression rod 38 is hemispherical, and a conical protrusion is provided on the top of the compression rod 38, and a grinding sheet is provided on the surface of the conical protrusion. A circular groove is provided on the side wall of the conical tube 37, and an adsorption plate 371 is inserted inside the circular groove. The cross section of the adsorption plate 371 is "C" shaped, and a plurality of arc-shaped notches are provided on the edge of the adsorption plate 371, and a compression block is provided inside the arc-shaped notch.

[0040] A plurality of grinding shafts 381 are installed on the side wall of the compression rod 38. The grinding shafts 381 are elastic and are evenly arranged in an array on the hemispherical edge. One end of the grinding shaft 381 is clamped on one side of the rotating shaft 35. The grinding shaft 381 is movably arranged inside the adsorption plate 371. During the grinding process, the movable rod 36 can be pressed against the gap of the outer wall of the gear, and the conical protrusion at the top can be clamped in the gap of the outer teeth to reduce the situation where there are dead corners that have not been polished.

[0041] like Figure 5 As shown, in order to reduce the clogging inside the dust collecting plate 41, a pair of card slots are opened inside the fixed end block 33, and a compression tube 34 is inserted into the card slot, and the compression tube 34 is located on both sides of the hollow slot 331. A plurality of through slots are opened on the fixed end block 33, and the compression tube 34 can protrude from the through slot under the action of air pressure, and the position of the through slot corresponds to the position of the reset plate 4. The fixed end block 33 is against one end of the clamping plate 221, and the compression tube 34 can be deformed under the action of extrusion, and can pass through the through slot and the reset plate 4 and be squeezed, so that the dust collecting plate 41 can be expanded and deformed before grinding, thereby reducing the clogging of dust at the bottom of the dust collecting plate 41, facilitating the subsequent dust collection process, and ensuring the cleanliness of the processing environment.

[0042] like Figure 5 As shown, a connecting pipe is installed on the top of the dust collecting plate 41, and the connecting pipe is connected to the external air pressure equipment. The dust collecting plate 41 is elastic and can follow the deformation of the reset plate 4, which can reduce the situation where internal blockage affects the dust collection efficiency.

[0043] like Figure 6 As shown, impurities such as debris and other particles that are larger than the gap between the dust collecting plates 41 are likely to appear during the dust collecting process. A plurality of separation racks 42 are installed at the bottom of the dust collecting plates 41. The separation racks 42 are arranged in a uniform array on one side of the dust collecting plates 41. A plurality of adsorption shafts 43 are provided on the separation racks 42. The adsorption shafts 43 and the separation racks 42 are vertically staggered. The adsorption shafts 43 can be used to adsorb large particles of impurities in the dust, which is convenient for subsequent unified cleaning and maintenance.

[0044] Working principle: first, when the gear needs to be polished, the gear can be clamped inside the limiting mechanism 2, and it can be positioned and clamped. In cooperation with the polishing mechanism 3, the external teeth can be polished. The external equipment can be connected to the dust collecting plate 41, and the dust and debris generated by the polishing can be recycled to reduce the flying of dust during the processing. In the limiting process, the limiting ring 261 can be replaced according to the gears with different inner diameters, and the gear can be limited and clamped. In cooperation with the operation of the cylinder 23, the positioning plate 241 can be attached to the top of the gear to play a role in correcting the deviation and reduce the gear offset during the clamping process. The pneumatic limiting shaft 271 can be against the top of the gear. While limiting the position, it can also reduce the indentation on the gear surface due to clamping, and the position where the gear needs to be polished can correspond to the semicircular groove.

[0045] Then, during the grinding process, the fixed end block 33 can be pressed against one end of the clamping plate 221, the compression tube 34 can be deformed under the extrusion, and can pass through the through groove and the reset plate 4 for extrusion, so that the dust collecting plate 41 can be expanded and deformed before the grinding process, thereby reducing the clogging of dust at the bottom of the dust collecting plate 41, facilitating the subsequent dust collection process, and ensuring the cleanliness of the processing environment. In addition, during the grinding process, the movable plug rod 36 can be pressed against the gap of the outer wall of the gear, and the conical protrusion at the top can be stuck in the gap of the outer teeth to reduce the dead angle. There is a situation where grinding has not been done yet, and as the grinding process progresses, the telescopic rod moves, and the movable plug rod 36 can move in the gear gap. The movable plug rod 36 will also expand and contract axially during the activity, which can drive the outer grinding shaft 381 to expand and deform, and adapt to different gear models, so that the inside of the gap can be ground. In the grinding process, the grinding shaft 381 is deformed, and can be squeezed and rubbed with the compression block inside the adsorption plate 371, so that the dust and debris adsorbed on the surface of the grinding shaft 381 can be shaken off and discharged along the airflow;

[0046] Finally, when the gear follows the circular motion of the rotating shaft 26, the air pressure limit shaft 271 can be moved upward, and the expansion tube 29 can be stuck in the next gear gap. In the process of pushing the air pressure limit shaft 271 to reset, it can cooperate with the internal air pressure change, and the expansion tube 29 can move axially. Under the action of the cleaning sheet, the outer tooth gap is cleaned for pretreatment to reduce the residual debris.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gear inter-tooth feeding polishing device, comprising a positioning seat (1), a limiting mechanism (2) and a polishing mechanism (3) arranged on the positioning seat (1), characterized in that: The positioning seat (1) comprises a pair of support plates, the limiting mechanism (2) is arranged on the bottom support plate, a rectangular groove is opened on the top support plate, the limiting mechanism (2) passes through the rectangular groove, the grinding mechanism (3) is arranged on the top support plate, the limiting mechanism (2) comprises a connecting base (21) and a lifting plate (22), a pair of telescopic rods are installed on the connecting base (21), the lifting plate (22) is installed on the top of the telescopic rod, and the limiting mechanism (2) is used for limiting clamping; The grinding mechanism (3) comprises a fixed frame (31), a control motor is mounted on the rear end of the fixed frame (31), a conveying shaft (32) is mounted on the output end of the control motor, a fixed end block (33) is mounted on one end of the conveying shaft (32), a hollow groove (331) is formed on the fixed end block (33), reset plates (4) are mounted on both ends of the fixed end block (33), a fixed groove is formed on the reset plate (4), and a dust collecting plate (41) is mounted inside the fixed groove for assisting dust reduction during the grinding process.

2. The inter-tooth feeding polishing device for gears according to claim 1, characterized in that: The limiting mechanism (2) further comprises a clamping plate (221) and a cylinder (23), wherein the clamping plate (221) is mounted on the top of the connecting base (21), a semicircular groove is formed at one end of the clamping plate (221), a sliding groove is formed on the clamping plate (221), a transmission slider (25) is movably clamped at the bottom of the sliding groove, a rotating shaft (26) is movably provided at the top of the transmission slider (25), a limiting ring (261) is mounted on the rotating shaft (26), a plurality of buffering rods are formed on the side wall of the limiting ring (261), and the buffering rods are used to be clamped on the inner wall of the gear; An output shaft is mounted on the top of the cylinder (23), and a transmission plate (24) is mounted on one end of the output shaft. A positioning pressure plate (241) is mounted on the bottom of the transmission plate (24), and the positioning pressure plate (241) is used to abut against the top of the gear.

3. The inter-tooth feeding polishing device for gears according to claim 2, characterized in that: A pair of transmission grooves are provided on the positioning plate (241), and a transmission tube (27) is movably clamped inside the transmission grooves. A limiting plate (272) is clamped on the outer wall of the transmission tube (27), and the limiting plate (272) abuts against the side wall of the positioning plate (241) to play an auxiliary positioning role. A pneumatic limiting shaft (271) is inserted into the transmission tube (27), and the bottom of the pneumatic limiting shaft (271) is elastic and abuts against the top of the gear. A transmission tube (273) is installed at one end of the pneumatic limiting shaft (271), and the transmission tube (273) passes through the transmission tube (27); A telescopic frame (28) is mounted on the limiting piece (272), a clamping ring (281) is mounted on one end of the telescopic frame (28), an expansion tube (29) is clamped inside the clamping ring (281), the transmission tube (273) passes through the clamping ring (281) and is connected to the expansion tube (29), the expansion tube (29) is capable of axial movement under the action of air pressure, and a plurality of cleaning sheets are provided on the outer wall of the bottom of the expansion tube (29).

4. The inter-tooth feeding polishing device for gears according to claim 1, characterized in that: A rotating shaft (35) is rotatably provided inside the fixed end block (33), the rotating shaft (35) is located inside the hollow groove (331), a movable plug rod (36) is inserted on the side wall of the rotating shaft (35), a reset air pressure tube is provided on the movable plug rod (36), and a fixed tube (361) is installed at one end of the reset air pressure tube, a conical tube (37) is installed at one end of the rotating shaft (35), one end of the fixed tube (361) is inserted inside the conical tube (37), and a compression plug rod (38) is inserted inside the conical tube (37).

5. The inter-tooth feeding polishing device for gears according to claim 4, characterized in that: The top end of the compression rod (38) is hemispherical, the top end of the compression rod (38) is provided with a conical protrusion, and the surface of the conical protrusion is provided with a grinding sheet, the side wall of the conical tube (37) is provided with a circular groove, and an adsorption plate (371) is inserted into the circular groove, the cross section of the adsorption plate (371) is "C"-shaped, the edge of the adsorption plate (371) is provided with a plurality of arc-shaped notches, and a compression block is provided inside the arc-shaped notch; A plurality of grinding shafts (381) are mounted on the side wall of the compression rod (38); the grinding shafts (381) are elastic and are evenly arranged in an array on the edge of a hemispherical shape; one end of the grinding shaft (381) is clamped on one side of the rotating shaft (35); and the grinding shaft (381) is movably arranged inside the adsorption plate (371).

6. The inter-tooth feeding polishing device for gears according to claim 4, characterized in that: A pair of slots are provided inside the fixed end block (33), and compression tubes (34) are inserted into the slots. The compression tubes (34) are located on both sides of the hollow slot (331). A plurality of through slots are provided on the fixed end block (33). The compression tubes (34) can protrude from the through slots under the action of air pressure, and the positions of the through slots correspond to the positions of the reset plate (4).

7. The inter-tooth feeding polishing device for gears according to claim 1, characterized in that: A connecting pipe is installed at the top of the dust collecting plate (41), and the connecting pipe is connected to an external air pressure device. The dust collecting plate (41) has elasticity and can follow the deformation of the reset plate (4).

8. The inter-tooth feeding polishing device for gears according to claim 7, characterized in that: A plurality of separation racks (42) are installed at the bottom of the dust collecting plate (41); the separation racks (42) are arranged in a uniform array on one side of the dust collecting plate (41); a plurality of adsorption shafts (43) are clamped on the separation racks (42); the adsorption shafts (43) and the separation racks (42) are arranged in a vertically staggered manner.

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