Gear inner hole positioning polishing machine for assembly

Abstract

The invention discloses an assembling gear inner hole positioning polishing machine which comprises a machining table, a transmission mechanism, a clamping mechanism, an auxiliary positioning mechanism and a polishing mechanism. A fixing base plate is installed at the top of the machining table, and the transmission mechanism is arranged at the top of the fixing base plate and used for assisting conveying and positioning in the gear polishing process. The auxiliary positioning mechanism is movably arranged at the top of the fixed base plate and located on one side of the transmission mechanism, and the grinding frame is installed on one side of the auxiliary positioning mechanism; compared with the prior art, in the clamping process of the gear ring, the position of the positioning pressing plate on the auxiliary correction plate can be adjusted according to the outer diameter of the gear ring, so that the positioning pressing plate can abut against one side of the gear ring and is used for auxiliary positioning, the deviation situation in the clamping process is reduced, the positioning ring and the clamping mechanism can conduct auxiliary positioning calibration, and the positioning accuracy is improved. And the deviation condition is reduced, and the machining quality of equipment is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing equipment, in particular to a positioning and polishing machine for inner hole of a gear for assembly. Background Art

[0002] With the continuous development of the manufacturing industry and the widespread application of major equipment, large-scale mechanical equipment has gradually emerged. Gears, as the main components of mechanical transmission, have also been widely used in large-scale equipment.

[0003] During the gear manufacturing process, the surface and inner wall of the gear will be rough after rough machining, and burrs may also exist. At this time, the gear needs to be ground and polished.

[0004] In the existing gear polishing process, installation is required before processing. The installation and positioning progress of traditional processing equipment is slow, and the gears are prone to offset, which not only leads to poor inner wall grinding effect, but also easily causes serious eccentric operation of the gears after installation, affecting product quality. In the polishing process, the debris generated is easy to adhere to the inner wall of the gear and needs to be cleaned later. For this reason, we propose an assembly gear inner hole positioning polishing machine to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a positioning and polishing machine for the inner hole of a gear for assembly, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a positioning and polishing machine for inner hole of a gear for assembly, comprising:

[0007] Processing table;

[0008] Transmission mechanism, a fixed pad is installed on the top of the processing table, and the transmission mechanism is arranged on the top of the fixed pad, and the transmission mechanism is used for auxiliary conveying and positioning during the gear polishing process;

[0009] A clamping mechanism, which is arranged on one side of the transmission mechanism and is used for clamping and correcting the gears;

[0010] An auxiliary positioning mechanism, the auxiliary positioning mechanism is movably arranged on the top of the fixed pad, the auxiliary positioning mechanism is located on one side of the transmission mechanism, and the auxiliary positioning mechanism is used for limiting the position when polishing the gear;

[0011] A grinding frame is installed on one side of the auxiliary positioning mechanism. When the equipment needs to be used to polish the inner ring of the gear, the gear ring can be quickly positioned and calibrated under the action of the clamping mechanism and the auxiliary positioning mechanism. The inner wall of the gear ring can be quickly polished in conjunction with the polishing shaft on the grinding frame to reduce burrs and surface roughness.

[0012] Preferably, the transmission mechanism includes a welding plate, a fixing frame, a hollow tube and a threaded rod, the welding plate is fixedly connected to the top of the fixing pad, the fixing frame is installed on the top of the welding plate, the fixing frame is bent, a docking plate is installed on the inner wall of the fixing frame, the hollow tube is installed on the inner wall of the docking plate, the hollow tube is arranged parallel to the bottom fixed pad, the threaded rod is rotatably arranged inside the hollow tube, a plurality of straight grooves are opened on the surface of the hollow tube, and the straight grooves are arranged in a uniform array on the outer wall of the hollow tube.

[0013] Preferably, a plurality of buffer shafts are installed on the surface of the hollow tube, one end of the buffer shaft is "U"-shaped, the buffer shaft is staggered with the straight groove, an arc groove is opened on the buffer shaft, and a reset pressure plate is provided inside the arc groove, the reset pressure plate is installed on the surface of the hollow tube, and cleaning shafts are provided at both ends of the reset pressure plate, the length of the cleaning shaft can be adjusted and passes through the buffer shaft.

[0014] Preferably, the clamping mechanism includes a clamping ring and an auxiliary correction plate, a plurality of conical plates are provided on the inner wall of the clamping ring, and docking teeth are provided at the bottom end of the conical plate, the clamping ring is movably arranged on the transmission mechanism, and the position of the conical plate corresponds to the straight groove, the auxiliary correction plate is installed on one side of the clamping ring, and a plurality of positioning pressure plates are movably arranged on the auxiliary correction plate, a storage tube is installed at one end of the auxiliary correction plate, an adsorption shaft is inserted into the inside of the storage tube, and an elastic air inlet is provided at one end of the adsorption shaft.

[0015] Preferably, an annular groove is provided on the surface of the clamping ring, and a plurality of clamping blocks are provided inside the annular groove, a gas pressure plate is provided on the top of the clamping block, a plurality of movable plug plates are provided on the surface of the clamping ring, a transmission channel is provided inside the clamping ring for conveying gas to the inside of the gas pressure plate on the top of the clamping block, a through groove is provided inside the movable plug plate, and the through groove is connected with the transmission channel;

[0016] A flow-guiding pressure pipe is inserted inside the movable plug plate, and the flow-guiding pressure pipe is movably inserted inside the through groove to play a blocking role. A ventilation groove is clamped inside the flow-guiding pressure pipe.

[0017] Preferably, the auxiliary positioning mechanism includes a transmission plate and a positioning frame, the transmission plate is movably arranged on the top of the fixed pad, the positioning frame is installed on the transmission plate, and a pair of limit plugs are inserted on the inner wall of the positioning frame, and the limit plugs are used to limit and clamp the outer side of the gear ring.

[0018] Preferably, a clamping plate is installed on the limit plug plate, one end of the clamping plate is a parallel straight rod, and a plurality of positioning wheels are rotatably provided on the straight rod, and the positioning wheels are eccentrically arranged to abut against the outer tooth gap of the gear ring.

[0019] Preferably, a fixed shaft is installed on the grinding frame, and a positioning ring is installed on the positioning shaft, an annular groove is provided on the outer wall of the positioning ring, and a movable ring is rotatably provided inside the annular groove, an air inlet groove is provided on the positioning ring, a guide plate is provided on the inner wall of the movable ring and clamping rings are installed at both ends, and the clamping ring is installed inside the annular groove, the movable ring is rotatably provided between the clamping rings, the movable ring can rotate under the action of airflow, a plurality of polishing shafts are inserted on the surface of the movable ring, dust collecting plates are installed between the polishing shafts, the dust collecting plates are arc-shaped, the dust collecting plates are arc-shaped and a plurality of elastic tubes are provided on the surface, a plurality of rubber rings are installed on the surface of the elastic tube, a compression tube is installed at the bottom of the dust collecting plate, the bottom of the compression tube passes through the top of the movable ring, and the compression tube can be retracted and retracted under the action of air pressure.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the process of clamping the gear ring, the present invention can adjust the position of the positioning plate on the auxiliary correction plate according to its outer diameter, so that it can be against one side of the gear ring for auxiliary positioning, reducing the offset during the clamping process. The positioning ring can be calibrated with the clamping mechanism for auxiliary positioning, reducing the offset and ensuring the processing quality of the equipment;

[0022] 2. The present invention can push the gear ring to move between the auxiliary positioning mechanisms through the adsorption shaft, and can ensure that the clamping mechanism and the grinding frame are concentrically arranged during the conveying process, thereby reducing the deviation of the gear during the clamping process;

[0023] 3. During the positioning process, the present invention can make the clamping plate clamped in the gear gap, and can make the positioning wheel rotate and abut against the gear gap, thereby ensuring the stability of the clamping and avoiding the situation that the insufficient holding force during the polishing process causes the deviation or the inconsistent polishing smoothness;

[0024] 4. During the polishing process, the airflow can enter the gap between the positioning ring and the movable ring along the guide pressure pipe, so that the movable ring can rotate. The inner wall of the gear ring can be quickly polished by means of the polishing shaft. The height position of the polishing shaft can be adjusted, and it can be applied to various types of gear rings.

[0025] 5. The dust collecting plate of the present invention can be deformed under the action of the change of air pressure inside the compression tube, so that the distance between the dust collecting plate and the inner wall of the gear is close, and the debris generated by grinding can be accumulated and stuck on the dust collecting plate, which is convenient for subsequent cleaning and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the transmission mechanism structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the local structure of the hollow tube of the present invention;

[0029] Figure 4 For the present invention Figure 2 A partial enlarged schematic diagram in the middle;

[0030] Figure 5 This is a schematic diagram of the auxiliary positioning mechanism structure of the present invention;

[0031] Figure 6 For the present invention Figure 5 A partial enlarged schematic diagram of point B in the middle;

[0032] Figure 7 It is a schematic diagram of the local structure of the grinding frame of the present invention;

[0033] Figure 8 For the present invention Figure 7 A partial enlarged schematic diagram of point C in the middle;

[0034] In the figure: 1. processing table; 2. transmission mechanism; 3. clamping mechanism; 4. auxiliary positioning mechanism; 5. grinding frame; 11. fixed pad; 21. welding plate; 22. fixed frame; 23. docking plate; 24. hollow tube; 25. buffer shaft; 251. reset pressure plate; 26. threaded rod; 27. cleaning shaft; 31. clamping ring; 32. movable plug plate; 33. guide pressure pipe; 34. clamping block; 35. auxiliary correction plate; 36. storage tube; 361. adsorption shaft; 41. transmission plate; 42. positioning frame; 43. limit plug plate; 44. clamping plate; 45. positioning wheel; 51. positioning ring; 511. air inlet groove; 52. movable ring; 53. polishing shaft; 54. dust collecting plate; 55. elastic tube; 56. compression tube. DETAILED DESCRIPTION

[0035] 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.

[0036] See also Figure 1-Figure 8 The present invention provides a technical solution: a positioning and polishing machine for inner hole of a gear for assembly, comprising:

[0037] Processing table 1;

[0038] Transmission mechanism 2, a fixed pad 11 is installed on the top of the processing table 1, and the transmission mechanism 2 is arranged on the top of the fixed pad 11. The transmission mechanism 2 is used for auxiliary conveying and positioning during the gear polishing process;

[0039] The clamping mechanism 3 is arranged on one side of the transmission mechanism 2 and is used for clamping and correcting the gears;

[0040] Auxiliary positioning mechanism 4, the auxiliary positioning mechanism 4 is movably arranged on the top of the fixed pad 11, the auxiliary positioning mechanism 4 is located on one side of the transmission mechanism 2, and the auxiliary positioning mechanism 4 is used for limiting the position when the gear is polished;

[0041] The grinding frame 5 is installed on one side of the auxiliary positioning mechanism 4. When the equipment needs to be used to polish the inner ring of the gear, the gear ring can be quickly positioned and calibrated under the action of the clamping mechanism 3 and the auxiliary positioning mechanism 4. The polishing shaft 53 on the grinding frame 5 can quickly grind the inner wall of the gear ring to reduce burrs and surface roughness.

[0042] like Figure 2 As shown, in order to reduce the deviation caused by manual positioning of the operator, the transmission mechanism 2 includes a welding plate 21, a fixing frame 22, a hollow tube 24 and a threaded rod 26. The welding plate 21 is fixedly connected to the top of the fixed pad 11, and the fixing frame 22 is installed on the top of the welding plate 21. The fixing frame 22 is bent, and a docking plate 23 is installed on the inner wall of the fixing frame 22. The hollow tube 24 is installed on the inner wall of the docking plate 23. The hollow tube 24 is arranged parallel to the bottom fixed pad 11, and the threaded rod 26 is rotatably arranged inside the hollow tube 24. A plurality of straight grooves are opened on the surface of the hollow tube 24, and the straight grooves are arranged in a uniform array on the outer wall of the hollow tube 24. The transmission mechanism 2 can drive the clamping mechanism 3 to move left and right, which is convenient for the operator to manually load materials, and the clamping mechanism 3 can be adjusted according to different types of gear rings, while ensuring the clamping accuracy, it also has good applicability.

[0043] like Figure 3 As shown, in order to reduce the risk of debris entering the transmission mechanism 2 and causing subsequent transmission jams, a plurality of buffer shafts 25 are installed on the surface of the hollow tube 24. One end of the buffer shaft 25 is in a "U" shape, and the position of the buffer shaft 25 is staggered with the straight groove. An arc groove is opened on the buffer shaft 25, and a reset pressure plate 251 is provided inside the arc groove. The reset pressure plate 251 is installed on the surface of the hollow tube 24, and cleaning shafts 27 are provided at both ends of the reset pressure plate 251. The length of the cleaning shaft 27 can be adjusted and passes through the buffer shaft 25. During the clamping process, when loading and unloading the gear ring, the cleaning shaft 27 can be abutted against the inner wall of the gear ring. As the loading and unloading process progresses, the inner wall is quickly cleaned to reduce the residue of debris and the jamming caused by grinding in the gap at the active position of the clamping mechanism 3, thereby ensuring the subsequent smooth operation of the equipment.

[0044] like Figure 4As shown, in order to ensure clamping, the clamping mechanism 3 includes a clamping ring 31 and an auxiliary correction plate 35. A plurality of conical plates are provided on the inner wall of the clamping ring 31, and a docking tooth is provided at the bottom end of the conical plate. The clamping ring 31 is movably arranged on the transmission mechanism 2, and the position of the conical plate corresponds to the straight groove. The auxiliary correction plate 35 is installed on one side of the clamping ring 31. A plurality of positioning pressure plates are movably clamped on the auxiliary correction plate 35. A storage tube 36 is installed at one end of the auxiliary correction plate 35. An adsorption shaft 361 is inserted inside the storage tube 36. An elastic air inlet is provided at one end of the adsorption shaft 361. One end of the adsorption shaft 361 can be fitted on one side of the gear ring, and the air pressure is used to play a positioning role. At the same time, under the action of the auxiliary correction plate 35, the gear ring can be fitted on the positioning pressure plate to play an auxiliary support role to prevent tilting and offsetting during the clamping process. It can also play an auxiliary positioning role to prevent the operator from offsetting during the feeding process.

[0045] In order to ensure the stability of clamping, an annular groove is provided on the surface of the clamping ring 31, and a plurality of clamping blocks 34 are provided inside the annular groove, a gas pressure plate is provided on the top of the clamping block 34, a plurality of movable plug plates 32 are provided on the surface of the clamping ring 31, and a transmission channel is provided inside the clamping ring 31 for conveying gas to the inside of the gas pressure plate on the top of the clamping block 34, and a through groove is provided inside the movable plug plate 32, and the through groove is connected with the transmission channel;

[0046] A flow-guiding pressure pipe 33 is inserted inside the movable plug plate 32. The flow-guiding pressure pipe 33 is movably inserted inside the through groove to play a blocking role. A ventilation groove is provided inside the flow-guiding pressure pipe 33 to transport gas from external equipment to the inside of the transmission pipeline. Under the action of air pressure, the air pressure plate can be pressed against the inner wall of the gear ring for clamping and limiting, and will not cause friction and scratches on the inner wall of the gear, thereby ensuring the processing quality of the equipment.

[0047] like Figure 5 As shown, in order to ensure the stability of the clamping and limiting of the polished gear ring, the auxiliary positioning mechanism 4 includes a transmission plate 41 and a positioning frame 42. The transmission plate 41 is movably arranged on the top of the fixed pad 11, and the positioning frame 42 is installed on the transmission plate 41. A pair of limiting plug plates 43 are inserted on the inner wall of the positioning frame 42. The limiting plug plates 43 are used to limit and clamp the outer side of the gear ring. The adsorption shaft 361 can be attached to one side of the gear ring under the action of air pressure for auxiliary positioning, and the limiting plug plates 43 can be against both ends of the gear ring for auxiliary limiting, thereby reducing the tilt and deviation during the polishing process and ensuring the uniform smoothness of the internal grinding.

[0048] like Figure 6As shown, in order to avoid instability in the clamping limit process caused by inconsistent gear clearance models, a clamping plate 44 is installed on the limit plug plate 43. One end of the clamping plate 44 is a straight rod set in parallel, and a plurality of positioning wheels 45 are rotatably provided on the straight rod. The positioning wheel 45 is eccentrically set and is used to rest in the gap between the outer teeth of the gear ring. After rotation, the positioning wheel 45 can fit between the gaps between the outer teeth of the gear and can perform auxiliary positioning within the range of movement of the positioning wheel 45. It can be applicable to a variety of different models of gear rings to ensure processing stability.

[0049] like Figure 7 and Figure 8 As shown, in order to reduce the flying of debris during the grinding process, a fixed shaft is installed on the grinding frame 5, and a positioning ring 51 is installed on the positioning shaft, an annular groove is provided on the outer wall of the positioning ring 51, and a movable ring 52 is rotatably provided inside the annular groove, an air inlet groove 511 is provided on the positioning ring 51, a guide plate is provided on the inner wall of the movable ring 52, and clamping rings are installed at both ends, and the clamping ring is installed inside the annular groove, and the movable ring 52 is rotatably provided between the clamping rings, and the movable ring 52 can rotate under the action of airflow, and a plurality of polishing shafts 53 are inserted on the surface of the movable ring 52, and dust collecting plates 54 are installed between the polishing shafts 53, and the dust collecting plates 54 are arc-shaped, and the dust collecting plates 54 are arc-shaped and have a plurality of elastic tubes 55 on the surface, and a plurality of rubber rings are installed on the surface of the elastic tube 55, and a compression tube 56 is installed at the bottom of the dust collecting plate 54, and the compression tube The bottom of 56 passes through the top of the movable ring 52, and the compression tube 56 can be extended and retracted under the action of air pressure. The airflow can enter the gap between the positioning ring 51 and the movable ring 52 along the guide pressure tube 33, so that the movable ring 52 can rotate, and the inner wall of the gear ring can be quickly polished and grinded with the help of the polishing shaft 53. The dust collecting plate 54 can be deformed under the action of the change of air pressure inside the compression tube 56, so that the distance between it and the inner wall of the gear is close, and the debris generated by grinding can be accumulated and stuck on the dust collecting plate 54. A certain amount of lubricating oil can be sprayed on the dust collecting plate 54, so that the debris generated by grinding can be quickly adsorbed on its surface, and when the dust collecting plate 54 follows the movement of the compression tube 56, the rubber rings on the surface of the elastic tube 55 can be squeezed against each other, so that the debris is stuck in its gap, which is convenient for subsequent unified cleaning and maintenance.

[0050] Working principle: First, when the equipment is needed to polish the inner ring of the gear, the gear ring can be quickly positioned and calibrated under the action of the clamping mechanism 3 and the auxiliary positioning mechanism 4, and the inner wall of the gear ring can be quickly polished with the polishing shaft 53 on the polishing frame 5 to reduce burrs and surface roughness, and the positioning ring 51 can be assisted in positioning and calibrating with the clamping mechanism 3 to reduce the occurrence of offset and ensure the processing quality of the equipment, and can be reset under the action of the transmission mechanism 2 after polishing is completed, which is convenient for operators to unload and load materials, and in the process of clamping the gear ring, the position of the positioning pressure plate on the auxiliary correction plate 35 can be adjusted according to its outer diameter so that it can be against one side of the gear ring for auxiliary positioning, reducing the occurrence of offset during the clamping process, and when polishing is required, the threaded rod 26 can be rotated to drive the clamping mechanism 3 to move;

[0051] Then, during the activity of the clamping ring 31, the flow guide pressure tube 33 can be clamped inside the air inlet groove 511, and the air pressure inside the air pressure plate on the top of the clamping block 34 can be changed. At the same time, the adsorption shaft 361 can push the gear ring to move between the auxiliary positioning mechanisms 4, and during the transportation process, the clamping mechanism 3 and the grinding frame 5 can be concentrically arranged to reduce the deviation of the gear during the clamping process. In addition, during the positioning process, the clamping plate 44 can be clamped in the gear gap, and the positioning wheel 45 can be rotated to abut against the gear gap, thereby ensuring the stability of the clamping and avoiding the deviation caused by insufficient holding force during the polishing process or inconsistent polishing smoothness.

[0052] Finally, during the grinding process, the airflow can enter the gap between the positioning ring 51 and the movable ring 52 along the guide pressure tube 33, causing the movable ring 52 to rotate, and the inner wall of the gear ring can be quickly polished with the help of the polishing shaft 53. The dust collecting plate 54 can be deformed under the action of the change in air pressure inside the compression tube 56, so that the distance between it and the inner wall of the gear is close, and the debris generated by grinding can be accumulated and stuck on the dust collecting plate 54, which is convenient for subsequent cleaning and maintenance.

[0053] 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 positioning and polishing machine for inner hole of a gear for assembly, characterized in that: include, Processing table (1); A transmission mechanism (2), wherein a fixed pad (11) is installed on the top of the processing table (1), and the transmission mechanism (2) is arranged on the top of the fixed pad (11), and the transmission mechanism (2) is used for assisting conveying and positioning during the gear polishing process; A clamping mechanism (3), the clamping mechanism (3) being arranged on one side of the transmission mechanism (2), and the clamping mechanism (3) being used for clamping and correcting the gear; An auxiliary positioning mechanism (4), the auxiliary positioning mechanism (4) being movably arranged on the top of the fixed pad (11), the auxiliary positioning mechanism (4) being located on one side of the transmission mechanism (2), and the auxiliary positioning mechanism (4) being used for limiting the position when polishing the gear; A grinding frame (5), wherein the grinding frame (5) is installed on one side of the auxiliary positioning mechanism (4).

2. The inner hole positioning and polishing machine for assembling gear according to claim 1, characterized in that: The transmission mechanism (2) comprises a welding plate (21), a fixing frame (22), a hollow tube (24) and a threaded rod (26); the welding plate (21) is fixedly connected to the top of the fixing pad (11); the fixing frame (22) is mounted on the top of the welding plate (21); the fixing frame (22) is bent; a docking plate (23) is mounted on the inner wall of the fixing frame (22); the hollow tube (24) is mounted on the inner wall of the docking plate (23); the hollow tube (24) is arranged parallel to the bottom fixing pad (11); the threaded rod (26) is rotatably arranged inside the hollow tube (24); a plurality of straight grooves are opened on the surface of the hollow tube (24); and the straight grooves are arranged in a uniform array on the outer wall of the hollow tube (24).

3. The inner hole positioning and polishing machine for assembling gear according to claim 2, characterized in that: A plurality of buffer shafts (25) are mounted on the surface of the hollow tube (24), one end of the buffer shaft (25) is in a "U" shape, the buffer shaft (25) is arranged alternately with the straight groove, an arc groove is provided on the buffer shaft (25), and a reset plate (251) is provided inside the arc groove, the reset plate (251) is mounted on the surface of the hollow tube (24), and cleaning shafts (27) are provided at both ends of the reset plate (251), the length of the cleaning shaft (27) is adjustable and passes through the buffer shaft (25).

4. The inner hole positioning and polishing machine for assembling gears according to claim 2, characterized in that: The clamping mechanism (3) comprises a clamping ring (31) and an auxiliary correction plate (35); a plurality of conical plates are provided on the inner wall of the clamping ring (31), and a butt-jointing tooth is provided at the bottom end of the conical plate; the clamping ring (31) is movably arranged on the transmission mechanism (2), and the position of the conical plate corresponds to the straight groove; the auxiliary correction plate (35) is mounted on one side of the clamping ring (31); a plurality of positioning pressure plates are movably arranged on the auxiliary correction plate (35); a storage tube (36) is installed at one end of the auxiliary correction plate (35); an adsorption shaft (361) is inserted into the interior of the storage tube (36); and an elastic air inlet is provided at one end of the adsorption shaft (361).

5. The inner hole positioning and polishing machine for assembling gears according to claim 4, characterized in that: An annular groove is provided on the surface of the clamping ring (31), and a plurality of clamping blocks (34) are provided inside the annular groove. A gas pressure plate is provided on the top of the clamping block (34). A plurality of movable plug plates (32) are provided on the surface of the clamping ring (31). A transmission channel is provided inside the clamping ring (31) for conveying gas to the inside of the gas pressure plate on the top of the clamping block (34). A through groove is provided inside the movable plug plate (32), and the through groove is connected to the transmission channel. A flow-guiding pressure pipe (33) is inserted inside the movable plug plate (32), and the flow-guiding pressure pipe (33) is movably inserted inside the through groove and can play a blocking role. A ventilation groove is clamped inside the flow-guiding pressure pipe (33).

6. The assembly gear inner hole positioning polishing machine according to claim 1, characterized in that: The auxiliary positioning mechanism (4) comprises a transmission plate (41) and a positioning frame (42), wherein the transmission plate (41) is movably arranged on the top of the fixed pad (11), and the positioning frame (42) is mounted on the transmission plate (41), and a pair of limit plug plates (43) are inserted on the inner wall of the positioning frame (42), and the limit plug plates (43) are used to limit and clamp the outer side of the gear ring.

7. The assembly gear inner hole positioning polishing machine according to claim 6, characterized in that: A clamping plate (44) is mounted on the limit plug plate (43); one end of the clamping plate (44) is a parallel straight rod, and a plurality of positioning wheels (45) are rotatably mounted on the straight rod; the positioning wheels (45) are eccentrically arranged and are used to abut against the outer tooth gap of the gear ring.

8. The assembly gear inner hole positioning polishing machine according to claim 1, characterized in that: The grinding frame (5) is provided with a fixed shaft, and a positioning ring (51) is provided on the positioning shaft. An annular groove is provided on the outer wall of the positioning ring (51), and a movable ring (52) is rotatably provided inside the annular groove. An air inlet groove (511) is provided on the positioning ring (51). A guide plate is provided on the inner wall of the movable ring (52), and clamping rings are provided at both ends. The clamping rings are installed inside the annular groove. The movable ring (52) is rotatably provided between the clamping rings. The movable ring (52) can rotate under the action of airflow. A plurality of polishing shafts (53) are inserted on the surface of the movable ring (52), a dust collecting plate (54) is installed between the polishing shafts (53), the dust collecting plate (54) is arc-shaped, the dust collecting plate (54) is arc-shaped and has a plurality of elastic tubes (55) on its surface, a plurality of rubber rings are installed on the surface of the elastic tube (55), a compression tube (56) is installed at the bottom of the dust collecting plate (54), the bottom of the compression tube (56) passes through the top of the movable ring (52), and the compression tube (56) can be extended and retracted under the action of air pressure.

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