High-efficiency limiting and grinding equipment for gear

Abstract

The invention discloses gear high-efficiency limiting grinding equipment, and belongs to the technical field of gear grinding, the gear high-efficiency limiting grinding equipment comprises a machine tool and a grinding assembly assembled on the machine tool, a switching unit is assembled in the middle of the machine tool, a placing unit is assembled on the switching unit, the placing unit comprises a base and a bottom shaft rotationally connected to the base, and a shaft rod is inserted into the bottom shaft; the gear polishing device comprises a shaft rod, gears to be polished can be connected to the shaft rod in a sleeving mode one by one, a partition piece is assembled on the outer wall of the shaft rod by forming a vertical guide groove, the partition piece protrudes outwards through a driving piece rotationally connected into the shaft rod, and a gap can be formed between every two gears to be polished arranged on the shaft rod in a sleeving mode; by means of the switching unit and the placing unit, synchronous polishing of multiple gears is achieved, efficiency is remarkably improved, the multiple gears can be connected in a sleeved mode at a time through the combined design of the shaft rods and the partition pieces, gap fixing between every two gears is achieved through the partition pieces, traditional single gear polishing limitation is broken through, batch synchronous polishing is achieved, and production efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gear grinding, in particular to high-efficiency gear limiting grinding equipment. Background Art

[0002] Gears are mechanical components with teeth on their rims that can continuously mesh to transmit motion and power. Gears are toothed mechanical parts that can mesh with each other. After machining, the surface burrs of gears must be removed (i.e., the burrs or flash formed at the intersection of part surfaces must be removed). The quality of gear burr removal has a direct impact on the appearance of the gear, subsequent processing, and the final quality of the gear.

[0003] Traditional gear deburring devices usually use conventional grinding discs to grind the teeth one by one or use grinding discs or brushes to deburr the connection between the gear plate and the tooth surface. However, these methods are limited in implementation because the upper and lower surfaces of the gears will fit together after stacking. This results in only the tooth surface being able to be polished during batch grinding. If the connection between the gear plate and the tooth surface is to be deburred at one time, only one gear can be polished at a time, and multiple gears cannot be assembled on the same mounting shaft for simultaneous grinding, which limits the efficiency of deburring the gear surface. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that only the tooth surface can be polished during batch polishing. If the connection between the gear plate and the tooth surface is to be deburred at one time, only one gear can be polished at a time. A high-efficiency gear limited polishing device is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A high-efficiency limited-position grinding device for gears comprises a machine tool and a grinding assembly mounted on the machine tool, wherein a switching unit is mounted in the middle of the machine tool, and a placement unit is mounted on the switching unit; The placement unit includes a base and a bottom shaft rotatably connected to the base, a shaft is inserted into the bottom shaft, so that the gears to be polished can be sleeved on the shaft one by one, and a separator is assembled on the outer wall of the shaft by opening a vertical guide groove. The separator is rotatably connected to a driving member in the shaft to protrude outward, so that a gap can be generated between the two gears to be polished sleeved on the shaft.

[0006] As a further description of the above technical solution: The placement unit also includes a limit seat fixed on the inner wall of the shaft, and the limit seats are distributed in a group of four, and a group of limit seats corresponds to a separator. The middle part of the inner side of the limit seat is connected to a spring through a mounting hole, and a spherical column is fixed to one end of the spring. Both sides of the separator are provided with a slot adapted to the spherical column.

[0007] As a further description of the above technical solution: The top and bottom of the inner side of the limit seat are provided with a transverse slide groove, and sliders adapted to the transverse slide groove are fixed on both sides of the divider. The divider is installed in each group of limit seats through the sliders, and vertical slide grooves adapted to the sliders are provided on both side walls of the vertical guide groove, and a reversing slide groove connected to the transverse slide groove is provided on one side wall of the vertical slide groove; As a further description of the above technical solution: The driving member includes a driving shaft rotatably connected to the shaft rod, a convex block adapted to the separator is fixed on the top of the outer wall of the driving shaft, and a retaining sleeve is fixed on the bottom of the outer wall of the driving shaft. As a further description of the above technical solution: The grinding assembly includes a bracket fixed on the machine tool, on which a first electric hydraulic rod is assembled, one end of the first electric hydraulic rod is connected to a first motor through a base plate, a sleeve adapted to the shaft rod is fixed to the output end of the first motor, and a limiting groove adapted to the top of the drive shaft is provided at the top of the inner wall of the sleeve.

[0008] As a further description of the above technical solution: An upper mounting frame is fixed to the back of the frame, and two slide rails are fixed to the lower surface of the upper mounting frame and one side of the upper surface of the machine tool. A mounting frame is assembled on the slide rail through a slide seat, and a vertical shaft is rotatably connected in the mounting frame, and polishing parts are arranged at intervals on the surface of the vertical shaft.

[0009] As a further description of the above technical solution: A second motor is fixed on the upper surface of the mounting frame, the output end of the second motor is connected to the top end of the vertical shaft, a second electric hydraulic rod is installed at the edge of the machine tool through a vertical plate, and one end of the second electric hydraulic rod is connected to the mounting frame.

[0010] As a further description of the above technical solution: The switching unit includes a lower disc fixed on the machine tool, an upper disc is rotatably connected to the lower disc, the base is fixed on the upper disc, a third motor is fixed on the lower surface of the lower disc, and the output end of the third motor is connected to the upper disc.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: The switching unit and placement unit are set up to achieve synchronous grinding of multiple gears, which significantly improves efficiency. The combined design of the shaft and the separator can be used to connect multiple gears at one time, and the separator can be used to fix the gap between the two gears. This breaks through the limitations of traditional single gear grinding and realizes batch synchronous grinding, which greatly improves production efficiency. The separator supports the upper and lower surfaces of the gears to form sufficient gaps, and cooperates with the upper and lower grinding parts to work synchronously. The upper and lower surfaces of all gears on the shaft and the connection between the tooth surfaces can be polished at the same time, avoiding the limitation of traditional methods that can only process one side, ensuring that burrs are completely removed; The switching unit realizes automatic switching of multiple workstations through disc rotation. The operator can continuously load and unload gears on one side while simultaneously performing grinding operations on the other side, significantly reducing equipment downtime and waiting time, and improving the overall production rhythm. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of a first viewing angle provided according to an embodiment of the present invention is shown; Figure 2 A schematic diagram showing the structural disassembly of a placement unit provided according to an embodiment of the present invention is shown; Figure 3 The embodiment of the present invention provides Figure 2 Enlarged view of point A in the middle; Figure 4 A schematic structural diagram of a driving member according to an embodiment of the present invention is shown; Figure 5 It shows a schematic structural diagram of a sleeve provided in an embodiment of the present invention after being cut open; Figure 6 A schematic diagram showing the position of a grinding piece after contact with a gear according to an embodiment of the present invention is shown; Figure 7 It shows a schematic structural diagram of an installation frame provided according to an embodiment of the present invention; Figure 8 Shows a schematic diagram of the structural split of the switching unit according to an embodiment of the present invention; Figure 9 A schematic diagram showing the positions of three groups of bumps at four angles according to an embodiment of the present invention is shown; Figure 10 A schematic diagram showing the position of a separator in use according to an embodiment of the present invention; Figure 11 A schematic diagram of a second viewing angle provided according to an embodiment of the present invention is shown.

[0013] Legend: 10. Machine tools; 20. Grinding assembly; 21. First electric hydraulic rod; 22. First motor; 23. Sleeve; 24. Mounting frame; 25. Grinding piece; 26. Second motor; 27. Second electric hydraulic rod; 30. Switching unit; 31. Upper disc; 32. Third motor; 40. Placement unit; 41. Base; 42. Bottom shaft; 43. Shaft; 44. Vertical guide groove; 45. Separator; 46. Limit seat; 47. Spherical column; 48. Horizontal slide groove; 49. Slider; 50. Driving member; 51. Driving shaft; 52. Protrusion; 53. Retaining sleeve. DETAILED DESCRIPTION

[0014] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0015] like Figure 1 - Figure 11 As shown, the present invention provides: The high-efficiency limited-position grinding equipment for gears includes a machine tool 10 and a grinding assembly 20 assembled on the machine tool 10 . A switching unit 30 is assembled in the middle of the machine tool 10 , and a placement unit 40 is assembled on the switching unit 30 .

[0016] like Figure 1 、 Figure 2 、 Figure 3 and Figure 5 As shown, the placement unit 40 includes a base 41 and a bottom shaft 42 rotatably connected to the base 41. A shaft 43 is inserted into the bottom shaft 42 so that the gears to be polished can be sleeved on the shaft 43 one by one. A separator 45 is assembled on the outer wall of the shaft 43 through a vertical guide groove 44. The separator 45 is rotatably connected to a driving member 50 in the shaft 43 to protrude outward, so that a gap can be generated between the two gears to be polished sleeved on the shaft 43. In further detail, the placement unit 40 further includes a limit seat 46 fixed to the inner wall of the shaft 43. The limit seats 46 are distributed in a group of four, and a group of limit seats 46 corresponds to one separator 45. A spring is connected to the middle portion of the inner side of the limit seat 46 through a mounting hole. A spherical column 47 is fixed to one end of the spring. Both sides of the separator 45 are provided with a slot adapted to the spherical column 47. A transverse chute 48 is provided at the top and bottom of the inner side of the limit seat 46. Sliders 49 adapted to the transverse chute 48 are fixed on both sides of the divider 45. The divider 45 is installed in each set of limit seats 46 through the slides 49. Vertical chute adapted to the slides 49 is provided on both side walls of the vertical guide groove 44. A reversing chute connected to the transverse chute 48 is provided on one side wall of the vertical chute. Specifically, in the initial state, the separator 45 is slidably installed in the limit seat 46 via the slider 49. At the same time, the arcuate end of the separator 45 is placed in the vertical guide groove 44 and is flush with the outer wall of the shaft 43. In this state, the spherical column 47 is engaged in the groove on the separator 45 under the action of the spring force, so that the position of the separator 45 in this state is fixed and will not move automatically. In particular, when the separator 45 moves outward along the horizontal slide 48, it will first hit the spherical column 47 and be retracted into the mounting hole. Then, when the slider 49 moves from the horizontal slide 48 to the reversing slide, after continuing to move, the slider 49 will enter the vertical slide. At this time, the separator 45 can move downward along the vertical slide. It is worth noting that a first damping pad is provided on the inner wall of the vertical guide groove 44, which is used to ensure that the separator 45 can stay when not subjected to external force and will not move downward due to its own gravity. It is worth noting that a support ring is pre-installed on the shaft 43 for mounting the gear at the bottom, so that a gap is generated between the lower surface of the gear at the bottom and the base 41. At the same time, the upper and lower surfaces of the separator 45 and the upper surface of the support ring are provided with shock-absorbing pads for shock-absorbing the impact force generated during collision. When placing the gears, first place a gear to be polished on the shaft 43, and it slides down to the support ring under the action of its own gravity. When continuing to place the gears, it is necessary to place the gears on the shaft 43 after the lowest separator 45 protrudes outward. A gear to be polished is placed on the shaft 43. Under the action of the weight of the gear, the separator 45 is driven to slide downward together, so that the lower surface of the separator 45 contacts the surface of the previously placed gear. Then the separator 45 of the middle layer is driven to protrude outward and the gear is placed again. This process is repeated. When all three layers of separators 45 are used, four gears to be polished are placed on the surface of the shaft 43. The separators 45 separate the two gears to be polished, ensuring that there is sufficient clearance between the upper and lower surfaces of the two gears, so that the upper and lower surfaces of the gears can be polished. It should be noted that the outer wall of the shaft 43 is integrally formed with a key bar that matches the keyway on the gear, so that the gear will not rotate on its own after being mounted on the shaft 43, but can only rotate with the shaft 43; Furthermore, Figure 3 、 Figure 4 and Figure 9As shown, the driving member 50 includes a driving shaft 51 rotatably connected to the shaft 43. A protrusion 52 adapted to the partition 45 is fixed to the top of the outer wall of the driving shaft 51. A retaining sleeve 53 is fixed to the bottom of the outer wall of the driving shaft 51. Preferably, the protrusions 52 are evenly divided into three groups, and the positions of the protrusions 52 in different groups are different. Specifically, the position of the bumps 52 in the middle group corresponds to the position of the bumps 52 in the bottom group after being rotated 30° clockwise, that is, the position of the bumps 52 in the middle group after being rotated 30° is on the same vertical line as the position of the bumps 52 in the bottom group in the initial state, and the position of the bumps 52 in the top group corresponds to the position of the bumps 52 in the middle group after being rotated 30° clockwise, that is, the position of the bumps 52 in the top group after being rotated 30° clockwise is on the same vertical line as the position of the bumps 52 in the middle group in the initial state. At the same time, the positions of the three groups of bumps 52 differ by 30° in sequence. Furthermore, when placing gears, after a gear is placed on the shaft 43, the driving shaft 51 rotates 30° clockwise. During the rotation, the protrusions 52 of the lowermost group will gradually push the lowermost separator 45 to protrude outward, and then a second gear is placed on the shaft 43. This gear will drive the lowermost separator 45 to move downward until it hits the first gear. Then the driving shaft 51 is controlled to rotate 30° clockwise again. During this process, the protrusions 52 of the middle group push the middle separator 45 to protrude outward, and then a third gear is placed on the shaft 43. This gear will drive the middle separator 45 to move downward until it hits the second gear. Then the driving shaft 51 is controlled to rotate 30° clockwise again. Finally, the fourth gear is placed on the shaft 43. This gear will drive the uppermost separator 45 to move downward until it hits the third gear. At this time, the gear placement is completed. Among them, it is worth noting that after the slider 49 on the separator 45 enters the vertical slide groove, it can only move downward along the vertical slide groove without offsetting or moving inward again. At the same time, during the downward movement, the retaining sleeve 53 will also fit with the inward end of the separator 45 (the outer wall of the retaining sleeve 53 and the end of the protrusion 52 are on the same loop line). At the same time, a second damping pad is provided at the rotation connection between the drive shaft 51 and the shaft rod 43 to keep the drive shaft 51 in place after rotation, and a damping pad is engraved on the top edge of the shaft rod 43 for adjusting the angle. The angle scale line indicates the angle, and the top of the drive shaft 51 is fixed with an indicator arrow for indicating the rotation angle. Through the cooperation of the angle scale line and the indicator arrow, the angle accuracy can be guaranteed when the drive shaft 51 rotates. It is worth noting that after all the partitions 45 are used, the drive shaft 51 is rotated counterclockwise to restore it to its initial state. In this state, when the grinding is completed, after removing a gear, a partition 45 is moved upward, and it slides back into the corresponding level of the limit seat 46 group through the reversing groove, and the position is re-limited by the spherical column 47.

[0017] like Figure 1 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 11 As shown, the grinding assembly 20 includes a bracket fixed to the machine tool 10, on which a first electric hydraulic rod 21 is mounted. One end of the first electric hydraulic rod 21 is connected to a first motor 22 via a base plate. A sleeve 23 adapted to the shaft 43 is fixed to the output end of the first motor 22, and a limiting groove adapted to the top end of the drive shaft 51 is formed on the top of the inner wall of the sleeve 23. An upper mounting frame is fixed to the back of the frame, and two slide rails are fixed to the lower surface of the upper mounting frame and one side of the upper surface of the machine tool 10. A mounting frame 24 is assembled on the slide rail through a slide seat. A vertical shaft is rotatably connected in the mounting frame 24, and grinding pieces 25 are arranged at intervals on the surface of the vertical shaft. In particular, the intervals between the grinding pieces 25 correspond to the height of the separator 45. Preferably, the grinding piece 25 is a grinding wheel or a brush. Furthermore, if a brush is used for grinding, the brush material is preferably ceramic fiber brush filaments, and other materials (such as steel brushes) can also be selected according to actual needs. A second motor 26 is fixed to the upper surface of the mounting frame 24. The output end of the second motor 26 is connected to the top end of the vertical shaft. A second electric hydraulic rod 27 is installed at the edge of the machine tool 10 through a vertical plate. One end of the second electric hydraulic rod 27 is connected to the mounting frame 24. When the base 41 rotates with the shaft 43 to the bottom of the sleeve 23, the first electric hydraulic rod 21 is activated to drive the first motor 22 to drive the sleeve 23 to move downward, so that it is gradually sleeved on the surface of the shaft 43 until the top of the drive shaft 51 is stuck in the limiting groove. At this time, the sleeve 23 fixes the position of the shaft 43, and the bottom end of the sleeve 23 abuts against the topmost gear, so that the gear is fixed in position to prevent it from moving upward during the grinding process. At the same time, the position of the drive shaft 51 can also be fixed through the slot. At this time, the second motor 26 is started again to drive the vertical shaft to rotate with the grinding piece 25 to grind the upper and lower surfaces of the gear, and at the same time, the burrs on the upper and lower surfaces of the gear can be removed. During the grinding process, the first motor 22 needs to be started to drive the sleeve 23 to rotate with the shaft 43, so that the gear can also rotate together, so that all positions on the gear surface can be ground. After the grinding is completed, the first electric hydraulic rod 21 needs to be used to control the first motor 22 to move the sleeve 23 upward and separate it from the shaft 43, and then drive the ground gear to move away from under the sleeve 23.

[0018] like Figure 8 and Figure 11As shown, the switching unit 30 includes a lower disc fixed on the machine tool 10, and the upper disc 31 is rotatably connected to the lower disc, and the base 41 is fixed to the upper disc 31. In particular, a plurality of bases 41 are installed on the surface of the upper disc 31 in the form of a ring array, and a third motor 32 is fixed to the lower surface of the lower disc, and the output end of the third motor 32 is connected to the upper disc 31. Preferably, a blocking plate is fixed on the upper disc 31 for separating the two bases 41. At the same time, a tough sheet is fixed on the inner wall of the bracket. When one of the bases 41 rotates to the position corresponding to the sleeve 23, the tough sheet will contact the blocking plate, thereby separating the gear on the base 41 from other gears, thereby preventing debris from splashing onto the surface of the gear that has been polished during the grinding process; In particular, during the actual operation, the personnel stand on the side or front of the machine tool 10 to load and unload gears. When the personnel completes one installation, the third motor 32 controls the upper disc 31 to rotate, so that the next base 41 and the shaft 43 on it rotate in front of the personnel, and then continue to install the gear to be installed. It is worth noting that when the gear polished by the polishing assembly 20 rotates from the polishing position to the front of the personnel, it is necessary to remove the upper gear first, and then slide the exposed partition 45 upward until it is against the top wall of the vertical guide groove 44. After hitting the top, push the partition 45 inward so that it moves toward the limit seat 46 through the corresponding reversing slide groove until the spherical column 47 is stuck in the slot on the partition 45. At this time, the partition 45 returns to its initial state, and then take the next gear, and repeat the above-mentioned operation of resetting the partition 45. Repeat this process to remove all gears and reset all partitions 45. Then, according to the above-mentioned operation of loading the gear to be polished, the new gear is placed on the empty shaft 43.

[0019] Specifically, when this high-efficiency gear limit grinding equipment is working / in use: 1. Gear loading steps Preparation of the shaft 43: Insert the shaft 43 into the bottom shaft 42, making sure the key bar is aligned with the gear keyway; First gear placement: Insert the first gear into the shaft 43, with its lower surface resting on the support ring; Activate the divider 45: Rotate the drive shaft 51 to a specified angle, such as 30° clockwise, and push the bottom divider 45 outward through the protrusion 52 to fix the gear position; Repeat loading: put the subsequent gears in order, activating the corresponding divider 45 after each layer of gears is placed, until the shaft 43 is full of gears; 2. Docking and fixing of polishing assembly 20 Positioning of the shaft 43: Rotating the upper disc 31 by the switching unit 30 moves the base 41 loaded with the gear to the grinding station; The sleeve 23 is pressed down: the first electric hydraulic rod 21 is activated, the driving sleeve 23 is inserted into the top of the shaft 43, the limiting groove is connected with the top of the driving shaft 51, the shaft 43 is fixed and the uppermost gear is pressed; 3. Execution of grinding operations Start grinding: The second motor 26 drives the vertical shaft to rotate, driving the grinding member 25 to grind the upper and lower surfaces of the gear and the connection between the teeth; Synchronous rotation: The first motor 22 drives the shaft 43 to rotate through the sleeve 23, so that the gear contacts the grinding piece 25 in all directions, ensuring no dead angle processing; 4. Workstation switching and continuous operation Grinding is completed: the first electric hydraulic rod 21 lifts the sleeve 23 and releases the shaft 43; Automatic switching: The third motor 32 drives the upper disc 31 to rotate, moving the next set of gears to be ground to the work station, while the blocking plate isolates the processed gears to avoid debris contamination; 5. Gear unloading and resetting Remove gears layer by layer: Start removing the gears from the top layer. After each layer is removed, manually slide the separator 45 up along the vertical guide groove 44 and push it into the limit seat 46 through the reversing slide groove. The spherical column 47 will automatically lock and reset. Recycling: After all gears are unloaded, the separator 45 returns to its original state and the shaft 43 can be reloaded with new gears for the next round of grinding; Note: During operation, the rotation angle of the drive shaft 51 must be calibrated using the angle scale and the indicator arrow to ensure accurate activation of the separator 45; the spacing of the grinding piece 25 must match the height of the separator 45 to avoid interference.

[0020] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A high-efficiency gear limit grinding device, comprising a machine tool (10) and a grinding assembly (20) mounted on the machine tool (10), wherein a switching unit (30) is mounted in the middle of the machine tool (10), characterized in that: The switching unit (30) is equipped with a placement unit (40); The placement unit (40) includes a base (41) and a bottom shaft (42) rotatably connected to the base (41). A shaft (43) is inserted into the bottom shaft (42), so that the gears to be polished can be sleeved on the shaft (43) one by one. A separator (45) is assembled on the outer wall of the shaft (43) by providing a vertical guide groove (44). The separator (45) is rotatably connected to a driving member (50) in the shaft (43) to protrude outward, so that a gap can be generated between two gears to be polished sleeved on the shaft (43).

2. The high-efficiency gear limiting grinding equipment according to claim 1 is characterized in that: The placement unit (40) further includes a limit seat (46) fixed on the inner wall of the shaft (43), wherein the limit seats (46) are distributed in a group of four, and one group of the limit seats (46) corresponds to one separator (45), and a spring is connected to the middle portion of the inner side of the limit seat (46) through a mounting hole, and a spherical column (47) is fixed to one end of the spring, and a slot adapted to the spherical column (47) is provided on both sides of the separator (45).

3. The high-efficiency gear limiting grinding equipment according to claim 2 is characterized in that: The top and bottom of the inner side of the limit seat (46) are provided with a transverse slide groove (48), and sliders (49) adapted to the transverse slide groove (48) are fixed on both sides of the partition (45). The partition (45) is installed in each group of limit seats (46) through the sliders (49), and vertical slide grooves adapted to the sliders (49) are provided on both side walls of the vertical guide groove (44), and a reversing slide groove connected to the transverse slide groove (48) is provided on one side wall of the vertical slide groove.

4. The high-efficiency gear limiting grinding equipment according to claim 3 is characterized in that: The driving member (50) includes a driving shaft (51) rotatably connected to the shaft (43), a protrusion (52) adapted to the partition (45) is fixed to the top of the outer wall of the driving shaft (51), and a retaining sleeve (53) is fixed to the bottom of the outer wall of the driving shaft (51).

5. The high-efficiency gear limiting grinding equipment according to claim 1 is characterized in that: The grinding assembly (20) includes a bracket fixed on the machine tool (10), a first electric hydraulic rod (21) is mounted on the bracket, one end of the first electric hydraulic rod (21) is connected to a first motor (22) via a base plate, a sleeve (23) adapted to the shaft (43) is fixed to the output end of the first motor (22), and a limiting groove adapted to the top end of the drive shaft (51) is provided on the top of the inner wall of the sleeve (23).

6. The high-efficiency gear limiting grinding equipment according to claim 5, characterized in that: An upper mounting frame is fixed to the back of the frame, and two slide rails are fixed to the lower surface of the upper mounting frame and one side of the upper surface of the machine tool (10). A mounting frame (24) is assembled on the slide rail through a slide seat, and a vertical shaft is rotatably connected in the mounting frame (24), and grinding pieces (25) are arranged at intervals on the surface of the vertical shaft.

7. The high-efficiency gear limiting grinding equipment according to claim 6, characterized in that: A second motor (26) is fixed on the upper surface of the mounting frame (24), and an output end of the second motor (26) is connected to the top end of the vertical shaft. A second electric hydraulic rod (27) is installed at the edge of the machine tool (10) through a vertical plate, and one end of the second electric hydraulic rod (27) is connected to the mounting frame (24).

8. The high-efficiency gear limiting grinding equipment according to claim 1, characterized in that: The switching unit (30) comprises a lower disc fixed on the machine tool (10), an upper disc (31) being rotatably connected to the lower disc, the base (41) being fixed on the upper disc (31), a third motor (32) being fixed on the lower surface of the lower disc, and an output end of the third motor (32) being connected to the upper disc (31).

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