Inner diameter grinding device and grinding method for intelligent production of bicycle hub

Abstract

The invention discloses an inner diameter grinding device and method for intelligent production of a bicycle hub, and relates to the field of bicycle hub grinding, the inner diameter grinding device comprises a machining platform and a hub rotationally erected on the machining platform, an inner ratchet groove is formed in one end of the hub, and a lifting air cylinder is further fixedly arranged at the top of the machining platform; the grinding unit drives the grinding component to rotate at a high speed, burrs on the surfaces of ratchets in an inner ratchet groove are fully ground, and through the effect of the quick disassembly and assembly unit, the burrs on the surfaces of the ratchets in the inner ratchet groove are ground more accurately before and after the grinding unit conducts grinding operation. According to the inner ratchet groove polishing device, the unlocking state and the locking state of the polishing component can be switched, that is, a worker can conveniently replace the proper polishing component before polishing operation, and in the polishing operation process, the polishing component can be automatically locked, and effective polishing operation aiming at an inner ratchet groove can be carried out.

Description

Technical Field

[0001] The invention relates to the field of bicycle hub grinding, and in particular to an inner diameter grinding device and a grinding method for intelligent production of bicycle hubs. Background Art

[0002] The bicycle hub is an important part that connects the spokes and the axle. It is connected to the rim through the spokes to form a complete wheel set. The hub drives the wheel set through a ratchet device. When pedaling, the pawl bites the ratchet teeth to transmit the driving force; when pedaling stops, the pawl releases the ratchet teeth, and the bicycle slides by inertia. During the production process of the hub, the inner wall of the hub needs to be polished. After polishing, it is easy to assemble various transmission structures.

[0003] A Chinese public document (CN116587083A) records an inner diameter grinding device for bicycle hub production. In the document, a grinding component 1 is provided to grind the inner wall of the cavity section where bearings are installed at both ends of the bicycle hub at the same time. By rotating the hexagonal rotating block, the collar, the limit block and the limit groove can be used in cooperation to allow the collar to slide on the outer surface of the threaded connecting rod, thereby pushing multiple drag rods to move. Since the connection between the drag rod, the collar and the slider is a movable connection, and the inclined rail and the connecting column are installed at a certain angle, rotating the hexagonal rotating block can allow the slider to move in the inclined rail, thereby pushing multiple L-shaped grinding plates outward, so that no matter how large the inner diameter of the cavity section where the bearings are installed on the bicycle hub is, it can be effectively ground in this way. However, the above disclosed solution does not take into account that there is an assembly chamber for the inner ratchet inside the hub, and the inner wall of the chamber is provided with a number of ratchets equidistantly distributed around the circumference. Due to the protruding structure of the ratchet, the grinding method described above cannot effectively grind the ratchet, that is, many details and corners of the ratchet cannot be ground, resulting in metal burrs or small raised structures between adjacent ratchet teeth. This structure will cause the hub jack to be unable to fully and effectively engage with the ratchet, or will cause the hub jack to wear faster during each engagement and separation process with the ratchet, making the hub jack easily damaged. Summary of the invention

[0004] The purpose of the present invention is to provide an inner diameter grinding device and a grinding method for intelligent production of bicycle hubs 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: an inner diameter grinding device for intelligent production of bicycle hubs, comprising: a processing platform and a hub rotatably mounted on the processing platform, one end of the hub is provided with an inner ratchet groove, a lifting cylinder is fixedly arranged on the top of the processing platform, the output end of the lifting cylinder faces upward, and a fixing plate is fixedly mounted on the output end of the lifting cylinder, wherein the bracket for mounting the hub is a supporting frame commonly used in the prior art, and the hub can also be driven by an external motor to rotate at a uniform speed inside the bracket; It also includes: a grinding unit, the grinding unit includes a grinding component, the grinding unit grinds the inner wall of the hub through the grinding component, the grinding unit is mounted on the top of the fixing plate, and the grinding component is located on a side of the grinding unit facing the inner ratchet groove; The quick disassembly unit is used to automatically lock and unlock the grinding component.

[0006] Preferably, the grinding unit includes a supporting plate located directly above the fixed plate, and four positioning rods distributed in a matrix are embedded inside the supporting plate, the bottom of the positioning rod slides through the fixed plate, and a tension spring is fixedly arranged between the fixed plate and the supporting plate, a gear differential case and a drive motor are fixedly arranged on the upper end surface of the supporting plate, and the drive motor is located on the side of the gear differential case away from the hub, the output end of the drive motor is connected to the output end of the gear differential case through a coupling, the grinding component is located at the output end of the gear differential case, and a toggle component is also arranged between the supporting plate and the fixed plate, and the gear differential case is a continuously variable transmission, which can freely adjust the speed of the output end of the gear differential case.

[0007] Preferably, the toggle component includes four first slide grooves arranged in a matrix pattern inside the carrier plate, and each of the first slide grooves is respectively distributed outside the four positioning rods, the positioning rods and the first slide grooves are assembled for transverse sliding, and the interior of the carrier plate is also axially rotatably assembled with a rotating shaft, the outer surface of the output end of the drive motor and the upper end of the rotating shaft are fixedly provided with bevel gears, the two bevel gears are meshed with each other, the outer surface of the lower end of the rotating shaft is fixedly provided with a cam column, and the outer wall of the cam column is slidably fitted with the fixed plate, and when the drive motor is running, it can drive the rotating shaft and the cam column to rotate through the two meshing bevel gears.

[0008] Preferably, the grinding component includes a driving shaft fixedly arranged at the output end of the gear differential case, a cleaning sleeve is movably mounted on the end of the driving shaft away from the gear differential case, and an assembly ring is fixedly mounted on the end of the cleaning sleeve close to the gear differential case, the outer surface of the driving shaft is also fixedly mounted with a baffle which serves to limit the assembly ring, a plurality of grinding brushes are fixedly inserted on the outer surface of the cleaning sleeve, and the cleaning sleeve grinds the ratchet surface of the inner ratchet groove through the grinding brushes.

[0009] Preferably, the quick disassembly and assembly unit includes a second chamber and a first chamber opened inside the drive shaft, and the second chamber is located at one end of the first chamber close to the gear differential case, a touch rod is also slidably installed inside the drive shaft, and two ends of the touch rod are respectively placed inside the second chamber and the first chamber, a circular boss is axially slidably sleeved between the inside of the second chamber and the outer surface of the drive shaft, a receiving plate is fixedly provided at one end of the touch rod close to the gear differential case, and a second spring is fixedly provided between the receiving plate and the circular boss, a limiting component is provided between the other end of the touch rod and the assembly ring, and a touching component is also provided between the fixing plate and the circular boss, and when the distance between the fixing plate and the bearing plate increases, the limiting component can be activated by the touching component, and the drive shaft and the cleaning sleeve are fixed under the action of the limiting component.

[0010] Preferably, the limiting component includes a conical block fixedly arranged on the end of the touch rod away from the gear differential case, the inner wall of the first chamber is slidably mounted with a plurality of pins equidistantly distributed around the circumference, the outer surface of the end of the pin extending into the first chamber is fixedly mounted with a collar, and a third spring is fixedly arranged between the end of the collar away from the axis of the drive shaft and the inner wall of the drive shaft, a plurality of positioning grooves are also provided inside the assembly ring, and the ends of a plurality of the pins are movably embedded in a plurality of the positioning grooves, respectively, the end of the pin away from the positioning groove is slidably fitted with the outer surface of the conical block, the outer diameter of the conical block gradually decreases from the gear differential case to the hub, and when the conical block moves toward the hub, a plurality of pins can be pushed synchronously, so that the drive shaft and the cleaning sleeve are confined together.

[0011] Preferably, the touch component includes two connecting columns slidably inserted into the inside of the carrying plate, a limit block is fixedly provided on the upper end of the connecting column, a sliding block is slidably mounted between the two connecting columns, the sliding block is displaced above the driving shaft, and a first spring is fixedly provided between the bottom of each limit block and the sliding block, two second sliding grooves are provided inside the fixed plate, and the bottoms of the two connecting columns are both laterally slidably embedded in the inside of the second sliding grooves, an extension rod is fixedly provided at the bottom center of the sliding block, and a ball is rotatably embedded in the exposed end of the extension rod, the ball is in sliding contact with the oblique arc surface of the circular boss, and when the extension rod is pressed downward, the circular boss can be pushed by the ball, thereby changing the position of the circular boss and the touch rod.

[0012] Preferably, a thread groove is formed on the outer surface of the cleaning sleeve, and the end of the cleaning sleeve away from the gear differential case is open, and the open port enables the end of the thread groove to collect grinding debris and discharge it outward through the thread groove.

[0013] Preferably, the oblique arc surface of the circular boss faces the gear differential box.

[0014] A grinding method for an inner diameter grinding device of an intelligently produced bicycle hub, the grinding method comprising the following steps: S1. During the debugging phase before grinding, the hub is rotated and mounted on the upper end surface of the processing platform, and the cleaning sleeve is extended into the inner ratchet groove, and then the fixed plate is moved down by the lifting cylinder. Since the cleaning sleeve is stuck in the inner ratchet groove, the tension spring can be stretched, so that the cleaning sleeve is in elastic contact with the outer surface of the ratchet teeth of the inner ratchet groove; S2, triggering stage, when the distance between the fixed plate and the bearing plate increases, the round boss, the touch rod and the conical block are pushed by the ball bearing, so that the limiting component limits the positional relationship between the driving shaft and the cleaning sleeve; S3, grinding stage, the driving motor and the gear differential box drive the driving shaft to rotate with the cleaning brush sleeve at high speed, and the cleaning brush sleeve fully grinds the inner wall of the inner ratchet groove through a plurality of grinding brushes distributed on its surface, and the driving shaft and the cleaning brush sleeve can slide back and forth frequently laterally against the inner wall of the inner ratchet groove by toggling the component, thereby improving the grinding effect.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention drives the grinding component to rotate at a high speed through the grinding unit, so as to fully grind and process the burrs on the surface of the ratchet teeth in the inner ratchet groove. Moreover, through the function of the quick disassembly and assembly unit, the grinding component can be switched between unlocking and locking states before and after the grinding unit performs the grinding operation, that is, before the grinding operation, the staff can conveniently replace the appropriate grinding component, and during the grinding operation, the grinding component can be automatically locked, and effective grinding operation targeting the inner ratchet groove can be performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the drive motor and the gear differential box of the present invention; Figure 3 It is a schematic diagram of the bevel gear structure of the present invention; Figure 4 This is a schematic diagram of the structure of the first chute and the second chute of the present invention; Figure 5 It is a schematic diagram of the structure of the first spring and the sliding block of the present invention; Figure 6 This is a schematic diagram of the internal structure of the drive shaft of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle; Figure 8 It is a schematic diagram of the structure of the cleaning sleeve of the present invention.

[0017] In the figure: 1. processing platform; 2. lifting cylinder; 3. fixing plate; 4. bearing plate; 5. tension spring; 6. positioning rod; 7. driving motor; 8. gear differential box; 9. hub; 10. inner ratchet groove; 11. first chamber; 12. rotating shaft; 13. bevel gear; 14. cam column; 15. first slide groove; 16. second slide groove; 17. driving shaft; 18. baffle; 19. assembly ring; 20. cleaning sleeve; 21. threaded groove; 22. connecting column; 23. limit block; 24. first spring; 25. sliding block; 26. second chamber; 27. round boss; 28. touch rod; 29. ​​second spring; 30. extension rod; 31. ball; 32. positioning groove; 33. grinding brush; 34. latch; 35. collar; 36. third spring; 37. conical block. DETAILED DESCRIPTION

[0018] 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.

[0019] Example 1: Please refer to Figure 1-Figure 5 The inner diameter grinding device of the intelligent production of a bicycle hub shown in the figure comprises: a processing platform 1 and a hub 9 rotatably mounted on the processing platform 1, one end of the hub 9 is provided with an inner ratchet groove 10, a lifting cylinder 2 is fixedly arranged on the top of the processing platform 1, the output end of the lifting cylinder 2 faces upward, and a fixing plate 3 is fixedly mounted on the output end of the lifting cylinder 2, wherein the bracket for mounting the hub 9 is a supporting frame commonly used in the prior art, and the hub 9 can also be driven by an external motor to rotate at a uniform speed inside the bracket; It also includes: a grinding unit, the grinding unit includes a grinding component, the grinding unit grinds the inner wall of the hub 9 through the grinding component, the grinding unit is mounted on the top of the fixing plate 3, and the grinding component is located on the side of the grinding unit facing the inner ratchet groove 10; The quick disassembly unit is used to automatically lock and unlock the grinding parts.

[0020] The grinding unit includes a supporting plate 4 located directly above the fixed plate 3, and four positioning rods 6 distributed in a matrix are embedded inside the supporting plate 4. The bottom of the positioning rod 6 slides through the fixed plate 3. A tension spring 5 is also fixedly arranged between the fixed plate 3 and the supporting plate 4. A gear differential box 8 and a drive motor 7 are fixedly arranged on the upper end surface of the supporting plate 4, and the drive motor 7 is located on the side of the gear differential box 8 away from the hub 9. The output end of the drive motor 7 is connected to the output end of the gear differential box 8 through a coupling. The grinding component is located at the output end of the gear differential box 8. A toggle component is also arranged between the supporting plate 4 and the fixed plate 3. The gear differential box 8 is a continuously variable transmission, which can freely adjust the speed of the output end of the gear differential box 8.

[0021] The toggle component includes four first slide grooves 15 distributed in a matrix inside the carrier plate 4, and each first slide groove 15 is respectively distributed on the outside of four positioning rods 6. The positioning rods 6 and the first slide grooves 15 are assembled for transverse sliding. The interior of the carrier plate 4 is also axially rotatably assembled with a rotating shaft 12. The outer surface of the output end of the drive motor 7 and the upper end of the rotating shaft 12 are fixedly provided with a bevel gear 13. The two bevel gears 13 are meshed with each other. The outer surface of the lower end of the rotating shaft 12 is fixedly sleeved with a cam column 14, and the outer wall of the cam column 14 is slidably fitted with the fixed plate 3. When the drive motor 7 is running, it can drive the rotating shaft 12 and the cam column 14 to rotate through the two meshing bevel gears 13.

[0022] The grinding component includes a drive shaft 17 fixedly arranged at the output end of the gear differential case 8, a cleaning sleeve 20 is mounted on the end of the drive shaft 17 away from the gear differential case 8, and an assembly ring 19 is fixedly arranged on the end of the cleaning sleeve 20 close to the gear differential case 8, and a baffle 18 is fixedly mounted on the outer surface of the drive shaft 17 for limiting the assembly ring 19, and a plurality of grinding brushes 33 are fixedly inserted on the outer surface of the cleaning sleeve 20, and the cleaning sleeve 20 grinds the ratchet surface of the inner ratchet groove 10 through the grinding brushes 33.

[0023] A grinding method for an inner diameter grinding device of an intelligently produced bicycle hub, the grinding method comprising the following steps: S1, in the debugging stage before grinding, the hub 9 is rotated and mounted on the upper end surface of the processing platform 1, and the cleaning sleeve 20 is extended into the inner ratchet groove 10, and then the fixed plate 3 is moved downward by the lifting cylinder 2. Since the cleaning sleeve 20 is stuck in the inner ratchet groove 10, the tension spring 5 can be stretched, so that the cleaning sleeve 20 is in elastic contact with the outer surface of the ratchet teeth of the inner ratchet groove 10; S2, triggering stage, when the distance between the fixing plate 3 and the bearing plate 4 increases, the round boss 27, the touch rod 28 and the conical block 37 are pushed by the ball 31, so that the limiting component limits the positional relationship between the driving shaft 17 and the cleaning sleeve 20; S3, grinding stage, the driving motor 7 and the gear differential box 8 drive the driving shaft 17 to rotate with the cleaning sleeve 20 at high speed, and the cleaning sleeve 20 has a plurality of grinding brushes 33 distributed on its surface to fully grind the inner wall of the inner ratchet groove 10, and the driving shaft 17 and the cleaning sleeve 20 can slide back and forth frequently laterally against the inner wall of the inner ratchet groove 10 by moving the components, thereby improving the grinding effect.

[0024] Working principle: In this solution, the cleaning sleeve 20 is directly fixed on the outer surface of the driving shaft 17. After the cleaning sleeve 20 is placed inside the inner ratchet groove 10, the lifting cylinder 2 drives the fixed plate 3 to move downward, thereby moving the bearing plate 4 and all the structures above the bearing plate 4 downward together, so that the cleaning sleeve 20 can be pressed against the inner wall of the inner ratchet groove 10. At this time, the fixed plate 3 continues to move downward, increasing the distance between the fixed plate 3 and the bearing plate 4, and stretching the tension spring 5, so that the cleaning sleeve 20 can The inner wall of the inner ratchet groove 10 can be elastically attached to the inner wall of the inner ratchet groove 10. After the state adjustment of the lifting cylinder 2 is completed, the hub 9 can be driven to rotate by the motor in the prior art. During the rotation of the hub 9, due to the action of the tension spring 5, the grinding brush 33 on the surface of the cleaning sleeve 20 can be fully in contact with the ratchet surfaces of the inner ratchet groove 10. At this time, the driving motor 7 is started, and the driving shaft 17 is driven by the gear differential box 8 to rotate at a high speed with the cleaning sleeve 20 to grind the inner wall of the inner ratchet groove 10. During operation, the driving motor 7 can also drive the rotating shaft 12 and the cam column 14 to rotate at the same time. Through the lateral sliding engagement of the positioning rod 6 and the first slide groove 15, the supporting plate 4 can slide back and forth frequently above the fixed plate 3, so that the screening sleeve 20 can also move back and forth laterally while rotating at high speed, further improving the grinding effect of the inner wall of the inner ratchet groove 10.

[0025] Example 2: Please refer to Figure 5-Figure 8 This embodiment is a further description of the first embodiment. The quick disassembly unit includes a second chamber 26 and a first chamber 11 opened inside the drive shaft 17, and the second chamber 26 is located at one end of the first chamber 11 close to the gear differential case 8. A feeler rod 28 is also slidably mounted inside the drive shaft 17, and the two ends of the feeler rod 28 are respectively placed inside the second chamber 26 and the first chamber 11. A circular boss 27 is axially slidably mounted between the inside of the second chamber 26 and the outer surface of the drive shaft 17, and the feeler rod 28 is close to the gear differential case 8. A receiving plate is fixedly provided at one end of the near-gear differential case 8, and a second spring 29 is fixedly provided between the receiving plate and the circular boss 27. The bearing plate is slidably engaged with the second chamber 26. A limiting component is provided between the other end of the touch rod 28 and the assembly ring 19, and a touching component is also provided between the fixed plate 3 and the circular boss 27. When the distance between the fixed plate 3 and the bearing plate 4 increases, the limiting component can be activated by the touching component, and the drive shaft 17 and the cleaning sleeve 20 are fixed under the action of the limiting component.

[0026] The limiting component includes a conical block 37 fixedly arranged at the end of the feeler rod 28 away from the gear differential case 8, and a plurality of latches 34 equidistantly distributed around the circumference are slidably mounted on the inner wall of the first chamber 11. A collar 35 is fixedly mounted on the outer surface of one end of the latch 34 extending into the first chamber 11, and a third spring 36 is fixedly arranged between the end of the collar 35 away from the axis of the drive shaft 17 and the inner wall of the drive shaft 17. A plurality of positioning grooves 32 are also provided inside the assembly ring 19, and the ends of a plurality of latches 34 are movably embedded in the interior of a plurality of positioning grooves 32, respectively. The end of the latch 34 away from the positioning groove 32 is slidably fitted with the outer surface of the conical block 37, and the outer diameter of the conical block 37 is gradually reduced from the gear differential case 8 to the hub 9. When the conical block 37 moves toward the hub 9, a plurality of latches 34 can be synchronously pushed forward, so that the drive shaft 17 and the cleaning sleeve 20 are confined together.

[0027] The touch component includes two connecting columns 22 slidably inserted into the inside of the bearing plate 4, and a limit block 23 is fixedly provided at the upper end of the connecting column 22. A sliding block 25 is slidably mounted between the two connecting columns 22. The sliding block 25 is displaced above the driving shaft 17, and a first spring 24 is fixedly provided between the bottom of each limit block 23 and the sliding block 25. Two second slide grooves 16 are provided inside the fixed plate 3, and the bottoms of the two connecting columns 22 are both laterally slidably installed inside the second slide grooves 16. An extension rod 30 is fixedly provided at the bottom center of the sliding block 25, and a ball 31 is rotatably installed at the exposed end of the extension rod 30. The ball 31 is in sliding contact with the oblique arc surface of the circular boss 27. When the extension rod 30 is pressed downward, the circular boss 27 can be pushed by the ball 31, thereby changing the position of the circular boss 27 and the touch rod 28.

[0028] A thread groove 21 is formed on the outer surface of the cleaning sleeve 20 , and the end of the cleaning sleeve 20 away from the gear differential case 8 is open. The open port allows the end of the thread groove 21 to collect grinding debris and discharge it outward through the thread groove 21 .

[0029] The oblique arc surface of the circular boss 27 faces the gear differential box 8 .

[0030] In this embodiment: In this scheme, the cleaning sleeve 20 is movably mounted on the outer surface of the driving shaft 17. When the distance between the fixed plate 3 and the bearing plate 4 has not increased, the cleaning sleeve 20 is always in an active state. In this state, the staff can replace the model of the cleaning sleeve 20, or replace the old and severely worn cleaning sleeve 20. When the distance between the fixed plate 3 and the bearing plate 4 increases, the connecting column 22 pushes the sliding block 25 and the extension rod 30 downward through the limit block 23 and the first spring 24. Press and make the ball 31 abut against the outer wall of the circular boss 27, push the circular boss 27, and change the position of the circular boss 27. The circular boss 27 moves synchronously with the conical block 37 through the second spring 29, the receiving plate and the touch rod 28. The conical block 37 can simultaneously push a plurality of latches 34, so that the latches 34 are embedded in the positioning groove 32, and the limit between the driving shaft 17 and the baffle 18 is completed, so that the cleaning sleeve 20 can effectively grind the inner wall of the inner ratchet groove 10 through the grinding brush 33; Through the above method, it is convenient for the staff to directly replace the cleaning sleeve 20, and it can also avoid the situation where the drive motor 7 is started by mistake, causing the cleaning sleeve 20 to rotate with the grinding brush 33 at high speed. The cleaning sleeve 20 in the high-speed rotating state is dangerous.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] 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. An inner diameter grinding device for intelligent production of bicycle hubs, characterized in that: include: A processing platform (1) and a hub (9) rotatably mounted on the processing platform (1), wherein one end of the hub (9) is provided with an inner ratchet groove (10), and a lifting cylinder (2) is fixedly arranged on the top of the processing platform (1), wherein the output end of the lifting cylinder (2) faces upward, and a fixing plate (3) is fixedly mounted on the output end of the lifting cylinder (2); Also includes: A grinding unit, the grinding unit comprising a grinding component, the grinding unit grinding the inner wall of the hub (9) through the grinding component, the grinding unit being mounted on the top of the fixing plate (3), and the grinding component being located on a side of the grinding unit facing the inner ratchet groove (10); The quick disassembly unit is used to automatically lock and unlock the grinding component.

2. The inner diameter grinding device for intelligent production of bicycle hubs according to claim 1, characterized in that: The grinding unit comprises a bearing plate (4) located directly above the fixed plate (3), and four positioning rods (6) arranged in a matrix are installed inside the bearing plate (4), the bottom of the positioning rod (6) slides through the fixed plate (3), a tension spring (5) is fixedly arranged between the fixed plate (3) and the bearing plate (4), a gear differential case (8) and a drive motor (7) are fixedly arranged on the upper end surface of the bearing plate (4), and the drive motor (7) is located on a side of the gear differential case (8) away from the hub (9), the output end of the drive motor (7) is connected to the output end of the gear differential case (8) via a coupling, the grinding component is located at the output end of the gear differential case (8), and a toggle component is also arranged between the bearing plate (4) and the fixed plate (3).

3. The inner diameter grinding device for intelligent production of bicycle hubs according to claim 2, characterized in that: The shifting component comprises four first slide grooves (15) arranged in a matrix inside the bearing plate (4), and each of the first slide grooves (15) is respectively distributed outside the four positioning rods (6), the positioning rods (6) and the first slide grooves (15) are assembled in a transverse sliding manner, and the bearing plate (4) is also equipped with a rotating shaft (12) inside for axial rotation, and the outer surface of the output end of the driving motor (7) and the upper end of the rotating shaft (12) are fixedly provided with a bevel gear (13), and the two bevel gears (13) are meshed with each other, and the outer surface of the lower end of the rotating shaft (12) is fixedly sleeved with a cam column (14), and the outer wall of the cam column (14) is slidably fitted with the fixed plate (3).

4. The inner diameter grinding device for intelligent production of bicycle hubs according to claim 2, characterized in that: The grinding component comprises a drive shaft (17) fixedly arranged at the output end of the gear differential case (8); a cleaning sleeve (20) is movably mounted on one end of the drive shaft (17) away from the gear differential case (8); and an assembly ring (19) is fixedly mounted on one end of the cleaning sleeve (20) close to the gear differential case (8); a baffle (18) is fixedly mounted on the outer surface of the drive shaft (17) for limiting the assembly ring (19); and a plurality of grinding brushes (33) are fixedly inserted on the outer surface of the cleaning sleeve (20).

5. The inner diameter grinding device for intelligent production of bicycle hubs according to claim 4, characterized in that: The quick disassembly unit comprises a second chamber (26) and a first chamber (11) which are provided inside the drive shaft (17), and the second chamber (26) is located at one end of the first chamber (11) close to the gear differential case (8). A touch rod (28) is also slidably mounted inside the drive shaft (17), and two ends of the touch rod (28) are respectively arranged inside the second chamber (26) and the first chamber (11). A circular boss (27) is axially slidably mounted between the inside of the second chamber (26) and the outer surface of the drive shaft (17). A receiving plate is fixedly arranged at one end of the touch rod (28) close to the gear differential case (8), and a second spring (29) is fixedly arranged between the receiving plate and the circular boss (27). A limiting component is arranged between the other end of the touch rod (28) and the assembly ring (19), and a touch component is also arranged between the fixing plate (3) and the circular boss (27).

6. The inner diameter grinding device for intelligent production of bicycle hubs according to claim 5, characterized in that: The limiting component comprises a conical block (37) fixedly arranged at one end of the contact rod (28) away from the gear differential case (8); a plurality of latches (34) equidistantly distributed on a circumference are slidably mounted on the inner wall of the first chamber (11); a collar (35) is fixedly mounted on the outer surface of one end of the latches (34) extending into the first chamber (11); and a third spring (36) is fixedly arranged between the end of the collar (35) away from the axis of the drive shaft (17) and the inner wall of the drive shaft (17); a plurality of positioning grooves (32) are also formed inside the assembly ring (19); and the ends of the plurality of latches (34) are movably embedded in the plurality of positioning grooves (32), and the ends of the latches (34) away from the positioning grooves (32) are slidably fitted with the outer surface of the conical block (37); and the outer diameter of the conical block (37) decreases step by step in a direction from the gear differential case (8) to the hub (9).

7. The inner diameter grinding device for intelligent production of bicycle hubs according to claim 5, characterized in that: The touch component comprises two connecting columns (22) slidably inserted into the inside of the bearing plate (4), a limit block (23) is fixedly arranged at the upper end of the connecting column (22), a sliding block (25) is slidably sleeved between the two connecting columns (22), the sliding block (25) is displaced above the driving shaft (17), and a first spring (24) is fixedly arranged between the bottom of each limit block (23) and the sliding block (25), two second sliding grooves (16) are opened inside the fixed plate (3), and the bottoms of the two connecting columns (22) are both transversely slidably mounted inside the second sliding grooves (16), an extension rod (30) is fixedly arranged at the bottom center of the sliding block (25), and a ball (31) is rotatably mounted on the exposed end of the extension rod (30), and the ball (31) is in sliding contact with the oblique arc surface of the circular boss (27).

8. The inner diameter grinding device for intelligent production of bicycle hubs according to claim 4, characterized in that: The outer surface of the cleaning sleeve (20) is provided with a thread groove (21), and the end of the cleaning sleeve (20) away from the gear differential case (8) is open.

9. The inner diameter grinding device for intelligent production of bicycle hubs according to claim 7, characterized in that: The oblique arc surface of the circular boss (27) faces the gear differential box (8).

10. A grinding method for an inner diameter grinding device for intelligent production of a bicycle hub according to any one of claims 1 to 9, characterized in that: The grinding method comprises the following steps: S1, in the debugging stage before grinding, the hub (9) is rotated and mounted on the upper end surface of the processing platform (1), and the cleaning sleeve (20) is extended into the inner ratchet groove (10), and then the fixed plate (3) is moved downward by the lifting cylinder (2). Since the cleaning sleeve (20) is stuck in the inner ratchet groove (10), the tension spring (5) can be stretched, so that the cleaning sleeve (20) is in elastic contact with the outer surface of the ratchet teeth of the inner ratchet groove (10); S2, triggering stage, when the distance between the fixed plate (3) and the bearing plate (4) increases, the round boss (27), the touch rod (28) and the conical block (37) are pushed by the ball (31), so that the limiting component limits the positional relationship between the drive shaft (17) and the cleaning sleeve (20); S3, grinding stage, the driving motor (7) and the gear differential box (8) drive the driving shaft (17) to rotate with the cleaning brush sleeve (20) at a high speed, and the cleaning brush sleeve (20) has a plurality of grinding brushes (33) distributed on the surface of the cleaning brush sleeve (20) to fully grind the inner wall of the inner ratchet groove (10), and the driving shaft (17) and the cleaning brush sleeve (20) can slide back and forth frequently horizontally against the inner wall of the inner ratchet groove (10) by moving the components, thereby improving the grinding effect.

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