Bicycle center shaft grinding equipment capable of removing scraps

By designing bicycle central axle grinding equipment with belt grinding and chip cleaning mechanisms, the existing equipment has been solved, and the existing equipment has been inefficient, limited accuracy and inconvenient metal chip handling are achieved, achieving a more efficient and safer grinding process and a healthier working environment.

CN119910546AInactive Publication Date: 2025-05-02YANCHENG JIAZHI TECH CO LTD
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Patent Information

Application Number
CN202510248777.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-04
Publication Date
2025-05-02
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing bicycle center axle grinding equipment is inefficient and has limited accuracy. The opportunity to hold the grinding for a long time leads to finger fatigue and safety hazards. The metal chips generated during the grinding process pose a threat to the environment and the health of the operator.

Method used

A bicycle central shaft grinding device including a belt grinding mechanism and a chip cleaning mechanism is designed, and a clamping mechanism of the lower V-shaped clamping seat and the upper V-shaped clamping seat is adopted. Combined with a rotating cylinder and a rotating mechanism, the rapid clamping and uniform grinding of the bicycle central shaft is realized, and metal chips are effectively collected through scrapers and collection boxes.

Benefits of technology

Improves grinding efficiency and accuracy, reduces fatigue and safety risks caused by hand-held grinders, and effectively cleans and collects metal chips, improving the working environment and the health of operators.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of bicycle center shaft machining, and discloses bicycle center shaft grinding equipment capable of removing scraps, which comprises a frame body, a workbench is fixedly connected to the top of the frame body, a vertical frame is fixedly connected to the top of the workbench, and a belt type grinding mechanism for uniformly grinding a bicycle center shaft is arranged on one side of the vertical frame. And a scrap cleaning mechanism for scraping and collecting grinding scrap iron is arranged on one side of the vertical frame. Through the V-shaped opening structures of the lower V-shaped clamping seat and the upper V-shaped clamping seat, the lower V-shaped clamping seat and the upper V-shaped clamping seat can effectively clamp bicycle center shafts of different sizes and models, and due to the fact that the multiple rollers distributed at equal intervals are arranged in the V-shaped openings of the lower V-shaped clamping seat and the upper V-shaped clamping seat, the clamping effect is good, and the clamping effect is good. The bicycle center shaft can still rotate freely after being clamped, and scrap iron generated by polishing of the bicycle center shaft and impurity scrap iron attached to the polishing belt through the scraping plate can be effectively collected through the collecting box.
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Description

Technical Field

[0001] The invention relates to the technical field of bicycle center shaft processing, in particular to a bicycle center shaft grinding device capable of removing chips. Background Art

[0002] As an environmentally friendly, convenient means of transportation and fitness equipment, bicycles are widely used in daily life and sports. The bicycle middle axis is a key component of the bicycle transmission system. It connects the left and right cranks and bears the main torque and force during riding. Its processing accuracy and surface quality directly affect the performance and riding experience of the bicycle.

[0003] In the manufacturing process of bicycle middle shaft, grinding is an important process, the purpose of grinding is to remove burrs, oxide layers and processing marks on the end of the middle shaft. However, there are some problems that need to be solved in the existing grinding of bicycle middle shaft.

[0004] 1. At present, grinding workers usually use hand-held grinders to grind, which is not only inefficient, but also has limited grinding accuracy. In addition, when holding the grinder for a long time, fingers will inevitably become fatigued, which is prone to danger; 2. During grinding, a lot of metal chips will be generated in the grinding area, which not only pollutes the working environment, but also makes subsequent cleaning more difficult and endangers the health of the operator. Summary of the invention

[0005] Technical issues solved In view of the deficiencies in the prior art, the present invention provides a bicycle axle grinding device with chip removal, mainly to solve the problem that currently grinding workers usually use hand-held grinders to grind, which is not only inefficient and has limited grinding accuracy, but also inevitably causes fatigue of fingers when holding the grinder for a long time, which is prone to danger; and when grinding, a large amount of metal chips will be generated at the grinding site, which not only pollutes the working environment, but also makes subsequent cleaning difficult and endangers the health of the operator.

[0006] Technical Solution To achieve the above object, the present invention provides the following technical solutions: A bicycle center axle grinding equipment with chip removal comprises a frame, a workbench is fixedly connected to the top of the frame, a vertical frame is fixedly connected to the top of the workbench, a belt grinding mechanism for uniformly grinding the bicycle center axle is provided on one side of the vertical frame, a chip cleaning mechanism for scraping and collecting grinding iron chips is provided on one side of the vertical frame, a mounting frame is fixedly connected to the top of the workbench, two transverse guide rails are fixedly connected to the top of the mounting frame, a transverse moving plate is slidably connected between the two transverse guide rails via a slide, an upper bracket is fixedly connected to the top of the transverse moving plate, a rotating cylinder is fixedly connected to the top of the upper bracket, a clamping mechanism for quickly clamping the bicycle center axle is provided at one end of the rotating shaft of the rotating cylinder, a driving component for driving the transverse moving plate to move is provided on the top of the mounting frame, and a rotating mechanism for driving the bicycle center axle to rotate and grind is provided on one side of the upper bracket.

[0007] As a further solution of the present invention, the clamping mechanism includes a lower V-shaped clamp seat and an upper V-shaped clamp seat, the interior of the lower V-shaped clamp seat is provided with an avoidance groove for avoiding the upper V-shaped clamp seat, both ends of the upper V-shaped clamp seat are fixedly connected with fixing columns, the bottom of the lower V-shaped clamp seat is fixedly connected with two clamping cylinders, and one end of the clamping cylinder passes through the lower V-shaped clamp seat and is fixed to the fixing column.

[0008] As a further solution of the present invention, a plurality of equally spaced mounting grooves are provided in the V-shaped openings of the lower V-shaped clamp seat and the upper V-shaped clamp seat, and rollers are rotatably connected in the mounting grooves.

[0009] As a further solution of the present invention, the rotating mechanism includes a vertically movable plate, which is installed on one side of the upper bracket through an up and down movable assembly, and the top of the vertically movable plate is fixedly connected to two vertical fixed seats, and the insides of the two vertical fixed seats are fixedly connected to guide rods, and a slide seat is slidably connected between the two guide rods, and one side of the slide seat is fixedly connected to a rotating motor, and one end of the output shaft of the rotating motor passes through the slide seat and is fixedly connected to an extrusion plate, and the end face of the extrusion plate is an annular embedded step structure that can adapt to the outer diameters of the middle axles of bicycles of different sizes, and the annular embedded step structure is provided with rubber rings for the outer diameters of the middle axles of bicycles of different sizes, and one side of the two guide rods is sleeved with a spring, and the two ends of the spring are respectively in contact with the slide seat and the vertical fixed seat.

[0010] As a further solution of the present invention, the up and down moving assembly includes two vertical guide rails, both of which are fixedly connected to one side of the upper bracket, and both of the vertical guide rails are slidably connected to the vertical movable plate through a slide, and a vertical servo electric cylinder is fixedly connected to the top inner wall of the upper bracket, and one end of the vertical servo electric cylinder is fixed to the vertical movable plate.

[0011] As a further solution of the present invention, the driving component is a transverse servo electric cylinder, the transverse servo electric cylinder is fixedly connected to the top of the mounting frame, and one end of the transverse servo electric cylinder is fixed to the transverse moving plate.

[0012] As a further solution of the present invention, the belt grinding mechanism includes two transmission rollers, both of which are rotatably connected to the inside of the vertical frame through bearings, and the two transmission rollers are connected by a grinding belt transmission, one end of one of the transmission rollers passes through the vertical frame and is fixedly connected to a driven pulley, a grinding motor is fixedly connected to the inside of the frame, one end of the output shaft of the grinding motor is fixedly connected to a driving pulley, and the driving pulley and the driven pulley are connected by a belt transmission.

[0013] As a further solution of the present invention, the chip cleaning mechanism includes a side bracket, which is fixedly connected to both sides of the vertical frame, a scraper is fixedly connected between the two sides of the side bracket, and the scraper is in contact with the grinding belt, and a collection box is fixedly connected to the end of the side bracket, and the collection box is located below the scraper.

[0014] Beneficial Effects Compared with the prior art, the present invention provides a bicycle axle grinding device capable of removing chips, which has the following beneficial effects: 1. The present invention uses the V-shaped opening structure of the lower V-shaped clamp seat and the upper V-shaped clamp seat to effectively clamp the bicycle middle shaft of different sizes and models. Since the V-shaped openings of the lower V-shaped clamp seat and the upper V-shaped clamp seat are provided with a plurality of rollers distributed at equal distances, the bicycle middle shaft can still rotate freely after clamping.

[0015] 2. The present invention arranges a rotating cylinder to rotate the rotating cylinder 180 degrees, thereby realizing the position exchange of the two ends of the bicycle center shaft, and further making the other end of the bicycle center shaft also fully and evenly polished.

[0016] 3. The collecting box of the present invention is located below the grinding position of the scraper and the bicycle center shaft, so the iron filings generated by the grinding of the bicycle center shaft and the impurity iron filings attached to the grinding belt removed by the scraper can be effectively collected.

[0017] 4. The present invention drives the vertical moving plate to move along the vertical guide rail through the vertical servo electric cylinder, and makes the center line of the extrusion plate coincide with the center line of the bicycle center axis after clamping, so that the extrusion plate can drive the bicycle center axis to rotate through the annular embedded step structure and the rubber ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front three-dimensional structure of a bicycle middle axle grinding device capable of removing chips proposed by the present invention; Figure 2A schematic diagram of the scraper structure of a bicycle middle axle grinding device capable of removing chips proposed by the present invention; Figure 3 A bicycle middle shaft grinding device capable of removing chips proposed by the present invention Figure 1 A schematic diagram of a local enlarged structure; Figure 4 This is a schematic structural diagram of a rotating mechanism of a bicycle middle axle grinding device capable of removing chips proposed by the present invention; Figure 5 The present invention provides a schematic structural diagram of a clamping mechanism for a bicycle center axle grinding device capable of removing chips.

[0019] In the figure: 1. driving roller; 2. side bracket; 3. vertical frame; 4. driven pulley; 5. driving pulley; 6. grinding motor; 7. frame; 8. workbench; 9. mounting frame; 10. grinding belt; 11. scraper; 12. collecting box; 13. clamping mechanism; 14. rotating cylinder; 15. upper bracket; 16. horizontal guide rail; 17. horizontal moving plate; 18. horizontal servo electric cylinder; 19. vertical moving plate; 20. vertical guide rail; 21. extrusion plate; 2101. rubber ring; 2102. vertical servo electric cylinder; 22. rotating motor; 23. slide seat; 24. guide rod; 25. spring; 26. vertical fixed seat; 27. fixed column; 28. avoidance groove; 29. ​​lower V-shaped clamp seat; 30. upper V-shaped clamp seat; 31. roller; 32. mounting groove; 33. clamping cylinder. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] Reference Figure 1-Figure 5 A bicycle center shaft grinding device capable of removing chips comprises a frame body 7, a workbench 8 is fixed to the top of the frame body 7 by bolts, a stand 3 is fixed to the top of the workbench 8 by bolts, a belt grinding mechanism for uniformly grinding the bicycle center shaft is provided on one side of the stand 3, a chip cleaning mechanism for scraping and collecting grinding iron chips is provided on one side of the stand 3, a mounting frame 9 is fixed to the top of the workbench 8 by bolts, two transverse guide rails 16 are fixed to the top of the mounting frame 9 by bolts, a transverse moving plate 17 is slidably connected between the two transverse guide rails 16 by a slide, an upper bracket 15 is fixed to the top of the transverse moving plate 17 by bolts, and the top of the upper bracket 15 A rotating cylinder 14 is fixed by bolts, and one end of the rotating shaft of the rotating cylinder 14 is provided with a clamping mechanism 13 for quickly clamping the bicycle center axis. A driving component for driving the lateral moving plate 17 to move is provided on the top of the mounting frame 9, and the driving component is a lateral servo electric cylinder 18. The lateral servo electric cylinder 18 is fixed to the top of the mounting frame 9 by bolts, and one end of the lateral servo electric cylinder 18 is fixed to the lateral moving plate 17. A rotating mechanism for driving the bicycle center axis for self-rotation grinding is provided on one side of the upper bracket 15, so that both ends of the bicycle center axis can be fully and evenly ground, and the iron filings generated during the grinding process can be scraped and collected.

[0024] The clamping mechanism 13 of the present invention comprises a lower V-shaped clamp seat 29 and an upper V-shaped clamp seat 30. The lower V-shaped clamp seat 29 is provided with an avoidance groove 28 for avoiding the upper V-shaped clamp seat 30. Both ends of the upper V-shaped clamp seat 30 are welded with fixing columns 27. The bottom of the lower V-shaped clamp seat 29 is fixed with two clamping cylinders 33 by bolts, and one end of the clamping cylinder 33 passes through the lower V-shaped clamp seat 29 and is fixed to the fixing column 27. The V-shaped openings of the lower V-shaped clamp seat 29 and the upper V-shaped clamp seat 30 are provided with a plurality of mounting grooves 32 distributed at equal distances. A roller 31 is rotatably connected in the mounting groove 32. The roller 31 is rotated in the mounting groove 32. 9 and the V-shaped opening structure of the upper V-shaped clamp seat 30, so that the lower V-shaped clamp seat 29 and the upper V-shaped clamp seat 30 can effectively clamp the bicycle middle shaft of different sizes and models. Therefore, when clamping, it is only necessary to place the bicycle middle shaft between the lower V-shaped clamp seat 29 and the upper V-shaped clamp seat 30, and then start the clamping cylinder 33 to drive the upper V-shaped clamp seat 30 to move downward and press the bicycle middle shaft. Since the V-shaped openings of the lower V-shaped clamp seat 29 and the upper V-shaped clamp seat 30 are provided with multiple equidistantly distributed rollers 31, the bicycle middle shaft can still rotate freely after clamping.

[0025] The rotating mechanism in the present invention comprises a vertical moving plate 19, which is installed on one side of the upper bracket 15 through an up-and-down moving assembly. Two vertical fixing seats 26 are fixed to the top of the vertical moving plate 19 by bolts. Guide rods 24 are fixed to the inside of the two vertical fixing seats 26 by bolts. A slide seat 23 is slidably connected between the two guide rods 24. A rotating motor 22 is fixed to one side of the slide seat 23 by bolts. One end of the output shaft of the rotating motor 22 passes through the slide seat 23 and is fixed to an extrusion plate 21 by bolts. The end face of the extrusion plate 21 is a ring-shaped embedded stepped structure adapted to the outer diameter of the middle shaft of bicycles of different sizes. The annular embedded stepped structure is provided with a rubber ring 2101 for the outer diameter of the middle shaft of bicycles of different sizes. One side of the two guide rods 24 is sleeved with a spring 25, and the two ends of the spring 25 are respectively in contact with the slide seat 23 and the vertical fixed seat 26. The up and down moving components include two vertical guide rails 20, and the two vertical guide rails 20 are fixed to one side of the upper bracket 15 by bolts. The two vertical guide rails 20 are slidably connected to the vertical moving plate 19 through the slide. The top inner wall of the upper bracket 15 is fixed with a vertical servo electric cylinder 2102 by bolts, and one end of the vertical servo electric cylinder 2102 is fixed to the vertical moving plate 19, and the vertical servo electric cylinder 2102 is fixed to the vertical moving plate 19 by the vertical servo electric cylinder 2102. The vertical servo electric cylinder 2102 is started to drive the vertical moving plate 19 to move along the vertical guide rail 20, and the center line of the extrusion plate 21 coincides with the center line of the bicycle center axis after clamping. Then the transverse servo electric cylinder 18 is started. The transverse servo electric cylinder 18 is extended to drive the transverse moving plate 17 to move along the transverse guide rail 16, and one end of the bicycle center axis clamped by the clamping mechanism 13 on the rotating cylinder 14 is contacted with the belt grinding mechanism. At this time, the clamping mechanism 13 is in a micro-clamping state, and then the bicycle center axis is blocked from moving backward and contacts the extrusion plate 21. At this time, under the elastic force of the spring 25, the extrusion plate 21 passes through the annular inner The embedded step structure is sleeved on the outer diameter of the bicycle center shaft and generates friction with the bicycle center shaft through the rubber ring 2101. Therefore, by starting the rotating motor 22, the rotating motor 22 rotates through the extrusion disk 21 to drive the bicycle center shaft to rotate. After the grinding of one end of the bicycle center shaft is completed, the transverse servo electric cylinder 18 can be shortened to drive the transverse moving plate 17 to move outward and reset, and the end of the bicycle center shaft is separated from the annular embedded step structure of the extrusion disk 21. Then, by starting the rotating cylinder 14, the rotating cylinder 14 rotates 180°, and the above action is repeated, so that the other end of the bicycle center shaft can also be fully and evenly ground.

[0026] The belt grinding mechanism of the present invention comprises two transmission rollers 1, both of which are rotatably connected to the inside of the vertical frame 3 through bearings, and the two transmission rollers 1 are connected by a grinding belt 10, one end of one of the transmission rollers 1 passes through the vertical frame 3 and is keyed to a driven pulley 4, a grinding motor 6 is fixed to the inside of the frame body 7 by bolts, one end of the output shaft of the grinding motor 6 is keyed to a driving pulley 5, and the driving pulley 5 is connected to the driven pulley 4 by a belt transmission, and the chip cleaning mechanism comprises a side bracket 2, the side bracket 2 is fixed to both sides of the vertical frame 3 by bolts, a scraper 11 is fixed between the two sides of the side bracket 2 by bolts, and the scraper 11 is in contact with the grinding belt 10, and a collecting box 12 is fixed to the end of the side bracket 2 by bolts, and the collecting box 12 is located below the scraper 11. By starting the grinding motor 6, the grinding motor 6 rotates to make the active pulley 5 drive the driven pulley 4 to rotate, and the driven pulley 4 rotates to drive the two transmission rollers 1 and the grinding belt 10 to perform the grinding operation, and the impurities attached to the grinding belt 10 can be scraped and cleaned by the scraper 11. Since the collecting box 12 is located below the scraper 11 and the grinding position of the bicycle middle shaft, the iron filings generated by the grinding of the bicycle middle shaft and the impurity iron filings attached to the grinding belt 10 removed by the scraper 11 can be effectively collected.

[0027] The present invention is divided into the following steps when used: S1: When clamping, the bicycle middle shaft only needs to be placed between the lower V-shaped clamp seat 29 and the upper V-shaped clamp seat 30, and then the clamping cylinder 33 is activated to drive the upper V-shaped clamp seat 30 to move downward and press the bicycle middle shaft. Since the V-shaped openings of the lower V-shaped clamp seat 29 and the upper V-shaped clamp seat 30 are provided with a plurality of rollers 31 distributed at equal distances, the bicycle middle shaft can still rotate freely after clamping. S2: Start the grinding motor 6, the grinding motor 6 rotates to make the driving pulley 5 drive the driven pulley 4 to rotate, and the driven pulley 4 rotates to drive the two transmission rollers 1 and the grinding belt 10 to perform grinding operation; S3: Then, the vertical servo electric cylinder 2102 is started to drive the vertical moving plate 19 to move along the vertical guide rail 20, and the center line of the extrusion plate 21 coincides with the center line of the clamped bicycle axle, and then the transverse servo electric cylinder 18 is started. The transverse servo electric cylinder 18 extends to drive the transverse moving plate 17 to move along the transverse guide rail 16, and one end of the bicycle axle clamped by the clamping mechanism 13 on the rotary cylinder 14 contacts the belt grinding mechanism. At this time, the clamping mechanism 13 is in a micro-clamping state; S4: As the bicycle middle shaft is blocked from moving backward and contacts the extrusion plate 21, under the elastic force of the spring 25, the extrusion plate 21 is sleeved on the outer diameter of the bicycle middle shaft through the annular embedded stepped structure and generates friction with the bicycle middle shaft through the rubber ring 2101. Therefore, by starting the rotating motor 22, the rotating motor 22 rotates and drives the bicycle middle shaft to rotate through the extrusion plate 21, thereby achieving sufficient and uniform grinding of the end of the bicycle middle shaft; S5: After the grinding of one end of the bicycle center shaft is completed, the lateral servo electric cylinder 18 can be shortened to drive the lateral moving plate 17 to move outward and reset, so that the end of the bicycle center shaft is separated from the annular embedded stepped structure of the extrusion plate 21, and then the rotating cylinder 14 is started, and the rotating cylinder 14 is rotated 180°, and the above action is repeated, so that the other end of the bicycle center shaft is also fully and evenly ground; S6: The impurities attached to the grinding belt 10 can be scraped and cleaned by the scraper 11, and because the collection box 12 is located below the scraper 11 and the grinding position of the bicycle middle shaft, the iron filings generated by the grinding of the bicycle middle shaft and the impurity iron filings attached to the grinding belt 10 removed by the scraper 11 can be effectively collected.

[0028] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0029] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A bicycle axle grinding device capable of removing chips, comprising a frame (7), the top of which is fixedly connected to a workbench (8), characterized in that: The top of the workbench (8) is fixedly connected to a stand (3), one side of the stand (3) is provided with a belt grinding mechanism for uniformly grinding the bicycle center axis, one side of the stand (3) is provided with a chip cleaning mechanism for scraping and collecting grinding iron chips, the top of the workbench (8) is fixedly connected to a mounting frame (9), the top of the mounting frame (9) is fixedly connected to two transverse guide rails (16), a transverse moving plate (17) is slidably connected between the two transverse guide rails (16) via a slide, the top of the transverse moving plate (17) is fixedly connected to an upper bracket (15), the top of the upper bracket (15) is fixedly connected to a rotating cylinder (14), one end of the rotating shaft of the rotating cylinder (14) is provided with a clamping mechanism (13) for quickly clamping the bicycle center axis, the top of the mounting frame (9) is provided with a driving component for driving the transverse moving plate (17) to move, and one side of the upper bracket (15) is provided with a rotating mechanism for driving the bicycle center axis to perform self-rotation grinding.

2. A bicycle axle grinding device capable of removing chips according to claim 1, characterized in that: The clamping mechanism (13) comprises a lower V-shaped clamping seat (29) and an upper V-shaped clamping seat (30); a clearance groove (28) for avoiding the upper V-shaped clamping seat (30) is provided inside the lower V-shaped clamping seat (29); both ends of the upper V-shaped clamping seat (30) are fixedly connected to fixed columns (27); the bottom of the lower V-shaped clamping seat (29) is fixedly connected to two clamping cylinders (33); one end of the clamping cylinder (33) passes through the lower V-shaped clamping seat (29) and is fixed to the fixed column (27).

3. A bicycle axle grinding device capable of removing chips according to claim 2, characterized in that: The V-shaped openings of the lower V-shaped clamp seat (29) and the upper V-shaped clamp seat (30) are both provided with a plurality of mounting grooves (32) distributed at equal distances, and rollers (31) are rotatably connected in the mounting grooves (32).

4. A bicycle axle grinding device capable of removing chips according to claim 1, characterized in that: The rotating mechanism comprises a vertical movable plate (19), which is mounted on one side of the upper bracket (15) via an up-and-down movable assembly; the top of the vertical movable plate (19) is fixedly connected to two vertical fixed seats (26); the interiors of the two vertical fixed seats (26) are fixedly connected to guide rods (24); a slide seat (23) is slidably connected between the two guide rods (24); one side of the slide seat (23) is fixedly connected to a rotating motor (22); one end of an output shaft of the rotating motor (22) passes through the slide seat (23) and is fixedly connected to an extrusion plate (21); the end surface of the extrusion plate (21) is an annular embedded stepped structure adapted to the outer diameters of bicycle middle shafts of different sizes; a rubber ring (2101) adapted to the outer diameters of bicycle middle shafts of different sizes is arranged in the annular embedded stepped structure; one side of the two guide rods (24) is sleeved with a spring (25), and the two ends of the spring (25) are respectively in contact with the slide seat (23) and the vertical fixed seat (26).

5. A bicycle axle grinding device capable of removing chips according to claim 4, characterized in that: The up-and-down moving assembly comprises two vertical guide rails (20), the two vertical guide rails (20) are both fixedly connected to one side of the upper bracket (15), the two vertical guide rails (20) are both slidably connected to the vertical moving plate (19) via a slide, a vertical servo electric cylinder (2102) is fixedly connected to the top inner wall of the upper bracket (15), and one end of the vertical servo electric cylinder (2102) is fixed to the vertical moving plate (19).

6. A bicycle axle grinding device capable of removing chips according to claim 1, characterized in that: The driving component is a transverse servo electric cylinder (18), the transverse servo electric cylinder (18) is fixedly connected to the top of the mounting frame (9), and one end of the transverse servo electric cylinder (18) is fixed to the transverse moving plate (17).

7. A bicycle axle grinding device capable of removing chips according to claim 1, characterized in that: The belt-type grinding mechanism comprises two transmission rollers (1), both of which are rotatably connected to the inside of a stand (3) via bearings, and the two transmission rollers (1) are connected to each other via a grinding belt (10), one end of one of the transmission rollers (1) passes through the stand (3) and is fixedly connected to a driven pulley (4), a grinding motor (6) is fixedly connected to the inside of the frame (7), one end of the output shaft of the grinding motor (6) is fixedly connected to a driving pulley (5), and the driving pulley (5) and the driven pulley (4) are connected via a belt transmission.

8. A bicycle axle grinding device capable of removing chips according to claim 7, characterized in that: The chip cleaning mechanism comprises a side bracket (2), the side bracket (2) being fixedly connected to two sides of the vertical bracket (3), a scraper (11) being fixedly connected between the two sides of the side bracket (2), and the scraper (11) being in contact with the grinding belt (10), and a collection box (12) being fixedly connected to the end of the side bracket (2), and the collection box (12) being located below the scraper (11).