Milling machine for end face of graphitized furnace end block

Abstract

The utility model relates to the technical field of milling machines, and discloses a graphitization furnace end block end face milling machine which comprises a machining table, the bottom of the machining table is fixedly connected with a transmission assembly providing rotation capacity, the outer portion of the transmission assembly is fixedly connected with two first fixing shafts, and the outer portions of the first fixing shafts are rotationally connected with first connecting rods. The inner wall of the first connecting rod is rotationally connected with a second fixing shaft, the outer portion of the second fixing shaft is fixedly connected with a second connecting rod, the inner wall of the second connecting rod is fixedly connected with a third fixing shaft, the top of the third fixing shaft is fixedly connected with a first clamping plate, and two sliding grooves are formed in the inner wall of the bottom of the machining table. According to the structure, the effect of freely adjusting the size of the processed raw materials is achieved, the practicability of the device is improved, the damage rate of the raw materials in the processing process is reduced, the processing quality is improved, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of milling machines, in particular to an end face milling machine for a graphitization furnace head block. Background Technique

[0002] The end face milling machine for a graphitization furnace head block is a mechanical device specifically used for processing the graphitization furnace head block. Its main function is to mill the end face of the furnace head block to ensure its surface flatness and dimensional accuracy, so as to meet the subsequent processing and use requirements. The graphitization furnace head block milling machine is widely used in industries such as electric power, metallurgy, and chemical industry, especially in the production of electrode materials that require high temperature and high electrical conductivity. Through precise processing, the stability and electrical conductivity of the graphite electrode at high temperature are ensured.

[0003] In the prior art, some devices fix the graphitization furnace head block through a fixture, but traditional milling machine equipment generally has the problem of inconvenient fixture adjustment. These devices usually adopt fixed fixtures and cannot be flexibly adjusted according to graphitization furnace head blocks of different specifications, resulting in the inability to effectively adapt to workpieces of various sizes during the processing process. This not only increases the time cost of setting up and replacing the fixture, but also may affect the processing accuracy, reduce the production efficiency, and increase the processing cost. In addition, the fixed fixture is prone to causing deformation or damage to the workpiece during the clamping process, thus affecting the quality of the final product. Therefore, an end face milling machine for a graphitization furnace head block is proposed. Summary of the Utility Model

[0004] The end face milling machine for a graphitization furnace head block proposed by the utility model aims to improve the problems of inconvenient fixture adjustment, affecting work efficiency, and the quality of the processed material not meeting the standard in the prior art.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] The end face milling machine for a graphitization furnace head block includes a processing table. A transmission component providing rotational ability is fixedly connected to the bottom of the processing table. Two first fixed shafts are fixedly connected to the outside of the transmission component. A first connecting rod is rotatably connected to the outside of the first fixed shaft. A second fixed shaft is rotatably connected to the inner wall of the first connecting rod. A second connecting rod is fixedly connected to the outside of the second fixed shaft. A third fixed shaft is fixedly connected to the inner wall of the second connecting rod. A first clamping plate is fixedly connected to the top of the third fixed shaft. Two sliding grooves are provided in the inner wall of the bottom of the processing table.

[0007] In the above technical solution, the device realizes efficient power transmission and flexible motion control through a transmission component provided with multiple fixed shafts and connecting rods. The design of the first, second, and third fixed shafts enhances the overall structural stability and ensures accurate positioning during the machining process. The setting of the sliding groove enables the machining table to move smoothly during operation, improving the work efficiency and machining accuracy, adapting to workpieces of different sizes, and enhancing the versatility and adaptability of the equipment.

[0008] As a further description of the above technical solution:

[0009] The transmission component includes a motor. The top of the motor is fixedly connected to the bottom of the machining table. The output end of the motor is fixedly connected to a drive shaft, and a rotating plate is fixedly connected to the outside of the drive shaft.

[0010] In the above technical solution, the transmission component is driven by a motor, ensuring the efficient operation and stable performance of the milling machine. The motor is fixed at the bottom of the machining table, saving space and reducing the center of gravity, enhancing the overall stability. The connection between the drive shaft and the rotating plate realizes direct power transmission, improving the response speed and machining accuracy. The design of the rotating plate enables the tool or workpiece to adjust the angle flexibly, adapting to various machining requirements, and further improving the versatility and machining efficiency of the equipment.

[0011] As a further description of the above technical solution:

[0012] A plurality of feet are fixedly connected to the bottom of the machining table. A circular groove is provided in the inner wall of the machining table, and a first protective shell is fixedly connected to the rear side of the outside of the machining table.

[0013] In the above technical solution, the design of a plurality of feet enhances the stability and seismic resistance of the machining table, ensuring that it is not prone to tilting or moving during high-load machining. The circular groove in the inner wall provides additional support, facilitating installation and disassembly, and improving the maintenance efficiency. At the same time, the setting of the first protective shell effectively prevents the collision of external objects and the intrusion of dust, extends the service life of the equipment, ensures safe operation, and improves the safety and cleanliness of the overall working environment.

[0014] As a further description of the above technical solution:

[0015] A top plate is fixedly connected to the top of the first protective shell. A top plate is fixedly connected to the top of the first protective shell. A fixed plate is fixedly connected to the inner wall of the first protective shell, and a water storage tank is fixedly connected to the top of the fixed plate.

[0016] In the above technical solution, the design of the first protective case effectively enhances the safety and durability of the device. The fixed connection between the top plate and the fixed plate provides additional structural support to ensure the stability of the internal components. The setting of the water storage tank not only provides the necessary cooling or lubrication function for the device, but also can supply water quickly when needed, improving the continuity and efficiency of operation. In addition, the sealing of the overall structure helps prevent external pollutants from invading and extends the service life of the device.

[0017] As a further description of the above technical solution:

[0018] A water pipe head is fixedly connected to the inner wall of the water storage tank. A telescopic component providing synchronous lifting ability is fixedly connected to the bottom of the top plate. A cylinder two is fixedly connected to the inner wall of the telescopic component. A connecting plate one is fixedly connected to the output end of the cylinder two. An electrical box is fixedly connected to the front side of the connecting plate one. Sliding plates are fixedly connected to both the left and right sides of the electrical box.

[0019] In the above technical solution, the design of the water pipe head on the inner wall of the water storage tank ensures the efficient delivery of the coolant and improves the cooling effect during the processing. The synchronous lifting ability provided by the telescopic component makes the device adjustment more flexible to adapt to different processing requirements. The application of the cylinder two enhances the automation degree of the system, improving the convenience and safety of operation. The electrical box on the connecting plate one integrates the control system for convenient centralized management. At the same time, the design of the sliding plates facilitates the movement and positioning of the device, improving the overall working efficiency and flexibility.

[0020] As a further description of the above technical solution:

[0021] The telescopic component includes a cylinder one. The top of the cylinder one is fixedly connected to the bottom of the top plate. The output end of the cylinder one is fixedly connected to an outer shell two.

[0022] In the above technical solution, the setting of the cylinder one enhances the stability and reliability of the telescopic component, ensuring the efficient connection between the top plate and the outer shell two. The design of the outer shell two can effectively protect the internal components and prevent damage to the device caused by the external environment. At the same time, the control system of the cylinder one allows precise adjustment of the position of the outer shell two, improving the flexibility and adaptability of operation, meeting the requirements of different working scenarios, and further optimizing the overall performance and service life of the device.

[0023] As a further description of the above technical solution:

[0024] A cutting component providing rotational ability is fixedly connected to the front side of the connecting plate one. Two fixed blocks are fixedly connected to the front side of the first protective case.

[0025] In the above technical solution, the design of the cutting assembly enables the connecting plate to have flexible rotation ability, capable of performing efficient cutting at different angles, improving the processing accuracy and efficiency. The two fixing blocks on the front side of the protective shell ensure the stable fixation of the cutting assembly during operation, reducing the risks of vibration and displacement, and enhancing safety. This structure not only improves the overall stability of the equipment, but also facilitates the maintenance and replacement of cutting tools, prolongs the service life of the equipment, and enhances the user experience.

[0026] As a further description of the above technical solution:

[0027] The cutting assembly includes an electric box, the output end of the electric box is fixedly connected with a first rotating shaft, the outer parts of two sliding plates are slidably connected to the inner walls of the two fixing blocks, the front side of the first rotating shaft is detachably connected with a second rotating shaft, two clamping plates two are detachably connected to the outer part of the first rotating shaft, the inner wall of the clamping plate two is detachably connected with the second rotating shaft, a grinding disc is fixedly connected to the outer part of the second rotating shaft, a plurality of clamping holes are formed in the inner walls of the first rotating shaft and the second rotating shaft, a plurality of fixing columns are slidably connected to the outer parts of the two clamping plates two, two clamping plates two are fixedly connected to the outer parts of the plurality of fixing columns, two connecting plates two are fixedly connected to the left and right sides of the two clamping plates two, a connecting shaft is slidably connected to the inner wall of the two connecting plates two, and two fixing rings are threadedly connected to the outer part of the connecting shaft.

[0028] In the above technical solution, the cutting assembly improves the cutting and grinding efficiency through precise structural design. The detachable connection design of the first rotating shaft and the second rotating shaft facilitates replacement and maintenance, enhancing the flexibility of the equipment. The setting of a plurality of clamping holes and fixing columns makes the workpiece clamping more stable, ensuring safety and stability during the cutting process. In addition, the sliding connection design helps to achieve fine adjustment, improving the operation convenience and accuracy, and meeting the processing requirements of workpieces of different specifications.

[0029] The utility model has the following beneficial effects:

[0030] 1. In the utility model, the motor drives the rotating plate connected to the driving shaft to rotate, the rotating plate drives the first connecting rod connected to the first fixed shaft to rotate, the first connecting rod is rotatably connected to the second fixed shaft, so the second fixed shaft drives the second connecting rod to perform reciprocating motion under the action of the sliding groove. This structure realizes the effect of freely adjusting the size of the processing raw material, improves the practicability of the device, reduces the damage rate of the raw material during processing, improves the processing quality, and saves costs.

[0031] 2. In the present utility model, the clamping plate two is disassembled by rotating the fixed ring, and a suitable grinding disc is replaced. The fixed column is fixed on the inner wall of the clamping plate two, aligned with the clamping hole and embedded for fixation. The fixed ring is twisted to connect the rotating shaft one and the rotating shaft two. The cylinder one connected to the bottom of the top plate is started to drive the grinding disc to move longitudinally back and forth, and then the cylinder two is started to move horizontally back and forth. This structure achieves the effect of avoiding the inconvenience during the replacement of the processing tool, improves the convenience of replacing the processing tool of the device, and the modular disassembly design enables the replacement of the processing tool without replacing the entire component. Also, different processing tools can be replaced according to the processing raw materials, which improves the flexibility during the replacement of components and maintenance, and reduces the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 FIG. 6 is a perspective view of the end face milling machine for graphite furnace head blocks proposed by the present utility model;

[0033] Figure 2 FIG. 10 is a sectional view of the processing table structure of the end face milling machine for graphite furnace head blocks proposed by the present utility model;

[0034] Figure 3 FIG. 14 is a sectional view of the protective shell one structure of the end face milling machine for graphite furnace head blocks proposed by the present utility model;

[0035] Figure 4 FIG. 18 is a schematic diagram of the grinding disc structure of the end face milling machine for graphite furnace head blocks proposed by the present utility model;

[0036] Figure 5 is Figure 1 an enlarged view of part A in

[0037] Figure 6 FIG. 28 is a sectional view of the outer shell two structure of the end face milling machine for graphite furnace head blocks proposed by the present utility model.

[0038] LEGEND DESCRIPTION:

[0039] 1. Processing table; 2. Motor; 3. Driving shaft; 4. Rotating plate; 5. Fixed shaft one; 6. Connecting rod one; 7. Fixed shaft two; 8. Connecting rod two; 9. Fixed shaft three; 10. Clamping plate one; 11. Sliding groove; 12. Foot; 13. Circular groove; 14. Protective shell one; 15. Top plate; 16. Fixed plate; 17. Water storage tank; 18. Water pipe head; 19. Cylinder one; 20. Outer shell two; 21. Cylinder two; 22. Connecting plate one; 23. Electric box; 24. Sliding plate; 25. Rotating shaft one; 26. Clamping hole; 27. Clamping plate two; 28. Fixed column; 29. Rotating shaft two; 30. Grinding disc; 31. Fixed block; 32. Connecting plate two; 33. Connecting shaft; 34. Fixed ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0041] Referring to Figure 1 and Figure 2 , an embodiment provided by the present utility model: an end face milling machine for a graphitized furnace head block, including a processing table 1. The processing table 1 is the core working platform of the entire milling machine, responsible for supporting and positioning the graphitized furnace head block to be processed. A transmission component providing rotational ability is fixedly connected to the bottom of the processing table 1. The transmission component provides rotational ability for the processing table 1, enabling the clamping plate 10 to be clamped according to the size of the raw material. Two fixing shafts 1 5 are fixedly connected to the outside of the transmission component. The fixing shaft 1 5, as a key part of the transmission component, is responsible for connecting the transmission component and the connecting rod 1 6. The connecting rod 1 6 is rotatably connected to the outside of the fixing shaft 1 5. The connecting rod 1 6 connects the fixing shaft 1 5 and the fixing shaft 2 7, playing a role in transmitting rotational force. The fixing shaft 2 7 is rotatably connected to the inner wall of the connecting rod 1 6. The fixing shaft 2 7 is responsible for supporting the rotation between the connecting rod 1 6 and the connecting rod 2 8. The connecting rod 2 8 is fixedly connected to the outside of the fixing shaft 2 7. The connecting rod 2 8 connects the fixing shaft 2 7 and the fixing shaft 3 9, further transmitting rotational force. The fixing shaft 3 9 is fixedly connected to the inner wall of the connecting rod 2 8. The top of the fixing shaft 3 9 is fixedly connected to the clamping plate 10, which is the last rotational connection of the entire milling system. The top of the fixing shaft 3 9 is fixedly connected to the clamping plate 10. The clamping plate 10 is used to fix the graphitized furnace head block to be processed, ensuring that the material does not move during the milling process. Two sliding grooves 11 are opened in the inner wall of the bottom of the processing table 1. The sliding grooves 11 are opened in the inner wall of the bottom of the processing table 1, providing a guiding and sliding space for the connecting rod and the fixing shaft during rotation.

[0042] Referring to Figure 2 and Figure 3 and Figure 6, the transmission assembly includes a motor 2. The motor 2 is the core power source of the transmission assembly and is responsible for driving the operation of the entire system. The top of the motor 2 is fixedly connected to the bottom of the processing table 1. The output end of the motor 2 is fixedly connected with a drive shaft 3, which is used to transmit the rotational power of the motor 2 to the rotating plate 4. Its design should have good strength and rigidity to withstand the torque generated during the processing. The outside of the drive shaft 3 is fixedly connected with a rotating plate 4, which is responsible for converting the power of the drive shaft 3 into the rotational movement of the processing table 1. The bottom of the processing table 1 is fixedly connected with a plurality of feet 12, which are used to support the processing table 1, provide a stable foundation, and ensure that the equipment is not easily toppled or moved during operation. A circular groove 13 is opened on the inner wall of the processing table 1. The circular groove 13 is opened on the inner wall of the processing table 1 and is mainly used for guiding and installing other components. A protective shell 14 is fixedly connected to the outer rear side of the processing table 1, which is used to protect the internal components from the external environment, such as dust, liquid, etc. The top of the protective shell 14 is fixedly connected with a top plate 15. The top plate 15 is the upper cover of the protective shell, provides additional protection, and fixes other upper components. The top of the protective shell 14 is fixedly connected with a top plate 15. The inner wall of the protective shell 14 is fixedly connected with a fixing plate 16, which is used to support the water storage tank 17 and other upper components to ensure their stability. The top of the fixing plate 16 is fixedly connected with a water storage tank 17, which is used to store the cooling water required during the cutting process, help reduce the heat generated during cutting, and protect the cutting tool and the material. A water pipe head 18 is fixedly connected to the inner wall of the water storage tank 17, which is used to connect the water storage tank 17 with the cutting area and is responsible for transporting the cooling water in the water storage tank 17 to the cutting position. The bottom of the top plate 15 is fixedly connected with a telescopic assembly that provides synchronous lifting ability to ensure that each component can be adjusted according to needs during the processing. The inner wall of the telescopic assembly is fixedly connected with a cylinder 21. The cylinder 21, as part of the telescopic assembly, is responsible for realizing the lifting action of the mechanical components. The output end of the cylinder 21 is fixedly connected with a connecting plate 22. The connecting plate 22 is used to connect the cylinder 21 with the electrical box 23 and plays a role of support and fixation. The electrical box 23 is fixedly connected to the front side of the connecting plate 22, and a motor 2 is fixed inside, which is responsible for the power supply and control of the entire milling machine. Sliding plates 24 are fixedly connected to both the left and right sides of the electrical box 23, which are used to provide the sliding and adjustment ability of the electrical box 23 so that the operator can adjust the position according to needs. The telescopic assembly includes a cylinder 19, which is responsible for providing an additional lifting function and enhancing the flexibility and adaptability of the equipment. The top of the cylinder 19 is fixedly connected to the bottom of the top plate 15, and the output end of the cylinder 19 is fixedly connected with a housing 20, which is used to wrap the cylinder 19 and provide protection and support.

[0043] Refer to Figure 3 , Figure 5 , Figure 4 , Figure 6, a cutting component providing rotational ability is fixedly connected to the front side of the first connecting plate 22. The cutting component is a key part of the entire milling machine and is responsible for performing the actual milling and grinding work. Two fixing blocks 31 are fixedly connected to the front side of the first protective shell 14. The cutting component includes an electric box 23. The output end of the electric box 23 is fixedly connected to a first rotating shaft 25. The first rotating shaft 25 is the core transmission shaft of the cutting component and is responsible for transmitting the output power of the electric box 23 to the second rotating shaft 29. The outer parts of two sliding plates 24 are slidably connected to the inner walls of the two fixing blocks 31. The front side of the first rotating shaft 25 is detachably connected to the second rotating shaft 29 for connecting the grinding disc 30 and is responsible for transmitting the power of the first rotating shaft 25 to the grinding disc 30. Two second clamping plates 27 are detachably connected to the outer part of the first rotating shaft 25 for fixing the second rotating shaft 29 and the grinding disc 30 to ensure that they will not loosen or shift during the cutting process. The inner wall of the second clamping plate 27 is detachably connected to the second rotating shaft 29. The grinding disc 30 is fixedly connected to the outer part of the second rotating shaft 29. A plurality of clamping holes 26 are provided in the inner walls of both the first rotating shaft 25 and the second rotating shaft 29 for providing connection points between the second clamping plate 27 and the rotating shaft to ensure a tight fit between the two. A plurality of fixing columns 28 are slidably connected to the outer parts of the two second clamping plates 27 for connecting the second clamping plates 27 and the second connecting plates 32 to provide additional support and stability. Two second clamping plates 27 are fixedly connected to the outer parts of the plurality of fixing columns 28. Two second connecting plates 32 are fixedly connected to the left and right sides of the two second clamping plates 27 for connecting the second clamping plates 27 and the connecting shaft 33 to play a role in support and fixation. The connecting shaft 33 is slidably connected to the inner walls of the two second connecting plates 32 for connecting the second connecting plates 32 and the fixing ring 34 and is responsible for transmitting power. Two fixing rings 34 are threadedly connected to the outer part of the connecting shaft 33 for locking the connecting shaft 33 to ensure that it will not loosen or fall off during the working process.

[0044] Working principle: The operator starts the motor 2 to drive the rotating plate 4 connected to the driving shaft 3 to rotate. The rotating plate 4 drives the connecting rod 6 connected to the first fixed shaft 5 to rotate. Since the connecting rod 6 is rotatably connected to the second fixed shaft 7, the second fixed shaft 7 drives the connecting rod 8 to move back and forth under the action of the sliding groove 11. After adjusting the two first clamping plates 10 to an appropriate size, the raw material is clamped by being engaged with the inner wall of the first clamping plate 10 to ensure that it will not loosen during processing.

[0045] Then, remove the second clamping plate 27 by rotating the fixed ring 34, replace it with a suitable grinding disc 30, fix the fixed column 28 on the inner wall of the second clamping plate 27, align it with the clamping hole 26 and insert it for fixation. Twist the fixed ring 34 to connect the first rotating shaft 25 and the second rotating shaft 29. Start the first cylinder 19 connected to the bottom of the top plate 15 to drive the second housing 20 to move longitudinally back and forth, then start the second cylinder 21 to move horizontally back and forth. Finally, adjust the processing position of the grinding disc 30 and process the raw material. To avoid damage to the raw material caused by the high heat generated by the friction during grinding, a pump can be installed outside the water storage tank 17, and the water source can be mobilized to spray the grinding disc 30 through the water pipe head 18 to reduce the temperature generated by grinding. The heat generated by the movement of the internal mechanical mechanism can be discharged through the holes on both inner walls of the first protective shell 14 to ensure that the machine will not be damaged due to overheating.

[0046] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Graphitized furnace head block end face milling machine, including a processing table (1), characterized in that: A transmission component providing rotational ability is fixedly connected to the bottom of the processing table (1). Two first fixed shafts (5) are fixedly connected to the outside of the transmission component. A first connecting rod (6) is rotatably connected to the outside of the first fixed shaft (5). A second fixed shaft (7) is rotatably connected to the inner wall of the first connecting rod (6). A second connecting rod (8) is fixedly connected to the outside of the second fixed shaft (7). A third fixed shaft (9) is fixedly connected to the inner wall of the second connecting rod (8). A first clamping plate (10) is fixedly connected to the top of the third fixed shaft (9). Two sliding grooves (11) are formed in the bottom inner wall of the processing table (1).

2. The graphite furnace head block end face milling machine according to claim 1, characterized in that: The transmission component includes a motor (2). The top of the motor (2) is fixedly connected to the bottom of the processing table (1). The output end of the motor (2) is fixedly connected to a drive shaft (3). A rotating plate (4) is fixedly connected to the outside of the drive shaft (3).

3. The graphite furnace head block end face milling machine according to claim 1, characterized in that: A plurality of feet (12) are fixedly connected to the bottom of the processing table (1). A circular groove (13) is formed in the inner wall of the processing table (1). A first protective shell (14) is fixedly connected to the rear side of the outside of the processing table (1).

4. The graphite furnace head block end face milling machine according to claim 3, characterized in that: A top plate (15) is fixedly connected to the top of the first protective shell (14). A top plate (15) is fixedly connected to the top of the first protective shell (14). A fixing plate (16) is fixedly connected to the inner wall of the first protective shell (14). A water storage tank (17) is fixedly connected to the top of the fixing plate (16).

5. The graphite furnace head block end face milling machine according to claim 4, characterized in that: A water pipe head (18) is fixedly connected to the inner wall of the water storage tank (17). A telescopic component providing synchronous lifting ability is fixedly connected to the bottom of the top plate (15). A second cylinder (21) is fixedly connected to the inner wall of the telescopic component. The output end of the second cylinder (21) is fixedly connected to a first connecting plate (22). An electrical box (23) is fixedly connected to the front side of the first connecting plate (22). Sliding plates (24) are fixedly connected to both the left and right sides of the electrical box (23).

6. The end face milling machine for graphitized furnace head blocks according to claim 5, wherein: The telescopic component includes a first cylinder (19). The top of the first cylinder (19) is fixedly connected to the bottom of the top plate (15). The output end of the first cylinder (19) is fixedly connected to a second housing (20).

7. The graphite furnace head block end face milling machine according to claim 5, characterized in that: A cutting component providing rotational ability is fixedly connected to the front side of the first connecting plate (22). Two fixed blocks (31) are fixedly connected to the front side of the first protective shell (14).

8. The graphite furnace head block end face milling machine according to claim 7, characterized in that: The cutting assembly includes an electrical box (23). The output end of the electrical box (23) is fixedly connected to a first rotating shaft (25). The outer parts of the two sliding plates (24) are slidably connected to the inner walls of the two fixed blocks (31). The front side of the first rotating shaft (25) is detachably connected to a second rotating shaft (29). Two second clamping plates (27) are detachably connected to the outer part of the first rotating shaft (25). The second rotating shaft (29) is detachably connected to the inner wall of the second clamping plate (27). A grinding disc (30) is fixedly connected to the outer part of the second rotating shaft (29). A plurality of clamping holes (26) are formed in the inner walls of the first rotating shaft (25) and the second rotating shaft (29). A plurality of fixing columns (28) are slidably connected to the outer parts of the two second clamping plates (27). The two second clamping plates (27) are fixedly connected to the outer parts of the plurality of fixing columns (28). Two second connecting plates (32) are fixedly connected to the left and right sides of the two second clamping plates (27). A connecting shaft (33) is slidably connected to the inner walls of the two second connecting plates (32). Two fixing rings (34) are threadedly connected to the outer part of the connecting shaft (33).

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