Polishing device for crank arm machining

Abstract

The utility model relates to the technical field of mechanical manufacturing and machining, and discloses a grinding device for crank arm machining, which comprises a support frame and a bottom plate, the support frame is divided into an upper layer and a lower layer, the bottom plate is fixedly mounted at the top of the support frame, and clamping structures are arranged on two side surfaces of the top of the bottom plate. A set of parallel and vertical supporting plates are fixedly installed on the other side face of the top of the bottom plate, a top plate is fixedly installed on the tops of the supporting plates, sliding structures are arranged on the side faces of the supporting plates, lifting structures are arranged on the outer side faces of the supporting plates, and a connecting plate is fixedly installed on the inner side face of the supporting plate on one side. The sliding structure, the lifting structure, the air cylinder pushing structure and the rotating structure are matched with one another, high flexibility and adaptability are achieved, the position of a sliding rod in a sliding groove is adjusted, a lifting motor drives a lead screw to enable a movable plate to ascend and descend, and an air cylinder pushes a grinding structure fixing plate to rotate; and the grinding disc can grind the crank arm at different angles and positions.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing and processing technology, specifically a grinding device for crank arm processing. Background Technology

[0002] Crank arms are key components in mechanical transmission systems. They are typically bent and used to connect different mechanical structures and transmit power. Their shape and size vary depending on the application. Crank arms play an indispensable role in various mechanical equipment, such as automotive steering systems and industrial robot joints. Because crank arms need to withstand complex stresses during operation, their surface quality and precision directly affect the performance and reliability of the equipment. High-quality grinding can eliminate machining marks, improve surface smoothness, thereby reducing stress concentration, enhancing the fatigue life of the crank arm, and ensuring long-term stable operation of the equipment.

[0003] Traditional crank arm grinding technology has revealed a series of problems in actual operation. In the early processing, manual grinding dominated, which relied entirely on the experience and manual skills of workers. This method was not only extremely inefficient, but also difficult to guarantee consistent grinding results. Workers were prone to fatigue after long hours of work, resulting in uneven grinding intensity on different parts of the crank arm and inconsistent surface quality. With the development of technology, some semi-automatic grinding equipment was introduced, but these devices lacked flexibility when dealing with the complex geometry of the crank arm. They could often only grind some regular surfaces of the crank arm, and it was difficult to achieve comprehensive and uniform grinding for special parts such as corners and grooves. This not only affected the overall appearance quality of the crank arm, but also reduced its mechanical performance, increased the potential for equipment failure during operation, and thus affected the efficiency and cost control of the entire production process. Therefore, we propose a grinding device for crank arm processing. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a grinding device for crank arm processing, which solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a grinding device for crank arm processing, comprising a support frame and a base plate. The support frame has two layers, upper and lower. The base plate is fixedly installed on the top of the support frame. Clamping structures are provided on both sides of the top of the base plate. A set of parallel and vertical support plates is fixedly installed on the other side of the top of the base plate. A top plate is fixedly installed on the top of the support plates. A sliding structure is provided on the side of the support plates. A lifting structure is provided on the outer side of the support plates. A connecting plate is fixedly installed on the inner side of one side of the support plates.

[0006] Preferably, the clamping structure includes a mounting plate, a drive motor, an electric push rod, and a clamping block. A set of parallel mounting plates are fixedly installed on the top of the base plate. A drive motor is fixedly installed on the outer side of the mounting plate. An electric push rod is fixedly installed on the opposite side of the mounting plate. The other end of the electric push rod is fixedly connected to a clamping block. The side of the clamping block is V-shaped.

[0007] Preferably, the sliding structure includes a sliding groove, a sliding rod, and a worktable. A set of through sliding grooves is provided on the side of a set of support plates. A sliding rod is slidably installed in the sliding groove, and a worktable is fixedly installed in the middle of the sliding rod.

[0008] Preferably, the lifting structure includes a movable plate, a fixed plate, a lifting motor, and a lead screw. The movable plate is fixedly installed on the outer end face of the slide rod, and the fixed plate is fixedly installed on the outer side of the support plate. The lifting motor is fixedly installed at the top center of the fixed plate. A through threaded hole is opened in the center of the movable plate and the fixed plate. The output shaft of the lifting motor is connected to the lead screw, and the lead screw is engaged with the threaded hole opened in the movable plate and the fixed plate.

[0009] Preferably, the side of the connecting plate is provided with a cylinder pushing structure and a rotating structure. The cylinder pushing structure includes a cylinder support seat and a cylinder. The cylinder support seat is fixedly installed on the side of the connecting plate, and a cylinder is rotatably connected to the other side of the cylinder support seat.

[0010] Preferably, the rotating structure includes a grinding structure fixing plate, a safety hook, a grinding disc motor, and a grinding disc. A mounting base is fixedly installed on the side of the connecting plate corresponding to the cylinder support seat. The other end of the mounting base is rotatably connected to the grinding structure fixing plate. A safety hook is rotatably connected to the outer side of the mounting base and the grinding structure fixing plate. The other end of the side of the grinding structure fixing plate is fixedly connected to the cylinder. A grinding disc motor is fixedly installed on the outer side wall of the grinding structure fixing plate. The output shaft of the grinding disc motor is fixedly connected to the grinding disc.

[0011] Compared with the prior art, the present invention provides a grinding device for crank arm processing, which has the following beneficial effects:

[0012] 1. This crank arm processing grinding device has multiple structures working together, which greatly shortens the grinding time. The clamping structure can quickly position and clamp the crank arm without repeated manual adjustments. The sliding structure and lifting structure can quickly adjust the position of the worktable and grinding components, so that the grinding disc can quickly reach each grinding area of ​​the crank arm, improving production efficiency and reducing production costs.

[0013] 2. The grinding device for crank arm processing has a sliding structure, a lifting structure, a cylinder pushing structure, and a rotating structure that work together to provide high flexibility and adaptability. By adjusting the position of the slide rod in the slide groove, the lifting motor driving the lead screw to raise and lower the moving plate, and the cylinder pushing the grinding structure fixed plate to rotate, the grinding disc can grind various complex shapes of the crank arm at different angles and positions.

[0014] 3. The grinding device for crank arm processing controls the clamping block through the drive motor and electric push rod on the mounting plate. Its V-shaped side can fit tightly against the crank arm, ensuring that the crank arm is stable and does not wobble during the grinding process, laying the foundation for precise grinding. During grinding, the grinding disc motor in the rotating structure drives the grinding disc to rotate stably, and the cylinder push structure precisely controls the grinding force and angle. Whether it is the flat surface of the crank arm or complex corners, grooves and other parts, uniform grinding can be achieved. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the clamping structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the sliding mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the cylinder-driven structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the safety hook of this utility model.

[0020] In the diagram: 1. Support frame; 2. Base plate; 3. Mounting plate; 4. Drive motor; 5. Electric push rod; 6. Clamping block; 7. Support plate; 8. Slide groove; 9. Slide rod; 10. Moving plate; 11. Fixed plate; 12. Lifting motor; 13. Lead screw; 14. Worktable; 15. Top plate; 16. Connecting plate; 17. Cylinder support seat; 18. Cylinder; 19. Mounting base; 20. Grinding structure fixing plate; 21. Safety hook; 22. Grinding disc motor; 23. Grinding disc. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5A grinding device for crank arm processing includes a support frame 1 and a base plate 2. The support frame 1 has two layers, upper and lower. The base plate 2 is fixedly installed on the top of the support frame 1. Clamping structures are provided on both sides of the top of the base plate 2. A set of parallel and vertical support plates 7 are fixedly installed on the other side of the top of the base plate 2. A top plate 15 is fixedly installed on the top of the support plate 7. A sliding structure is provided on the side of the support plate 7. A lifting structure is provided on the outer side of the support plate 7. A connecting plate 16 is fixedly installed on the inner side of one support plate 7.

[0023] Furthermore, the clamping structure includes a mounting plate 3, a drive motor 4, an electric push rod 5, and a clamping block 6. A set of parallel mounting plates 3 are fixedly installed on the top of the base plate 2. The drive motor 4 is fixedly installed on the outer side of the mounting plate 3. The electric push rod 5 is fixedly installed on the opposite side of the mounting plate 3. The other end of the electric push rod 5 is fixedly connected to the clamping block 6. The side of the clamping block 6 is V-shaped. To ensure precise control of the clamping force, the drive motor 4 is equipped with a high-precision torque sensor. The torque sensor can monitor the motor output torque in real time. When the clamping block 6 contacts the crank arm, it clamps according to the preset clamping force. The clamping force is adjusted by a torque sensor to regulate the output torque of the drive motor 4, preventing damage to the crank arm due to excessive clamping force or displacement of the crank arm during grinding due to insufficient clamping force. Meanwhile, the push rod part of the electric push rod 5 is made of high-strength, corrosion-resistant alloy material, and the surface has undergone special wear-resistant treatment, which greatly extends the service life of the electric push rod 5 and reduces wear and malfunctions caused by frequent use. In addition, a layer of elastic and anti-slip rubber pad is attached to the V-shaped side of the clamping block 6, which can further enhance the clamping effect on the crank arm.

[0024] Furthermore, the sliding structure includes a slide groove 8, a slide rod 9, and a worktable 14. A set of through slide grooves 8 are opened on the side of a set of support plates 7. The slide rod 9 is slidably installed in the slide groove 8, and the worktable 14 is fixedly installed in the middle of the slide rod 9. At the bottom of the slide groove 8, multiple balls are evenly distributed. These balls can convert the sliding friction between the slide rod 9 and the slide groove 8 into rolling friction, which greatly reduces the friction force and makes the slide rod 9 slide more smoothly and flexibly in the slide groove 8, reducing power loss and improving the accuracy and stability of sliding. The connection between the slide rod 9 and the worktable 14 adopts a combination of welding and bolt fastening. Welding is used for initial fixation to ensure the stability of the connection, and bolts are used for further reinforcement. This ensures that the worktable 14 can maintain a stable connection with the slide rod 9 when bearing crank arms of different weights, without loosening, and ensures the accuracy of the crank arm position during the grinding process.

[0025] Furthermore, the lifting structure includes a movable plate 10, a fixed plate 11, a lifting motor 12, and a lead screw 13. The movable plate 10 is fixedly installed on the outer end face of the slide rod 9, and the fixed plate 11 is fixedly installed on the outer side of the support plate 7. The lifting motor 12 is fixedly installed at the top center of the fixed plate 11. A through threaded hole is opened in the center of the movable plate 10 and the fixed plate 11. The output shaft of the lifting motor 12 is connected to the lead screw 13. The lead screw 13 is connected to the threaded hole opened in the movable plate 10 and the fixed plate 11. The lifting motor 12 is a motor with a brake function. When the motor stops working, the brake device will be activated immediately to lock the motor shaft and prevent the lead screw 13 from rotating due to gravity or external vibration. This design prevents the moving plate 10 from falling unexpectedly, ensuring that the relative position of the grinding disc 23 and the crank arm remains stable during the grinding process, thus improving the precision and safety of the grinding. A lead screw protective sleeve is installed on the lead screw 13. This protective sleeve can effectively prevent dust, debris and other impurities from entering the mating part between the lead screw 13 and the threaded hole, avoiding problems such as lead screw wear and jamming caused by the accumulation of impurities, and extending the service life of the lead screw 13 and the entire lifting structure. At the same time, a shock-absorbing pad is used between the fixed plate 11 and the support plate 7. The shock-absorbing pad can absorb the vibration generated when the lifting motor 12 is working, reduce the impact of vibration on the entire device, make the lifting process more stable, and further improve the grinding quality.

[0026] Furthermore, the side of the connecting plate 16 is provided with a cylinder pushing structure and a rotating structure. The cylinder pushing structure includes a cylinder support 17 and a cylinder 18. The cylinder support 17 is fixedly installed on the side of the connecting plate 16, and the cylinder 18 is rotatably connected to the other side of the cylinder support 17. The cylinder 18 is equipped with a magnetic switch, which can precisely control the extension and retraction position of the cylinder piston rod. When grinding crank arms of different shapes, the operator can control the stroke of the cylinder piston rod according to actual needs to ensure that the grinding structure fixing plate 20 can reach the appropriate grinding position. The connecting bolts between the cylinder support 17 and the connecting plate 16 are anti-loosening bolts. The anti-loosening nut effectively prevents the bolts from loosening due to vibration or other reasons during equipment operation, ensuring the reliability of the connection between the cylinder support 17 and the connecting plate 16. This, in turn, ensures that the cylinder 18 can stably push the grinding structure fixing plate 20 to rotate. In addition, a spherical bearing is provided at the connection between the piston rod of the cylinder 18 and the grinding structure fixing plate 20. The spherical bearing allows the piston rod to swing flexibly within a certain range, enabling the cylinder 18 to better adapt to the complex shape of the crank arm when pushing the grinding structure fixing plate 20, ensuring that the grinding disc 23 and the surface of the crank arm always maintain good contact, and achieving a more uniform grinding effect.

[0027] Furthermore, the rotating structure includes a grinding structure fixing plate 20, a safety hook 21, a grinding disc motor 22, and a grinding disc 23. A mounting base 19 is fixedly installed on the side of the connecting plate 16 next to the cylinder support seat 17. The other end of the mounting base 19 is rotatably connected to the grinding structure fixing plate 20. The mounting base 19 and the outer side of the grinding structure fixing plate 20 are rotatably connected to the safety hook 21. The other end of the side of the grinding structure fixing plate 20 is fixedly connected to the cylinder 18. The grinding disc motor 22 is fixedly installed on the outer wall of the side of the grinding structure fixing plate 20. The output shaft of the grinding disc motor 22 is fixedly... The grinding disc 23 is fixedly connected, and the grinding disc motor 22 adopts a variable frequency speed control motor. The operator can adjust the speed of the motor according to factors such as the material of the crank arm and the grinding requirements. For crank arms with higher hardness, the speed of the grinding disc motor 22 can be appropriately increased to enhance the grinding effect. For softer materials, the speed can be reduced to avoid over-grinding. The grinding structure fixing plate 20 is made of lightweight high-strength aluminum alloy, which reduces its own weight while ensuring structural strength, reduces the load on the cylinder 18, makes the cylinder push more flexible, and also helps to improve the operating efficiency of the entire device.

[0028] Structural Description:

[0029] Support frame 1; Support frame 1 is the supporting foundation of the entire grinding device. It has a two-layer structure and firmly supports the top base plate 2, providing an installation platform for other components of the device and ensuring that the device remains stable during operation.

[0030] Base plate 2; As a load-bearing component, base plate 2 has clamping structures on both sides of its top to fix the crank arm, and a support plate 7 is installed on the other side to provide horizontal support and installation position for each part of the device. It is a key part of the overall layout of the device.

[0031] Mounting plate 3; Mounting plate 3 is fixed parallel to the top of base plate 2 and is an important component of clamping structure. Drive motor 4 is installed on its outer side and electric push rod 5 is installed on the opposite side, which serves to connect and support the various components of clamping structure.

[0032] Drive motor 4; Drive motor 4 is installed on the outer side of mounting plate 3 to provide power to electric push rod 5. By driving the motor to operate, the extension and retraction of electric push rod is controlled, thereby realizing the clamping and releasing operation of clamping block 6 on crank arm.

[0033] Electric push rod 5; Electric push rod 5 is installed on the opposite side of mounting plate 3, one end is connected to drive motor 4, and the other end is connected to clamping block 6. Driven by the drive motor, it pushes clamping block 6 to move in order to adjust the clamping force on the crank arm.

[0034] Clamping block 6; Clamping block 6 is installed at the other end of electric push rod 5. The side is V-shaped. This shape can fit tightly against the crank arm. Under the push of electric push rod, the crank arm is firmly clamped from both sides to prevent it from shaking during grinding.

[0035] Support plate 7; Support plate 7 is installed vertically and parallel to the top of base plate 2. Sliding groove 8 is opened on its side. Lifting structure related components are installed on the outer side. Top plate 15 is installed on the top. It is the installation carrier of sliding structure and lifting structure.

[0036] Slide 8; Slide 8 is opened on the side of the support plate 7, and slide rod 9 is slidably installed inside it. It provides a sliding track for slide rod 9, so that slide rod 9 can drive the worktable 14 to move horizontally and realize the adjustment of the horizontal position of the crank arm;

[0037] Slide rod 9; Slide rod 9 is installed in slide groove 8, with worktable 14 fixed in the middle. When it slides in slide groove 8, it drives the worktable 14 and the crank arm placed on it to move horizontally, adjusting the horizontal relative position with the grinding disc 23.

[0038] Movable plate 10; Movable plate 10 is fixed on the outer end face of slide rod 9, and has a threaded hole in the center that cooperates with lead screw 13. Driven by lifting motor 12, it moves up and down along lead screw 13, thereby driving slide rod 9, worktable 14 and crank arm to move vertically.

[0039] Fixed plate 11; Fixed plate 11 is fixed to the outer side of support plate 7, and lifting motor 12 is installed on the top. There is a threaded hole in the center that cooperates with lead screw 13, providing a stable installation position for lifting motor 12 and lead screw 13, and ensuring the normal operation of lifting structure.

[0040] Lifting motor 12; The lifting motor 12 is installed at the top center of the fixed plate 11, and the output shaft is connected to the lead screw 13. After starting, it drives the lead screw 13 to rotate. Through the cooperation of the lead screw with the threaded holes of the moving plate 10 and the fixed plate 11, the lifting of the moving plate 10 is realized.

[0041] Lead screw 13; Lead screw 13 is connected to the output shaft of lifting motor 12 and cooperates with the threaded holes of moving plate 10 and fixed plate 11 to convert the rotation of lifting motor 12 into the lifting motion of moving plate 10 and adjust the vertical position of grinding disc 23 and crank arm.

[0042] Worktable 14; Worktable 14 is fixed in the middle of slide bar 9 and is used to place the crank arm to be ground. It moves with slide bar 9 and moving plate 10 so that the crank arm reaches the appropriate grinding position.

[0043] Top plate 15; Top plate 15 is fixed to the top of support plate 7, which reinforces support plate 7, enhances the overall structural stability of the device, and also prevents debris from falling into the device from above.

[0044] Connecting plate 16; The connecting plate 16 is installed on the inner side of the support plate 7. Its side is provided with a cylinder pushing structure and a rotating structure. It is the key hub connecting the grinding-related components, enabling the grinding components to work together.

[0045] Cylinder support seat 17; The cylinder support seat 17 is fixed to the side of the connecting plate 16 and is used to support and fix the cylinder 18, ensuring that the cylinder 18 remains stable during operation and providing support for the cylinder to push the grinding structure fixing plate 20 to rotate.

[0046] Cylinder 18; Cylinder 18 is rotatably connected to the other side of cylinder support seat 17. Through the extension and retraction of the piston rod, it pushes the grinding structure fixing plate 20 to rotate around the mounting base 19, thereby adjusting the grinding angle of the grinding disc 23.

[0047] Mounting base 19; Mounting base 19 is fixed to the side of connecting plate 16, and the other end is rotatably connected to grinding structure fixing plate 20, providing a fulcrum for grinding structure fixing plate 20 so that it can rotate flexibly to adapt to different grinding needs of the crank arm.

[0048] Grinding structure fixing plate 20; Grinding structure fixing plate 20 is rotatably connected to mounting base 19, grinding disc motor 22 and safety hook 21 are mounted on the side, and connected to cylinder 18, used to fix grinding disc 23, and adjust the position and angle of grinding disc under the push of cylinder;

[0049] Safety hook 21; Safety hook 21 is rotatably connected between the mounting base 19 and the outer side of the grinding structure fixing plate 20. When the grinding structure fixing plate 20 is rotated to the appropriate position, it is locked to prevent accidental rotation and ensure the safety of the grinding process.

[0050] Grinding disc motor 22; The grinding disc motor 22 is installed on the outer side wall of the grinding structure fixing plate 20, and its output shaft is connected to the grinding disc 23. After starting, it drives the grinding disc 23 to rotate at high speed, providing power for the crank arm grinding.

[0051] Grinding disc 23; Grinding disc 23 is fixed on the output shaft of grinding disc motor 22 and rotates at high speed under the drive of the motor to directly grind the surface of the crank arm. It is the core component for realizing the grinding function.

[0052] Working principle: In the preparation stage, the crank arm to be ground is placed on the worktable 14. At this time, the clamping structure starts to work, and the drive motor 4 on the mounting plate 3 starts. The drive motor 4 provides power to the electric push rod 5. The electric push rod 5 extends or retracts under the drive. Since the side of the clamping block 6 is V-shaped, it can closely fit the shape of the crank arm. Under the push of the electric push rod 5, the two clamping blocks 6 firmly clamp the crank arm from both sides, ensuring that the crank arm will not shake during the grinding process, providing a stable foundation for precise grinding. After clamping, the sliding structure and the lifting structure work together to adjust the relative position of the grinding disc 23 and the crank arm. The sliding groove 8 and the sliding rod 9 on the side of the support plate 7 constitute the sliding structure. When it is necessary to adjust the horizontal position, the sliding rod 9 can slide smoothly in the sliding groove 8. The middle of the sliding rod 9 is fixed. The worktable 14 moves along with the slide rod 9, causing the crank arm to move horizontally, aligning the part of the crank arm to be ground with the horizontal position of the grinding disc 23. Simultaneously, the lifting structure begins operation. The lifting motor 12 is installed at the top center of the fixed plate 11. Starting the lifting motor 12 causes its output shaft to rotate the lead screw 13. The moving plate 10 and the fixed plate 11 have through threaded holes in their centers. The lead screw 13 engages with the threaded holes. When the lead screw 13 rotates, the moving plate 10 moves up and down along it. Since the moving plate 10 is fixed to the outer end face of the slide rod 9, the slide rod 9 moves up and down with the moving plate 10, thereby causing the worktable 14 and the crank arm to move up and down, achieving precise vertical positioning of the grinding disc 23 and the crank arm. After the position adjustment is completed, the cylinder push structure and the rotating structure... The work begins, performing grinding operations on the crank arm. The cylinder support 17 is fixed to the side of the connecting plate 16, and the cylinder 18 is rotatably connected to the other side of the cylinder support 17. After the cylinder 18 starts, the piston rod extends or retracts, pushing the grinding structure fixing plate 20, which is fixedly connected to it, to rotate around the mounting base 19. The grinding disc motor 22, mounted on the outer wall of the side of the grinding structure fixing plate 20, starts, driving the grinding disc 23 to rotate at high speed. Under the push of the cylinder 18, the grinding disc 23 contacts the crank arm surface at different angles and positions for grinding. The safety hook 21 is installed between the mounting base 19 and the outer side of the grinding structure fixing plate 20. When the grinding structure fixing plate 20 rotates to the appropriate position, the safety hook 21 can lock it, preventing the grinding structure fixing plate 20 from being damaged during grinding. Zero unexpected rotation ensures a safe and stable grinding process. The coordinated operation of multiple structures throughout the grinding process achieves significant results. The clamping structure ensures the stability of the crank arm, greatly improving grinding precision and avoiding uneven grinding caused by crank arm wobbling. This enhances the surface quality and mechanical properties of the crank arm. The cooperation between the sliding and lifting structures allows for quick and precise adjustment of the relative position of the grinding disc and the crank arm, enabling the grinding disc to reach all areas of the crank arm to be ground, thus improving grinding efficiency. The coordinated work of the cylinder-driven and rotating structures allows the grinding disc to flexibly adapt to the complex geometry of the crank arm, achieving uniform grinding on flat surfaces, corners, grooves, and other special areas, effectively solving the problem of insufficient flexibility in traditional semi-automatic grinding equipment.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A polishing device for crank arm machining, comprising a support frame (1), a bottom plate (2), characterized in that: The support frame (1) is two layers, the top of the support frame (1) is fixedly installed with a bottom plate (2), the top of the bottom plate (2) is provided with a clamping structure on both sides, the other side of the top of the bottom plate (2) is fixedly installed with a group of parallel and vertical support plates (7), the top of the support plate (7) is fixedly installed with a top plate (15), the side of the support plate (7) is provided with a sliding structure, the outer side of the support plate (7) is provided with a lifting structure, and the inner side of the support plate (7) on one side is fixedly installed with a connecting plate (16).

2. The arm processing polishing device according to claim 1, characterized in that: The clamping structure comprises a mounting plate (3), a drive motor (4), an electric push rod (5) and a clamping block (6), a group of parallel mounting plates (3) are fixedly installed on the top of the bottom plate (2), the outer side of the mounting plate (3) is fixedly installed with a drive motor (4), the opposite side of the mounting plate (3) is fixedly installed with an electric push rod (5), the other end of the electric push rod (5) is fixedly connected with a clamping block (6), and the side of the clamping block (6) is V-shaped.

3. The arm processing polishing device according to claim 1, characterized in that: The sliding structure comprises a sliding groove (8), a sliding rod (9) and a workbench (14), a group of sliding grooves (8) are formed in the side of a group of support plates (7), the sliding groove (8) is slidably installed with a sliding rod (9), and the middle of the sliding rod (9) is fixedly installed with a workbench (14).

4. The arm processing polishing apparatus according to claim 3, characterized by: The lifting structure comprises a moving plate (10), a fixed plate (11), a lifting motor (12) and a lead screw (13), the moving plate (10) is fixedly installed on the outer side end face of the sliding rod (9), the outer side of the support plate (7) is fixedly installed with a fixed plate (11), the top of the fixed plate (11) is fixedly installed with a lifting motor (12), the center of the moving plate (10) and the fixed plate (11) is provided with a threaded hole penetrating through, the output shaft of the lifting motor (12) is connected with a lead screw (13), and the lead screw (13) is connected with the threaded hole penetrating through the moving plate (10) and the fixed plate (11).

5. The arm processing polishing apparatus according to claim 1, characterized by: The side of the connecting plate (16) is provided with a cylinder pushing structure and a rotating structure, the cylinder pushing structure comprises a cylinder support seat (17) and a cylinder (18), the cylinder support seat (17) is fixedly installed on the side of the connecting plate (16), and the other side of the cylinder support seat (17) is rotatably connected with the cylinder (18).

6. The arm processing polishing apparatus according to claim 5, characterized by: The rotating structure comprises a polishing structure fixed plate (20), a safety hook (21), a grinding disc motor (22) and a grinding disc (23), the side of the connecting plate (16) is fixedly installed with a mounting base (19) corresponding to the cylinder support seat (17), the other end of the mounting base (19) is rotatably connected with the polishing structure fixed plate (20), the outer side of the mounting base (19) and the polishing structure fixed plate (20) is rotatably connected with the safety hook (21), the other end of the side of the polishing structure fixed plate (20) is fixedly connected with the cylinder (18), the side outer wall of the polishing structure fixed plate (20) is fixedly installed with a grinding disc motor (22), and the output shaft of the grinding disc motor (22) is fixedly connected with a grinding disc (23).

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