A conformal weld cleaning and grinding device and method

Abstract

The air filter presses on the upper cylinder to release air from the bottom and the air filter presses on the lower cylinder to release air from the bottom.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, in particular to equipment for grinding welding slag generated during the welding process, and more particularly to equipment capable of grinding welds of different shapes. Background Art

[0002] Welding is one of the most common forming techniques, widely used in the manufacturing industry. Conventional welding processes often leave slag around the weld seam, often resulting in poor weld surface quality. To ensure surface quality and subsequent production processes, these weld seams and the surrounding area need to be polished and cleaned.

[0003] At present, for welds on parts, a driving mechanism is generally used to drive a striking head to strike the welds to complete the grinding and cleaning of the welds. This method is to clean the welds by striking, which can reduce the residual stress inside the material caused by welding. However, for special-shaped curved welds, the striking force of this striking method is inconsistent, and it is impossible to output a constant force. The cleaning and grinding effect is not good, and the structure of the processed parts is relatively simple, and the adaptability is poor. For the grinding of curved welds on complex parts, large-scale equipment with more than five axes of linkage is generally required. This equipment has a complex structure, is expensive, has high maintenance costs, and has high grinding costs for a single piece, which is not suitable for mass production. Therefore, this field is in urgent need of a conformal weld cleaning and grinding equipment that is highly versatile and can adapt to workpieces of different shapes. Summary of the Invention

[0004] The present invention provides a conformal weld cleaning and grinding device and a grinding method, which effectively solve the problem that existing grinding equipment has poor versatility and cannot adapt to conformal grinding of special-shaped workpieces.

[0005] The present invention provides a conformal weld cleaning and grinding device that adopts the following technical solutions: a horizontal guide rail capable of linear movement is fixedly arranged on the surface of the base, a workbench capable of rotating on the horizontal plane is fixedly connected to the upper surface of the guide rail, a horizontal main cantilever is arranged above the workbench, the fixed end of the main cantilever is connected to the support column through a vertical lead screw, and the bottom of the support column is fixedly connected to the base; an air compressor, a high-pressure gas tank and a motor are fixedly arranged on the hanging end of the main cantilever, the air outlet of the air compressor is connected to the air inlet of the high-pressure gas tank through an air pipe, the air outlet of the high-pressure gas tank is connected to the high-pressure nozzle through a reversing valve, and the reversing valve is also connected to the air inlet and exhaust port of the two cylinders respectively, and the water The output shaft of the horizontally arranged motor is connected to the driving pulley. Two cylinders and two driven pulleys are arranged below the driving pulley. The lower output end of each cylinder is fixedly connected to a driven pulley. The two driven pulleys are parallel to the driving pulley. The upper end of the cylinder body of each cylinder is fixedly connected to the lower end of a cantilever. The upper ends of the two cantilevers are hinged on the same hinge, and the hinge is fixedly connected to the main cantilever. A spring is connected between the two cantilevers. The annular closed grinding belt is fixedly wound around the driving pulley and the two driven pulleys at the same time; an air pressure sensor for monitoring the air pressure in each cylinder is provided on the air pipe connecting the reversing valve to each cylinder.

[0006] Furthermore, a tensioning wheel is provided between the driving pulley and one of the driven pulleys, and the grinding belt is wound around the tensioning wheel at the same time. The tensioning wheel is connected to the main cantilever through a slider.

[0007] Furthermore, a horizontal sliding groove is provided on the main cantilever to match the sliding block. The sliding block can move horizontally along the sliding groove, and a fastening screw is provided on the sliding block.

[0008] Furthermore, the output shaft of the motor is connected to the reducer through a coupling, and the output shaft of the reducer is coaxially connected to the driving pulley.

[0009] Furthermore, the grinding belt is composed of a belt and a diamond abrasive leather. The back of the belt is tightly fitted and fixed to the driving pulley and the two driven pulleys, and the front of the belt faces outward. A plurality of grooves are evenly spaced on the belt, and a piece of diamond abrasive leather is fixed in each groove, and the front of the diamond abrasive leather protrudes from the front of the belt.

[0010] Furthermore, the angle between the two cylinders is at least 30° and at most 120°; a cantilever stopper 36 is provided on the main cantilever, and the cantilever stopper is horizontally slidably connected to the main cantilever. When the angle between the two cylinders is at least 30° or at most 120°, the two cantilevers are in contact with the cantilever stopper.

[0011] The technical solution adopted by the grinding method of the conformal weld cleaning and grinding equipment is: the weld is directly below the grinding belt, the air compressor works, and high-pressure gas is stored in the high-pressure gas tank. When the concave and convex surface of the workpiece is ground, when the air pressure sensor detects the air pressure change in the cylinder, the reversing valve is opened, and the high-pressure gas tank is filled and discharged into the cylinder to maintain the air pressure in the cylinder at a preset pressure, ensuring that the pressure output by the cylinder to the driven pulley is constant and the degree of close contact of the grinding belt to the concave and convex surface is consistent.

[0012] Furthermore, when the grinding belt is located on the concave surface of the weld, the driven pulley moves downward due to its own weight to fit the concave surface of the workpiece, causing the length of the extended end of the cylinder connected to it to increase. The air pressure sensor detects that the air pressure in the cylinder has decreased, and the high-pressure gas tank inflates the cylinder.

[0013] Furthermore, when the grinding belt is located on the convex surface of the weld, the driven pulley is squeezed by the convex surface, causing the length of the extended end of the cylinder to shorten. The air pressure sensor detects an increase in the air pressure in the cylinder, and the cylinder is deflated.

[0014] Furthermore, while grinding, high-pressure gas in the high-pressure gas tank is ejected toward the weld through a high-pressure nozzle.

[0015] The advantages of the present invention after adopting the above technical solution are:

[0016] 1. The characteristics of the equipment of the present invention are strong adaptability and versatility. It is not affected by the surface shape of the workpiece and the direction of the weld. The pre-compression force can be adjusted and a constant pressure can be output to make the grinding belt fit the weld on the special-shaped curved surface, thereby achieving constant force and shape-conforming grinding of the weld slag.

[0017] 2. The workbench and guide rail parts of the present invention can provide the workpiece with a main motion of linear or rotational or linear plus rotational motion.

[0018] 3. The equipment of the present invention has a compact structure, small size, high working efficiency and is suitable for medium and large batch production.

[0019] 4. Each piece of frosted leather in the present invention is independent of each other and is not affected by belt deformation, so it is easy to replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments:

[0021] Figure 1 This is a structural front view of a conformal weld cleaning and grinding device provided by the present invention;

[0022] Figure 2 for Figure 1 An enlarged view of the structure of the cleaning and grinding device;

[0023] Figure 3 for Figure 2 A partial top view of the enlarged figure;

[0024] Figure 4 for Figure 2 A magnified view of the local three-dimensional structure of the middle grinding belt;

[0025] Figure 5 This is a schematic diagram of the first grinding working state of the workpiece;

[0026] Figure 6 This is a schematic diagram of the second grinding working state of the workpiece;

[0027] Figure 7 for Figure 2 An enlarged schematic diagram of the structure of the cylinder at its maximum working height.

[0028] In the figure: 1. Workbench; 2. Guide rail; 3. Base; 4. Support column; 5. Screw; 6. Main cantilever; 7. First driven pulley; 8. Cylinder; 9. Second driven pulley; 10. Air pipe; 11. Fastening screw; 12. Tensioner; 13. Slider; 14. Air compressor; 15. High-pressure gas tank; 16. Reversing valve; 17. Motor; 18. Reducer; 19. Shift handle; 20. Driving pulley; 21. Pulley bracket; 22. Hinge; 23. Spring support; 24. Spring; 25. Cantilever; 26. Air inlet; 27. Exhaust port; 28. Grinding belt; 29. ​​Belt; 30. Diamond grinding sheet; 31. Fixture; 32. Workpiece; 33. Weld seam 1; 34. High-pressure nozzle; 35. Air pressure sensor; 36. Cantilever limiter; 37. Rotor; 38. Weld seam 2. DETAILED DESCRIPTION

[0029] See also Figure 1 The present invention provides a conformal weld cleaning and grinding device, comprising: a bed and a cleaning and grinding device. The bed comprises a workbench 1, a guide rail 2, a base 3, a support 4, a lead screw 5, and a main cantilever 6. The bottom of the bed is the base 3, which is placed horizontally on the ground. A horizontal guide rail 2 is fixedly provided on the upper surface of the base 3. The upper surface of the guide rail 2 is fixedly connected to the workbench 1. The upper end of the workbench 1 is responsible for the installation and fixation of the workpiece fixture. A rotor 37 is installed in the workbench 1. The rotation center axis of the rotor 37 is vertical and perpendicular to the table surface of the workbench 1. When the rotor 37 is working, it can drive the table surface of the workbench 1 to rotate around the center axis of the rotor 37 in the horizontal plane. The guide rail 2 can move linearly in the horizontal plane of the upper surface of the base 3, thereby driving the workbench 1 to move linearly in the horizontal plane and change the processing position of the workbench 1.

[0030] A vertical support column 4 is provided beside the guide rail 2 and the workbench 1. The bottom of the support column 4 is connected to the base 3 and fixed by bolts and nuts. A vertical lead screw 5 is fixedly connected to the support column 4. A horizontal main cantilever 6 is threadedly connected to the lead screw 5. The lead screw 5 is connected to the fixed end of the main cantilever 6. The main cantilever 6 is equivalent to a nut, forming a lead screw and nut mechanism, which enables the main cantilever 6 to move up and down along the lead screw 5. The main cantilever 6 is provided above the workbench 1, and a cleaning and grinding device is provided on the hanging end of the main cantilever 6.

[0031] See also Figure 2 and Figure 3 The cleaning and grinding device shown includes an air compressor 14, a high-pressure gas tank 15, a motor 17, a driving pulley 20, a first driven pulley 7, a second driven pulley 9, an air cylinder 8, a grinding belt 28, and a high-pressure nozzle 34. The air compressor 14, high-pressure gas tank 15, and motor 17 are horizontally fixed to the suspension end of the main boom 6 using bolts and nuts. The air outlet of the air compressor 14 is connected to the air inlet of the high-pressure gas tank 15 via an air pipe, providing high-pressure gas. The high-pressure gas generated by the air compressor 14 is stored in the high-pressure gas tank 15. The air outlet of the high-pressure gas tank 15 is connected to the high-pressure nozzle 34 through a reversing valve 16, supplying high-pressure gas to the high-pressure nozzle 34. The high-pressure nozzle 34 is fixed to the lower end of the main boom 6 with screws. The high-pressure nozzle 34 is made of a flexible material and can be manually adjusted to direct the air flow toward the driven pulley, thereby cleaning metal debris left behind by grinding.

[0032] A reversing valve 16 is mounted above the main boom 6, with one end connected to the high-pressure gas tank 15 and the other end connected to the air inlet 2 and exhaust port 27 of the two cylinders 8, respectively. This valve is responsible for the air flow in and out of the two cylinders 8. The motor 17 is arranged horizontally, its output shaft connected to the reducer 18 via a coupling. The reducer 18 is fixed to the main boom 6 with bolts and nuts. The input end of the reducer 18 is connected to the output shaft of the motor 17. The output shaft of the reducer 18 is coaxially connected to the driving pulley 20 via a flat key. The central axis of the driving pulley 20 is arranged horizontally, perpendicular to the main boom 6. Therefore, the motor 17 drives the driving pulley 20 to rotate in a vertical plane through the reducer 18, providing power to the entire pulley system. A shift handle 19 is installed on the reducer 18 for manually adjusting the output speed.

[0033] The driving pulley 20 is supported on a pulley bracket 21, which is welded to the main cantilever 6. Two cylinders 8 and two driven pulleys are located below the driving pulley 20. The lower end of each cylinder 8 is the output end, and a driven pulley is fixedly welded to the lower output end of each cylinder 8: a first driven pulley 7 and a second driven pulley 9. The two driven pulleys 7 and 9 have the same structure, and their rotational axes are parallel to the rotational axis of the driving pulley 20.

[0034] The upper end of each cylinder 8 is fixed to the lower end of a cantilever 25 via bolts and nuts. The upper ends of the two cantilever arms 25 are hinged to a common hinge 22, which is welded to the main cantilever arm 6. This creates a V-shaped arrangement of the two cantilever arms 25, and the two cylinders 8 also form a V-shaped arrangement with their openings facing downward. Furthermore, the two cantilever arms 25 and the two cylinders 8 can rotate vertically about the hinge 22.

[0035] The closed annular grinding belt 28 is wound around the driving pulley 20, the first driven pulley 7 and the second driven pulley 9 at the same time, and is fixed to the driving pulley 20, the first driven pulley 7 and the second driven pulley 9. Figure 4 As shown, the grinding belt 2 consists of a belt 29 and a diamond grinding sheet 30. The back of the belt 29 is tightly secured to the driving pulley 20, the first driven pulley 7, and the second driven pulley 9, with the front of the belt 29 facing outward. The belt 29 is provided with multiple grooves at equal intervals, each of which houses a diamond grinding sheet 30. The front of the diamond grinding sheet 30 slightly protrudes from the front of the belt 29 and is used for grinding welds. The diamond grinding sheets 30 are independently secured to each other and are not affected by belt 29 deformation. They can be replaced individually when their service life has expired.

[0036] An extended end of a cylinder 8 is fixedly welded to the central axis of each of the first driven pulley 7 and the second driven pulley 9. When the cylinder 8 is extended or retracted, it provides upward and downward forces to the first driven pulley 7 and the second driven pulley 9.

[0037] Each cylinder 8 is equipped with an air inlet 26 and an exhaust port 27, each connected to a reversing valve 16 via a respective air pipe 10. An air pressure sensor 35 is installed on the air pipe 10 connecting the reversing valve 16 to each cylinder 8. This air pressure sensor 35 monitors pressure changes within each cylinder 8 and provides the pressure parameters used to control the reversing direction of the reversing valve 16. The reversing valve 16 ensures that the air pressure within each cylinder 8 remains stable near a preset pressure value, ensuring a constant force output by both cylinders 8 and, therefore, ensuring consistent contact between the grinding belt 28 and the weld seam.

[0038] A spring support 23 is fixedly mounted on each of the two cantilevers 25. A spring 24 is fixedly connected between the two spring supports 23. One end of the spring 24 is connected to a spring support 23, thus connecting the two cantilevers 25. The spring 24 is a tension spring. In the initial state, the spring 24 creates a certain angle between the two cantilevers 25, which in turn creates the same angle between the two cylinders 8. The present invention sets the angle between the two cantilevers 25 and the two cylinders 8 to a minimum of 30° and a maximum of 120°.

[0039] A cantilever stopper 36 is mounted on the main cantilever 6 and is horizontally slidably connected to the main cantilever 6. The position of the cantilever stopper 36 can be slidably adjusted. When the angle between the two cylinders 8 is at a minimum of 30° and at a maximum of 120°, the two cantilevers 25 contact the cantilever stopper 36 and are restricted from rotation by the cantilever stopper 36. The present invention can limit the maximum angle between one cantilever 25 and the main cantilever 6 to within a range of 30° to 60°, and the maximum position that the other cantilever 25 can reach is below the angle of 30° to the main cantilever 6.

[0040] A tensioning wheel 12 is provided between the driving pulley 20 and one of the driven pulleys, and the grinding belt 28 is wound around the tensioning wheel 12 simultaneously. The tensioning wheel 12 is used to adjust the tightness of the grinding belt 28. The tensioning wheel 12 is connected to the main cantilever by a slider 13.

[0041] A horizontal chute is provided on the main cantilever 6 and is adapted to fit within the slider 13. The slider 13 can move horizontally along the chute, thereby driving the tensioning wheel 12, which is fixedly connected to the slider 13, to move horizontally. A fastening screw 11 is provided on the slider 13. When the slider 13 stops moving, the fastening screw 11 secures the slider 13 in its position within the chute.

[0042] See also Figure 5-6 As shown, there are two welds on the surface of workpiece 32, namely weld 1 33 and weld 2 38; weld 1 33 is located at the edge of the curved surface of the top surface of workpiece 32 and is curved; weld 2 38 is connected between the curved surface and the bottom and is arc-shaped. The first pass is to grind weld 1 33, and the processing diagram is shown in FIG. Figure 5 As shown, the second pass of grinding weld 2 38, the processing diagram is as follows Figure 5-6 The processing method is:

[0043] The air compressor 14 is turned on and operates to store a sufficient amount of high-pressure gas in the high-pressure gas tank 15. The high-pressure gas enters the two cylinders 8 through the air pipe 10. The air pressure sensor 35 detects that the air pressure in the two cylinders 8 reaches a preset value. The higher the air pressure value, the greater the pressure exerted by the two cylinders 8 on the first driven pulley 7 and the second driven pulley 9, and the closer the grinding belt 28 is to the surface of the workpiece 32.

[0044] The position of the tensioning wheel 12 is adjusted by tightening the screw 11 and the slider 13 , thereby adjusting the tightness of the grinding belt 28 .

[0045] The motor 17 is turned on and works, transmitting power to the driving pulley 20 through the reducer 18, which drives the grinding belt 28 to rotate. The gear position of the reducer 18 is manually adjusted by the shift handle 19 provided on the reducer 18, thereby controlling the speed of the driving pulley 20.

[0046] For the first grinding pass, clamp workpiece 32 to dedicated fixture 31, which is secured to workbench 1 with stop bolts. Adjust guide rail 2 so that weld seam 1 33 is directly below grinding belt 28. Screw 5 is adjusted to lower main boom 6 until grinding belt 28 rests against one end of weld seam 1 33. Rotor 37 is used to adjust weld seam 1 33 so that its direction aligns with the conveying direction of grinding belt 28. Guide rail 2 is controlled to move horizontally, and grinding belt 28 begins to clean and grind weld slag 33 from weld seam 1 33.

[0047] When the grinding belt 28 is located on the concave surface of the weld 33, as shown in FIG. Figure 5 As shown, the first driven pulley 7 moves downward due to its own weight to fit the concave surface of the workpiece 32. At this time, the first driven pulley 7 drives the extended end of the cylinder 8 connected to it to increase in length, resulting in a decrease in the air pressure in the cylinder 8. At this time, the air pressure sensor 35 detects in real time that the air pressure in the cylinder 8 has decreased, and the reversing valve 16 opens and starts working. The high-pressure gas in the high-pressure gas tank 15 is inflated into the cylinder 8 through the reversing valve 16, so that the air pressure in the cylinder 8 increases until it reaches the preset air pressure value before the change, so that the force output by the cylinder 8 is consistent with that before the change, thereby ensuring that the grinding belt 28 is in consistent contact with the surface of the weld 33, and then the reversing valve 16 is closed.

[0048] When the grinding belt 28 is located on the convex surface of the weld 33, the first driven pulley 7 is squeezed by the convex surface of the weld 33, so that the length of the protruding end of the cylinder 8 is shortened, and the corresponding air pressure in the cylinder 8 increases. At this time, the air pressure sensor 35 detects the increase in the air pressure in the cylinder 8, and the reversing valve 16 opens. By controlling the reversing valve 16 to operate, the cylinder 8 is exhausted to the outside, and the air pressure in the cylinder 8 is reduced until it reaches the preset air pressure value. At this time, the force output by the cylinder 8 is the same as before the change, and the degree of contact between the grinding belt 28 and the workpiece surface is the same, and then the reversing valve 16 is closed.

[0049] Therefore, when grinding the concave and convex surfaces of the workpiece 32, the air pressure sensor 35 promptly detects the air pressure changes in the cylinder 8, and controls the reversing valve 16 to inflate and discharge air into the cylinder 8, so that the air pressure in the cylinder 8 is always maintained at the preset pressure, and then the reversing valve 16 is closed, thereby ensuring that the pressure output by the cylinder 8 to the driven pulley is constant, so that the degree of close contact between the grinding belt 28 and the concave and convex surface of the weld 33 is consistent.

[0050] After finishing the weld seam 1 33, the second pass of the weld seam 2 38 is carried out. The rotor 37 rotates and the workbench 1 rotates so that the weld seam 2 38 is parallel to the grinding belt 28. The guide rail 2 is adjusted so that the weld seam 2 38 is directly below the grinding belt 28. The lead screw 5 is adjusted so that the main cantilever 6 is lowered to the end where the grinding belt 28 is close to the weld seam 2 38. Figure 6As shown, the guide rail 2 is controlled to move horizontally. At this time, the grinding belt 28 grinds the second weld 38. In the process of the guide rail 2 driving the workpiece 32 to move, since the second weld 38 is arc-shaped, the length of the protruding end of the cylinder 8 gradually increases, and the corresponding air pressure in the cylinder 8 gradually decreases. At this time, the air pressure sensor 35 detects that the air pressure in the cylinder 8 decreases, and the reversing valve 16 opens. By controlling the reversing valve 16, the air is gradually inflated into the cylinder 8 to gradually increase the air pressure in the cylinder 8, and the air pressure in the cylinder 8 is always kept stable at the preset air pressure value. At this time, the force output by the cylinder 8 is always consistent with that before the change, ensuring that the degree of contact between the grinding belt 28 and the surface of the second weld 38 is always consistent, until the grinding of the second weld 38 is completed, and the reversing valve 16 is closed.

[0051] While grinding, the high-pressure gas in the high-pressure gas tank 15 is ejected through the high-pressure nozzle 34, and the high-pressure gas is sprayed toward the weld to clean the metal debris left by the grinding.

[0052] If the diamond grinding skin 30 on the grinding belt 28 is severely worn, it can be removed and replaced separately.

[0053] See also Figure 7 As shown, when grinding the concave and convex surfaces of the workpiece 32, the height of the concave and convex surfaces is also the working height of the cleaning grinder, which is the vertical distance between the centers of the two cylinders 8. The working height is H, H = L1-L2·cosβ, where L1 is the length of the longer cylinder 8, L2 is the length of the shorter cylinder 8, and β is the angle between the two cantilevers 25. When β = 60°, the maximum working height is Hmax, H max =L max -0.5L min , L max is the longest extension length of cylinder 8, L min It is the shortest extension length of the cylinder 8.

[0054] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art will readily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be encompassed by the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A conformal weld cleaning and grinding device, wherein a horizontal guide rail (2) capable of linear movement is fixedly provided on the upper surface of a base (3), and a workbench (1) capable of rotating on a horizontal plane is fixedly connected to the upper surface of the guide rail (2), wherein the device is characterized by: A horizontal main cantilever (6) is arranged above the workbench (1), the fixed end of the main cantilever (6) is connected to the support column (4) through a vertical screw (5), and the bottom of the support column (4) is fixedly connected to the base (3); an air compressor (14), a high-pressure gas tank (15) and a motor (17) are fixedly arranged on the hanging end of the main cantilever (6), the air outlet of the air compressor (14) is connected to the air inlet of the high-pressure gas tank (15) through an air pipe, the air outlet of the high-pressure gas tank (15) is connected to the high-pressure nozzle (34) through a reversing valve (16), and the reversing valve (16) is also connected to the air inlet (26) and the exhaust port (27) of the two cylinders (8) respectively. The output shaft of the horizontally arranged motor (17) is connected to the driving pulley (20), and the driving pulley (20) Two cylinders (8) and two driven pulleys are arranged below the main cantilever (6). The lower output end of each cylinder (8) is fixedly connected to a driven pulley. The two driven pulleys are parallel to the driving pulley (20). The upper end of the cylinder body of each cylinder (8) is fixedly connected to the lower end of a cantilever (25). The upper ends of the two cantilevers (25) are hinged on the same hinge (22). The hinge (22) is fixedly connected to the main cantilever (6). A spring (24) is connected between the two cantilevers (25). An annular closed grinding belt (28) is fixedly wound around the driving pulley (20) and the two driven pulleys at the same time. A pressure sensor (35) for detecting the air pressure in each cylinder (8) is provided on the reversing valve (16) and the air pipe of each cylinder (8).

2. The conformal weld cleaning and grinding device according to claim 1, characterized in that: A tension wheel (12) is arranged between the driving pulley (20) and one of the driven pulleys. The grinding belt (28) is wound around the tension wheel (12). The tension wheel (12) is connected to the main cantilever (6) through a slider (13).

3. The conformal weld cleaning and grinding device according to claim 2, characterized in that: A horizontal sliding groove matched with the slider (13) is provided on the main cantilever (6). The slider (13) can move horizontally along the sliding groove. A fastening screw is provided on the slider (13).

4. The conformal weld cleaning and grinding device according to claim 1, characterized in that: The output shaft of the motor (17) is connected to the reducer through a coupling, and the output shaft of the reducer is coaxially connected to the driving pulley (20).

5. The conformal weld cleaning and grinding device according to claim 1, characterized in that: The grinding belt (28) is composed of a belt (29) and a diamond grinding leather (30). The back of the belt (29) is tightly fitted and fixed to the driving pulley (20) and the two driven pulleys, and the front of the belt (29) faces outward. A plurality of grooves are evenly spaced on the belt (29), and a diamond grinding leather (30) is fixedly arranged in each groove. The front of the diamond grinding leather (30) protrudes from the front of the belt (29).

6. The conformal weld cleaning and grinding device according to claim 1, characterized in that: The angle between the two cylinders 8 is at least 30 degrees and at most 120 degrees. A cantilever stopper (36) is provided on the main cantilever (6). The cantilever stopper (36) is horizontally slidably connected to the main cantilever (6). When the angle between the two cylinders (8) is at least 30 degrees or at most 120 degrees, the two cantilevers (25) contact the cantilever stopper (36).

7. A grinding method for the conformal weld cleaning and grinding equipment according to claim 1, characterized in that: The weld is located directly below the grinding belt (28), and the air compressor (14) works to store high-pressure gas in the high-pressure gas tank (15). When grinding the concave and convex curved surface of the workpiece, when the air pressure sensor (35) detects the air pressure change in the cylinder (8), the reversing valve (16) is opened, and the high-pressure gas tank (15) is filled and discharged into the cylinder (8), so that the air pressure in the cylinder (8) is maintained at a preset air pressure, ensuring that the pressure output by the cylinder (8) to the driven pulley is constant and the grinding belt (28) is in consistent contact with the concave and convex curved surface.

8. The polishing method according to claim 7, wherein: When the grinding belt (28) is located on the concave surface of the weld, the driven pulley moves downward due to its own weight to fit the concave surface of the workpiece, driving the extended end of the cylinder (8) connected thereto to increase in length. The air pressure sensor (35) detects that the air pressure in the cylinder (8) decreases, and the high-pressure gas tank (15) inflates the cylinder (8).

9. The polishing method according to claim 7, wherein: When the grinding belt (28) is located on the convex surface of the weld, the driven pulley is squeezed by the convex surface, causing the extended end of the cylinder (8) to shorten. The air pressure sensor (35) detects that the air pressure in the cylinder (8) increases, and the cylinder (8) is deflated.

10. The grinding method according to claim 7, 8 or 9, characterized in that: While grinding, the high-pressure gas in the high-pressure gas tank (15) is ejected toward the weld seam through the high-pressure nozzle (34).

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