Device and method for machining surfaces of aluminum plate parts of aircrafts

Abstract

The invention discloses a device and a method for machining surfaces of aluminum plate parts of aircrafts, and relates to the technical field of part machining. According to the aircraft aluminum plate part surface machining device and method, four sets of supporting legs are included and arranged in a rectangular array, hollow tables are fixedly installed on the outer walls of the four sets of supporting legs, aluminum plates are placed on the tops of the hollow tables, and I-shaped frames are fixedly installed at the top ends of the four sets of hollow tables. According to the aircraft aluminum plate part surface machining device and method, through the adsorption structure, negative pressure can be generated in the hollow table, an aluminum plate is tightly fixed to the top of the hollow table, the aluminum plate is prevented from moving, and the surface of the aluminum plate can be prevented from being shielded by a clamp relative to clamping and fixing of the clamp; according to the aluminum plate polishing device, the surface of an aluminum plate can be comprehensively polished, sweeps generated in the polishing process can be extracted through the slag extraction unit, the sweeps are prevented from splashing to the periphery of equipment, and the surrounding sanitary environment can be guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of parts processing, and in particular to a device and a method for surface processing of aircraft aluminum plate parts. Background Art

[0002] Aluminum alloy decorative panels, also known as aluminum alloy corrugated panels or ceiling panels, are made of aluminum and aluminum alloy as raw materials and are processed into metal plates of various cross-sections by roller cold pressing. They are widely used in aviation, home decoration and other fields. After the existing aluminum plates are processed, their surfaces need to be polished to ensure that the surface is smooth and fine, with soft and gorgeous color.

[0003] Chinese patent document CN220680425U discloses a continuous polishing device for aluminum plates, comprising a bottom plate, support plates fixedly connected at the center positions of the left and right sides of the outer wall of the bottom plate, a horizontal plate fixedly connected at the top of the two support plates, a groove penetrating and arranged on the right side of the bottom of the outer wall of the horizontal plate, a second cylinder fixedly connected to the left side of the inner wall of the groove, a second sliding block fixedly connected to the left side of the second cylinder, and a vertical plate fixedly connected to the bottom of the second sliding block. When using the polishing device, first place the aluminum plate to be polished on top of the lower clamping plate, then move the movable plate to support the aluminum plate, then start the first cylinder to work, push the first sliding block to move in the first sliding groove, the working principle of the second sliding groove on the right is the same as the first sliding groove, when the first sliding block moves, it can be adjusted according to the thickness of the aluminum plate to clamp the aluminum plate.

[0004] However, during the use of the above-mentioned polishing equipment, the clamping plate will block a part of the surface of the aluminum plate, making it impossible for the polishing wheel to fully polish its surface. Secondly, the debris generated during the polishing process will fly around the equipment, affecting the surrounding sanitary environment. Summary of the invention

[0005] The purpose of the present invention is to provide a device and a method for surface processing of aircraft aluminum plate parts to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for surface processing of aircraft aluminum plate parts, comprising support legs, wherein the support legs are provided in four groups and arranged in a rectangular array, the outer walls of the four groups of support legs are fixedly installed with hollow platforms, an aluminum plate is placed on the top of the hollow platform, a work-shaped frame is fixedly installed on the top of the four groups of hollow platforms, the work-shaped frame is provided with a slide groove A, a convex frame is slidably installed in the slide groove A, a slide groove B is provided at the bottom of the convex frame, a slider is slidably installed in the slide groove B, and also includes an electric telescopic rod fixedly installed at the bottom of the slider, a fixed frame is fixedly installed at the free end of the electric telescopic rod, a motor is fixedly installed at the inner bottom of the fixed frame, a movable sleeve is fixedly installed on the output shaft of the motor, a polishing disk is arranged at the bottom of the movable sleeve, a protective cover fixedly installed on the outer wall of the fixed frame, the protective cover is used to prevent debris from splashing around the equipment, an adsorption structure installed on the hollow platform, the adsorption structure is used to fix the aluminum plate to the top of the hollow platform, and a slag extraction unit is installed on the top of the protective cover, and the slag extraction unit is used to extract the debris.

[0007] Preferably, the adsorption structure includes a bidirectional threaded rod, a threaded block, a push-pull rod, a piston plate and a crank. The bidirectional threaded rod is rotatably installed on both sides of the hollow table, the threaded block is threadedly installed on the outer wall of the bidirectional threaded rod, the piston plate is slidably installed on the inner wall of the hollow table, one end of the push-pull rod is hingedly installed on the top of the threaded block, and the other end of the push-pull rod is hingedly installed on the bottom of the piston plate. There are two groups of cranks that are respectively fixed on both ends of the bidirectional threaded rod, and there are two groups of threaded blocks and push-pull rods and they are symmetrically arranged on the left and right. An air hole is opened on the top of the hollow table, which can drive the interior of the hollow table to generate negative pressure. The aluminum plate is tightly fixed to the top of the hollow table through atmospheric pressure. During the polishing process of the hollow table, the movement of the aluminum plate is prevented. Compared with the clamping and fixing of the clamp, the clamp can be prevented from blocking the surface of the aluminum plate, and the surface of the aluminum plate can be fully polished.

[0008] Preferably, the slag extraction unit includes an exhaust pump, an exhaust hose and an exhaust hose. The exhaust pump is fixedly installed on the top of the convex frame, one end of the exhaust hose is fixedly connected to the input end of the exhaust pump, one end of the exhaust hose is fixedly connected to the output end of the exhaust pump, and the other end of the exhaust hose passes through the top of the protective cover and communicates with the interior of the protective cover. Waste chips generated during the polishing process can be extracted to prevent the waste chips from splashing around the equipment, thereby ensuring the surrounding sanitary environment.

[0009] Preferably, the movable sleeve is located on the inner side of the protective cover, and the movable sleeve includes a connecting shaft, a movable block, a movable sleeve and a spring. The connecting shaft is rotatably installed on the bottom of the fixed frame, the movable block is fixedly installed on the bottom end of the connecting shaft, the movable sleeve is sleeved on the outer wall of the connecting shaft, the spring is fixedly installed on the bottom of the movable block, and the polishing disc is fixedly installed on the bottom outer wall of the movable sleeve. When the electric telescopic rod drives the polishing disc to descend, the polishing disc makes flexible contact with the surface of the aluminum plate to avoid excessive descent of the polishing disc and indentation on the surface of the aluminum plate, thereby ensuring the processing quality of the aluminum plate.

[0010] Preferably, the protective cover is provided with six groups of movable openings, movable balls are movably installed in the six groups of movable openings, and the six groups of movable openings and the six groups of movable balls are arranged in a ring array.

[0011] Preferably, a first servo motor is fixedly installed on one side of the work frame, and a first reciprocating screw is rotatably installed on both sides of the slide groove A. The output shaft of the first servo motor is fixedly installed on one end of the first reciprocating screw, and the convex frame is threadedly installed on the outer wall of the first reciprocating screw.

[0012] Preferably, a second servo motor is fixedly installed on the front side of the convex frame, and a second reciprocating screw is rotatably installed on the front and rear sides of the slide groove B. The output shaft of the second servo motor is fixedly installed on one end of the second reciprocating screw, and the slider is threadedly installed on the outer wall of the second reciprocating screw.

[0013] Preferably, a waste box is placed on the top of the work-type frame, the top of the waste box is provided with an opening, the top of the waste box is covered with a box cover, the box cover is provided with an air outlet, a filter mesh cloth is fixedly installed in the air outlet, and the other end of the air outlet hose passes through one side of the waste box and communicates with the interior of the waste box.

[0014] Preferably, both sides of the waste box and both sides of the box cover are provided with insertion holes, and latches are inserted into the insertion holes.

[0015] A surface processing method for aircraft aluminum plate parts, wherein the aluminum plate is placed on the top of a hollow table, and a crank is manually twisted to drive a bidirectional threaded rod to rotate. The rotation of the bidirectional threaded rod drives two sets of threaded blocks and one end of a push-pull rod to move toward each other, so that the other end of the push-pull rod and a piston plate move downward, so that negative pressure is generated above the piston plate and the air holes of the hollow table, and the bottom of the aluminum plate is adsorbed. The aluminum plate is fixed to the top of the hollow table by atmospheric pressure, and an electric telescopic rod is started. The output shaft of the electric telescopic rod drives a fixed frame, a protective cover, a movable ball, a motor and a polishing disc to descend, so that the polishing disc can contact the aluminum plate. As the free end of the electric telescopic rod descends, the protective cover covers the outside of the polishing disc. Start the motor, and the output shaft of the motor drives the movable sleeve and the polishing disc to rotate, and the rotating polishing disc polishes the surface of the aluminum plate. By starting the first servo motor and the second servo motor, the output shaft of the first servo motor drives the first reciprocating screw to rotate, and the rotation of the first reciprocating screw drives the convex frame to move back and forth, and the output shaft of the second servo motor drives the second reciprocating screw to rotate, and the rotation of the second reciprocating screw drives the slider, the electric telescopic rod, the motor, and the polishing disc to move back and forth, so that the polishing disc can move in all directions on the top of the aluminum plate for polishing, and by starting the vacuum pump, the vacuum pump extracts the polishing waste through the vacuum hose and the protective cover, and transports the polishing waste to the inside of the waste box through the air outlet hose for storage.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The device and method for surface processing of aircraft aluminum plate parts can drive the inside of the hollow table to generate negative pressure through the adsorption structure, and the aluminum plate is tightly fixed on the top of the hollow table through atmospheric pressure. During the polishing process of the hollow table, the aluminum plate is prevented from moving. Compared with the clamping and fixing of the fixture, the fixture can avoid blocking the surface of the aluminum plate, and the surface of the aluminum plate can be fully polished.

[0018] (2) The device and method for processing the surface of aircraft aluminum plate parts use a movable sleeve to enable the polishing disc to be in flexible contact with the surface of the aluminum plate when the electric telescopic rod drives the polishing disc to descend, thereby preventing the polishing disc from descending too much and causing indentations on the surface of the aluminum plate, thereby ensuring the processing quality of the aluminum plate.

[0019] (3) The device and method for surface processing of aircraft aluminum plate parts can extract the waste chips generated during the polishing process through a slag extraction unit, thereby preventing the waste chips from splashing around the equipment and ensuring a sanitary environment around the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 is a cross-sectional view of the hollow platform of the present invention;

[0023] Figure 3 for Figure 2 Front view of

[0024] Figure 4 is a cross-sectional view of the protective cover of the present invention;

[0025] Figure 5 It is a cross-sectional view of the I-shaped frame and the convex frame of the present invention;

[0026] Figure 6 It is a cross-sectional view of a waste box and a box cover of the present invention.

[0027] 1. Support leg; 2. Hollow table; 3. Aluminum plate; 4. I-shaped frame; 5. Convex frame; 6. Electric telescopic rod; 7. Fixed frame; 8. Protective cover; 9. Movable ball; 10. Motor; 11. Connecting shaft; 12. Movable block; 13. Movable sleeve; 14. Spring; 15. Vacuum pump; 16. Vacuum hose; 17. Air outlet hose; 18. Waste box; 19. Box cover; 20. Filter cloth; 21. Latch; 22. First servo motor; 23. First reciprocating screw; 24. Second servo motor; 25. Second reciprocating screw; 26. Slider; 27. Polishing disk; 28. Bidirectional threaded rod; 29. ​​Threaded block; 30. Push-pull rod; 31. Piston plate; 32. Crank. DETAILED DESCRIPTION

[0028] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0029] See also Figure 1-6The present invention provides a technical solution: a device for processing the surface of aircraft aluminum plate parts, comprising support legs 1, the support legs 1 are four groups and are arranged in a rectangular array, the outer walls of the four groups of support legs 1 are fixedly installed with hollow platforms 2, the top of the hollow platforms 2 is placed with aluminum plates 3, the tops of the four groups of hollow platforms 2 are fixedly installed with work-shaped frames 4, the work-shaped frames 4 are provided with a slide groove A, a convex frame 5 is slidably installed in the slide groove A, the bottom of the convex frame 5 is provided with a slide groove B, a slider 26 is slidably installed in the slide groove B, and also includes an electric telescopic fixedly installed at the bottom of the slider 26 Rod 6, the free end of the electric telescopic rod 6 is fixedly installed with a fixed frame 7, the inner bottom of the fixed frame 7 is fixedly installed with a motor 10, the output shaft of the motor 10 is fixedly installed with a movable sleeve, the bottom of the movable sleeve is provided with a polishing disk 27, a protective cover 8 fixedly installed on the outer wall of the fixed frame 7, the protective cover 8 is used to prevent debris from splashing around the equipment, an adsorption structure installed on the hollow platform 2, the adsorption structure is used to fix the aluminum plate 3 to the top of the hollow platform 2, a slag extraction unit installed on the top of the protective cover 8, and the slag extraction unit is used to extract debris.

[0030] The adsorption structure includes a bidirectional threaded rod 28, a threaded block 29, a push-pull rod 30, a piston plate 31 and a crank 32. The bidirectional threaded rod 28 is rotatably installed on both sides of the hollow platform 2, the threaded block 29 is threadedly installed on the outer wall of the bidirectional threaded rod 28, and the piston plate 31 is slidably installed on the inner wall of the hollow platform 2. One end of the push-pull rod 30 is hingedly installed on the top of the threaded block 29, and the other end of the push-pull rod 30 is hingedly installed on the bottom of the piston plate 31. There are two groups of cranks 32, which are respectively fixedly installed on both ends of the bidirectional threaded rod 28, and the threaded block 29 and the push-pull rod 30 each have two groups and are symmetrically arranged on the left and right. An air hole is opened on the top of the hollow platform 2, which can drive the interior of the hollow platform 2 to generate negative pressure. The aluminum plate 3 is tightly fixed to the top of the hollow platform 2 through atmospheric pressure. During the polishing process of the hollow platform 2, the aluminum plate 3 is prevented from moving. Compared with the clamping and fixing of the clamp, the clamp can be prevented from blocking the surface of the aluminum plate 3, and the surface of the aluminum plate 3 can be fully polished.

[0031] The slag extraction unit includes an exhaust pump 15, an exhaust hose 16 and an exhaust hose 17. The exhaust pump 15 is fixedly installed on the top of the convex frame 5. One end of the exhaust hose 16 is fixedly connected to the input end of the exhaust pump 15. One end of the exhaust hose 17 is fixedly connected to the output end of the exhaust pump 15. The other end of the exhaust hose 16 passes through the top of the protective cover 8 and communicates with the interior of the protective cover 8. The waste chips generated during the polishing process can be extracted to prevent the waste chips from splashing around the equipment, thereby ensuring the surrounding sanitary environment.

[0032] The movable sleeve is located on the inner side of the protective cover 8, and the movable sleeve includes a connecting shaft 11, a movable block 12, a movable sleeve 13 and a spring 14. The connecting shaft 11 is rotatably installed at the bottom of the fixed frame 7, the movable block 12 is fixedly installed at the bottom of the connecting shaft 11, the movable sleeve 13 is sleeved on the outer wall of the connecting shaft 11, and the spring 14 is fixedly installed at the bottom of the movable block 12. The polishing disc 27 is fixedly installed on the bottom outer wall of the movable sleeve 13. When the electric telescopic rod 6 drives the polishing disc 27 to descend, the polishing disc 27 makes flexible contact with the surface of the aluminum plate 3 to avoid excessive descent of the polishing disc 27 and indentation on the surface of the aluminum plate 3, thereby ensuring the processing quality of the aluminum plate 3.

[0033] The protective cover 8 is provided with six groups of movable openings, and movable balls 9 are movably installed in the six groups of movable openings. The six groups of movable openings and the six groups of movable balls 9 are arranged in a ring array.

[0034] A first servo motor 22 is fixedly installed on one side of the work frame 4, and a first reciprocating screw 23 is rotatably installed on both sides of the slide groove A. The output shaft of the first servo motor 22 is fixedly installed on one end of the first reciprocating screw 23, and the convex frame 5 is threadedly installed on the outer wall of the first reciprocating screw 23.

[0035] A second servo motor 24 is fixedly installed on the front side of the convex frame 5, and a second reciprocating screw 25 is rotatably installed on the front and rear sides of the slide groove B. The output shaft of the second servo motor 24 is fixedly installed on one end of the second reciprocating screw 25, and the slider 26 is threadedly installed on the outer wall of the second reciprocating screw 25.

[0036] A waste box 18 is placed on the top of the workpiece frame 4. The top of the waste box 18 is provided with an opening. The top of the waste box 18 is covered with a box cover 19. The box cover 19 is provided with an air outlet. A filter mesh cloth 20 is fixedly installed in the air outlet. The other end of the air outlet hose 17 passes through one side of the waste box 18 and communicates with the interior of the waste box 18.

[0037] Both sides of the waste box 18 and both sides of the box cover 19 are provided with insertion holes, and latches 21 are inserted into the insertion holes.

[0038] A method for processing the surface of aircraft aluminum plate parts, wherein an aluminum plate 3 is placed on the top of a hollow table 2, and a crank 32 is manually twisted to drive a bidirectional threaded rod 28 to rotate. The rotation of the bidirectional threaded rod 28 drives two sets of threaded blocks 29 and one end of a push-pull rod 30 to move toward each other, so that the other end of the push-pull rod 30 and a piston plate 31 move downward, so that a negative pressure is generated above the piston plate 31 and the air holes of the hollow table 2, and the bottom of the aluminum plate 3 is adsorbed. The aluminum plate 3 is fixed to the top of the hollow table 2 by atmospheric pressure, and an electric telescopic rod 6 is started. The output shaft of the electric telescopic rod 6 drives a fixed frame 7, a protective cover 8, a movable ball 9, a motor 10 and a polishing disc 27 to descend, so that the polishing disc 27 can contact the aluminum plate 3. As the free end of the electric telescopic rod 6 descends, the protective cover 8 covers the outside of the polishing disc 27. By starting the motor 1 0, the output shaft of the motor 10 drives the movable sleeve and the polishing disk 27 to rotate, and the rotating polishing disk 27 polishes the surface of the aluminum plate 3, by starting the first servo motor 22 and the second servo motor 24, the output shaft of the first servo motor 22 drives the first reciprocating screw 23 to rotate, and the rotation of the first reciprocating screw 23 drives the convex frame 5 to move back and forth, and the output shaft of the second servo motor 24 drives the second reciprocating screw 25 to rotate, and the rotation of the second reciprocating screw 25 drives the slider 26, the electric telescopic rod 6, the motor 10, and the polishing disk 27 to move back and forth, so that the polishing disk 27 can move in all directions on the top of the aluminum plate 3 for polishing, by starting the vacuum pump 15, the vacuum pump 15 extracts the polishing waste through the vacuum hose 16 and the protective cover 8, and the polishing waste is transported to the inside of the waste box 18 through the air outlet hose 17 for storage.

[0039] Working principle: the aluminum plate 3 is placed on the top of the hollow table 2, and the crank 32 is manually twisted to drive the bidirectional threaded rod 28 to rotate. The rotation of the bidirectional threaded rod 28 drives the two sets of threaded blocks 29 and one end of the push-pull rod 30 to move toward each other, so that the other end of the push-pull rod 30 and the piston plate 31 move downward, so that the upper part of the piston plate 31 and the air hole of the hollow table 2 generate negative pressure, which adsorbs the bottom of the aluminum plate 3, and fixes the aluminum plate 3 to the top of the hollow table 2 by atmospheric pressure. By starting the electric telescopic rod 6, the output shaft of the electric telescopic rod 6 drives the fixed frame 7, the protective cover 8, the movable ball 9, the motor 10 and the polishing disk 27 to descend, so that the polishing disk 27 can contact with the aluminum plate 3. As the free end of the electric telescopic rod 6 descends, the protective cover 8 will cover the outside of the polishing disk 27. By starting the motor 10, the output shaft of the motor 10 drives the movable sleeve and the polishing disk 27 to rotate, and the rotating polishing disk 27 contacts the aluminum plate 3. The surface of the plate 3 is polished by starting the first servo motor 22 and the second servo motor 24. The output shaft of the first servo motor 22 drives the first reciprocating screw 23 to rotate. The rotation of the first reciprocating screw 23 drives the convex frame 5 to move back and forth, and the output shaft of the second servo motor 24 drives the second reciprocating screw 25 to rotate. The rotation of the second reciprocating screw 25 drives the slider 26, the electric telescopic rod 6, the motor 10, and the polishing disc 27 to move back and forth, so that the polishing disc 27 can move in all directions on the top of the aluminum plate 3 for polishing. By starting the vacuum pump 15, the vacuum pump 15 extracts the polishing waste through the vacuum hose 16 and the protective cover 8, and transports the polishing waste to the inside of the waste box 18 through the air outlet hose 17 for storage. When there are a lot of waste chips in the waste box 18, the pin 21 is manually removed from the socket, and the box cover 19 is manually opened upward, so that the waste chips in the waste box 18 can be cleaned.

[0040] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A device for processing the surface of aircraft aluminum plate parts, comprising support legs (1), wherein the support legs (1) are provided in four groups and arranged in a rectangular array, wherein the outer walls of the four groups of support legs (1) are all fixedly mounted with hollow platforms (2), an aluminum plate (3) is placed on the top of the hollow platforms (2), a mold frame (4) is fixedly mounted on the top of the four groups of hollow platforms (2), the mold frame (4) is provided with a slide groove A, a convex frame (5) is slidably mounted in the slide groove A, a slide groove B is provided at the bottom of the convex frame (5), a slider (26) is slidably mounted in the slide groove B, and the device is characterized in that: Also includes: An electric telescopic rod (6) is fixedly mounted on the bottom of the slider (26), a fixed frame (7) is fixedly mounted on the free end of the electric telescopic rod (6), a motor (10) is fixedly mounted on the inner bottom of the fixed frame (7), a movable sleeve is fixedly mounted on the output shaft of the motor (10), and a polishing disc (27) is provided at the bottom of the movable sleeve; A protective cover (8) fixedly mounted on the outer wall of the fixed frame (7), the protective cover (8) being used to prevent debris from splashing around the device; An adsorption structure installed on the hollow platform (2), used to fix the aluminum plate (3) on the top of the hollow platform (2); A slag extraction unit is installed on the top of the protective cover (8), and is used to extract debris.

2. The device for surface processing of aircraft aluminum plate parts according to claim 1, characterized in that: The adsorption structure comprises a bidirectional threaded rod (28), a threaded block (29), a push-pull rod (30), a piston plate (31) and a crank (32); the bidirectional threaded rod (28) is rotatably mounted on both sides of the hollow platform (2); the threaded block (29) is threadedly mounted on the outer wall of the bidirectional threaded rod (28); the piston plate (31) is slidably mounted on the inner wall of the hollow platform (2); one end of the push-pull rod (30) is hingedly mounted on the top of the threaded block (29); the other end of the push-pull rod (30) is hingedly mounted on the bottom of the piston plate (31); the crank (32) has two groups, which are respectively fixedly mounted on the two ends of the bidirectional threaded rod (28); the threaded block (29) and the push-pull rod (30) have two groups, which are symmetrically arranged on the left and right; and an air hole is opened on the top of the hollow platform (2).

3. The device for surface processing of aircraft aluminum plate parts according to claim 2, characterized in that: The slag extraction unit comprises an air extraction pump (15), an air extraction hose (16) and an air outlet hose (17); the air extraction pump (15) is fixedly mounted on the top of the convex frame (5); one end of the air extraction hose (16) is fixedly connected to the input end of the air extraction pump (15); one end of the air outlet hose (17) is fixedly connected to the output end of the air extraction pump (15); and the other end of the air extraction hose (16) passes through the top of the protective cover (8) and communicates with the interior of the protective cover (8).

4. The device for surface processing of aircraft aluminum plate parts according to claim 3, characterized in that: The movable sleeve is located on the inner side of the protective cover (8), and comprises a connecting shaft (11), a movable block (12), a movable sleeve (13) and a spring (14); the connecting shaft (11) is rotatably mounted on the bottom of the fixed frame (7); the movable block (12) is fixedly mounted on the bottom end of the connecting shaft (11); the movable sleeve (13) is sleeved on the outer wall of the connecting shaft (11); the spring (14) is fixedly mounted on the bottom of the movable block (12); and the polishing disc (27) is fixedly mounted on the bottom outer wall of the movable sleeve (13).

5. The device for surface processing of aircraft aluminum plate parts according to claim 4, characterized in that: The protective cover (8) is provided with six groups of movable openings, and movable balls (9) are movably installed in the six groups of movable openings. The six groups of movable openings and the six groups of movable balls (9) are arranged in a ring array.

6. The device for surface processing of aircraft aluminum plate parts according to claim 5, characterized in that: A first servo motor (22) is fixedly mounted on one side of the work frame (4), and first reciprocating screws (23) are rotatably mounted on both sides of the slide groove A. The output shaft of the first servo motor (22) is fixedly mounted on one end of the first reciprocating screw (23), and the convex frame (5) is threadedly mounted on the outer wall of the first reciprocating screw (23).

7. The device for surface processing of aircraft aluminum plate parts according to claim 6, characterized in that: A second servo motor (24) is fixedly mounted on the front side of the convex frame (5), a second reciprocating screw (25) is rotatably mounted on the front and rear sides of the slide groove B, an output shaft of the second servo motor (24) is fixedly mounted on one end of the second reciprocating screw (25), and a slider (26) is threadedly mounted on the outer wall of the second reciprocating screw (25).

8. The device for surface processing of aircraft aluminum plate parts according to claim 7, characterized in that: A waste box (18) is placed on the top of the workpiece frame (4), the top of the waste box (18) is provided with an opening, the top of the waste box (18) is covered with a box cover (19), the box cover (19) is provided with an air outlet, a filter cloth (20) is fixedly installed in the air outlet, and the other end of the air outlet hose (17) passes through one side of the waste box (18) and communicates with the interior of the waste box (18).

9. The device for surface processing of aircraft aluminum plate parts according to claim 8, characterized in that: Both sides of the waste box (18) and both sides of the box cover (19) are provided with insertion holes, and latches (21) are inserted into the insertion holes.

10. The method for surface processing of aircraft aluminum plate parts according to claim 9, characterized in that: The aluminum plate (3) is placed on the top of the hollow table (2), and the crank (32) is manually twisted to drive the bidirectional threaded rod (28) to rotate. The rotation of the bidirectional threaded rod (28) drives the two sets of threaded blocks (29) and one end of the push-pull rod (30) to move toward each other, so that the other end of the push-pull rod (30) and the piston plate (31) move downward, so that negative pressure is generated above the piston plate (31) and the air holes of the hollow table (2), and the bottom of the aluminum plate (3) is adsorbed. The aluminum plate (3) is fixed to the top of the hollow platform (2) by atmospheric pressure, and the electric telescopic rod (6) is started. The output shaft of the electric telescopic rod (6) drives the fixed frame (7), the protective cover (8), the movable ball (9), the motor (10) and the polishing disc (27) to descend, so that the polishing disc (27) can contact the aluminum plate (3). As the free end of the electric telescopic rod (6) descends, the protective cover (8) covers the outer side of the polishing disc (27). By starting the motor (10), the motor The output shaft of the first servo motor (22) drives the movable sleeve and the polishing disc (27) to rotate, and the rotating polishing disc (27) polishes the surface of the aluminum plate (3). By starting the first servo motor (22) and the second servo motor (24), the output shaft of the first servo motor (22) drives the first reciprocating screw (23) to rotate, and the rotation of the first reciprocating screw (23) drives the convex frame (5) to reciprocate left and right, while the output shaft of the second servo motor (24) drives the second reciprocating screw (25) to rotate. The rotation of the second reciprocating screw (25) drives the slider (26), the electric telescopic rod (6), the motor (10), and the polishing disc (27) to move back and forth, thereby enabling the polishing disc (27) to move in all directions on the top of the aluminum plate (3) for polishing. By starting the vacuum pump (15), the vacuum pump (15) extracts the polishing waste through the vacuum hose (16) and the protective cover (8), and transports the polishing waste through the air outlet hose (17) to the inside of the waste box (18) for storage.

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