A polishing machine for finishing an aircraft flap slide rail

Abstract

This invention relates to the field of polishing technology, specifically a polishing machine for precision machining of aircraft flap rails. It includes a polishing machine table, on which a robotic arm is movably mounted. A mounting frame is connected to the front end of the robotic arm. A rotary motor is fixedly mounted on the upper inner wall of the mounting frame. An electric push rod is mounted to the output end of the rotary motor via a connecting block. A conical movable block is fixedly mounted at the top end of the electric push rod. A polishing head is fixedly mounted to the front end of the movable block, and a rotating gear is fixedly mounted on the movable block. An abutment support assembly is located inside the mounting frame. This abutment support assembly is used to stabilize the movable block. The core technology involves the robotic arm driving the polishing assembly to achieve precise polishing. The abutment support assembly ensures polishing stability, and a moving cleaning assembly collects waste. The entire system works in tandem to achieve efficient and high-precision precision machining of the flap rail.

Description

Technical Field

[0001] This invention relates to the field of polishing technology, specifically to a polishing machine for precision machining of aircraft flap rails. Background Technology

[0002] The flap rail is a core precision transmission component in the flap system of an aircraft wing. Its surface roughness, geometric tolerances, and structural stability directly determine the smoothness of flap deployment and retraction, thus affecting the aircraft's flight safety and control precision. In the precision machining process of the aircraft flap rail, polishing is a crucial step to ensure its surface quality and fit accuracy. Specialized polishing machines are required to precisely polish key areas such as the guide surface and arc transition surfaces of the rail to meet the stringent requirements of the aerospace industry for precision parts.

[0003] Currently, existing polishing machines for precision machining of aircraft flap rails still have many technical defects in practical applications, making it difficult to meet the high-precision machining requirements of the rails: First, the polishing heads of these machines mostly adopt a single drive structure, lacking a stable support mechanism. During high-speed rotary polishing and feed adjustment, problems such as chatter and offset are prone to occur, leading to a decrease in the accuracy of the polishing head's motion trajectory. This, in turn, results in uneven texture and out-of-tolerance form and position on the rail surface, affecting machining accuracy. Second, existing support structures are mostly rigid connections, unable to adaptively adjust according to the feed displacement and polishing pressure of the polishing head. When there is a deviation in the rail blank allowance or a momentary impact occurs during polishing, the support force is easily unstable, which not only damages the polishing head but also affects the surface machining quality of the rail. Third, the existing cleaning mechanisms for metal shavings and waste abrasives generated during polishing are mostly fixed and cannot adjust the cleaning range and posture synchronously with the movement of the polishing head. This results in incomplete waste collection, with some waste easily adhering to the rail surface, causing secondary scratches, or entering the moving parts of the equipment, aggravating wear and reducing the service life of the equipment.

[0004] To address the aforementioned issues, innovative designs are urgently needed based on existing approaches. Summary of the Invention

[0005] The purpose of this invention is to provide a polishing machine for precision machining of aircraft flap rails, so as to solve the problems mentioned in the background art. The technical solution of this invention provides a solution that is significantly different from the existing technology, addressing the problem that the existing technical solutions are too simplistic.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a polishing machine for precision machining of aircraft flap rails, comprising a polishing machine table, a robotic arm movably mounted on the polishing machine table, a mounting frame connected to the front end of the robotic arm, a rotating motor fixedly mounted on the upper end of the inner wall of the mounting frame, an electric push rod mounted on the output end of the rotating motor via a connecting block, a conical movable block fixedly mounted on the top end of the electric push rod, a polishing head fixedly mounted on the front end of the movable block, and a rotating gear fixedly mounted on the movable block; An abutment support assembly is disposed inside the mounting frame and is used to stabilize the movable block; A mobile cleaning assembly, disposed inside the mounting bracket, is used to collect polishing debris.

[0007] Preferably, the abutment support assembly includes a mounting plate, which is fixedly mounted on the inner wall of the mounting frame. The mounting plate is circular in plan view, and limit grooves are formed at equal angles on the mounting plate. A rotating ring is concentrically arranged in the inner circle of the mounting plate.

[0008] Preferably, a connecting rod is fixedly installed on the rotating ring at equal angles, the connecting rod is slidably installed in the limiting groove, and a limiting block is fixedly installed on the rotating ring at equal angles.

[0009] Preferably, the abutment support assembly further includes a support rod, which is rotatably mounted on the mounting plate via a torque shaft, and the support rod is engaged with a limiting block via an opening groove.

[0010] Preferably, the front end of the support rod is provided with an abutment block, the abutment block is slidably installed in the track groove opened at the front end of the support rod, and an abutment rod is elastically limited and slidably installed in the abutment block, the abutment rod being connected to the abutment block.

[0011] Preferably, an oil cylinder is fixedly installed inside the support rod. The piston rod of the oil cylinder is connected to the abutment rod through a pressure spring. The oil cylinder is connected to the second oil cylinder through a fluid delivery hose.

[0012] Preferably, the second oil cylinder is arranged at an equal angle in the mounting plate, and the internal piston rod of the second oil cylinder is connected to the connecting rod.

[0013] Preferably, the mobile cleaning component includes a mobile frame, which is slidably installed inside the mounting frame. The lower end of the mobile frame is provided with an air suction pipe, and a sliding groove is provided on the mobile frame. Toothed blocks are symmetrically distributed at equal intervals on the inner wall of the sliding groove.

[0014] Preferably, the mobile cleaning assembly further includes a rotating gear, which is rotatably mounted inside the mounting frame, and a half gear is connected to the bottom of the rotating gear via a rod.

[0015] Preferably, the rotating gear meshes with the rotary gear, the half gear meshes with the toothed block inside the movable frame, and the movable frame is symmetrical about the vertical center line of the mounting frame.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention achieves omnidirectional adaptive and stable support for the polishing head by setting up an abutment support component: the mounting plate has a circular structure, and with the sliding cooperation of the rotating ring, connecting rod and limiting groove, the angle of the support rod can be adjusted to adapt to different polishing postures of the polishing head; the support rod is set to rotate via a torsion shaft and is positioned by the engagement of the limiting block and the slot, ensuring the stability of the support angle; the elastic cooperation between the abutment block and the abutment rod, combined with the hydraulic linkage of oil cylinder one and oil cylinder two, can adaptively adjust the support force according to the feed displacement and polishing pressure of the polishing head, effectively absorbing the instantaneous impact during the polishing process, avoiding the polishing head from chattering or shifting, ensuring the accuracy of the polishing head's movement trajectory, and thus ensuring that the surface roughness and geometric tolerances of the flap slide rail meet the design requirements. The design aims to reduce machining defects such as scratches and uneven textures on the slide rail surface. In the abutment support assembly, hydraulic cylinder one and hydraulic cylinder two are connected by a fluid delivery hose to form a hydraulic linkage structure. When the polishing head is fed, the movable block drives the rotating gear to rotate, indirectly linking the rotating ring to rotate. This, through the connecting rod, pushes the piston rod two to move, thereby adjusting the oil pressure in hydraulic cylinder one. This achieves adaptive matching of the abutment rod support force, avoiding component wear caused by rigid support. The pressure spring between the abutment rod and the abutment block can further buffer the polishing impact, protecting the polishing head and support assembly. At the same time, multiple sets of support rods are distributed at equal angles to achieve uniform annular support for the movable block, dispersing the force during the polishing process, reducing the deformation of the movable block and polishing head, and extending the service life of the polishing head and the entire polishing machine. 2. The mobile cleaning component and polishing drive mechanism of this invention are linked, eliminating the need for an additional power source. The structure is compact and highly coordinated: the rotating gear and the rotary gear mesh with each other. When the polishing head is working, the rotating gear drives the rotary gear to rotate synchronously, which in turn drives the half gear to rotate. The half gear meshes with the tooth block in the sliding groove of the moving frame. Combined with the symmetrical design of the moving frame about the vertical center line of the mounting frame, the moving frame can reciprocate and slide, thereby driving the suction pipe to move synchronously. This allows the suction pipe to follow the movement trajectory of the polishing head and collect metal chips, waste abrasive, and other waste materials generated during the polishing process from all directions. This prevents waste materials from adhering to the surface of the slide rail and causing secondary scratches. At the same time, it reduces the amount of waste materials entering the moving parts of the equipment, reduces equipment wear, and improves the cleanliness of the processing environment. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the mounting bracket of the present invention; Figure 3 This is a three-dimensional structural diagram of the installation disk of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the support rod of the present invention; Figure 5 This is a schematic diagram of the internal structure of the support rod of the present invention; Figure 6 This is a schematic diagram of the internal structure of the installation disk of the present invention; Figure 7 This is a schematic diagram of the exploded structure of the mobile frame of the present invention.

[0018] In the diagram: 1. Polishing machine stand; 2. Robotic arm; 3. Mounting frame; 4. Rotary motor; 5. Electric push rod; 6. Movable block; 7. Polishing head; 8. Rotating gear; 9. Mounting plate; 10. Limiting groove; 11. Rotating ring; 12. Connecting rod; 13. Limiting block; 14. Support rod; 15. Torque shaft; 16. Abutment block; 17. Track groove; 18. Abutment rod; 19. Oil cylinder one; 20. Piston rod one; 21. Pressure spring; 22. Oil cylinder two; 23. Piston rod two; 24. Moving frame; 25. Sliding groove; 26. Tooth block; 27. Rotating gear; 28. Half gear. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by the present invention in order to achieve the intended purpose, the following detailed description is provided in conjunction with the accompanying drawings and preferred embodiments, based on the specific implementation methods, structures, features and effects of the present invention.

[0020] Please see Figures 1-7 The present invention provides a technical solution: a polishing machine for precision machining of aircraft flap slide rails, including a polishing machine table 1, a mechanical arm 2 movably mounted on the polishing machine table 1, a mounting frame 3 connected to the front end of the mechanical arm 2, a rotary motor 4 fixedly mounted on the upper end of the inner wall of the mounting frame 3, an electric push rod 5 mounted on the output end of the rotary motor 4 through a connecting block, a conical movable block 6 fixedly mounted on the top end of the electric push rod 5, a polishing head 7 fixedly mounted on the front end of the movable block 6, and a rotating gear 8 fixedly mounted on the movable block 6; The abutment support assembly is located inside the mounting bracket 3 and is used to stabilize the movable block 6. The movable cleaning component is located inside the mounting bracket 3 and is used to collect polishing debris.

[0021] In one embodiment of the present invention, the abutment support component includes a mounting plate 9, which is fixedly disposed on the inner wall of the mounting frame 3. The mounting plate 9 is circular in plan view. Limiting grooves 10 are formed at equal angles on the mounting plate 9, and a rotating ring 11 is concentrically disposed in the inner ring of the mounting plate 9.

[0022] In one embodiment of the present invention, a connecting rod 12 is fixedly installed on the rotating ring 11 at equal angles, the connecting rod 12 is slidably installed in the limiting groove 10, and a limiting block 13 is fixedly installed on the rotating ring 11 at equal angles.

[0023] As one embodiment of the present invention, the abutment support assembly further includes a support rod 14, which is rotatably mounted on the mounting plate 9 via a torque shaft 15, and the support rod 14 is engaged with the limiting block 13 through an opening slot.

[0024] In one embodiment of the present invention, a stop block 16 is provided at the front end of the support rod 14. The stop block 16 is slidably installed in the track groove 17 opened at the front end of the support rod 14. A stop rod 18 is elastically limited and slidably installed in the stop block 16. The stop rod 18 is connected to the stop block 16.

[0025] In one embodiment of the present invention, an oil cylinder 19 is fixedly installed inside the support rod 14. The piston rod 20 inside the oil cylinder 19 is connected to the abutment rod 18 through a pressure spring 21. The oil cylinder 19 is connected to the oil cylinder 22 through a fluid delivery hose.

[0026] In one embodiment of the present invention, the second oil cylinder 22 is arranged at an equal angle in the mounting plate 9, and the internal piston rod 23 of the second oil cylinder 22 is connected to the connecting rod 12.

[0027] The abutment support assembly is used to stabilize the movable block 6 in all directions during the operation of the polishing head 7, preventing the movable block 6 from shifting due to rotation and force, thus ensuring polishing accuracy. The mounting plate 9 of the abutment support assembly is fixed to the inner wall of the mounting frame 3 and has a ring-shaped structure. The limiting groove 10 opened at equal angles on it provides a limiting sliding track for the connecting rod 12. The rotating ring 11, which is concentrically arranged on the inner ring of the mounting plate 9, cooperates with the limiting groove 10 through the connecting rod 12 fixed at equal angles on it to realize the concentric limiting rotation of the rotating ring 11 within the mounting plate 9. The rotating ring 11 can be adjusted in angle with subsequent power drive.

[0028] As one embodiment of the present invention, the mobile cleaning component includes a mobile frame 24, which is slidably installed inside the mounting frame 3. An air suction pipe is provided at the lower end of the mobile frame 24, and a sliding groove 25 is provided on the mobile frame 24. Tooth blocks 26 are symmetrically distributed at equal intervals on the inner wall of the sliding groove 25.

[0029] As one embodiment of the present invention, the mobile cleaning assembly further includes a rotating gear 27, which is rotatably mounted inside the mounting frame 3, and a half gear 28 is connected to the bottom of the rotating gear 27 via a rod.

[0030] In one embodiment of the present invention, the rotating gear 27 meshes with the rotating gear 8, the half gear 28 meshes with the tooth block 26 inside the movable frame 24, and the movable frame 24 is symmetrical about the vertical center line of the mounting frame 3.

[0031] The robotic arm 2 moves the mounting frame 3 and polishing components, including the rotating motor 4, electric push rod 5, movable block 6, and polishing head 7, to the polishing position. The rotating motor 4 and electric push rod 5 work together to drive the polishing head 7 to rotate and engage with the slide rail for polishing. During this process, the movable block 6 drives the rotating gear 8 to rotate, triggering the linkage of the abutment support component mounting plate 9, rotating ring 11, and support rod 14. Through the coordination of oil cylinder 19, oil cylinder 21, and the mechanical structure, the movable block 6 achieves self-adaptive stability, ensuring polishing accuracy. On the other hand, it drives the half gear 28 of the moving cleaning component, including the moving frame 24, rotating gear 27, and half gear 28, to rotate, causing the moving frame 24 to move back and forth, collecting waste debris in real time through the air intake pipe. The three work together to achieve precise, efficient, and clean finishing of the aircraft flap slide rail, meeting the high-precision requirements of slide rail polishing.

[0032] Working principle: The polishing machine base 1 serves as the overall installation foundation, providing stable support for all components. Based on the polishing requirements of the aircraft flap rails, the operator controls the robotic arm 2 to flexibly adjust its position and angle, causing the mounting frame 3 to move the front-end polishing head 7 to the area of ​​the rail to be polished, achieving precise positioning for polishing. Once positioning is complete, the rotary motor 4 starts, and its output end drives the electric push rod 5 to rotate synchronously via the connecting block. This, in turn, drives the movable block 6 and the polishing head 7 fixed at the front end of the movable block 6 to rotate, providing rotational power for the polishing operation. Simultaneously, the electric push rod 5 can flexibly extend and retract to adjust the vertical position of the movable block 6 according to the polishing thickness and precision requirements of the slide rail, ensuring that the polishing head 7 maintains appropriate contact pressure with the slide rail surface, guaranteeing that the polishing effect meets the precision machining standards of the flap slide rail. During this process, the movable block 6 synchronously drives the rotating gear 8 fixed on it to rotate, providing power for the subsequent linkage of the support components and the driving of the moving cleaning components. The limiting block 13, fixed at equal angles on the rotating ring 11, cooperates with the support rod 14, which is rotatably mounted on the mounting plate 9 via the torque shaft 15. When the rotating ring 11 rotates, the limiting block 13 rotates synchronously, engaging with the slot on the support rod 14, thereby driving the support rod 14 to rotate around the torque shaft 15. This adjusts the orientation of the front end of the support rod 14 abutting the block 16, allowing multiple support rods 14 to move towards or away from the movable block 6 simultaneously, adapting to the positional changes of the movable block 6. When the rotating ring 11 rotates, it drives the connecting rod 12 to move within the limiting groove 10. The piston rod moves step by step, and then the connecting rod 12 squeezes the piston rod 23. The displacement of the piston rod 23 transfers the oil inside the oil cylinder 22 to the oil cylinder 19 through the infusion hose, thereby pushing the piston rod 20 to move and squeezing the pressure spring 22 between the piston rod 16 and the abutment rod 18. This increases the supporting force of the abutment block 16 on the movable block 6, ensuring that the abutment rod 18 always maintains stable contact with the movable block 6. This achieves all-round, self-adaptive stability of the movable block 6, avoids polishing deviation caused by the displacement of the movable block 6 during the polishing process, and ensures the precision machining of the flap slide rail. When the movable block 6 drives the rotating gear 8 to rotate, the rotating gear 8 synchronously drives the rotating gear 27 to rotate, which in turn drives the half gear 28 connected to the bottom of the rotating gear 27 by the rod to rotate synchronously. The half gear 28 meshes with the toothed block 26 on the inner wall of the sliding groove 25 inside the moving frame 24. Since only a part of the half gear 28 has teeth, when the half gear 28 rotates, its teeth mesh with the toothed block 26, causing the moving frame 24 to slide along the inside of the mounting frame 3. When the toothless area of ​​the half gear 28 rotates to the position corresponding to the toothed block 26, the moving frame 24 slides in the opposite direction under the action of inertia and subsequent meshing force, thereby realizing the left and right reciprocating movement of the moving frame 24. During the reciprocating movement of the moving frame 24, it is aligned with the polishing contact part of the polishing head 7 and the flap slide rail in real time. Through the negative pressure generated by the suction pipe, the metal waste and other impurities generated during the polishing process are adsorbed and collected, realizing the real-time cleaning and collection of waste, ensuring a clean environment for polishing operations, reducing the damage of waste to equipment and processed parts, and improving the operational stability and service life of the polishing machine.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A polishing machine for precision machining of aircraft flap rails, comprising a polishing machine table (1), characterized in that: A robotic arm (2) is movably mounted on the polishing machine (1). A mounting frame (3) is connected to the front end of the robotic arm (2). A rotating motor (4) is fixedly mounted on the upper end of the inner wall of the mounting frame (3). An electric push rod (5) is mounted on the output end of the rotating motor (4) through a connecting block. A conical movable block (6) is fixedly mounted on the top end of the electric push rod (5). A polishing head (7) is fixedly mounted on the front end of the movable block (6). A rotating gear (8) is fixedly mounted on the movable block (6). An abutment support assembly is disposed inside the mounting frame (3) and is used to stabilize the movable block (6); A mobile cleaning component is disposed inside the mounting bracket (3) and is used to collect polishing debris.

2. The polishing machine for precision machining of aircraft flap rails according to claim 1, characterized in that: The abutment support assembly includes a mounting plate (9), which is fixedly mounted on the inner wall of the mounting frame (3). The mounting plate (9) is circular in plan view. Limiting grooves (10) are formed at equal angles on the mounting plate (9). A rotating ring (11) is concentrically arranged in the inner circle of the mounting plate (9).

3. A polishing machine for precision machining of aircraft flap rails according to claim 2, characterized in that: A connecting rod (12) is fixedly installed at equal angles on the rotating ring (11). The connecting rod (12) is slidably installed in the limiting groove (10). A limiting block (13) is fixedly installed at equal angles on the rotating ring (11).

4. A polishing machine for precision machining of aircraft flap rails according to claim 3, characterized in that: The abutment support assembly also includes a support rod (14), which is rotatably mounted on the mounting plate (9) via a torque shaft (15), and the support rod (14) is engaged with the limiting block (13) through an opening slot.

5. A polishing machine for precision machining of aircraft flap rails according to claim 4, characterized in that: The front end of the support rod (14) is provided with an abutment block (16), the abutment block (16) is slidably installed in the track groove (17) opened at the front end of the support rod (14), and an abutment rod (18) is elastically limited and slidably installed in the abutment block (16), the abutment rod (18) is connected to the abutment block (16).

6. A polishing machine for precision machining of aircraft flap rails according to claim 5, characterized in that: The support rod (14) has an oil cylinder (19) fixedly installed inside. The piston rod (20) inside the oil cylinder (19) is connected to the abutment rod (18) through a pressure spring (21). The oil cylinder (19) is connected to the oil cylinder (22) through a liquid infusion hose.

7. A polishing machine for precision machining of aircraft flap rails according to claim 6, characterized in that: The second oil cylinder (22) is set at an equal angle in the mounting plate (9), and the internal piston rod (23) of the second oil cylinder (22) is connected to the connecting rod (12).

8. A polishing machine for precision machining of aircraft flap rails according to claim 1, characterized in that: The mobile cleaning component includes a mobile frame (24), which is slidably installed inside the mounting frame (3). The lower end of the mobile frame (24) is provided with an air suction pipe. A sliding groove (25) is provided on the mobile frame (24), and toothed blocks (26) are symmetrically distributed at equal intervals on the inner wall of the sliding groove (25).

9. A polishing machine for precision machining of aircraft flap rails according to claim 8, characterized in that: The mobile cleaning assembly also includes a rotating gear (27), which is rotatably mounted inside the mounting bracket (3), and a half gear (28) is connected to the bottom of the rotating gear (27) by a rod.

10. A polishing machine for precision machining of aircraft flap rails according to claim 9, characterized in that: The rotating gear (27) meshes with the rotating gear (8), the half gear (28) meshes with the tooth block (26) inside the moving frame (24), and the moving frame (24) is symmetrical about the vertical center line of the mounting frame (3).

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