High-precision positioning device for assembling airplane fixture

Abstract

The utility model discloses a high-precision positioning device for aircraft fixture assembly, which relates to the technical field of assembly positioning and comprises a slide rail, an adjusting block is tightly connected onto the slide rail in a sliding manner, a positioning block is mounted on the adjusting block, an air suction device is mounted on one side of the slide rail, an air injection end of the air suction device is communicated with the adjusting block, and an air outlet end of the air suction device is communicated with the positioning block. Air holes are formed in the contact points of the two ends of the adjusting block and the sliding rails correspondingly, rotating shafts are rotationally connected into the air holes correspondingly, sealing plates facing the position between the two rotating shafts are connected to the two rotating shafts correspondingly, the sealing plates are matched with the sliding rails, and a handle is arranged on the adjusting block. Positioning of the adjusting block on the sliding rail is completed through the air suction device, and the positioning method of adsorption through atmospheric pressure cannot become loose along with use, so that errors of the device are reduced, and movement of the adjusting block can be achieved only by pulling up the handle upwards and adjusting internal and external air pressure during adjustment.

Description

Technical Field

[0001] This utility model relates to the field of assembly positioning technology, specifically a high-precision positioning device for aircraft frame assembly. Background Technology

[0002] Aircraft manufacturing involves the precise assembly of numerous components. These components have complex shapes, high dimensional accuracy requirements, and must meet stringent aerodynamic and structural strength requirements. For example, the assembly accuracy of components such as wings and fuselages directly affects the flight performance and safety of the aircraft. Therefore, the development of aircraft jig assembly technology is key to meeting these high-precision requirements.

[0003] Currently, domestic aircraft assembly still largely relies on manual positioning. Due to the low rigidity of the components, a large number of assembly jigs are required during assembly to ensure the geometric dimensions and shape of the aircraft parts. To ensure fast, efficient, and low-cost assembly of parts, aircraft assembly jigs are designed with a large number of positioners for positioning parts. As the requirements and precision of aircraft manufacturing continue to increase, the precision requirements of each positioner on the aircraft assembly jig are also increasing. The installation error of the support positioner is within ±0.1mm.

[0004] Traditional positioning devices use a screw-type positioning device, which increases in error after prolonged use, requiring parts replacement and maintenance to restore accuracy, which is very cumbersome. Therefore, a high-precision positioning device for aircraft frame assembly has been designed to solve the above problems. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a high-precision positioning device for aircraft frame assembly, so as to solve the technical problem that the accuracy of traditional positioning devices will decrease with use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-precision positioning device for aircraft frame assembly, comprising a slide rail, an adjusting block slidably connected to the top of the slide rail, a positioning block mounted on the adjusting block, an air intake device mounted on one side of the slide rail, and the air jet end of the air intake device communicating with the adjusting block, air holes being opened at the contact points between the two ends of the adjusting block and the slide rail, and rotating shafts being rotatably connected inside the air holes, and sealing plates facing between the two rotating shafts being connected to the two rotating shafts, and the sealing plates cooperating with the slide rail, a handle being provided on the adjusting block, and sealing shafts sliding through the adjusting block being connected to the bottom ends of both sides of the handle, and both sealing shafts cooperating with the corresponding sealing plates, and limit blocks being provided on both sealing shafts, and a spring being connected between each limit block and the adjusting block, the air intake device being a diaphragm compressor.

[0007] By adopting the above technical solution, the suction device is activated, drawing negative pressure into the area between the adjusting block and the slide rail. Under the attraction of atmospheric pressure, the adjusting block is firmly adsorbed onto the slide rail, preventing it from loosening after positioning. When it is necessary to change the position of the adjusting block, the handle is pulled up, causing the sealing shaft to rise and releasing the pressure on the sealing plate. Under the action of atmospheric pressure, the sealing plate rises along the rotating shaft, creating a gap, thereby balancing the pressure inside and outside the adjusting block and releasing the fixing of the adjusting block. At this time, the adjusting block is moved by the handle. After determining the position, the handle is released, and the spring pushes the limit block down, causing the sealing shaft to push the sealing plate back to its original position. As the suction device continues to operate, the adjusting block is re-fixed onto the slide rail.

[0008] The present invention is further provided that the bottom surface of the sealing plate is provided with a rubber coating.

[0009] By adopting the above technical solution, the rubber coating can increase the sealing performance of the sealing plate and the friction between the sealing plate and the slide rail.

[0010] The present invention is further configured such that a threaded shaft is threadedly connected to the positioning block, a top block connected to the threaded shaft is slidably connected to the positioning block, and a scale that cooperates with the top block is provided on the positioning block.

[0011] By adopting the above technical solution, when the device requires adjustments of a small magnitude or more precise precision, the rotating threaded shaft can accurately adjust the position of the top block, achieving more refined positioning operations for the parts. This design can meet the high-precision positioning requirements of parts in aircraft assembly, improving the accuracy and flexibility of positioning. In addition, the scale on the positioning block provides operators with an intuitive position reference, facilitating more accurate control of the top block's movement distance and position, further improving positioning accuracy and consistency, and reducing human error.

[0012] The present invention is further configured such that damping shafts are connected to both sides of the positioning block facing the top block, and spring blocks that cooperate with the top block are connected to the damping shafts.

[0013] By adopting the above technical solution, the damping shaft can provide a certain damping force when the rebound block moves, making the movement of the rebound block more stable and avoiding positional deviation caused by rapid movement or external impact.

[0014] In summary, the present invention has the following main advantages:

[0015] This invention uses an air suction device to position the adjusting block on the slide rail. This positioning method, which uses atmospheric pressure adsorption, will not become loose with use, thereby reducing the error of the device. When adjusting, simply pull up the handle and adjust the internal and external air pressure to move the adjusting block. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a top sectional view of the overall structure of this utility model;

[0018] Figure 3 This is a side sectional view of the overall structure of this utility model;

[0019] Figure 4 For the present utility model Figure 3 Enlarged view of the structure at point A in the middle.

[0020] In the diagram: 1. Slide rail; 2. Adjusting block; 3. Air hole; 4. Rotating shaft; 5. Sealing plate; 6. Sealing shaft; 7. Limiting block; 8. Spring; 9. Handle; 10. Air suction device; 11. Positioning block; 12. Threaded shaft; 13. Top block; 14. Damping shaft; 15. Rebound block. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] The embodiments of this utility model will be described below based on its overall structure.

[0023] A high-precision positioning device for aircraft jig assembly, such as Figure 1-4As shown, the device includes a slide rail 1, an adjusting block 2 tightly slidably connected to the top of the slide rail 1, a positioning block 11 mounted on the adjusting block 2, an air suction device 10 mounted on one side of the slide rail 1, and the jet end of the air suction device 10 connected to the adjusting block 2. Air holes 3 are provided at the contact points between both ends of the adjusting block 2 and the slide rail 1, and rotating shafts 4 are rotatably connected to each air hole 3. Sealing plates 5 facing between the two rotating shafts 4 are connected to both rotating shafts 4, and the sealing plates 5 cooperate with the slide rail 1. A handle 9 is provided on the adjusting block 2, and sealing shafts 6 sliding through the adjusting block 2 are connected to the bottom ends of both sides of the handle 9. Both sealing shafts 6 cooperate with the corresponding sealing plates 5. Limit blocks 7 are provided on both sealing shafts 6, and a spring 8 is connected between each limit block 7 and the adjusting block 2. The air suction device 10 is a diaphragm type. When the compressor and suction device 10 are activated, the area between the adjusting block 2 and the slide rail 1 is drawn into negative pressure. Under the attraction of atmospheric pressure, the adjusting block 2 is firmly attracted to the slide rail 1, preventing the adjusting block 2 from loosening after positioning. When it is necessary to change the position of the adjusting block 2, the handle 9 is pulled up, causing the sealing shaft 6 to rise and release the pressure on the sealing plate 5. Under the action of atmospheric pressure, the sealing plate 5 rises along the rotating shaft 4, exposing a gap, thereby balancing the pressure inside and outside the adjusting block 2 and releasing the fixation of the adjusting block 2. At this time, the adjusting block 2 is moved by the handle 9. After the position is determined, the handle 9 is released. At this time, the spring 8 pushes the limit block 7 down, thereby causing the sealing shaft 6 to push the sealing plate 5 to reset. As the suction device 10 continues to operate, the adjusting block 2 is fixed back on the slide rail 1.

[0024] The bottom surface of the sealing plate 5 is provided with a rubber coating, which can increase the sealing performance of the sealing plate 5 and the friction between the sealing plate 5 and the slide rail 1.

[0025] A threaded shaft 12 is threadedly connected to the positioning block 11, and a top block 13, which is slidably connected to the threaded shaft 12, is also connected to the positioning block 11. The positioning block 11 has graduations that mate with the top block 13. When the device requires adjustments of a small magnitude or greater precision, rotating the threaded shaft 12 can precisely adjust the position of the top block 13, enabling more precise positioning of the parts. This design meets the high-precision positioning requirements of parts in aircraft assembly, improving positioning accuracy and flexibility. Furthermore, the graduations on the positioning block 11 provide operators with an intuitive positional reference, facilitating more accurate control of the movement distance and position of the top block 13, further improving positioning accuracy and consistency, and reducing human error.

[0026] The positioning block 11 is connected to damping shafts 14 on both sides of the side facing the top block 13, and the damping shafts 14 are connected to spring blocks 15 that cooperate with the top block 13. The damping shafts 14 can provide a certain damping force when the spring blocks 15 move, so that the movement of the spring blocks 15 is more stable and the positional deviation caused by rapid movement or external impact is avoided.

[0027] Working principle: When the suction device 10 is activated, it draws negative pressure into the area between the adjusting block 2 and the slide rail 1. Under the attraction of atmospheric pressure, the adjusting block 2 is firmly adsorbed onto the slide rail 1, preventing it from loosening after positioning. When it is necessary to change the position of the adjusting block 2, pull the handle 9 upwards, causing the sealing shaft 6 to rise and releasing the pressure on the sealing plate 5. Under the action of atmospheric pressure, the sealing plate 5 rises along the rotating shaft 4, creating a gap, thereby balancing the pressure inside and outside the adjusting block 2 and releasing the fixation on the adjusting block 2. At this time, the adjusting block 2 can be moved by the handle 9. After moving and determining the position, release the handle 9. At this time, the spring 8 pushes the limit block 7 down, thereby causing the sealing shaft 6 to push the sealing plate 5 to reset. As the suction device 10 continues to operate, the adjusting block 2 is re-fixed on the slide rail 1. When the device needs to make smaller or more precise adjustments, rotate the threaded shaft 12 on the positioning block 11 to complete the adjustment of the top block 13. The damping shaft 14 can provide a certain damping force when the spring block 15 moves, making the movement of the spring block 15 more stable and avoiding positional deviation caused by rapid movement or external impact.

[0028] Based on the above structure, although embodiments of the present utility model have been shown and described in this embodiment, these specific embodiments are merely explanations of the present utility model and are not intended to limit the utility model. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present utility model, but such modifications, substitutions, and variations are protected by patent law as long as they fall within the scope of the claims of the present utility model.

Claims

1. A high-precision positioning device for the assembly of an aircraft jig, comprising a sliding rail (1), characterised in that: The upper surface of the slide rail (1) is closely connected with an adjusting block (2), the adjusting block (2) is provided with a positioning block (11), one side of the slide rail (1) is provided with an air suction device (10), the air outlet end of the air suction device (10) is communicated with the adjusting block (2), the contact points of the two ends of the adjusting block (2) and the slide rail (1) are provided with air holes (3), the air holes (3) are rotatably connected with rotating shafts (4), the rotating shafts (4) are connected with sealing plates (5) facing each other, the sealing plates (5) are matched with the slide rail (1), the adjusting block (2) is provided with a handle (9), the bottom ends of the two sides of the handle (9) are connected with sealing shafts (6) slidingly penetrating the adjusting block (2), the sealing shafts (6) are matched with the corresponding sealing plates (5), the sealing shafts (6) are provided with limiting blocks (7), and the limiting blocks (7) and the adjusting block (2) are connected with springs (8).

2. A high precision positioning device for aircraft jig assembly according to claim 1, characterised in that: The air suction device (10) is a diaphragm compressor.

3. A high precision positioning device for aircraft jig assembly according to claim 1, characterised in that: The bottom surface of the sealing plate (5) is provided with a rubber coating.

4. A high precision positioning device for aircraft jig assembly according to claim 1, characterised in that: The positioning block (11) is threadedly connected with a threaded shaft (12), and the positioning block (11) is slidingly connected with a top block (13) connected with the threaded shaft (12).

5. A high precision positioning device for aircraft jig assembly according to claim 4, characterised in that: The positioning block (11) is provided with a scale matched with the top block (13).

6. A high precision positioning device for aircraft jig assembly according to claim 4, characterised in that: The two sides of the positioning block (11) are connected with damping shafts (14) facing the top block (13), and the damping shafts (14) are connected with rebound blocks (15) matched with the top block (13).

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