A flame spray protective fixture for aircraft parts production

By improving the flame spraying protection fixture, the height and position of the fixture are adjusted using a motor and push rod assembly, solving the existing fixture compatibility problem, improving production efficiency and spraying quality, protecting non-sprayed areas, and extending the fixture life.

CN224405453UActive Publication Date: 2026-06-26CHANGZHOU HENGLI SURFACE TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGZHOU HENGLI SURFACE TECH CO LTD
Filing Date
2025-07-11
Publication Date
2026-06-26

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Abstract

The utility model relates to the technical field of aviation manufacturing discloses a flame spraying protection fixture for aircraft part production, including work table, the top of work table is installed with clamping assembly, the top fixedly connected with fixed frame of work table, the middle part of fixed frame is installed with heat dissipation subassembly, the clamping assembly includes fixed block, the top fixedly connected with drive motor no.
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Description

Technical Field

[0001] This utility model relates to the field of aviation manufacturing technology, and in particular to a flame spraying protective fixture for the production of aircraft parts. Background Technology

[0002] Flame spraying technology, as a surface protection and strengthening process, has developed rapidly in recent years and has become a very active branch of metal surface engineering. Using a flame as a heat source, metal and non-metal materials are heated to a molten state, and then propelled by a high-speed airflow to form a mist, which is then sprayed onto the substrate. The tiny molten particles impact the substrate, causing plastic deformation and forming a superimposed deposition coating; this process is called flame spraying.

[0003] Flame spraying, as a material surface strengthening and protection technology, can form a coating on the surface of aircraft parts, enhancing their wear resistance, corrosion resistance, and other properties. Protective fixtures are crucial auxiliary equipment for ensuring the precise and efficient implementation of this process, affecting both the quality of the coating and the smoothness of the production flow.

[0004] Because aircraft parts are diverse in type, size, and height, ranging from small and precise internal engine parts to large wing connection structures, existing fixtures are usually made of simple components, making it difficult to quickly and accurately adapt to the clamping height requirements of different parts. Operators often need to spend a lot of time adjusting or changing fixtures, which affects production efficiency. To address this issue, a flame-sprayed protective fixture for aircraft parts production is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a flame spraying protective fixture for aircraft parts production, aiming to improve the problem in the prior art that it is difficult to quickly and accurately adapt to the clamping height requirements of different parts.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A flame-spraying protective fixture for aircraft parts production includes a worktable, a clamping assembly mounted on the top of the worktable, a fixed frame fixedly connected to the top of the worktable, and a heat dissipation assembly mounted in the middle of the fixed frame.

[0008] The clamping assembly includes a fixing block, which is fixedly connected to the top of the worktable. A drive motor is fixedly connected to the top of the fixing block, and a gear is fixedly connected to the output end of the drive motor. A slide rod is fixedly connected to the top of the fixing block, and a slider is slidably connected to the outside of the slide rod. An electric push rod is fixedly connected to the top of the slide rod, and a rack is fixedly connected to the outside of the electric push rod, with the rack meshing with the gear.

[0009] As a further description of the above technical solution:

[0010] The clamping assembly also includes a mounting block, which is fixedly connected to the output end of the electric push rod 2. A connecting rod is rotatably connected to the inner side of the mounting block, and a clamping block is fixedly connected to the end of the connecting rod. An electric push rod 3 is fixedly connected to the outside of the mounting block, and a connecting block is fixedly connected to the outside of the electric push rod 3.

[0011] As a further description of the above technical solution:

[0012] The heat dissipation assembly includes a housing, which is fixedly connected to the middle of the mounting frame. A second drive motor is fixedly connected to the top of the housing, and a fan blade is fixedly connected to the output end of the second drive motor. The fan blade is rotatably connected inside the housing.

[0013] As a further description of the above technical solution:

[0014] Both ends of the slide rod are fixedly connected to limit blocks, and the top of the limit blocks is fixedly connected to a support plate. The electric push rod is slidably connected to the middle of the support plate.

[0015] As a further description of the above technical solution:

[0016] The electric push rod 2 is externally fixedly connected to a connecting frame, and the rack is slidably connected to the middle of the connecting frame;

[0017] As a further description of the above technical solution:

[0018] An electric push rod is fixedly connected to the middle of the fixed frame, and a protective plate is fixedly connected to the output end of the electric push rod. The protective plate is slidably connected to the top of the workbench.

[0019] As a further description of the above technical solution:

[0020] The bottom of the workbench is fixedly connected to a support column;

[0021] As a further description of the above technical solution:

[0022] The clamping block is rotatably connected inside the connecting block.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, through the coordinated operation of drive motor one, gears, racks, slide rods, and electric push rod two, the height of the clamping block can be flexibly adjusted to adapt to the clamping position requirements of aircraft parts of different sizes and heights. This improves the versatility of the fixture for diverse aircraft parts and helps to improve production efficiency.

[0025] 2. In this utility model, the electric push rod drives the protective plate to accurately block the non-sprayed area according to the spraying area of ​​the part, effectively preventing the flame and spraying material from damaging the non-sprayed parts of the part and improving the spraying quality. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a flame-sprayed protective fixture for aircraft parts production proposed in this utility model.

[0027] Figure 2 This is a schematic diagram of the gear structure of a flame-sprayed protective fixture for aircraft parts production proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the fan blade structure of a flame spraying protective fixture for aircraft parts production proposed in this utility model.

[0029] Figure 4 This is a schematic diagram of the clamping block of a flame spraying protective fixture for aircraft parts production proposed in this utility model.

[0030] Legend:

[0031] 1. Support column; 2. Workbench; 3. Fixing frame; 4. Electric push rod one; 5. Protective plate; 6. Support plate; 7. Fixing block; 8. Slide rod; 9. Limiting block; 10. Rack; 11. Gear; 12. Electric push rod two; 13. Connecting block; 14. Drive motor one; 15. Slider; 16. Connecting frame; 17. Housing; 18. Fan blade; 19. Drive motor two; 20. Clamping block; 21. Connecting rod; 22. Mounting block; 23. Electric push rod three. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 , Figure 2 and Figure 4An embodiment of this utility model is provided: a flame spraying protective fixture for aircraft parts production, including a workbench 2, a clamping assembly installed on the top of the workbench 2, a fixed frame 3 fixedly connected to the top of the workbench 2, and a heat dissipation assembly installed in the middle of the fixed frame 3.

[0034] The clamping assembly includes a fixed block 7, which is fixedly connected to the top of the worktable 2. A drive motor 14 is fixedly connected to the top of the fixed block 7, and a gear 11 is fixedly connected to the output end of the drive motor 14. A slide rod 8 is fixedly connected to the top of the fixed block 7, and a slider 15 is slidably connected to the outside of the slide rod 8. An electric push rod 12 is fixedly connected to the top of the slide rod 8, and a rack 10 is fixedly connected to the outside of the electric push rod 12. The rack 10 meshes with the gear 11. After the drive motor 14 is started, it drives the gear 11 to rotate, thereby realizing that the rack 10 moves linearly along the slide rod 8. The slider 15 slides on the slide rod 8, which helps to assist the rack 10 to move smoothly. This drives the electric push rod 12 and its connected mounting block 22 to move up and down, thereby flexibly adjusting the horizontal distance of the clamping block 20 to adapt to parts of different sizes, greatly improving the versatility of the clamp for different aircraft parts. The clamping assembly also includes a mounting block 22, which is fixedly connected to the output end of the electric push rod 22. A connecting rod 21 is rotatably connected to the inner side of the mounting block 22, and a clamping block 20 is fixedly connected to the end of the connecting rod 21. An electric push rod 3 23 is fixedly connected to the outside of the mounting block 22, and a connecting block 13 is fixedly connected to the outside of the electric push rod 3 23. When the electric push rod 3 23 is activated, it pushes the connecting block 13 to slide horizontally, thereby driving the connecting rod 21 to rotate, realizing the clamping or releasing operation of the clamping block 20 on the part. By using the electric push rod 3 23 to control the clamping and releasing of the clamping block 20, the clamping force can be precisely controlled according to the shape and material of the part, avoiding damage to the part due to improper clamping force. At the same time, the operation is simple and efficient, and the clamping and fixing of the part can be completed quickly, improving production efficiency. Limiting blocks 9 are fixedly connected to both ends of the slide rod 8, and a support plate 6 is fixedly connected to the top of the limiting block 9. The electric push rod 2 12 is slidably connected to the middle of the support plate 6. The electric push rod 12 is externally fixedly connected to a connecting frame 16. A rack 10 is slidably connected to the middle of the connecting frame 16. When the rack 10 moves linearly along the slide rod 8 due to the rotation of the gear 11, the connecting frame 16 provides a precise guiding path for the rack 10, preventing it from shifting or wobbling during movement. An electric push rod 4 is fixedly connected to the middle of the fixed frame 3. A protective plate 5 is fixedly connected to the output end of the electric push rod 4. The protective plate 5 is slidably connected to the top of the workbench 2. During flame spraying, the flame carries high-temperature spraying material and sprays it at high speed onto the surface of the part. The protective plate 5, pushed by the extension and retraction of the electric push rod 4, can move to a suitable position according to the part's spraying requirements, tightly shielding areas that do not need spraying. This prevents high-temperature flames and spraying material from adhering to non-spraying areas, avoiding damage to these areas. A support column 1 is fixedly connected to the bottom of the workbench 2. A clamping block 20 is rotatably connected inside the connecting block 13.

[0035] Reference Figure 1 and Figure 3The heat dissipation component includes a housing 17, which is fixedly connected to the middle of the mounting frame 3. A second drive motor 19 is fixedly connected to the top of the housing 17, and a fan blade 18 is fixedly connected to the output end of the second drive motor 19. The fan blade 18 is rotatably connected inside the housing 17. This component can quickly dissipate the large amount of heat generated by flame spraying on the fixture and part surfaces. During flame spraying, the parts and fixtures are exposed to high temperatures for extended periods. Excessive temperature can easily cause changes in the material properties of the parts, affecting their mechanical strength and precision, and also accelerating the wear and aging of the fixture. The rotation of the fan blade 18 effectively reduces the temperature, ensuring that the parts complete the spraying process within a suitable temperature range, guaranteeing part quality, and extending the service life of the fixture.

[0036] Working principle: The part to be painted is placed on the support plate 6. Then, the drive motor 14 is started to drive the gear 11 to rotate. Since the gear 11 meshes with the rack 10, the rotation of the gear 11 will cause the rack 10 to move linearly along the slide bar 8. The slider 15 slides on the slide bar 8. The electric push rod 12 drives the mounting block 22 to move up and down, thereby adjusting the height of the clamping block 20 to adapt to the clamping position requirements of aircraft parts of different sizes and heights. The electric push rod 23 is started. The extension and retraction of the electric push rod 23 pushes the connecting block 13 to move. At the same time, the connecting rod 21 drives the clamping block 20 to slide inside the connecting block 13, realizing the clamping or releasing operation of the clamping block 20 on the aircraft parts, completing the clamping and fixing of the parts.

[0037] The protective plate 5 is slidably pushed by the telescopic pusher 4. The operator can move the protective plate 5 to a suitable position according to the sprayed and unsprayed areas of the part, blocking the unsprayed areas and preventing damage from the flame and spray material during flame spraying. After flame spraying, the drive motor 19 is started to drive the fan blades 18 to rotate at high speed, creating airflow and wind to carry heat away from the fixture and the parts, thus cooling the area and improving spraying quality and fixture lifespan.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flame-spraying protective fixture for aircraft parts production, comprising a worktable (2), characterized in that: A clamping assembly is installed on the top of the workbench (2), and a fixing frame (3) is fixedly connected to the top of the workbench (2). A heat dissipation assembly is installed in the middle of the fixing frame (3). The clamping assembly includes a fixing block (7), which is fixedly connected to the top of the workbench (2). A drive motor (14) is fixedly connected to the top of the fixing block (7). A gear (11) is fixedly connected to the output end of the drive motor (14). A slide rod (8) is fixedly connected to the top of the fixing block (7). A slider (15) is slidably connected to the outside of the slide rod (8). An electric push rod (12) is fixedly connected to the top of the slide rod (8). A rack (10) is fixedly connected to the outside of the electric push rod (12). The rack (10) meshes with the gear (11).

2. The flame-spraying protective fixture for aircraft parts production according to claim 1, characterized in that: The clamping assembly also includes a mounting block (22), which is fixedly connected to the output end of the electric push rod two (12). A connecting rod (21) is rotatably connected to the inner side of the mounting block (22), and a clamping block (20) is fixedly connected to the end of the connecting rod (21). An electric push rod three (23) is fixedly connected to the outside of the mounting block (22), and a connecting block (13) is fixedly connected to the outside of the electric push rod three (23).

3. The flame-spraying protective fixture for aircraft parts production according to claim 1, characterized in that: The heat dissipation assembly includes a housing (17), which is fixedly connected to the middle of the fixing frame (3). A second drive motor (19) is fixedly connected to the top of the housing (17), and a fan blade (18) is fixedly connected to the output end of the second drive motor (19). The fan blade (18) is rotatably connected inside the housing (17).

4. The flame-spraying protective fixture for aircraft parts production according to claim 1, characterized in that: Both ends of the slide rod (8) are fixedly connected to limit blocks (9), and the top of the limit block (9) is fixedly connected to a support plate (6). The electric push rod (12) is slidably connected to the middle of the support plate (6).

5. A flame-spraying protective fixture for aircraft parts production according to claim 1, characterized in that: The electric push rod 2 (12) is externally fixedly connected to a connecting frame (16), and the rack (10) is slidably connected to the middle of the connecting frame (16).

6. A flame-spraying protective fixture for aircraft parts production according to claim 1, characterized in that: An electric push rod (4) is fixedly connected to the middle of the fixed frame (3), and a protective plate (5) is fixedly connected to the output end of the electric push rod (4). The protective plate (5) is slidably connected to the top of the workbench (2).

7. A flame-spraying protective fixture for aircraft parts production according to claim 1, characterized in that: The bottom of the workbench (2) is fixedly connected to a support column (1).

8. A flame-spraying protective fixture for aircraft parts production according to claim 2, characterized in that: The clamp (20) is rotatably connected inside the connecting block (13).