Pneumatic clamp for aviation thin-wall part
By designing the adjustment and clamping mechanisms of the pneumatic fixture, precise positioning and uniform clamping of thin-walled aerospace parts were achieved, solving the deformation problem of existing fixtures in the processing of complex shapes and improving processing accuracy and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 涿州科时达电气设备有限公司
- Filing Date
- 2025-06-03
- Publication Date
- 2026-05-12
AI Technical Summary
Existing aerospace thin-walled part fixtures are difficult to achieve precise positioning and uniform clamping when machining complex curved surfaces or irregular shapes, resulting in deformation and reduced machining accuracy, especially in multi-angle adsorption or clamping scenarios where they are not adaptable enough.
A pneumatic clamp for thin-walled aerospace components was designed, comprising an adjustment mechanism and a clamping mechanism. The sliding of the slide plate and the fixed rod is driven by a cylinder, and the angle adjustment of the rotating ball sleeve and the suction cup is combined to achieve flexible and adaptive clamping of the surface of the thin-walled component.
It improves the adaptability and machining accuracy of the fixture, ensures the stability of thin-walled parts during multi-angle adsorption or clamping, avoids deformation, and improves machining efficiency and quality.
Smart Images
Figure CN224223690U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of clamping technology, specifically to a pneumatic clamping fixture for thin-walled aerospace parts. Background Technology
[0002] In the field of aerospace manufacturing, the machining of thin-walled components is a critical and challenging task. Due to their inherent structural characteristics—thin walls and low rigidity—aerospace thin-walled components (such as wing skins and engine blades) require extremely high precision in positioning and clamping during machining. Suitable fixtures must not only ensure the stability of the thin-walled components during machining but also prevent deformation caused by excessive or uneven clamping forces, thus ensuring machining accuracy and product quality. Therefore, fixtures used for machining aerospace thin-walled components are crucial to the development of the entire aerospace manufacturing industry.
[0003] However, existing fixtures for thin-walled aerospace parts often fail to achieve precise positioning and uniform clamping when machining thin-walled aerospace parts with complex curved surfaces or irregular shapes. Many fixtures lack effective adjustment mechanisms and cannot be flexibly adjusted according to the specific shape and machining requirements of the thin-walled parts. This leads to localized stress concentration during machining, which in turn causes deformation of the thin-walled parts. In addition, the clamping mechanism design of some fixtures is not reasonable enough and cannot adapt well to some scenarios that require multi-angle adsorption or clamping, affecting the accuracy and efficiency of machining. Utility Model Content
[0004] Therefore, this utility model provides a pneumatic clamp for thin-walled aerospace parts to solve the problem that the existing technology cannot adapt well to some scenarios that require multi-angle adsorption or clamping.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] According to a first aspect of the present invention, a pneumatic clamp for thin-walled aerospace components includes an adjustment mechanism, the adjustment mechanism including a mounting frame, a guide rail fixedly connected to the inner wall of the mounting frame, and a first cylinder fixedly connected to the top of the mounting frame; and a clamping mechanism including a fixing rod, the surface of the fixing rod being slidably connected to the interior of the mounting frame, and a limit block provided at the upper end of the fixing rod.
[0007] Furthermore, the adjustment mechanism also includes a mounting component, one side of which is fixedly connected to the output end of the first cylinder.
[0008] Furthermore, a sliding plate is fixedly connected to the lower end of the mounting component, and a sliding groove is provided at the bottom of the sliding plate.
[0009] Furthermore, the inner wall of the sliding groove is slidably connected to the surface of the guide rail, and a locking member is fixedly connected to the surface of the sliding plate, with one side of the locking member overlapping the surface of the fixing rod.
[0010] Furthermore, a limiting member is fixedly connected to the inner wall of the mounting bracket, and one side of the limiting member overlaps with the side of the fixing rod away from the locking member.
[0011] Furthermore, the clamping mechanism further includes a rotating ball sleeve, the inner wall of which is rotatably connected to a rotating ball.
[0012] Furthermore, a suction cup is fixedly connected to the bottom of the rotating ball, and an air inlet is provided on the surface of the suction cup.
[0013] Furthermore, a second cylinder is provided on the surface of the rotating ball sleeve, and the output end of the second cylinder overlaps with the surface of the rotating ball.
[0014] This utility model has the following advantages: By setting the rotating ball sleeve and rotating ball in the clamping mechanism, the angle of the suction cup can be adjusted so that the angle of the suction cup can adapt to the surface shape of different thin-walled aerospace parts. At the same time, during the adjustment process, the first motor can be started, so that the first motor drives the locking part to disengage from the fixing rod, thereby adjusting the height of the fixing rod, and then adjusting the height of different suction cups, further expanding the adjustable range of the suction cup position, improving the adaptability of the clamp, and making it easier to use. Attached Figure Description
[0015] Figure 1 This is a front view structural diagram of a pneumatic clamp for thin-walled aerospace components provided by this utility model.
[0016] Figure 2 A bottom view of the structure of a pneumatic clamp for thin-walled aerospace components provided by this utility model.
[0017] Figure 3 An exploded view of the pneumatic clamp for thin-walled aerospace components provided by this utility model.
[0018] Figure 4 This is a top-view diagram showing the exploded state of a pneumatic clamp for thin-walled aerospace components provided by this utility model.
[0019] Figure 5 This utility model provides a schematic diagram of the clamping mechanism of a pneumatic clamp for thin-walled aerospace components.
[0020] In the diagram: 11. Mounting bracket; 12. Guide rail; 13. First cylinder; 14. Mounting component; 15. Slide plate; 16. Sliding groove; 17. Locking component; 18. Limiting component; 21. Fixing rod; 22. Rotating ball sleeve; 23. Rotating ball; 24. Suction cup; 25. Air inlet; 26. Second cylinder. Detailed Implementation
[0021] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0022] Example 1
[0023] like Figures 1 to 5 As shown, a pneumatic clamp for thin-walled aerospace components according to the first aspect of this utility model includes an adjustment mechanism, which includes a mounting frame 11, a guide rail 12 fixedly connected to the inner wall of the mounting frame 11, and a first cylinder 13 fixedly connected to the top of the mounting frame 11; and a clamping mechanism, which includes a fixing rod 21, the surface of the fixing rod 21 being slidably connected to the interior of the mounting frame 11, and a limit block provided at the upper end of the fixing rod 21.
[0024] In the above embodiments, it should be noted that, according to the size and shape of the aerospace thin-walled part, the first cylinder 13 at the top of the mounting bracket 11 is activated, and its output end extends and retracts to drive the connected mounting part 14 to move. The slide plate 15 at the lower end of the mounting part 14 slides along the guide rail 12, thereby loosening the fixing rod 21 and adjusting it to a suitable position according to the surface shape of the aerospace thin-walled part.
[0025] The technical effect achieved by the above embodiment is that the slide plate 15 at the lower end of the mounting component 14 slides along the guide rail 12, thereby loosening the fixing rod 21 and adjusting it to a suitable position according to the surface shape of the aerospace thin-walled component.
[0026] Example 2
[0027] like Figures 1 to 5As shown, a pneumatic clamp for thin-walled aerospace parts includes all the contents of Embodiment 1. In addition, the adjustment mechanism includes a mounting frame 11, with a guide rail 12 fixedly connected to the inner wall of the mounting frame 11, and a first cylinder 13 fixedly connected to the top of the mounting frame 11; a clamping mechanism including a fixing rod 21, the surface of which is slidably connected to the interior of the mounting frame 11, and a limit block provided at the upper end of the fixing rod 21; the adjustment mechanism also includes a mounting component 14, one side of which is fixedly connected to the output end of the first cylinder 13. The lower end of component 14 is fixedly connected to a slide plate 15. A sliding groove 16 is provided at the bottom of the slide plate 15. The inner wall of the sliding groove 16 is slidably connected to the surface of the guide rail 12. A locking component 17 is fixedly connected to the surface of the slide plate 15. One side of the locking component 17 overlaps with the surface of the fixing rod 21. A limiting component 18 is fixedly connected to the inner wall of the mounting bracket 11. One side of the limiting component 18 overlaps with the side of the fixing rod 21 away from the locking component 17. The clamping mechanism also includes a rotating ball sleeve 22. A rotating ball 23 is rotatably connected to the inner wall of the rotating ball sleeve 22.
[0028] In the above embodiment, it should be noted that when the first cylinder 13 is restarted, the locking part 17 on the surface of the slide plate 15 and the limiting part 18 on the inner wall of the mounting bracket 11 are used to fix the fixing rod 21 to ensure the stability of the clamp position. Then, the suction cup 24 is rotated so that the rotating ball 23 rotates inside the rotating ball sleeve 22, so that the suction cup 24 is adjusted to a suitable angle to fit the surface of the thin-walled part. Then, the second cylinder 26 on the surface of the rotating ball sleeve 22 is started, and its output end abuts against the surface of the rotating ball 23 to fix the angle of the suction cup 24.
[0029] The technical effect achieved by the above embodiment is that the slide plate 15 at the lower end of the mounting component 14 slides along the guide rail 12, thereby loosening the fixing rod 21 and adjusting it to a suitable position according to the surface shape of the aerospace thin-walled component.
[0030] Example 3
[0031] like Figures 1 to 5 As shown, a pneumatic clamp for thin-walled aerospace parts includes all the contents of Embodiment 2. In addition, the adjustment mechanism includes a mounting frame 11, a guide rail 12 fixedly connected to the inner wall of the mounting frame 11, and a first cylinder 13 fixedly connected to the top of the mounting frame 11; a clamping mechanism includes a fixed rod 21, the surface of the fixed rod 21 is slidably connected to the inside of the mounting frame 11, a limit block is provided at the upper end of the fixed rod 21, a suction cup 24 is fixedly connected to the bottom of the rotating ball 23, an air inlet 25 is provided on the surface of the suction cup 24, and a second cylinder 26 is provided on the surface of the rotating ball sleeve 22, with the output end of the second cylinder 26 overlapping the surface of the rotating ball 23;
[0032] In the above embodiment, it should be noted that the air pressure inside the suction cup 24 is reduced by the air inlet 25 on the surface of the suction cup 24 to form a negative pressure, which generates an adsorption force to firmly clamp the thin-walled part, and the processing operation can begin. After the processing is completed, the air pressure inside the suction cup 24 is restored by the air inlet 25 to release the adsorption force and remove the thin-walled part.
[0033] The technical effect achieved by the above embodiment is as follows: the thin-walled part is firmly clamped by the adsorption force, and the processing operation can be started. After the processing is completed, the air pressure in the suction cup 24 is restored through the air inlet 25 to release the adsorption force and remove the thin-walled part.
[0034] Working principle: First, based on the size and shape of the aerospace thin-walled part, the first cylinder 13 at the top of the mounting bracket 11 is activated. Its output end extends and retracts, driving the connected mounting part 14 to move. The slide plate 15 at the lower end of the mounting part 14 slides along the guide rail 12, thereby releasing the fixing rod 21 and adjusting it to a suitable position according to the surface shape of the aerospace thin-walled part. Then, the first cylinder 13 is activated again, and the fixing rod 21 is fixed by the locking part 17 on the surface of the slide plate 15 and the limiting part 18 on the inner wall of the mounting bracket 11, ensuring the stability of the clamp position. After that, the suction cup 24 is rotated, causing the rotating ball 23 to rotate inside the rotating ball sleeve 22, so that the suction cup 24 is adjusted to a suitable angle to fit the surface of the thin-walled part. Then, the second cylinder 26 on the surface of the rotating ball sleeve 22 is activated, and its output end abuts against the surface of the rotating ball 23 to fix the angle of the suction cup 24. Finally, the air pressure inside the suction cup 24 is reduced through the air inlet 25 on the surface of the suction cup 24 to form a negative pressure, generating suction force to firmly clamp the thin-walled part, and the processing operation can begin. After processing, the air pressure inside the suction cup 24 is restored through the air inlet 25 to release the adsorption force, and the thin-walled part is removed.
Claims
1. A pneumatic clamp for thin-walled aerospace parts, characterized in that, include The adjustment mechanism includes a mounting bracket (11), a guide rail (12) is fixedly connected to the inner wall of the mounting bracket (11), and a first cylinder (13) is fixedly connected to the top of the mounting bracket (11). The clamping mechanism includes a fixed rod (21), the surface of which is slidably connected to the interior of the mounting frame (11), and a limit block is provided at the upper end of the fixed rod (21). The adjustment mechanism also includes a mounting component (14), one side of which is fixedly connected to the output end of the first cylinder (13); The lower end of the mounting component (14) is fixedly connected to a sliding plate (15), and a sliding groove (16) is provided at the bottom of the sliding plate (15).
2. The pneumatic clamp for thin-walled aerospace parts according to claim 1, characterized in that, The inner wall of the sliding groove (16) is slidably connected to the surface of the guide rail (12), and a locking member (17) is fixedly connected to the surface of the slide plate (15). One side of the locking member (17) overlaps with the surface of the fixing rod (21).
3. The pneumatic clamp for thin-walled aerospace parts according to claim 1, characterized in that, The inner wall of the mounting bracket (11) is fixedly connected to a limiting member (18), and one side of the limiting member (18) overlaps with the side of the fixing rod (21) away from the locking member (17).
4. A pneumatic clamp for thin-walled aerospace parts according to claim 1, characterized in that, The clamping mechanism further includes a rotating ball sleeve (22), and a rotating ball (23) is rotatably connected to the inner wall of the rotating ball sleeve (22).
5. A pneumatic clamp for thin-walled aerospace parts according to claim 4, characterized in that, The bottom of the rotating ball (23) is fixedly connected to a suction cup (24), and the surface of the suction cup (24) is provided with an air inlet (25).
6. A pneumatic clamp for thin-walled aerospace parts according to claim 5, characterized in that, The surface of the rotating ball sleeve (22) is provided with a second cylinder (26), and the output end of the second cylinder (26) overlaps with the surface of the rotating ball (23).