A gap measuring device and a skin shape dimension detection system

Abstract

This utility model belongs to the field of shot peening forming technology, and discloses a gap measuring device and a skin shape dimension detection system. The gap measuring device includes a measuring element, a mounting base, and a moving component. The moving component is detachably connected to the mounting base and can move the mounting base relative to the CKF inspection fixture while maintaining a constant distance between the mounting base and the CKF inspection fixture. The measuring element is detachably mounted on the mounting base and is used to measure the gap between the skin to be inspected and the CKF inspection fixture. This gap measuring device has high measurement efficiency and small measurement error.

Description

Technical Field

[0001] This utility model relates to the field of shot peening forming technology, and in particular to a gap measuring device and a skin shape dimension detection system. Background Technology

[0002] Shot peening is a specialized process that uses a high-speed stream of shot to impact the surface of a metal sheet, causing plastic deformation of the surface material and gradually forming the desired shape. It is widely used in the aerospace field. Shot peening technology for large wall panel skins and high-performance integral components utilizes a high-speed shot stream to impact the surface of a metal sheet, causing plastic deformation and elongation of the impacted surface and underlying metal material. This gradually leads to a bending deformation of the sheet towards the peened surface, achieving the desired shape.

[0003] The external dimensions of large-scale wall panel skin high-performance integral components are important indicators for evaluating the manufacturing quality of wall panel skin, and also represent the subjective evaluation of product quality by quality personnel. In related technologies, the method for inspecting the external dimensions of large-scale wall panel skin involves placing the product on a corresponding Critical Key Feature Fixture (CKF), installing it into the CKF fixture through positioning holes on both sides of the product, and then placing standard pressure blocks evenly on the upper surface of the product according to a certain proportion. Using feeler gauges of different specifications, measurements are taken at multiple inspection points on the inner surface of the skin.

[0004] However, this method involves first visually assessing the gap value and then combining feeler gauges of different thicknesses, resulting in low measurement efficiency, high workload, and relatively large measurement errors, which may affect product quality. Utility Model Content

[0005] The purpose of this invention is to provide a gap measuring device and a skin shape dimension detection system. The gap measuring device has high measurement efficiency and small measurement error.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] On one hand, a gap measuring device is provided, including a measuring element, a mounting base, and a moving component. The moving component is detachably connected to the mounting base and can drive the mounting base to move relative to the CKF inspection fixture, while the distance between the mounting base and the CKF inspection fixture remains unchanged. The measuring element is detachably mounted on the mounting base and is used to measure the gap between the skin to be inspected and the CKF inspection fixture.

[0008] Preferably, the measuring component includes a display unit and a measuring rod. The display unit is used to display the gap dimension between the skin to be inspected and the CKF inspection fixture. One end of the measuring rod is connected to the display unit. During the measurement process, the other end of the measuring rod can always abut against the bottom surface of the skin to be inspected. The length of the measuring rod is adjustable, and the measuring rod can slide relative to the mounting base.

[0009] Preferably, the mounting base includes a support base, a connecting base, and a limiting component. The support base and the connecting base are connected in sequence and are stepped. The display part is supported on the support base, and the end face of the display part connected to the measuring rod abuts against the connection between the support base and the connecting base. The measuring rod is parallel to the connecting base. The limiting component is fixedly connected to the connecting base, and the measuring rod passes through the limiting component.

[0010] Preferably, the limiting assembly includes two limiting blocks that are parallel and spaced apart along the length of the measuring rod. Both limiting blocks are fixedly connected to the connecting seat and are perpendicular to the connecting seat. The gap measuring device also includes a clamping block and an adjusting screw. The clamping block is disposed between the two limiting blocks, and the measuring rod passes through the clamping block. The adjusting screw is sequentially screwed to the clamping block and the connecting seat in a direction perpendicular to the connecting seat. The clamping block can slide relative to the limiting blocks.

[0011] Preferably, the connecting seat is provided with a connecting hole, and the moving component includes a drive shaft, a roller and a nut. The drive shaft passes through the connecting hole and the drive shaft and the hole wall of the connecting hole are relatively fixed. The nut is screwed to one end of the drive shaft and the end face of the nut abuts against the connecting seat. The roller is rotatably connected to the other end of the drive shaft.

[0012] Preferably, the connecting seat is provided with two connecting holes, which are located on opposite sides of the measuring rod. The gap measuring device includes two moving components, and the drive shafts of the two moving components are respectively inserted through the two connecting holes.

[0013] Preferably, the measuring element is a digital display indicator.

[0014] On the other hand, a skin shape dimension inspection system is provided, which includes: a support frame, a CKF inspection fixture, and a gap measuring device of any of the above technical solutions. The CKF inspection fixture is supported on the support frame and is used to be detachably connected to the skin to be inspected. The gap measuring device is connected to the CKF inspection fixture and is movable relative to the CKF inspection fixture.

[0015] Preferably, the CKF inspection fixture is provided with a groove, the moving component of the gap measuring device is disposed in the groove, and the moving component moves relative to the inner wall of the groove.

[0016] Preferably, the skin shape dimension detection system also includes a reference component, which is fixedly connected to the CKF inspection fixture.

[0017] The beneficial effects of this utility model are as follows: It provides a gap measuring device and a skin shape dimension detection system. The gap measuring device consists of a measuring component, a mounting base, and a moving component. The moving component is detachably connected to the mounting base and can move the mounting base relative to the CKF inspection fixture while maintaining a constant distance between the mounting base and the CKF inspection fixture. The measuring component is detachably mounted on the mounting base, ensuring that the measuring reference of the measuring component remains unchanged, thereby improving the measurement accuracy. At the same time, by measuring the gap between the skin to be inspected and the CKF inspection fixture through the measuring component, there is no need to change different feeler gauges, thus improving the measurement efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the gap measuring device provided by this utility model;

[0019] Figure 2 This is a schematic diagram of the CKF inspection fixture provided by this utility model;

[0020] Figure 3 This is a partial structural schematic diagram of the gap measuring device and skin outline dimension detection system provided by this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the reference component and the gap measuring device of the skin shape dimension detection system provided by this utility model.

[0022] In the diagram: 1. Gap measuring device; 11. Measuring component; 111. Measuring rod; 112. Display unit; 12. Support base; 13. Connecting base; 14. Limiting assembly; 15. Drive shaft; 16. Roller; 17. Nut; 18. Clamping block; 19. Adjusting screw;

[0023] 2. Support frame;

[0024] 3. CKF inspection fixture; 31. Groove;

[0025] 4. Reference component; 5. Skin to be tested. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] On the one hand, please refer to Figures 1 to 4 This embodiment provides a gap measuring device 1, including a measuring element 11, a mounting base, and a moving assembly. The moving assembly is detachably connected to the mounting base and can move the mounting base relative to the CKF inspection fixture 3, while maintaining a constant distance between the mounting base and the CKF inspection fixture 3. The measuring element 11 is detachably mounted on the mounting base and is used to measure the gap between the skin 5 to be inspected and the CKF inspection fixture 3. This configuration, with the moving assembly detachably connected to the mounting base, allows the mounting base to move relative to the CKF inspection fixture 3 while maintaining a constant distance between them. The detachable mounting of the measuring element 11 ensures that the measurement reference of the measuring element 11 remains unchanged, thereby improving measurement accuracy. Furthermore, by measuring the gap between the skin 5 to be inspected and the CKF inspection fixture 3 using the measuring element 11, there is no need to change different feeler gauges, improving measurement efficiency.

[0031] Alternatively, please refer to Figure 1 The measuring component 11 includes a display unit 112 and a measuring rod 111. The display unit 112 displays the gap between the skin 5 to be inspected and the CKF inspection fixture 3. One end of the measuring rod 111 is connected to the display unit 112. During the measurement process, the other end of the measuring rod 111 is always in contact with the bottom surface of the skin 5 to be inspected. The length of the measuring rod 111 is adjustable, and the measuring rod 111 can slide relative to the mounting base. Specifically, before the test, the measuring component 11 is zeroed. One end of the measuring rod 111 is in contact with the bottom surface of the skin 5 to be inspected, and the other end moves horizontally. The measuring rod 111 can extend and retract. The amount of extension and retraction of the measuring rod 111 at interval measurement points is the gap between the skin 5 to be inspected and the CKF inspection fixture 3 at the corresponding point. Preferably, the display unit 112 is a display screen that displays the measurement results in digital form. In other embodiments, the display unit 112 can also be an indicator dial, which displays the measurement results by pointing to the corresponding scale.

[0032] Preferably, the measuring element 11 is a digital display indicator. The digital display indicator has a measurement range of -25.4mm to 25.4mm, a resolution of 0.01mm, and a full-range accuracy of 0.02mm. It exhibits good stability and high accuracy during use. Specifically, the digital display indicator also includes a sensor that converts the mechanical displacement of the measuring rod 111 into an electrical signal. After processing by electronic circuitry, the measurement result is displayed digitally on the screen. In other embodiments, the measuring element can also be a mechanical indicator.

[0033] Optionally, the mounting base includes a support base 12, a connecting base 13, and a limiting component 14. The support base 12 and the connecting base 13 are connected sequentially and are stepped. The display unit 112 is supported on the support base 12, and the end face of the display unit 112 connected to the measuring rod 111 abuts against the connection between the support base 12 and the connecting base 13. The measuring rod 111 is parallel to the connecting base 13. The limiting component 14 is fixedly connected to the connecting base 13, and the measuring rod 111 passes through the limiting component 14. This configuration ensures measurement accuracy by ensuring the measuring rod 111 is parallel to the connecting base 13. At the same time, by having the measuring rod 111 pass through the limiting component 14, it prevents the measuring rod 111 from shaking during the measurement process, which could lead to inaccurate measurement results.

[0034] Optionally, the limiting assembly 14 includes two limiting blocks that are parallel and spaced apart along the length of the measuring rod 111. Both limiting blocks are fixedly connected to the connecting seat 13 and are perpendicular to the connecting seat 13. The gap measuring device 1 also includes a clamping block 18 and an adjusting screw 19. The clamping block 18 is disposed between the two limiting blocks, and the measuring rod 111 passes through the clamping block 18. The adjusting screw 19 is screwed sequentially to the clamping block 18 and the connecting seat 13 in a direction perpendicular to the connecting seat 13. The clamping block 18 can slide relative to the limiting blocks. This configuration provides a clear installation path for the measuring rod 111 as it passes through two parallel, spaced-apart limit blocks. As the measuring rod 111 passes through these limit blocks, it is installed accurately along the direction defined by the blocks, preventing any tilting or deviation from the predetermined position during installation. This ensures the measuring rod 111 is precisely installed in the designated position. Simultaneously, the adjusting screw 19 is sequentially screwed onto the clamping block 18 and the connecting seat 13 in a direction perpendicular to the connecting seat 13. By tightening or loosening the adjusting screw 19, the relative position between the clamping block 18 and the connecting seat 13 can be changed, thereby adjusting the position of the measuring rod 111 in the direction perpendicular to the connecting seat 13. This ensures the measuring rod 111 is parallel to the connecting seat 13, thus guaranteeing the measurement accuracy of the gap measuring device 1. Specifically, the adjusting screw 19 is made of stainless steel, and the clamping block 18 is made of aluminum alloy.

[0035] Optionally, the connecting seat 13 is provided with a connecting hole. The moving assembly includes a drive shaft 15, a roller 16, and a nut 17. The drive shaft 15 passes through the connecting hole, and the drive shaft 15 and the hole wall are relatively fixed. The nut 17 is screwed to one end of the drive shaft 15, and the end face of the nut 17 abuts against the connecting seat 13. The roller 16 is rotatably connected to the other end of the drive shaft 15. This configuration allows the roller 16 to rotate freely under the drive of the drive shaft 15, thus achieving low-friction movement of the measuring device. The roller 16 is positioned in the groove 31 of the CKF inspection fixture 3 and rolls within the groove 31, making the measuring device move more easily and improving measurement efficiency and ease of operation. Preferably, the drive shaft 15, roller 16, and nut 17 are all made of stainless steel to ensure the structural strength and service life of the moving assembly.

[0036] Understandably, the size of the roller 16 can be adaptively adjusted according to the different sizes of the grooves 31 corresponding to the CKF inspection fixture 3 for different skins 5 to be inspected, to ensure that the roller 16 can roll in the groove 31. This embodiment does not limit the size of the roller 16. In other embodiments, the moving component can also be a fastening screw and a slider, with the slider fixed to the connecting seat 13 by the fastening screw, and the slider can slide in the groove 31.

[0037] Optionally, the connecting seat 13 is provided with two connecting holes, which are located on opposite sides of the measuring rod 111. The gap measuring device 1 includes two moving components, and the drive shafts 15 of the two moving components pass through the two connecting holes one-to-one. With this arrangement, the two moving components are located on opposite sides of the measuring rod 111, supporting and guiding the measuring rod 111, further preventing lateral offset and swaying of the measuring rod 111 during movement, thereby improving the accuracy and stability of the measurement and reducing measurement errors.

[0038] On the other hand, please refer to Figures 2 to 4 A skin shape dimension inspection system is provided, comprising: a support frame 2, a CKF inspection fixture 3, and the aforementioned gap measuring device 1. The CKF inspection fixture 3 is supported on the support frame 2 and is detachably connected to the skin 5 to be inspected. The gap measuring device 1 is connected to the CKF inspection fixture 3 and is movable relative to the CKF inspection fixture 3. This configuration, with the support frame 2 supporting the CKF inspection fixture 3 and the skin 5 to be inspected detachably connected to the CKF inspection fixture 3, enhances the stability and reliability of the skin shape dimension inspection system, enabling the gap measuring device 1 to perform accurate measurements and preventing deformation or shaking of the skin 5 to be inspected during the inspection process, which would affect the measurement accuracy.

[0039] Alternatively, please refer to Figure 3 The CKF inspection fixture 3 is provided with a groove 31. The moving component of the gap measuring device 1 is disposed in the groove 31, and the moving component moves relative to the inner wall of the groove 31. In this configuration, the groove 31 acts as a guide, ensuring that the moving component can only move along the direction of the groove 31, without lateral deviation or shaking, thereby improving the accuracy and stability of the measurement.

[0040] Preferably, the inner wall of the groove 31 has spaced scale lines to indicate the test points of the skin shape dimension detection system, making it easier for operators to find the corresponding test points for measurement and improving measurement efficiency. Specifically, in this embodiment, the distance between two adjacent test points is 100mm. In other embodiments, the operator can adjust the distance between adjacent test points as needed.

[0041] Alternatively, please refer to Figure 4The skin shape dimension detection system also includes a reference component 4, which is fixedly connected to the CKF inspection fixture 3. Specifically, the reference component 4 is a zeroing block; in other embodiments, the reference component 4 can also be a reference plate. Before measurement, the reference component 4 is used to calibrate the measuring component 11 of the gap measuring device 1, zeroing the measuring component 11 to eliminate system errors, ensure the accuracy of the zero point and range of the measuring tool, and guarantee the accuracy of the measured structure. After zeroing, the roller 16 of the gap measuring device 1 is installed in the groove 31, the measuring rod 111 is attached to the bottom surface of the skin 5 to be inspected, and the digital display reading is read at the corresponding test point. The measurement is simple and highly accurate.

[0042] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A gap measuring device, characterized in that, The device includes a measuring element (11), a mounting base, and a moving assembly. The moving assembly is detachably connected to the mounting base and can move the mounting base relative to the CKF inspection fixture (3) while maintaining a constant distance between the mounting base and the CKF inspection fixture (3). The measuring element (11) is detachably mounted on the mounting base and is used to measure the gap between the skin (5) to be inspected and the CKF inspection fixture (3).

2. The gap measuring device of claim 1, wherein, The measuring component (11) includes a display unit (112) and a measuring rod (111). The display unit (112) is used to display the gap size between the skin to be inspected (5) and the CKF inspection fixture (3). One end of the measuring rod (111) is connected to the display unit (112). During the measurement process, the other end of the measuring rod (111) can always abut against the bottom surface of the skin to be inspected (5). The length of the measuring rod (111) is adjustable, and the measuring rod (111) can slide relative to the mounting base.

3. The gap measuring device of claim 2, wherein, The mounting base includes a support base (12), a connecting base (13), and a limiting component (14). The support base (12) and the connecting base (13) are connected in sequence and are stepped. The display unit (112) is supported on the support base (12), and the end face of the display unit (112) connected to the measuring rod (111) abuts against the connection between the support base (12) and the connecting base (13). The measuring rod (111) is parallel to the connecting base (13). The limiting component (14) is fixedly connected to the connecting base (13), and the measuring rod (111) passes through the limiting component (14).

4. The gap measuring device of claim 3, wherein, The limiting component (14) includes two limiting blocks that are parallel and spaced apart along the length of the measuring rod (111). Both limiting blocks are fixedly connected to the connecting seat (13) and are perpendicular to the connecting seat (13). The gap measuring device (1) also includes a clamping block (18) and an adjusting screw (19). The clamping block (18) is disposed between the two limiting blocks, and the measuring rod (111) passes through the clamping block (18). The adjusting screw (19) is screwed sequentially to the clamping block (18) and the connecting seat (13) in a direction perpendicular to the connecting seat (13). The clamping block (18) can slide relative to the limiting blocks.

5. The gap measuring device of claim 4, wherein, The connecting seat (13) is provided with a connecting hole. The moving component includes a drive shaft (15), a roller (16) and a nut (17). The drive shaft (15) passes through the connecting hole, and the drive shaft (15) and the hole wall of the connecting hole are fixed relative to each other. The nut (17) is screwed to one end of the drive shaft (15), and the end face of the nut (17) abuts against the connecting seat (13). The roller (16) is rotatably connected to the other end of the drive shaft (15).

6. The gap measuring device of claim 5, wherein, The connecting seat (13) is provided with two connecting holes, which are located on opposite sides of the measuring rod (111). The gap measuring device (1) includes two moving components, and the transmission shafts (15) of the two moving components are respectively inserted through the two connecting holes.

7. The gap measuring device according to any one of claims 1 to 6, characterized in that The measuring component (11) is a digital display indicator.

8. A skin outer dimension detection system characterized by, The skin shape dimension detection system includes: a support frame (2), a CKF inspection fixture (3), and a gap measuring device (1) according to any one of claims 1-7. The CKF inspection fixture (3) is supported on the support frame (2) and is used to be detachably connected to the skin (5) to be inspected. The gap measuring device (1) is connected to the CKF inspection fixture (3) and is movable relative to the CKF inspection fixture (3).

9. The skin shape and dimension detection system according to claim 8, characterized in that, The CKF inspection fixture (3) is provided with a groove (31), the moving component of the gap measuring device (1) is disposed in the groove (31), and the moving component moves relative to the inner wall of the groove (31).

10. The skin outer dimension detection system of claim 9, wherein, The skin shape dimension detection system also includes a reference component (4), which is fixedly connected to the CKF inspection fixture (3).

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