A step detection tool

Abstract

The utility model relates to composite material piece detection technical field especially relates to a kind of step difference detection tools.The step difference detection tool includes locating seat, sliding seat, mounting bracket and depth gauge, locating seat has locating surface, locating surface can be attached on the datum surface of the piece to be detected;Sliding seat has parallel connecting surface and mounting surface, connecting surface is located above the surface to be detected of the piece to be detected, and with the parallel surface to be detected, sliding seat is provided with strip via hole that penetrates connecting surface and mounting surface;Mounting bracket is slidably connected on mounting surface, and mounting bracket has mounting hole on it;Depth gauge is installed on mounting bracket, and the detection end of depth gauge can successively pass through mounting hole and strip via hole and abut on the surface to be detected of the piece to be detected.The structure of the step difference detection tool is simple, the profile step difference of the glued honeycomb sandwich structure can be accurately detected, and the reliability of detection result is improved.

Description

Technical Field

[0001] This utility model relates to the field of composite material component testing technology, and in particular to a step difference testing tool. Background Technology

[0002] Adhesive-bonded honeycomb sandwich structures have advantages such as high specific strength, good impact resistance, vibration reduction, microwave permeability, and strong design flexibility, making them one of the indispensable structural materials in the aerospace field.

[0003] like Figure 1 and Figure 2 As shown, an adhesive-bonded honeycomb sandwich structure typically includes two thin skins 100', a honeycomb core material 200', and an edge sealing structure 300'. The two thin skins 100' are respectively attached to the first side 201' and the second side 202' of the honeycomb core material 200', and the edge sealing structure 300' is bonded to the third side 203' of the honeycomb core material 200' using expanding foam. However, the expanding foam expands after curing, forming a raised adhesive layer on the surface of the honeycomb core material 200'. This causes a step difference at the location of the foam corresponding to the thin skin 100'. If this step difference exceeds a preset value range, stress concentration will occur at the location of the foam corresponding to the thin skin 100', severely affecting the structural performance of the adhesive-bonded honeycomb sandwich structure.

[0004] Therefore, there is an urgent need for a step difference detection tool to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a step difference detection tool that can accurately detect the surface step difference of bonded honeycomb sandwich structures and improve the reliability of the detection results.

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

[0007] A step difference detection tool, comprising:

[0008] A positioning seat, wherein the positioning seat has a positioning surface that can be attached to the reference surface of the workpiece to be tested;

[0009] A sliding seat has a parallel connecting surface and a mounting surface. The connecting surface is located above the surface to be tested of the workpiece and is parallel to the surface to be tested. The sliding seat is provided with a strip-shaped through hole that penetrates the connecting surface and the mounting surface.

[0010] The mounting bracket is slidably connected to the mounting surface, and the mounting bracket has mounting holes.

[0011] A depth gauge is mounted on the mounting bracket, and the detection end of the depth gauge can pass through the mounting hole and the strip-shaped through hole in sequence to abut against the surface to be detected.

[0012] As a preferred embodiment of the step difference detection tool provided by this utility model, the sliding seat is detachably connected to the positioning seat.

[0013] As a preferred embodiment of the step difference detection tool provided by this utility model, the included angle between the sliding seat and the positioning seat is adjustable.

[0014] As a preferred embodiment of the step difference detection tool provided by this utility model, the sliding seat includes a sliding part and a connecting part connected to each other. The connecting surface, the mounting surface and the strip-shaped through hole are all disposed on the sliding part. The end of the connecting part away from the sliding part is rotatably connected to the positioning seat.

[0015] As a preferred embodiment of the step difference detection tool provided by this utility model, the positioning seat is provided with two spaced-apart extension arms, each of which is provided with a first connecting hole. The connecting part is inserted into the gap between the two extension arms, and the connecting part is provided with a second connecting hole corresponding to the first connecting hole. The bolt passes through the first connecting hole and the second connecting hole in sequence and is screwed onto the nut.

[0016] As a preferred embodiment of the step difference detection tool provided by this utility model, the sliding part and the connecting part are integrally formed.

[0017] As a preferred embodiment of the step difference detection tool provided by this utility model, a groove is provided on the mounting surface, and the mounting bracket is slidably disposed in the groove.

[0018] As a preferred embodiment of the step difference detection tool provided by this utility model, one of the groove wall and the side wall of the mounting bracket is provided with a limiting protrusion, and the other is provided with a groove, wherein the limiting protrusion is slidably engaged in the groove.

[0019] As a preferred embodiment of the step difference detection tool provided by this utility model, the number of the limiting protrusions is two, and the two limiting protrusions are respectively located on both sides of the mounting bracket.

[0020] As a preferred embodiment of the step difference detection tool provided by this utility model, the groove has flared openings at both ends along the sliding direction of the mounting bracket.

[0021] The beneficial effects of this utility model are:

[0022] The step difference detection tool provided by this utility model, in use, first places the positioning surface of the positioning seat against the reference surface of the part to be tested, and then places the connecting surface of the sliding seat parallel to the surface to be tested above the part to be tested; the mounting bracket slides along the sliding seat from one end of the strip-shaped through hole, and stops sliding when the detection end of the depth gauge abuts against the surface to be tested, and the reading of the depth gauge is returned to zero, and then the mounting bracket is pushed in the opposite direction to slide along the sliding seat to the initial position, and the reading is obtained; the above steps are repeated until the entire surface to be tested is tested. This step difference detection tool has a simple structure, is easy to operate, and can accurately detect the surface step difference of the bonded honeycomb sandwich structure, improving the reliability of the test results. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the first example of an adhesive-bonded honeycomb sandwich structure provided by the related technology;

[0024] Figure 2 This is a schematic diagram of the adhesive honeycomb sandwich structure, a second example provided by the related technology;

[0025] Figure 3 This is one of the structural schematic diagrams of the step difference detection tool provided in this embodiment of the utility model;

[0026] Figure 4 This is the second structural schematic diagram of the step difference detection tool provided in this embodiment of the utility model.

[0027] In the picture:

[0028] 100', Thin skin; 200', Honeycomb core material; 201', First side; 202', Second side; 203', Third side; 300', Edge sealing structure;

[0029] 10. Positioning seat; 101. Positioning surface; 102. Extension arm; 1021. First connecting hole;

[0030] 20. Sliding seat; 21. Sliding part; 2101. Connecting surface; 2102. Strip-shaped through hole; 2103. Slide groove; 2104. Limiting protrusion; 22. Connecting part;

[0031] 30. Mounting bracket; 301. Groove;

[0032] 40. Depth regulation. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0034] 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 or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or 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 according to the specific circumstances.

[0035] In the description of this utility model, unless otherwise expressly 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.

[0036] Figure 3 One of the structural schematic diagrams of the step difference detection tool provided in this embodiment is shown. Figure 4 The second schematic diagram shows the structure of the step difference detection tool provided in this embodiment. (See diagram below.) Figures 3-4 As shown, this embodiment provides a step difference detection tool, which includes a positioning base 10, a sliding base 20, a mounting bracket 30, and a depth gauge 40. The positioning base 10 has a positioning surface 101, which can be attached to the reference surface of the workpiece to be tested. The sliding base 20 has a parallel connecting surface 2101 and a mounting surface. The connecting surface 2101 is located above the surface to be tested of the workpiece to be tested and is parallel to the surface to be tested. The sliding base 20 is provided with a strip-shaped through hole 2102 that penetrates the connecting surface 2101 and the mounting surface. The mounting bracket 30 is slidably connected to the mounting surface and has a mounting hole. The depth gauge 40 is mounted on the mounting bracket 30, and the detection end of the depth gauge 40 can pass through the mounting hole and the strip-shaped through hole 2102 in sequence to abut against the surface to be tested of the workpiece to be tested.

[0037] refer to Figure 1 and Figure 2 As shown, in this embodiment, the component to be tested specifically refers to the bonded honeycomb sandwich structure. The reference surface of the component to be tested specifically refers to the side of the edge sealing structure 300' facing away from the honeycomb core material 200', and the surface to be tested specifically refers to the outer surface of the thin skin 100'.

[0038] The step difference detection tool provided in this embodiment, when in use, first attaches the positioning surface 101 of the positioning seat 10 to the reference surface of the part to be tested, and then places the connecting surface 2101 of the sliding seat 20 parallel above the surface to be tested of the part; the mounting bracket 30 slides along the sliding seat 20 from one end of the strip-shaped through hole 2102, and stops sliding when the detection end of the depth gauge 40 abuts against the surface to be tested, and the reading of the depth gauge 40 is reset to zero, and then the mounting bracket 30 is pushed in the opposite direction to slide along the sliding seat 20 to the initial position, and the reading is obtained; the above steps are repeated until the entire surface to be tested is tested. This step difference detection tool has a simple structure, is easy to operate, and can accurately detect the surface step difference of the bonded honeycomb sandwich structure, improving the reliability of the test results.

[0039] like Figures 3-4 As shown, the sliding seat 20 is detachably connected to the positioning seat 10. With this configuration, when it is necessary to detect the surface step difference of adhesive honeycomb sandwich structures of different models and sizes, only the sliding seat 20 or only the positioning seat 10 can be replaced to meet the detection requirements, thereby improving the versatility of the step difference detection tool and reducing processing costs.

[0040] In some embodiments, the included angle between the sliding seat 20 and the positioning seat 10 is adjustable. It is understood that when using this step difference detection tool, the connecting surface 2101 needs to be parallel to the surface to be tested, and the positioning surface 101 needs to be in contact with the reference surface. Therefore, the included angle between the connecting surface 2101 and the positioning surface 101 is equal to the included angle between the surface to be tested and the reference surface. By adjusting the angle of the sliding seat 20 on the positioning seat 10, the installation angle between the sliding seat 20 and the positioning seat 10 can be adjusted according to different models and sizes of adhesive honeycomb sandwich structures, thereby further improving the versatility of this step difference detection tool.

[0041] In some embodiments, the sliding seat 20 includes a sliding part 21 and a connecting part 22 connected together. The connecting surface 2101, the mounting surface and the strip-shaped through hole 2102 are all disposed on the sliding part 21. The end of the connecting part 22 facing away from the sliding part 21 is rotatably connected to the positioning seat 10, thereby achieving the effect of setting the sliding seat 20 on the positioning seat 10 with an adjustable angle.

[0042] Specifically, the positioning seat 10 has two spaced-apart extension arms 102, each with a first connecting hole 1021. A connecting part 22 is inserted into the gap between the two extension arms 102, and a second connecting hole is provided on the connecting part 22 corresponding to the first connecting hole 1021. A bolt passes through the first connecting hole 1021 and the second connecting hole in sequence and is screwed onto the nut. When it is necessary to adjust the angle between the sliding seat 20 and the positioning seat 10, the nut can be loosened first, then the sliding seat 20 can be rotated around the bolt axis to the appropriate position, and then the nut can be tightened. This allows for easy adjustment of the angle between the sliding seat 20 and the positioning seat 10. Furthermore, this design also allows for a detachable connection between the sliding seat 20 and the positioning seat 10.

[0043] In some embodiments, the sliding part 21 and the connecting part 22 are integrally formed to reduce the number of parts, simplify the assembly process, and make installation simple.

[0044] like Figure 3 As shown, a groove 2103 is provided on the mounting surface of the sliding seat 20, and the mounting bracket 30 is slidably disposed in the groove 2103. By providing the groove 2103, the mounting bracket 30 can slide along the sliding direction of the groove 2103, so as to ensure the stability of the mounting bracket 30 during the sliding process and avoid its sliding path deviation from affecting the test results.

[0045] In some embodiments, a limiting protrusion 2104 is provided on the wall of the slide groove 2103, and a limiting groove 301 is provided on the side wall of the mounting bracket 30. The limiting protrusion 2104 is slidably engaged in the limiting groove 301. The slidingly engaged limiting protrusion 2104 and limiting groove 301 can provide a limiting function for the mounting bracket 30, preventing it from displacing in the vertical direction and affecting the detection results. Of course, in other embodiments, the limiting protrusion 2104 can also be provided on the side wall of the mounting bracket 30, and the limiting groove 301 can be provided on the wall of the slide groove 2103, achieving the same effect.

[0046] Optionally, there are two limiting protrusions 2104, with the two limiting protrusions 2104 located on both sides of the mounting bracket 30. This design ensures that the force is evenly distributed on both sides of the mounting bracket 30, further improving its stability during sliding.

[0047] In some embodiments, the limiting groove 301 has flared openings at both ends along the sliding direction of the mounting bracket 30. This design facilitates the assembly between the mounting bracket 30 and the sliding seat 20, allowing the limiting protrusion 2104 to be quickly aligned with and inserted into the limiting groove 301.

[0048] In some embodiments, the limiting protrusion 2104 and the limiting groove 301 are clearance-fitted so that the mounting bracket 30 can slide smoothly along the slide groove 2103.

[0049] 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 other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations 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 step difference detection tool, characterized in that, include: Positioning seat (10), the positioning seat (10) has a positioning surface (101), the positioning surface (101) can be attached to the reference surface of the workpiece to be tested; The sliding seat (20) has a parallel connecting surface (2101) and a mounting surface. The connecting surface (2101) is located above the surface to be tested of the test piece and is parallel to the surface to be tested. The sliding seat (20) is provided with a strip-shaped through hole (2102) that penetrates the connecting surface (2101) and the mounting surface. Mounting bracket (30) is slidably connected to the mounting surface, and the mounting bracket (30) has mounting holes; A depth gauge (40) is installed on the mounting bracket (30), and the detection end of the depth gauge (40) can pass through the mounting hole and the strip-shaped through hole (2102) in sequence to abut against the surface to be detected.

2. The step difference detection tool according to claim 1, characterized in that, The sliding seat (20) is detachably connected to the positioning seat (10).

3. The step difference detection tool according to claim 1, characterized in that, The angle between the sliding seat (20) and the positioning seat (10) is adjustable.

4. The step difference detection tool according to claim 3, characterized in that, The sliding seat (20) includes a sliding part (21) and a connecting part (22) connected to each other. The connecting surface (2101), the mounting surface and the strip-shaped through hole (2102) are all disposed on the sliding part (21). The end of the connecting part (22) facing away from the sliding part (21) is rotatably connected to the positioning seat (10).

5. The step difference detection tool according to claim 4, characterized in that, The positioning seat (10) is provided with two spaced extension arms (102), each extension arm (102) is provided with a first connecting hole (1021), the connecting part (22) is inserted in the gap between the two extension arms (102), and the connecting part (22) is provided with a second connecting hole corresponding to the first connecting hole (1021). The bolt passes through the first connecting hole (1021) and the second connecting hole in sequence and is screwed onto the nut.

6. The step difference detection tool according to claim 4, characterized in that, The sliding part (21) and the connecting part (22) are integrally formed structures.

7. The step difference detection tool according to claim 1, characterized in that, A groove (2103) is provided on the mounting surface, and the mounting bracket (30) is slidably disposed in the groove (2103).

8. The step difference detection tool according to claim 7, characterized in that, One of the groove wall of the slide (2103) and the side wall of the mounting bracket (30) is provided with a limiting protrusion (2104), and the other is provided with a limiting groove (301). The limiting protrusion (2104) is slidably engaged in the limiting groove (301).

9. The step difference detection tool according to claim 8, characterized in that, There are two limiting protrusions (2104), and the two limiting protrusions (2104) are located on both sides of the mounting bracket (30).

10. The step difference detection tool according to claim 8, characterized in that, The limiting groove (301) has flared openings at both ends along the sliding direction of the mounting bracket (30).

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