Tool device and method for preparing shear strength test sample

Abstract

The invention relates to the technical field of material mechanical property testing, and provides a tool device and a method for preparing a shear strength test sample, the tool device comprises at least two test tools, and each test tool is provided with a bonding surface and a through hole; a baffle assembly is arranged on the gluing tool, and a clamping groove is formed in the baffle assembly; when the testing tool is placed in the clamping groove, the height of the baffle assembly is larger than that of the bonding face, and the difference value between the height of the baffle assembly and the height of the bonding face is the thickness of the gluing layer. Mounting grooves are formed in the bonding tool, positioning convex blocks are arranged in the mounting grooves, and the positioning convex blocks are matched with the through holes; the pressurizing tool comprises a pressing plate and a connecting plate, and the connecting plate is vertically arranged below the pressing plate. According to the tool device for preparing the shear strength test sample, the prepared shear strength test sample is uniform in adhesive layer, free of bonding dislocation and controllable in pressurization.

Description

Technical Field

[0001] The present invention relates to the technical field of material mechanical property testing, and in particular to a tooling device and method for preparing a shear strength test sample. Background Art

[0002] Shear strength is an important performance metric for evaluating materials (such as composites and adhesives). Currently, shear test specimens are typically prepared by bonding the specimen to a pair of test fixtures with adhesive. This traditional method has the following major issues:

[0003] 1. Uneven glue coating: It is difficult to accurately control the thickness of the glue layer when applying glue manually, which easily leads to uneven glue layer thickness;

[0004] 2. Bonding misalignment: During the bonding process, the two test fixtures and the sample in the middle are prone to positional offset, resulting in non-parallel or misaligned bonding surfaces;

[0005] 3. Difficulty in pressure control: The pressure applied during curing is difficult to accurately control and maintain uniformity. Excessive pressure may damage the sample or the adhesive layer, while too little pressure may affect the bonding strength.

[0006] These problems will lead to unstable quality of prepared samples and affect the accuracy and repeatability of shear strength test results.

[0007] In view of this, the present invention is proposed. Summary of the Invention

[0008] The purpose of the present invention is to propose a tooling device and method for preparing shear strength test samples, so as to solve the problems existing in the prior art of preparing shear test samples, such as uneven adhesive layer, misaligned bonding and difficult to control pressurization. These problems will lead to unstable quality of the prepared samples and affect the accuracy and repeatability of the shear strength test results.

[0009] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0010] A tooling device for preparing a shear strength test sample, the tooling device comprising:

[0011] Test fixtures, at least two of which are provided with bonding surfaces and through holes;

[0012] A gluing tool, the gluing tool being used to evenly apply adhesive to the bonding surface; a baffle assembly being provided on the gluing tool, the baffle assembly forming a slot for accommodating a test tool; when the test tool is placed in the slot, the height of the baffle assembly is higher than the height of the bonding surface, and the difference between the height of the baffle assembly and the height of the bonding surface is the thickness of the gluing layer;

[0013] A bonding tool, the bonding tool is used to bond the two test tools and the sample to be tested together, the bonding tool is provided with a mounting groove, and positioning protrusions are provided in the mounting grooves, and the positioning protrusions cooperate with the through holes;

[0014] The pressurizing tooling includes a pressing plate and a connecting plate. The connecting plate is vertically arranged below the pressing plate. The pressing plate and the connecting plate form a T-shape. When the pressurizing tooling applies pressure to the test tooling during the bonding process, the pressing plate is horizontally arranged above the test tooling, and the connecting plate is vertically and fitted on one side of the test tooling.

[0015] Furthermore, the mounting groove includes a first groove and a second groove, the depth of the first groove is greater than that of the second groove, the first groove is used to place the test tool in a forward direction, and the second groove is used to place the test tool in an inverted direction.

[0016] Furthermore, the positioning protrusion includes a first protrusion and a second protrusion, the first protrusion is arranged in the first groove, and the second protrusion is arranged in the second groove.

[0017] Furthermore, the bonding tool and the pressurizing tool are detachably connected.

[0018] Furthermore, a first mounting hole is provided on the bonding tool, and a second mounting hole is provided on the pressurizing tool, and the second mounting hole matches the first mounting hole.

[0019] Furthermore, an opening is provided on one side of the card slot.

[0020] Furthermore, the material of the glue coating tooling is one of polytetrafluoroethylene, polyimide and silicone materials.

[0021] Furthermore, the thermal expansion coefficient of the material of the bonding tool is less than 20×10 -6 / ℃.

[0022] Furthermore, the bonding surface is polished, machined or sandblasted.

[0023] A second aspect of the present invention provides a method for preparing a shear strength test sample, the method using any one of the tooling devices for preparing a shear strength test sample, the method comprising the following steps:

[0024] S1. Cleaning and preparation: Clean the bonding surface of the test fixture with a cleaning agent and dry it;

[0025] S2. Gluing: Using a glue coating tool, glue is applied to the bonding surfaces of the two test tools to obtain a glue coating layer;

[0026] S3. Positioning and bonding: bonding the two test fixtures and the test sample together on a bonding fixture;

[0027] S4. Pressurized curing: Place the pressurized fixture on top of the bonded inverted test fixture, align the second mounting hole of the pressurized fixture with the first mounting hole of the bonding fixture, screw in the third connector, and then perform curing.

[0028] S5. Post-processing and testing: After curing is completed, remove the third connecting piece and the pressurizing fixture, take out the sample assembly bonded to the two test fixtures from the bonding fixture, clean the curing glue overflowed around the sample, and after inspection, proceed to the shear strength test.

[0029] The present invention provides a tooling device and method for preparing a shear strength test sample. Compared with the prior art, the tooling device and method for preparing a shear strength test sample provided by the present invention have the following beneficial effects:

[0030] 1. Uniform glue layer: glue coating tooling ensures that the thickness of the glue layer is precisely controllable and uniform;

[0031] 2. No bonding dislocation: The mounting groove and positioning bump design of the bonding tool completely eliminate the slippage and dislocation of the tool during the bonding process;

[0032] 3.Precise and controllable pressure: The pressurizing tooling combined with the torque wrench can accurately apply and maintain the required curing pressure;

[0033] 4. High sample quality: significantly improved sample preparation accuracy and sample quality consistency;

[0034] 5. Easy and efficient operation: Tooling operation simplifies the process, improves efficiency, and reduces dependence on operator experience;

[0035] 6. Reliable test results: ultimately obtain more accurate and repeatable shear strength test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the three-dimensional structure of a test fixture for preparing a shear strength test sample according to an embodiment of the present invention;

[0037] Figure 2 This is a second schematic diagram of the three-dimensional structure of a test fixture for preparing a shear strength test sample according to an embodiment of the present invention;

[0038] Figure 3 A schematic diagram of the three-dimensional structure of a gluing tool for a tooling device for preparing a shear strength test sample according to an embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram of the three-dimensional structure of a test fixture of a fixture device for preparing a shear strength test sample according to an embodiment of the present invention installed on a glue coating fixture;

[0040] Figure 5 A schematic diagram of the three-dimensional structure of a bonding tool for a tooling device for preparing a shear strength test sample according to an embodiment of the present invention;

[0041] Figure 6 This is a schematic diagram of a three-dimensional structure in which a test fixture of a fixture device for preparing a shear strength test sample according to an embodiment of the present invention is installed on a bonding fixture;

[0042] Figure 7 This is a second schematic diagram of the three-dimensional structure of a tooling device for preparing a shear strength test sample according to an embodiment of the present invention, in which a test tooling is installed on a bonding tooling;

[0043] Figure 8 This is a schematic diagram of the three-dimensional structure of a pressurizing tool for preparing a shear strength test sample according to an embodiment of the present invention;

[0044] Figure 9 This is a second schematic diagram of the three-dimensional structure of a pressurizing tooling device for preparing a shear strength test sample according to an embodiment of the present invention;

[0045] Figure 10 This is a schematic diagram of the three-dimensional structure of a tooling device for preparing shear strength test samples according to an embodiment of the present invention, in which a testing tooling and a pressurizing tooling are installed on a bonding tooling.

[0046] Description of reference numerals:

[0047] 1. Test tool; 11. Bonding surface; 12. Through hole; 13. Reinforcement protrusion; 2. Glue application tool; 21. Baffle assembly; 22. Slot; 23. Opening; 3. Bonding tool; 30. Mounting groove; 31. First groove; 32. Second groove; 33. Positioning protrusion; 331. First protrusion; 332. Second protrusion; 34. First mounting hole; 4. Pressurizing tool; 41. Pressing plate; 42. Connecting plate; 43. Second mounting hole. DETAILED DESCRIPTION

[0048] In order to make the technical means, objectives and effects of the present invention easier to understand, embodiments of the present invention are described in detail below with reference to specific figures.

[0049] It should be noted that all terms used in the present invention to indicate direction and position, such as "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "top", "low", "lateral", "longitudinal", "center", etc., are only used to explain the relative positional relationship and connection status between the various components in a certain specific state (as shown in the accompanying drawings). They are only for the convenience of describing the present invention, and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention. In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0050] In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical connections; direct connections or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0051] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0052] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0053] Example 1

[0054] Existing techniques for preparing shear test samples typically use adhesives to bond the sample to a pair of test fixtures. This traditional method has the following major problems:

[0055] 1. Uneven glue coating: It is difficult to accurately control the thickness of the glue layer when applying glue manually, which easily leads to uneven glue layer thickness;

[0056] 2. Bonding misalignment: During the bonding process, the two test fixtures and the sample in the middle are prone to positional offset, resulting in non-parallel or misaligned bonding surfaces;

[0057] 3. Difficulty in pressure control: The pressure applied during curing is difficult to accurately control and maintain uniformity. Excessive pressure may damage the sample or the adhesive layer, while too little pressure may affect the bonding strength.

[0058] These problems will lead to unstable quality of prepared samples and affect the accuracy and repeatability of shear strength test results.

[0059] In order to solve the above technical problems, Figures 1 to 10 As shown, this embodiment provides a tooling device for preparing shear strength test samples, the tooling device comprising:

[0060] A test fixture 1, which is used to ultimately perform a shear test on a testing machine. The shear strength test sample is a sample assembly in which the sample to be tested is bonded to two test fixtures 1. There are at least two test fixtures 1, and a bonding surface 11 and a through hole 12 are provided on each test fixture 1.

[0061] The gluing tool 2 is used to evenly apply adhesive on the bonding surface 11. A baffle assembly 21 is provided on the gluing tool 2. The baffle assembly 21 forms a card slot 22. The card slot 22 is used to accommodate the test tool 1. Figure 4 As shown, when the test fixture 1 is placed in the card slot 22, the height of the baffle assembly 21 is higher than the height of the bonding surface 11, and the difference between the height of the baffle assembly 21 and the height of the bonding surface 11 is the thickness of the glue layer; by scraping along the upper edge of the baffle assembly 21 with a scraper, the thickness of the glue layer can be accurately controlled to ensure uniform glue coating, thereby overcoming the problem of manual glue coating that is difficult to accurately control the thickness of the glue layer and prone to uneven thickness;

[0062] A bonding fixture 3 is provided for bonding the two test fixtures 1 to the sample to be tested. A mounting groove 30 is provided on the bonding fixture 3. Positioning protrusions 33 are provided in each of the mounting grooves 30. The positioning protrusions 33 cooperate with the through holes 12. This configuration enables the bonding fixture 3 to accurately position the test fixture 1, effectively preventing dislocation during bonding and avoiding non-parallel or misaligned bonding surfaces 11.

[0063] The pressurizing tool 4 includes a pressing plate 41 and a connecting plate 42. The connecting plate 42 is vertically arranged below the pressing plate 41. When the pressurizing tool 4 applies pressure to the test tool 1 during the bonding process, the pressing plate 41 is horizontally arranged above the test tool 1, and the connecting plate 42 is vertically and fits on one side of the test tool 1. This setting enables the height of the connecting plate 42 to achieve a constant thickness pressurization function, ensuring that the total thickness of the sample and the adhesive layer is constant after bonding, avoiding damage to the sample or the adhesive layer due to uneven pressure, and affecting the bonding strength.

[0064] The tooling device for preparing shear strength test samples described in this embodiment has the following beneficial effects:

[0065] 1. Accurate and uniform glue application: The baffle assembly 21 of the glue application tool 2 forms a slot 22. After the test tool 1 is placed in the slot 22, the height difference between the baffle assembly 21 and the bonding surface 11 is the preset glue layer thickness. By scraping along the upper edge of the baffle assembly 21 with a scraper, the glue layer thickness can be precisely controlled, effectively overcoming the difficulty of precise control and uneven glue layer thickness in manual glue application, ensuring uniform glue application and laying the foundation for high-quality bonding.

[0066] 2. Accurate bonding positioning: The mounting groove 30 of the bonding fixture 3 is provided with a positioning protrusion 33, which cooperates with the through hole 12 on the test fixture 1. During the bonding process, the bonding fixture 3 can accurately position the test fixture 1, effectively preventing the positional offset of the two test fixtures 1 and the sample to be tested in the middle, and avoiding the situation where the bonding surface 11 is not parallel or aligned, thereby ensuring bonding accuracy and reliability;

[0067] 3. Stable and reliable pressurization: The pressurization tooling 4 includes a pressing plate 41 and a connecting plate 42. The connecting plate 42 is vertically arranged below the pressing plate 41. When the pressurization tooling 4 applies pressure to the test tooling 1 during the bonding process, the pressing plate 41 is horizontally arranged above the test tooling 1, and the connecting plate 42 is vertically and closely attached to one side of the test tooling 1. This arrangement enables the height of the connecting plate 42 to achieve a constant thickness pressurization function, ensuring a constant total thickness of the sample and adhesive layer after bonding, avoiding damage to the sample or adhesive layer due to uneven pressure, and reducing the bonding strength.

[0068] 4. Improve the stability of the quality of the prepared samples, so that more accurate and repeatable shear strength test data can be obtained.

[0069] More specifically, a through hole 12 is provided on the test fixture 1. On the one hand, it is convenient for the test fixture 1 to cooperate with the positioning protrusion 33 of the bonding fixture 3 when preparing the shear strength test sample, which can effectively prevent the test fixture 1 from slipping and dislocation during bonding; on the other hand, it is convenient for the first connecting part to connect the test fixture 1 to the testing machine through the through hole 12 during testing, ensuring that the shear surface is vertical and eliminating lateral force interference.

[0070] More specifically, Figure 1 and Figure 2 As shown, a reinforcement protrusion 13 is provided on the test fixture 1, and the through hole 12 is provided on the reinforcement protrusion 13. This arrangement can improve the structural strength of the through hole 12.

[0071] Specifically, the mounting groove 30 includes a first groove 31 and a second groove 32 , wherein the depth of the first groove 31 is greater than that of the second groove 32 ; the first groove 31 is used to place the test fixture 1 forwardly, and the second groove 32 is used to place the test fixture 1 in reverse.

[0072] More specifically, the depth difference between the first groove 31 and the second groove 32 is equal to the thickness of the test sample plus the total thickness of the two adhesive layers.

[0073] More specifically, Figure 5 As shown, the first groove 31 and the second groove 32 form a straight line.

[0074] Furthermore, the number of the mounting grooves 30 is not specifically limited, and the number of the mounting grooves 30 can be set to two, four, six, etc.

[0075] Preferably, in this embodiment, Figure 5 As shown, the number of the mounting grooves 30 is set to six.

[0076] This setup facilitates the preparation of multiple samples at one time, improving sample preparation efficiency.

[0077] Specifically, the positioning protrusion 33 includes a first protrusion 331 and a second protrusion 332 . The first protrusion 331 is disposed in the first groove 31 , and the second protrusion 332 is disposed in the second groove 32 .

[0078] Specifically, the bonding tool 3 is detachably connected to the pressurizing tool 4. The detachable connection between the bonding tool 3 and the pressurizing tool 4 facilitates tool assembly and disassembly, and is convenient for operation and maintenance.

[0079] Specifically, such as Figure 5 As shown, a first mounting hole 34 is provided on the bonding tool 3, and the first mounting hole 34 is used to connect with the pressurizing tool 4 to apply bonding pressure; Figure 8 and Figure 9 As shown, a second mounting hole 43 is provided on the pressurizing fixture 4 , and the second mounting hole 43 matches the first mounting hole 34 .

[0080] More specifically, when the pressurizing tool 4 applies pressure to the test tool 1 during the bonding process, a torque wrench is used to tighten the third connecting piece to connect the pressurizing tool 4 to the bonding tool 3 through the second mounting hole 43 and the first mounting hole 34 in sequence, so that the pressure can be precisely controlled.

[0081] Furthermore, the connecting plate 42 may be vertically arranged on one side below the pressing plate 41 , or may be vertically arranged at a middle position below the pressing plate 41 , which is not specifically limited.

[0082] Preferably, in this embodiment, Figure 8 and Figure 9 As shown, the pressing plate 41 and the connecting plate 42 form a T-shape, and the connecting plate 42 is vertically arranged in the middle position below the pressing plate 41. This arrangement not only allows the height of the connecting plate 42 to achieve a constant thickness and pressure function, ensuring a constant total thickness of the sample and the adhesive layer after bonding, avoiding damage to the sample or adhesive layer due to uneven pressure, and reducing the bonding strength; it also facilitates the preparation of multiple samples at a time, improving sample preparation efficiency.

[0083] More specifically, the second mounting hole 43 is provided through the pressurizing tool 4 .

[0084] More specifically, Figure 9 As shown, the second mounting hole 43 is provided through the center of the connecting plate 42. This arrangement can ensure the pressurizing stability of the pressurizing tool 4.

[0085] Specifically, such as Figure 3 As shown, an opening 23 is provided on one side of the slot 22 to facilitate assembly and removal of the test tool 1 .

[0086] Specifically, the material of the glue coating tool 2 is one of polytetrafluoroethylene, polyimide and silicone materials, which is convenient for cleaning glue overflow, keeping the tool clean, and reducing the impact on subsequent operations.

[0087] Specifically, the thermal expansion coefficient of the material of the bonding tool 3 is less than 20×10 -6 / ℃.

[0088] Preferably, in this embodiment, the bonding tool 3 is made of 45# steel, which ensures stable dimensional accuracy, pressurization accuracy, and improves sample preparation quality.

[0089] Specifically, such as Figure 1 As shown, the bonding surface 11 is polished, machined or sandblasted. This setting can increase the roughness of the bonding surface 11 to improve the bonding strength and make the sample bonded more firmly.

[0090] In a second aspect of this embodiment, a method for preparing a shear strength test sample is provided, wherein the method uses any one of the tooling devices for preparing a shear strength test sample described above, and the method comprises the following steps:

[0091] S1. Cleaning and preparation: Clean the bonding surface 11 of the test fixture 1 with a cleaning agent and dry it;

[0092] S2, gluing: using the gluing tool 2 to apply glue on the bonding surfaces 11 of the two test tools 1 to obtain a gluing layer;

[0093] S3, positioning and bonding: bonding the two test fixtures 1 and the test sample together on the bonding fixture 3;

[0094] S4. Pressurized curing: Place the pressurized fixture 4 on top of the bonded inverted test fixture 1, align the second mounting hole 43 of the pressurized fixture 4 with the first mounting hole 34 of the bonding fixture 3, screw in the third connector using a torque wrench, and then perform curing.

[0095] S5. Post-processing and testing: After curing is completed, remove the third connecting piece and the pressurizing tool 4, take out the bonded sample assembly from the bonding tool 3, clean the cured glue overflowed around the test sample, and after inspection, proceed to the shear strength test.

[0096] The method for preparing a shear strength test sample described in this embodiment has the following beneficial effects:

[0097] 1. Uniform glue layer: Glue coating tool 2 ensures that the thickness of the glue layer is precisely controllable and uniform;

[0098] 2. No bonding dislocation: The design of the mounting groove 30 and positioning protrusion 33 of the bonding tool 3 completely eliminates the slippage and dislocation of the tool during the bonding process;

[0099] 3.Precise and controllable pressure: The pressurizing tool 4 combined with the torque wrench can accurately apply and maintain the required curing pressure;

[0100] 4. High sample quality: significantly improved sample preparation accuracy and sample quality consistency;

[0101] 5. Easy and efficient operation: Tooling operation simplifies the process, improves efficiency, and reduces dependence on operator experience;

[0102] 6. Reliable test results: ultimately obtain more accurate and repeatable shear strength test data.

[0103] Step S2 specifically includes the following steps:

[0104] S21, placing a test tool 1 into the card slot 22 of the glue coating tool 2;

[0105] S22, scraping the adhesive with a scraper, evenly scraping the adhesive against the upper edge of the baffle assembly 21 of the glue coating tool 2, wherein the difference between the height of the baffle assembly 21 and the height of the bonding surface 11 is the thickness of the glue coating layer;

[0106] S23, taking out the glue-coated test tool 1 from the glue-coating tool 2;

[0107] S24. Repeat the above steps to apply glue to another test tool 1.

[0108] Step S3 specifically includes the following steps:

[0109] S31, first place a test fixture 1 coated with glue in the first groove 31 of the bonding fixture 3 in the forward direction, so that the through hole 12 thereof matches the first protrusion 331;

[0110] S32, aligning the sample to be tested on the bonding surface 11 of the test fixture 1;

[0111] S33. Finally, another test fixture 1 coated with glue is placed upside down in the second groove 32 of the bonding fixture 3, with its through hole 12 matching with the second protrusion 332, and its bonding surface 11 precisely aligned with the sample to be tested.

[0112] In this embodiment, a shear test sample of a composite material sheet with a thickness of 0.7 mm is prepared, that is, the thickness of the sample to be tested is 0.7 mm.

[0113] Parameters of tooling device:

[0114] Test fixture 1: The bonding surface 11 of the test fixture 1 has a size of 50 mm×50 mm.

[0115] Glue coating tool 2: The material of the glue coating tool 2 is polytetrafluoroethylene, and the height of the baffle assembly 21 is 1.0 mm higher than the bonding surface 11 of the test tool 1, that is, the designed thickness of the glue coating layer is 1.0 mm.

[0116] Bonding tool 3: The material of bonding tool 3 is aluminum alloy. The depth of the second groove 32 is D1, the depth of the first groove 31 is D2, and the depth difference D2-D1 = 2.2 mm (that is, the thickness of the sample to be tested is 0.7 mm + the total thickness of the two layers of adhesive is 2.0 mm = 2.7 mm. After the pressure tool 4 applies pressure, the glue overflows to ensure that there is no lack of glue on the bonding surface 11. The final thickness of the sample to be tested + the thickness of the two layers of adhesive = 2.2 mm).

[0117] The material of the pressurizing tooling 4 is 45# steel, and the height of the connecting plate 42 is designed according to the depth of the mounting groove 30 of the bonding tooling 3 and the thickness of the testing tooling 1 to ensure that the pressurization is performed at a fixed thickness of 2.2mm.

[0118] In this embodiment, the adhesive used is a polyurethane adhesive, which needs to be cured at room temperature for 7 days.

[0119] The shear strength test was performed on 5 samples prepared using the above-mentioned tooling device and method for preparing shear strength test samples. The test results are shown in Table 1.

[0120] Table 1 Shear strength of prepared shear strength test samples

[0121]

[0122] As shown in Table 1, the standard deviation of the shear strength of the five samples is 0.38 MPa, indicating that the data dispersion between samples is small and the sample preparation repeatability is good.

[0123] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A tooling device for preparing shear strength test samples, characterized in that: The tooling device comprises: A test fixture (1), wherein there are at least two test fixtures (1), and a bonding surface (11) and a through hole (12) are provided on the test fixture (1); A glue coating tool (2), the glue coating tool (2) is used to evenly coat the adhesive on the bonding surface (11), a baffle assembly (21) is provided on the glue coating tool (2), the baffle assembly (21) forms a card slot (22), and the card slot (22) is used to accommodate the test tool (1); when the test tool (1) is placed in the card slot (22), the height of the baffle assembly (21) is higher than the height of the bonding surface (11), and the difference between the height of the baffle assembly (21) and the height of the bonding surface (11) is the thickness of the glue coating layer; A bonding tool (3), the bonding tool (3) is used to bond the two test tools (1) and the sample to be tested together, a mounting groove (30) is provided on the bonding tool (3), and positioning protrusions (33) are provided in the mounting grooves (30), and the positioning protrusions (33) are matched with the through holes (12); A pressurizing tool (4), the pressurizing tool (4) comprising a pressing plate (41) and a connecting plate (42), the connecting plate (42) being vertically arranged below the pressurizing tool (41), the pressurizing tool (41) and the connecting plate (42) forming a T-shape, and when the pressurizing tool (4) applies pressure to the test tool (1) during the bonding process, the pressurizing tool (4) is horizontally arranged above the test tool (1), and the connecting plate (42) is vertically and closely arranged on one side of the test tool (1).

2. A tooling device for preparing a shear strength test sample according to claim 1, characterized in that: The mounting groove (30) comprises a first groove (31) and a second groove (32), the first groove (31) being deeper than the second groove (32), the first groove (31) being used for placing the test fixture (1) in a forward direction, and the second groove (32) being used for placing the test fixture (1) in an inverted direction.

3. A tooling device for preparing a shear strength test sample according to claim 2, characterized in that: The positioning protrusion (33) comprises a first protrusion (331) and a second protrusion (332), wherein the first protrusion (331) is arranged in the first groove (31), and the second protrusion (332) is arranged in the second groove (32).

4. A tooling device for preparing a shear strength test sample according to claim 1, characterized in that: The bonding tool (3) and the pressurizing tool (4) are detachably connected.

5. A tooling device for preparing a shear strength test sample according to claim 4, characterized in that: A first mounting hole (34) is provided on the bonding tool (3), and a second mounting hole (43) is provided on the pressurizing tool (4), wherein the second mounting hole (43) matches the first mounting hole (34).

6. A tooling device for preparing a shear strength test sample according to claim 1, characterized in that: An opening (23) is provided on one side of the card slot (22).

7. A tooling device for preparing a shear strength test sample according to claim 1, characterized in that: The material of the glue coating tool (2) is one of polytetrafluoroethylene, polyimide and silicone material.

8. A tooling device for preparing shear strength test samples according to claim 1, characterized in that: The thermal expansion coefficient of the material of the bonding tool (3) is less than 20×10 -6 / ℃.

9. A tooling device for preparing a shear strength test sample according to claim 1, characterized in that: The bonding surface (11) is polished, machined or sandblasted.

10. A method for preparing a shear strength test sample, characterized in that: The method uses a tooling device for preparing a shear strength test sample according to any one of claims 1 to 9, and the method comprises the following steps: S1. Cleaning and preparation: Clean the bonding surface (11) of the test fixture (1) with a cleaning agent and dry it; S2, gluing: using a gluing tool (2) to apply glue on the bonding surfaces (11) of the two test tools (1) to obtain a gluing layer; S3, positioning and bonding: bonding the two test fixtures (1) and the test sample together on the bonding fixture (3); S4, pressurizing and curing: placing the pressurizing fixture (4) on top of the bonded inverted test fixture (1), aligning the second mounting hole (43) of the pressurizing fixture (4) with the first mounting hole (34) of the bonding fixture (3), screwing in the third connecting piece, and then curing; S5. Post-processing and testing: After the curing is completed, remove the third connecting piece and the pressurizing fixture (4), take out the sample assembly of the sample to be tested bonded to the two test fixtures (1) from the bonding fixture (3), clean the curing glue overflowed around the sample to be tested, and after inspection, proceed to the shear strength test.

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