Multi-angle metal material tension-shear test fixture

Abstract

The utility model discloses a multi-angle metal material tension shear test clamp which at least comprises but is not limited to a first clamping part and a second clamping part which are arranged at a preset interval. The first clamping part and the second clamping part are each provided with an angle adjusting hole and an index plate used in cooperation with the angle adjusting hole, each index plate is provided with a limiting assembly used for limiting a sample, and the index plates and the angle adjusting holes can be locked at different angles; according to the scheme, during use, a sample is clamped into the limiting assembly, the index plate is rotated to reach a preset testing angle, then a tensile test is carried out, the sample can be efficiently rotated and adjusted at different angles through the angle adjusting hole and the index plate which are specially arranged in the scheme, clamping can be rapidly and stably carried out, and the tensile strength of the sample is improved. And meanwhile, rapid adjustment can be carried out according to experiment requirements, so that the tensile stress values of the sample at different angles can be tested.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical property testing of metal materials, in particular to a multi-angle metal material tension and shear testing fixture. Background Art

[0002] When testing the mechanical properties of metal materials, different loading methods will result in different mechanical responses. Typical mechanical properties testing methods include uniaxial tension, simple shear, notch tension, etc. Generally, for different test methods, the morphology and geometric dimensions of the specimens are different, and the test fixtures are also different. In addition, if you want to test complex stress ratios, the geometry and morphology of the specimens and the fixture design are more complicated. From the above, it can be seen that the existing test fixtures have the following shortcomings:

[0003] A single fixture cannot test the specimen at different angles. If you want to test at multiple angles, you need multiple devices to cooperate in the experiment, which undoubtedly increases the overall cost and the test efficiency is also low. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-angle metal material tensile shear test fixture to address the above-mentioned shortcomings, thereby solving the problem that a single fixture in the prior art cannot test the sample at different angles. If multiple angles are to be tested, multiple devices are required to cooperate in the experiment, which undoubtedly increases the overall cost and the test efficiency is also low.

[0005] The utility model is realized by the following scheme:

[0006] A multi-angle metal material tensile shear test fixture includes at least but not limited to a first clamping part and a second clamping part, wherein the first clamping part and the second clamping part are arranged at a predetermined distance, and the first clamping part and the second clamping part are both provided with angle adjustment holes and a dividing plate used in conjunction with the angle adjustment holes, and the dividing plate is provided with a limit assembly for limiting a specimen, and the dividing plate can be locked with the angle adjustment hole at different angles.

[0007] Based on the structure of the above-mentioned multi-angle metal material tensile shear test fixture, the interval between the first clamping part and the second clamping part is not less than 10 mm, and the second clamping part has the same structure as the first clamping part.

[0008] Based on the structure of the above-mentioned multi-angle metal material tensile shear test fixture, the first clamping part includes a first adapter block and a first mounting body; a mounting groove adapted to the shape of the first adapter block is provided at the top position of the first mounting body, a first assembly hole is provided in the mounting groove, and a second assembly hole is provided on the first adapter block, and bolts are passed through the first assembly hole and the second assembly hole to connect the first adapter block and the first mounting body as a whole.

[0009] Based on the structure of the above-mentioned multi-angle metal material tensile shear test fixture, a first mating groove is embedded in the bottom position of the first mounting body; the first mating groove is a semicircular structure as a whole, and the angle adjustment hole passes through the first mating groove. There are multiple angle adjustment holes in the first mating groove, and the contour formed by the multiple angle adjustment holes is adapted to the arc contour of the first mating groove.

[0010] Based on the structure of the above-mentioned multi-angle metal material tensile shear test fixture, the angle adjustment holes are set to 11, and the rotation angle between adjacent angle adjustment holes is 15°.

[0011] Based on the structure of the above-mentioned multi-angle metal material tensile shear test fixture, adjustment grooves are arranged on both sides of the first mounting body; the adjustment grooves are symmetrically arranged along the center position of the first mounting body, and the adjustment grooves are provided with adjustment holes that penetrate into the first matching groove; and an adjustment screw is arranged in the adjustment hole.

[0012] Based on the structure of the above-mentioned multi-angle metal material tensile shear test fixture, the dividing plate is a semicircular structure as a whole, and is provided with angle matching holes with the same size and position as the angle adjustment holes on the dividing plate; the number of the angle matching holes is the same as the number of the angle adjustment holes; and the dividing plate is also provided with locking holes.

[0013] Based on the structure of the above-mentioned multi-angle metal material tensile shear test fixture, a locking cavity is arranged at the center position of the dividing plate; the locking cavity is arranged through the dividing plate, and the locking cavity includes a sliding cavity, a manual adjustment cavity and a loading cavity; one side position of the sliding cavity is connected to the manual adjustment cavity, the loading cavity is arranged at the bottom of the sliding cavity, and the loading cavity is arranged through the bottom position of the dividing plate.

[0014] Based on the structure of the above-mentioned multi-angle metal material tensile and shear test fixture, the limit assembly includes a positive pressure block and a top pressure block; the positive pressure block is provided with a connecting hole that cooperates with the locking hole; the top pressure block is arranged in the sliding cavity; the bottom position of the positive pressure block is provided with a positive pressure protrusion that is adapted to the size of the cavity.

[0015] Based on the structure of the above-mentioned multi-angle metal material tensile shear test fixture, the top pressure block is a right-angle trapezoidal structure as a whole, the sliding cavity is provided with an inclined surface adapted to the inclined surface of the right-angle trapezoidal structure, an adjustment screw hole is provided between the two parallel surfaces of the top pressure block, and an adjustment bolt is provided in the adjustment screw hole.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0017] 1. When using this solution, the sample is inserted into the limit assembly, and the predetermined test angle is reached by rotating the dividing plate, and then the tensile test is performed. The angle adjustment holes and dividing plate specially set in this solution can efficiently rotate and adjust the sample at different angles. It can not only clamp quickly and stably, but also can be quickly adjusted according to the experimental requirements to test the tensile force value of the sample at different angles.

[0018] 2. Through this solution, this tooling can complete the stretching of various angles under the conditions of a single clamping method, a single tooling and a single geometric size sample, which simplifies the implementation process of various mechanical tests. In addition, a sample window is reserved, which can be supplemented by DIC to measure the strain field of the observed area. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the explosion structure of the first clamping part in the utility model;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the locking cavity in the utility model;

[0022] Figure 4 It is the structural schematic diagram of the sample;

[0023] Description of the drawings: 1. First clamping part; 2. Second clamping part; 3. Angle adjustment hole; 4. Dividing plate; 11. First adapter block; 12. First mounting body; 13. Mounting slot; 14. First assembly hole; 15. Second assembly hole; 16. First matching slot; 17. Adjustment slot; 18. Adjustment hole; 41. Angle matching hole; 42. Locking hole; 43. Sliding cavity; 44. Manual adjustment cavity; 45. Loading cavity; 51. Positive pressure block; 52. Top pressure block; 511. Connecting hole; 512. Positive pressure protrusion; 521. Adjustment screw hole. DETAILED DESCRIPTION

[0024] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0025] Any feature disclosed in this specification (including any additional claims and abstract), unless otherwise stated, may be replaced by other equivalent or alternative features having similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0026] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0027] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0028] Example 1

[0029] like Figure 1 to Figure 4 As shown, the utility model provides a technical solution:

[0030] A multi-angle metal material tensile shear test fixture, which at least includes but is not limited to a first clamping part 1 and a second clamping part 2, the first clamping part 1 and the second clamping part 2 are arranged at a predetermined distance, the first clamping part 1 and the second clamping part 2 are both provided with an angle adjustment hole 3 and a dividing plate 4 used in conjunction with the angle adjustment hole 3, the dividing plate 4 is provided with a limit assembly for limiting the sample, and the dividing plate 4 can be locked with the angle adjustment hole 3 at different angles.

[0031] Based on the above structure, when in use, the sample is inserted into the limit assembly, and the predetermined test angle is reached by rotating the dividing plate 4, and then the tensile test is performed. The angle adjustment hole 3 and the dividing plate 4 specially arranged in this scheme can efficiently rotate and adjust the sample at different angles, which can not only clamp quickly and stably, but also can be quickly adjusted according to the experimental requirements to test the tensile force value of the sample at different angles.

[0032] As an example, the interval between the first clamping part 1 and the second clamping part 2 is not less than 10 mm. By setting the interval, on the one hand, the deformation of the sample can be observed intuitively. Another solution is to use digital image correlation technology (Digital Image Correlation) in the interval area to measure the strain field of the observed area.

[0033] As an example, the first clamping portion 1 may include a first adapter block 11 and a first mounting body 12; a mounting groove 13 adapted to the shape of the first adapter block 11 is provided at the top position of the first mounting body 12, a first assembly hole 14 is provided in the mounting groove 13, and a second assembly hole 15 is provided on the first adapter block 11, and bolts are passed through the first assembly hole 14 and the second assembly hole 15 to connect the first adapter block 11 and the first mounting body 12 as a whole.

[0034] A first matching groove 16 is embedded in the bottom position of the first mounting body 12; the first matching groove 16 is a semicircular structure as a whole, and the angle adjustment hole 3 is set through the first matching groove 16. There are multiple angle adjustment holes 3 in the first matching groove 16, and the contour formed by the multiple angle adjustment holes 3 is adapted to the arc contour of the first matching groove 16.

[0035] Based on the above structure, the angle adjustment hole 3 is configured to match the profile of the first matching groove 16, so as to facilitate fixing the dividing plate 4 after rotation, make the angle adjustment smoother, and also improve the fixing efficiency.

[0036] As an example, the number of the angle adjustment holes 3 is 11, the rotation angle between adjacent angle adjustment holes 3 is 15°, and low alloy steel such as 45# steel or 40Cr is used and subjected to quenching and tempering treatment.

[0037] As an example, adjustment grooves 17 are provided on both sides of the first mounting body 12; the adjustment grooves 17 are symmetrically arranged along the center position of the first mounting body 12, and an adjustment hole 18 penetrating into the first matching groove 16 is provided on the adjustment groove 17; an adjustment screw can be provided in the adjustment hole 18;

[0038] Based on the above structure, during use, due to reasons of machining accuracy, the dividing plate 4 cannot be perfectly matched with the angle adjustment hole 3 on the first matching groove 16. At this time, it is necessary to finely adjust the position of the dividing plate 4 by adjusting the screw. The adjustment groove 17 is provided, on the one hand, to shorten the use of the adjusting screw, and on the other hand, to provide space for manual adjustment to prevent interference.

[0039] As an example, the indexing plate 4 is a semicircular structure as a whole, and is provided with angle matching holes 41 of the same size and position as the angle adjustment holes 3; the number of the angle matching holes 41 is the same as the number of the angle adjustment holes 3; the indexing plate 4 is also provided with locking holes 42;

[0040] A locking cavity is arranged at the center position of the dividing disk 4; the locking cavity is arranged through the dividing disk 4, and the locking cavity may include a sliding cavity 43, a manual adjustment cavity 44 and a loading cavity 45; one side position of the sliding cavity 43 is connected to the manual adjustment cavity 44, and the loading cavity 45 is arranged at the bottom of the sliding cavity 43, and the loading cavity 45 is arranged through the bottom position of the dividing disk 4.

[0041] The limiting assembly may include a positive pressure block 51 and a top pressure block 52; the positive pressure block 51 is provided with a connecting hole 511 that cooperates with the locking hole 42; the top pressure block 52 is arranged in the sliding cavity 43; the bottom position of the positive pressure block 51 is provided with a positive pressure protrusion 512 that is adapted to the size of the loading cavity.

[0042] Based on the above structure, when fixing the sample, first place the upper and lower ends of the sample in the loading cavity 45. At this time, the top pressure block limits the top position of the sample. When the positive pressure block 51 is locked on the dividing plate 4, the two sides of the upper end position of the sample are respectively in contact with the positive pressure protrusion 512 and the loading cavity 45 of the dividing plate, so that the upper end position of the sample is pressed and fixed. The lower end position is similarly performed, and finally the sample is fixed. The manual adjustment cavity 44 is provided to facilitate the adjustment of the bolt.

[0043] As an example, the top pressure block 52 is a right-angled trapezoidal structure as a whole, and an inclined surface adapted to the inclined surface of the right-angled trapezoidal structure is provided in the sliding cavity 43. An adjusting screw hole 521 is provided between two parallel surfaces of the top pressure block 52, and an adjusting bolt can be provided in the adjusting screw hole 521;

[0044] Based on the above structure, the locking of the top position of the sample is achieved by adjusting the bolt. The inclined surface of the top pressure block 52 contacts the inclined surface of the sliding cavity 43, and the adjusting bolt passes through the adjusting screw hole 521 to contact the side wall of the sliding cavity 43. By rotating the adjusting bolt, the top pressure block 52 slides until the sample is locked.

[0045] The sample in this embodiment is a dumbbell-shaped structure as a whole, which is a conventional structure in the art.

[0046] The second clamping portion 2 has the same structure as the first clamping portion 1 and will not be described in detail herein.

[0047] Through this solution, this tooling can complete the stretching of various angles under the conditions of a single clamping method, a single tooling and a single geometric size sample, which simplifies the implementation process of various mechanical testing work. In addition, a sample window is reserved, which can be supplemented by DIC to measure the strain field of the observed area.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-angle metal material tensile shear test fixture, characterized in that: At least includes but is not limited to a first clamping part and a second clamping part, the first clamping part and the second clamping part are arranged at a predetermined distance, the first clamping part and the second clamping part are both provided with an angle adjustment hole and a dividing plate used in conjunction with the angle adjustment hole, the dividing plate is provided with a limit assembly for limiting the sample, and the dividing plate can be locked with the angle adjustment hole at different angles.

2. A multi-angle metal material tensile shear test fixture as claimed in claim 1, characterized in that: The interval between the first clamping portion and the second clamping portion is not less than 10 mm, and the second clamping portion has the same structure as the first clamping portion.

3. A multi-angle metal material tensile shear test fixture as claimed in claim 2, characterized in that: The first clamping portion includes a first adapter block and a first mounting body; a mounting groove adapted to the shape of the first adapter block is provided at the top position of the first mounting body, a first assembly hole is provided in the mounting groove, and a second assembly hole is provided on the first adapter block, and bolts are passed through the first assembly hole and the second assembly hole to connect the first adapter block and the first mounting body as a whole.

4. A multi-angle metal material tensile shear test fixture as claimed in claim 3, characterized in that: A first matching groove is embedded in the bottom position of the first mounting body; the first matching groove is a semicircular structure as a whole, the angle adjustment hole passes through the first matching groove, and there are multiple angle adjustment holes in the first matching groove, and the contour formed by the multiple angle adjustment holes is adapted to the arc contour of the first matching groove.

5. A multi-angle metal material tensile shear test fixture as claimed in claim 4, characterized in that: The number of the angle adjustment holes is 11, and the rotation angle between adjacent angle adjustment holes is 15°.

6. A multi-angle metal material tensile shear test fixture as claimed in claim 5, characterized in that: Adjustment grooves are arranged on both sides of the first mounting body; the adjustment grooves are symmetrically arranged along the center position of the first mounting body, and the adjustment grooves are provided with adjustment holes penetrating into the first matching groove; and the adjustment holes are provided with adjustment screws.

7. A multi-angle metal material tensile shear test fixture as claimed in claim 6, characterized in that: The indexing plate is a semicircular structure as a whole, and is provided with angle matching holes of the same size and position as the angle adjustment holes; the number of the angle matching holes is the same as the number of the angle adjustment holes; and the indexing plate is also provided with locking holes.

8. A multi-angle metal material tensile shear test fixture as claimed in claim 7, characterized in that: A locking cavity is arranged at the center position of the dividing plate; the locking cavity is arranged through the dividing plate, and the locking cavity includes a sliding cavity, a manual adjustment cavity and a loading cavity; one side position of the sliding cavity is connected to the manual adjustment cavity, the loading cavity is arranged at the bottom of the sliding cavity, and the loading cavity is arranged through the bottom position of the dividing plate.

9. A multi-angle metal material tensile shear test fixture as claimed in claim 8, characterized in that: The limiting assembly includes a positive pressure block and a top pressure block; the positive pressure block is provided with a connecting hole that matches the locking hole; the top pressure block is arranged in the sliding cavity; the bottom position of the positive pressure block is provided with a positive pressure protrusion that matches the size of the cavity.

10. A multi-angle metal material tensile shear test fixture as claimed in claim 9, characterized in that: The top pressure block is a right-angled trapezoidal structure as a whole, an inclined surface matching the inclined surface of the right-angled trapezoidal structure is arranged in the sliding cavity, an adjusting screw hole is arranged between two parallel surfaces of the top pressure block, and an adjusting bolt is arranged in the adjusting screw hole.

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