Spherical sample clamping device for testing binding property of film and matrix

Abstract

The utility model discloses a spherical sample clamping device for testing the bonding performance of a film and a substrate. Wherein a base sleeve and a base bolt are fixed on the upper surface of the fixing plate, the base bolt is arranged in the center of the fixing plate, a bolt half hole matched with the base bolt is formed in the center of the lower end of the base supporting column, the bolt half hole is matched with threads of the base bolt, and the depth of a threaded hole is the same as the length of the base bolt; a ball containing groove is formed in the center of the upper end of the base strut. The fastening nut comprises an upper ball clamping part and a lower wall part, threads are arranged on the peripheral surface of the outer side wall of the base sleeve, and the inner surface of the wall part is connected with the outer side wall of the base sleeve through the threads; a round hole in the ball clamping part is smaller than the diameter of the spherical sample, the whole wall part is in a hollow cylinder shape, and the upper portion and the lower portion of the spherical sample are clamped by the ball clamping part and the ball containing groove respectively. According to the utility model, on the premise that the spherical sample is not cut, the test of the surface film bonding performance of the spherical sample can be efficiently completed.

Description

Technical Field

[0001] The utility model belongs to the technical field of film-to-substrate bonding performance testing, in particular to a spherical sample clamping device for testing the film-to-substrate bonding performance testing. Background Art

[0002] Thin film technology is a reliable means to improve material properties. By preparing thin films on the surface of materials, the surface properties of materials, such as mechanical properties, friction and wear properties, and corrosion resistance, can be significantly improved. It is widely used in aerospace, marine engineering, medical equipment and other fields. The bonding performance between the film and the substrate material is one of the important indicators for evaluating the comprehensive performance and service life of the film material. In order to investigate the service life of the film material on the surface of the workpiece, it is usually necessary to test the bonding performance between the film material and the workpiece. The scratch method is a method for testing the bonding performance between the film and the substrate. Usually, the scratch tester can only test square or disc samples, because the spherical sample cannot be firmly clamped. Therefore, before the test, the side or bottom of the spherical sample needs to be processed into a plane before further testing. However, the film may be damaged during the processing, resulting in a large error in the test results; in addition, as the load increases during the test, the sample may become loose, which will lead to test failure and reduce work efficiency. Therefore, without cutting the sample, a clamping device is needed to assist in completing the test of the bonding performance of the spherical sample. Utility Model Content

[0003] In view of the problems existing in the background technology, the utility model provides a spherical sample clamping device for testing the bonding performance of a film and a substrate. The technical solution includes: a fixing plate, a base component group, a fastening nut and a spherical sample, wherein the base component group includes: a base support, a base sleeve and a base bolt. The upper surface of the fixing plate is fixed with a base sleeve and a base bolt. The base bolt is arranged in the center of the fixing plate. A bolt half hole matching the base bolt is arranged in the center of the lower end of the base support. The bolt half hole is adapted to the thread of the base bolt, and the depth of the threaded hole is the same as the length of the base bolt. A ball receiving groove is arranged in the center of the upper end of the base support.

[0004] The fastening nut includes an upper ball clamping portion and a lower wall portion. The outer wall circumference of the base sleeve is provided with threads, and the inner surface of the wall portion is connected to the outer wall of the base sleeve by threads; the circular hole in the ball clamping portion is smaller than the diameter of the spherical specimen, and the wall portion is a hollow cylindrical shape as a whole. The upper and lower portions of the spherical specimen are clamped by the ball clamping portion and the sphere receiving groove respectively.

[0005] The fixing plate is square, and base mounting holes are arranged at four corners of the fixing plate. Bolts are threadedly connected to the base mounting holes, and the lower ends of the bolts are connected to the threaded holes on the testing machine.

[0006] A gasket is arranged between the bolt and the fixing plate.

[0007] The ball clamping portion and the wall portion are integrally fixedly connected.

[0008] The outer portion of the lower end of the fastening nut is a regular hexagonal prism.

[0009] The ball receiving groove is cylindrical.

[0010] The beneficial effects of the utility model are: it makes up for the deficiency that the scratch tester cannot clamp the spherical sample, and can efficiently complete the test of the thin film bonding performance of the surface of the spherical sample without cutting the spherical sample. At the same time, the spherical sample clamping device has a reasonable structure, simple operation and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a longitudinal sectional schematic diagram of an embodiment of a spherical sample clamping device for testing the bonding performance of a film and a substrate according to the utility model;

[0012] Figure 2 It is a schematic diagram of the structure of an embodiment of the utility model;

[0013] Figure 3 It is a schematic top view of an embodiment of the utility model.

[0014] Among them: 1 is a fixing plate; 2 is a base component group; 3 is a fastening nut; 4 is a spherical specimen; 5 is a ball clamping space; 6 is a support adjustment space; 101 is a bolt; 102 is a gasket; 103 is a base mounting hole; 201 is a base sleeve; 202 is a base bolt; 203 is a base support; 205 is a bolt half hole; 206 is a ball receiving groove; 301 is a ball clamping part; 302 is a wall part. DETAILED DESCRIPTION

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0016] like Figure 1 to Figure 3 The embodiment of the utility model shown comprises: a fixing plate 1, a base member group 2, a fastening nut 3 and a spherical specimen 4, wherein the fixing plate 1 is square, and four corners of the fixing plate 1 are provided with base mounting holes 103, bolts 101 are threadedly connected with the base mounting holes 103, and the lower end of the bolt 101 is connected with a threaded hole on the testing machine;

[0017] The base component group 2 includes: a base support 203, a base sleeve 201 and a base bolt 202. The base sleeve 201 and the base bolt 202 are fixed to the upper surface of the fixing plate 1. The base bolt 202 is arranged in the center of the fixing plate 1. A bolt half hole 205 matching the base bolt 202 is arranged in the center of the lower end of the base support 203. The bolt half hole 205 is adapted to the thread of the base bolt 202, and the depth of the threaded hole is the same as the length of the base bolt 202. A support adjustment space 6 is formed between the side wall of the base support 203 and the inner wall of the base sleeve 201, so that the base support 203 can be manually rotated to adjust the height of the base support 203. A ball receiving groove 206 is arranged in the center of the upper end of the base support 203.

[0018] The fastening nut 3 includes an upper ball clamping portion 301 and a lower wall portion 302, the ball clamping portion 301 and the wall portion 302 are integrally fixed, the outer wall circumference of the base sleeve 201 is provided with threads, and the inner surface of the wall portion 302 is provided with threads matching the outer wall of the base sleeve 201, so that the fastening nut 3 can be manually rotated to adjust the height of the fastening nut 3;

[0019] The circular hole in the ball clamping portion 301 is smaller than the diameter of the spherical sample 4, and the wall portion 302 is generally in the shape of a hollow cylinder. A spherical clamping space 5 for accommodating the spherical sample 4 is enclosed between the ball clamping portion 301, the wall portion 302 and the base support 203; after the fastening nut 3 is tightened downward by threads, the upper and lower parts of the spherical sample 4 are clamped by the ball clamping portion 301 and the spherical accommodating groove 206 respectively, and the spherical sample 4 is thereby locked in the spherical clamping space 5.

[0020] In this embodiment, a gasket 102 is provided between the bolt 101 and the fixing plate 1 .

[0021] In this embodiment, the outer portion of the lower end of the fastening nut 3 is a regular hexagonal prism.

[0022] In this embodiment, the ball receiving groove 206 is cylindrical.

[0023] During operation, first remove the fastening nut 3, rotate the base support 203 to adjust the height to a suitable position according to the size of the spherical sample 4, then place the spherical sample 4 in the cylindrical groove on the upper surface of the base support 203 with the area to be tested facing upwards, then install the fastening nut 3 and tighten it with a wrench to ensure that the spherical sample 4 is fixed in the clamping device and will not loosen, then use a wrench to tighten the bolt 101, connect the clamping device to the testing machine, and thus place the clamping device on the testing machine.

Claims

1. A spherical sample clamping device for testing the bonding performance of a film and a substrate, characterized in that: include: A fixing plate (1), a base component group (2), a fastening nut (3) and a spherical specimen (4), wherein the base component group (2) comprises: a base support (203), a base sleeve (201) and a base bolt (202); the base sleeve (201) and the base bolt (202) are fixed to the upper surface of the fixing plate (1); the base bolt (202) is arranged at the center of the fixing plate (1); a bolt half hole (205) matching the base bolt (202) is arranged at the center of the lower end of the base support (203); the bolt half hole (205) is adapted to the thread of the base bolt (202); the depth of the threaded hole is the same as the length of the base bolt (202); and a ball receiving groove (206) is arranged at the center of the upper end of the base support (203); The fastening nut (3) comprises an upper ball clamping portion (301) and a lower wall portion (302); the outer wall circumference of the base sleeve (201) is provided with threads; the inner surface of the wall portion (302) is connected to the outer wall of the base sleeve (201) by threads; the circular hole in the ball clamping portion (301) is smaller than the diameter of the spherical sample (4); the wall portion (302) is in the shape of a hollow cylinder as a whole; the upper and lower portions of the spherical sample (4) are clamped by the ball clamping portion (301) and the ball receiving groove (206) respectively.

2. A spherical sample clamping device for testing the bonding performance of a film and a substrate according to claim 1, characterized in that: The fixing plate (1) is square, and base mounting holes (103) are arranged at four corners of the fixing plate (1). Bolts (101) are threadedly connected to the base mounting holes (103), and the lower ends of the bolts (101) are connected to threaded holes on the testing machine.

3. A spherical sample clamping device for testing the bonding performance of a film and a substrate according to claim 2, characterized in that: A gasket (102) is provided between the bolt (101) and the fixing plate (1).

4. A spherical sample clamping device for testing the bonding performance of a film and a substrate according to claim 1, characterized in that: The ball clamping portion (301) and the wall portion (302) are integrally fixedly connected.

5. A spherical sample clamping device for testing the bonding performance of a film and a substrate according to claim 1, characterized in that: The outer portion of the lower end of the fastening nut (3) is a regular hexagonal prism.

6. A spherical sample clamping device for testing the bonding performance of a film and a substrate according to claim 1, characterized in that: The ball receiving groove (206) is cylindrical.

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