Tool for correcting and adjusting centering of pneumatic clamp sample in tensile experiment

Abstract

The utility model discloses a tool for correcting and adjusting centering of a tensile experiment pneumatic clamp sample, and relates to a tensile experiment pneumatic clamp. A concave sleeve ruler design is adopted, and the sleeve ruler comprises a middle concave part and two side flat parts; the middle concave part is positioned at the central part of the sleeve ruler and is designed into a concave shape; the two side flat parts are handheld parts, and the handheld parts are located on the two sides of the middle concave part, are handheld parts for an operator to take the sleeve ruler and are used for facilitating taking and measuring. A scale is arranged on the middle concave part, is carved on the surface of the middle concave part, and is used for indicating the position of the sample in the pneumatic clamp so as to help an operator to accurately adjust the position of the sample; the size of the concave part in the middle of the sleeve ruler is matched with the size of the protruding part of the clamping piece on the corresponding pneumatic clamp, so that the sleeve ruler can be tightly attached to the clamping piece in the using process, and stable supporting and positioning are provided. The ruler is simple in structure and convenient to use, the problem that a common ruler cannot be attached is solved, and accurate measurement and convenient correction are achieved.

Description

Technical Field

[0001] The utility model relates to a pneumatic clamp for a tensile test, in particular to a tool for correcting and adjusting the centering of a sample of the pneumatic clamp for a tensile test. Background Art

[0002] The universal material testing machine is the product of the combination of modern electronic technology and mechanical transmission technology. It is a large-scale precision testing instrument that fully utilizes the respective strengths of electromechanics. It can perform multiple performance tests such as stretching, compression, bending, peeling, shearing, etc. on various materials, and has the characteristics of wide measurement range, high precision, and fast response. Among them, the material tensile test is one of the most common and important test methods in the mechanical property test of materials. It has the characteristics of being simple and easy to operate, and easy to prepare the specimen. Through the tensile test, the basic mechanical properties of the material can be obtained, such as elastic modulus, yield strength, tensile strength, elongation after fracture, cross-sectional shrinkage, strain hardening index and plastic strain ratio. The material strength and plastic performance data obtained by the tensile test have very important application value and reference value for design and material selection, development of new materials, procurement and acceptance of materials, quality control of products, safety and evaluation of equipment. Some are directly based on the results of the tensile test. Whether the results of the material tensile test are accurate and reliable, the efficiency of the test, and the labor intensity of the operator are closely related to whether the fixture structure is advanced or not. At present, pneumatic clamps are already used in many tensile tests of small-load materials in my country. After being used for a period of time, pneumatic clamps often have the problem of non-centering clamping, resulting in inaccurate tests and requiring timely adjustments. Utility Model Content

[0003] The purpose of the utility model is to solve the problem of inaccurate testing caused by the non-centering of the pneumatic clamp for stretching, and to provide a tool with simple structure and convenient use for correcting and adjusting the centering of the pneumatic clamp for stretching tests, so as to ensure that the upper and lower clamps of the sample clamping are kept in the same plane, thereby ensuring the accuracy of the stretching test.

[0004] The utility model discloses a tool for correcting and adjusting the centering of a sample of a pneumatic clamp for a tensile test, which adopts a concave ruler design, and the ruler comprises a middle concave portion and two flat portions on both sides;

[0005] The middle concave portion is located at the center of the ruler and is designed to be concave. The middle concave portion is used to insert the pneumatic clamping piece so that the tool fits tightly on the pneumatic clamping piece.

[0006] The two flat parts are hand-held parts, which are located on both sides of the middle concave part and are the hand-held parts for the operator to hold the set ruler for easy holding and measurement;

[0007] The middle concave portion is provided with a ruler, which is engraved on the surface of the middle concave portion, and is used to indicate the position of the sample in the pneumatic clamp to help the operator accurately adjust the position of the sample; the ruler includes scale lines and numbers, and indicates the distance in millimeters;

[0008] The size of the middle recess of the ruler sleeve matches the size of the protruding portion of the clamp on the corresponding pneumatic clamp, so as to ensure that the ruler sleeve can fit tightly on the clamp during use and provide stable positioning.

[0009] The length of the middle concave portion may be 28 to 32 mm, and the depth of the middle concave portion may be 15 to 18 mm.

[0010] The total length of the ruler can be 26 to 30 mm. The scale of the ruler is set as follows: 0 in the middle, 13 to 15 scales on the left and right, and each scale is 1 mm.

[0011] The lengths of the two sides of the two flat parts are both 36-40 mm, and the heights are both 25-40 mm.

[0012] The thickness of the ruler set may be 5 to 8 mm.

[0013] Compared with the prior art, the advantages and technical effects of the utility model are:

[0014] The utility model is an auxiliary tool used for inserting a pneumatic clamp. The utility model has a simple structure and is easy to use. It can ensure that the sample is correctly aligned in the pneumatic clamp to obtain accurate test results. The ruler has a middle concave portion and flat portions on both sides, which is convenient for the operator to take and put it on the clamp of the pneumatic clamp. The scale on the middle concave portion helps to accurately adjust the position of the sample. The size of the ruler is set according to the size of the clamp of the pneumatic clamp, and can adapt to different pneumatic clamp models to ensure a close fit and stability. Since the ruler used in the utility model matches the width of the pneumatic clamp clamp, the problem that an ordinary ruler cannot fit is solved, and accurate measurement and convenient correction are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the front appearance of an embodiment of the utility model.

[0016] Figure 2 Schematic diagram of the scale of the ruler according to the embodiment of the present utility model.

[0017] Figure 3 It is a schematic diagram of the side thickness of an embodiment of the utility model.

[0018] Figure 4 This is a reference diagram of the use status of an embodiment of the utility model. DETAILED DESCRIPTION

[0019] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.

[0020] See also Figures 1 to 4 , provides a tool embodiment for correcting and adjusting the centering of a pneumatic clamp sample in a tensile test, wherein the pneumatic clamp described in the embodiment adopts the pneumatic clamp of the Shimadzu universal testing machine AGS-X series.

[0021] This embodiment adopts a concave ruler design, which is provided with a concave portion 1, a hand-held handle 2 and a ruler scale 3, which matches the protruding portion 4 of the clamp clip.

[0022] The recess 1 is located at the center of the ruler and is designed to be concave. The recess 1 is used to insert the pneumatic clamping piece so that the tool fits tightly on the pneumatic clamping piece.

[0023] The hand-held handles 2 are located on both sides of the recessed portion 1 and are the hand-held parts for the operator to hold the set ruler for convenient holding and measurement;

[0024] The recess 1 is provided with a set ruler 3, which is used to indicate the position of the sample in the pneumatic clamp to help the operator accurately adjust the position of the sample; the set ruler 3 includes scale lines and numbers, which represent the distance in millimeters;

[0025] The dimensions of the recess 1 are: 28 mm in length, 5 mm in thickness, and 15 mm in depth.

[0026] The dimensions of the hand-held handle 2 are: 36 mm in length, 25 mm in height, and 5 mm in thickness.

[0027] The scale of the ruler set 3 is 0 in the middle, and there are 13 scales on the left and right, each scale is 1mm.

[0028] like Figure 4 When using the utility model, the operating steps are as follows:

[0029] 1. Put the pneumatic clamp calibration ruler on the outer part of the pneumatic clamp jaws. Make sure the ruler fits tightly on the jaws and the middle concave part matches the protruding part of the jaws.

[0030] 2. Observe the scale on the middle concave part of the ruler. The 0 point on the scale indicates the center position of the sample in the pneumatic fixture.

[0031] 3. Start the upper pneumatic clamp to clamp the sample. During the clamping process, pay attention to the position of the sample on the ruler. If the sample is at 0, it means that the pneumatic clamp has clamped the sample correctly. Use the same method to calibrate the lower pneumatic clamp to ensure that the pneumatic clamp is clamped correctly.

[0032] 4. If the clamped sample is not at the 0 point, the pneumatic clamp needs to be adjusted. The adjustment method includes repositioning the sample, adjusting the clamp pressure, or checking whether the clamp is damaged, etc., until the sample is at the 0 point.

[0033] 5. When all samples are at 0 point, you can remove the calibration tool and start testing.

[0034] The utility model can ensure that the sample is correctly centered in the pneumatic fixture through the precise indication of the ruler, so as to obtain more accurate test results. The process of sample clamping and positioning can be simplified, so as to improve work efficiency and reduce errors caused by sample position deviation. The utility model can be applied to pneumatic fixtures of different models. The size can be designed according to actual needs to meet different test requirements.

[0035] The above embodiments are only preferred embodiments of the present invention and cannot be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A tool for calibrating and adjusting the centering of a pneumatic gripper sample for a tensile test, characterized in that The concave ruler design is adopted, and the ruler includes a concave part in the middle and flat parts on both sides; The middle concave portion is located at the center of the ruler and is designed to be concave. The middle concave portion is used to insert the pneumatic clamping piece so that the tool fits tightly on the pneumatic clamping piece. The two flat parts are hand-held parts, which are located on both sides of the middle concave part and are the hand-held parts for the operator to hold the set ruler for easy holding and measurement; The middle concave portion is provided with a ruler, which is engraved on the surface of the middle concave portion, and is used to indicate the position of the sample in the pneumatic clamp to help the operator accurately adjust the position of the sample; the ruler includes scale lines and numbers, and indicates the distance in millimeters; The size of the middle recess of the ruler sleeve matches the size of the protruding portion of the clamp on the corresponding pneumatic clamp, so as to ensure that the ruler sleeve can fit tightly on the clamp during use and provide stable positioning.

2. A tool for calibrating and adjusting the centering of a pneumatic clamp sample for a tensile test as claimed in claim 1, characterized in that The length of the middle concave portion may be 28 to 32 mm, and the depth of the middle concave portion may be 15 to 18 mm.

3. A tool for calibrating and adjusting the centering of a pneumatic clamp sample for a tensile test as claimed in claim 1, characterized in that The total length of the ruler may be 26 to 30 mm.

4. A tool for calibrating and adjusting the centering of a pneumatic clamp sample for a tensile test as claimed in claim 1, characterized in that The scale of the ruler is set as follows: 0 in the middle, 13 to 15 scales on the left and right, and each scale is 1 mm.

5. A tool for calibrating and adjusting the centering of a pneumatic clamp sample for a tensile test as claimed in claim 1, characterized in that The lengths of the two sides of the two flat parts are both 36-40 mm, and the heights are both 25-40 mm.

6. A tool for calibrating and adjusting the centering of a pneumatic clamp sample for a tensile test as claimed in claim 1, characterized in that The thickness of the ruler set may be 5 to 8 mm.

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