Tensile sample clamping vertical calibration device and calibration method thereof

Abstract

The invention provides a tensile sample clamping vertical calibration device applied to the technical field of tensile experiment equipment. The upper end of a support part (2) of the tensile sample clamping vertical calibration device is movably connected with a projection lamp (1), the lower end of the support part (2) is connected with a base part (3), and a magnetic force adjusting knob (302)is arranged on the base part (3). A projection curtain component (4) comprises a curtain shell (401), a curtain body (402) is installed on the curtain shell (401), and a vertical calibration line (403) is arranged on the curtain body (402). The tensile sample clamping and vertical calibration device is low in cost and simple in structure, is easy and convenient to operate and convenient to maintain, is capable of conducting vertical calibration on a tensile sample conveniently and reliably, ensures that the tensile sample is placed in a vertical state at the beginning of a test, avoids errorsof a test result caused by inclined placement of the sample, and improves the accuracy of the tensile test result and the convenience of the test process.

Description

technical field [0001] The invention belongs to the technical field of tensile test equipment, and more specifically relates to a vertical calibration device for clamping a tensile sample. Background technique [0002] The tensile test of materials is the most basic and widely used test method in the mechanical performance test of materials. The tensile test of materials has important application value and reference value in the development of new materials, material procurement and acceptance, product quality control, equipment safety assessment, etc. In some occasions, the tensile test can even be directly The results serve as the criteria for judging. At present, the tensile fixtures used in most tensile testing machines are wedge-shaped fixtures. When performing tensile tests on circular cross-section tensile specimens, special V-shaped clamps are used to ensure the clamping of the tensile specimens. The holding end just snaps into the V-shaped groove of the V-shaped c...

AI Technical Summary

Problems solved by technology

When tensile specimens such as rectangular cross-section specimens and longitudinal arc specimens are placed obliquely, they will be subjected to eccentric forces, which will cause additional bending stress on the specimens, causing the specimens to be subjected to horizontal force components. , the measured value of the test force is smaller than the actual value, which eventually leads to a smaller strength of the measured material, and the larger the included angle, the larger the deviation

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