Surface leveling and fixing device for Vickers hardness test of cylindrical inlaid sample

Abstract

The invention discloses a surface leveling and fixing device for Vickers hardness testof a cylindrical inlaid sample. The device comprises a supporting module device and a fixing device, the supporting module device comprises a shell and a top cover, the top cover is arranged on the upper end face of the shell, and a first through hole is formed in the center of the top cover. The fixing device is arranged in the shell; the fixing device comprises a ball bull eye, a rotating disc, an internal thread connecting ring and a ball; the ball is arranged on the upper end surface of the ball bull eye; a second through hole is formed in the rotating disc; the ball bull eye is arranged on the rotating disc based on the second through hole; the ball bull eye comprises a first screw rod; and the internal thread connecting ring is arranged at the bottom of the shell. By arranging the supporting module and the fixing module, top covers with different central apertures can be replaced, the height can be adjusted through the rotating disc, the device can adapt to inlay bodies with different heights, balls on ball bull eyes can rotate, the test surfaces of the inlay bodies can be leveled in the test process, and the problem of experiment errors caused by inclination of the detection surfaces is effectively solved.

Description

technical field [0001] The invention relates to the technical field of hardness testing, in particular to a surface leveling and fixing device for a Vickers hardness testing surface of a cylindrical inlaid sample. Background technique [0002] When carrying out Vickers hardness test with small metal load, in order to ensure the accuracy of the indication, the indenter and the detection surface should be in a vertical state. For small-sized metal samples, it is usually necessary to heat / cold mount them with resinous substances, and then grind and polish them to make samples. The grinding process, especially the manual grinding, often leads to the inclination of the grinding surface of the sample due to unbalanced pressure. Direct measurement will increase the measurement error and seriously affect the accuracy of the detection data. For example, figure 2 As shown in the schematic diagram of the experimental effect of the existing device, the existing equipment cannot elimina...

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Problems solved by technology

The grinding process, especially the manual grinding, often leads to the inclination of the grinding surface of the sample due to unbalanced pressure. Direct measurement will increase the measurement error and seriously affect the accuracy of the detection data. For example, figure 2 The schematic diagram of the experimental effect of the existing device is shown. The existing equipment cannot eliminate the experimental error caused by the inclination of the sample detection surface, cannot guarantee the accuracy of the experiment, and cannot obtain effective experimental data.

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