Method for manually adjusting clamping distance tested by tension tester

Abstract

The invention provides a method for manually adjusting clamping distance tested by a tension tester and belongs to the field of analysis materials for measuring physical properties. According to the method, the same testing clamping distance can be used in the same substance or same test as much as possible, particularly when materials with low tensile strength are detected, the phenomenon that the accuracy of the testing result is greatly influenced due to the manufacturing deviation of the material sample is eliminated; and meanwhile, the defects that generally the manually adjusted testing clamping distance is large in error and the accuracy is not high enough are overcome. According to the method, an elastic object with determined length participate in the clamping distance adjustment, and the distance of the spacing elastic object in the equipment is actually adjusted from zero, so that the distance of the clamp is only required to be adjusted to subtract the required length from the length of the elastic object, the two clamps are effectively prevented from being contacted, the two clamps are prevented from contacting sharp and hard substances, the sensor is prevented from being damaged, and the service life of the equipment is prolonged.

Description

technical field [0001] The invention belongs to the field of analyzing materials by measuring physical properties, and in particular relates to a manual calibration and adjustment method of a tensile testing machine. Background technique [0002] The tensile testing machine is mainly used for tensile compression deformation tests of plastic sheets, paper, pipes, profiles, wires and cables, metal wires, etc., and can be used to determine their tensile strength, tensile strength and elongation rate and other indicators. The test clamp distance is the distance between the two clamps of the tensile testing machine, which is an important link in the tensile test and affects the accuracy of the test. [0003] In the prior art, when testing materials with high tensile strength, the fixture and the sample are usually installed according to the length of the material sample. First, the material sample is installed on the fixture, and then the upper and lower fixtures It is equipped ...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems in the background technology, the purpose of the present invention is to provide a manual adjustment method for the test clamp distance of a tensile testing machine, which can ensure that the same material or the same test uses the same test clamp distance as much as possible, especially When testing some materials with low tensile strength, it can eliminate the problem of low accuracy of the test results caused by the deviation of the material sample, and also solve the problem that the manual adjustment of the test clamp distance of the general tensile testing machine is too large and accurate. not enough defect

Images