Worm wheel- worm lead screw transmission type two-way stretch test machine

Abstract

The invention discloses a worm wheel-worm lead screw transmission type two-way stretch test machine, which is characterized by consisting of a rack, a loading power module, a sensor module and a clamping module, wherein the entire loading power module is fixedly arranged on the rack, two clamping heads of the clamping module penetrate through two stretch movement blocks of the loading power module respectively, and a dynamometer and a displacement sensor in the sensor module are also fixed on the loading power module; and after a test sample is fixed on the clamping heads, a motor in the loading power module rotates to drive a worm wheel and a worm, the worm wheel drives two reversed screw-thread ball screws respectively to further drive the two stretch movement blocks to move in opposite directions so as to achieve stretch or compression of the test sample, and stress values and displacement amounts of the test sample during stretching are acquired respectively by virtue of the dynamometer and the displacement sensor in the sensor module. The two-way stretch test machine disclosed by the invention can achieve stretch of small-size samples of a material, thereby assisting research of mechanical properties of a micro-nano structure of the material.

Description

technical field [0001] The invention is suitable for testing the mechanical properties of metal and non-metal materials, and specifically relates to a worm gear and worm screw drive type bidirectional tensile testing machine. Background technique [0002] Tensile testing machine is widely used in various metals, non-metals, composite materials, medicine, food, wood, copper, aluminum, plastic profiles, wire and cable, paper, film, rubber, textile, aerospace and other industries for tensile testing The test of performance indicators, especially at the current stage where various new materials and new processes are emerging one after another, and the processing size of various devices is becoming more and more miniaturized, it is particularly important for the test of the mechanical properties of the micro-nano structure of materials, because the test sample is only In the order of millimeters, the yield force and deformation of the sample are very small. During the stretching ...

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Problems solved by technology

[0002] Tensile testing machine is widely used in various metals, non-metals, composite materials, medicine, food, wood, copper, aluminum, plastic profiles, wire and cable, paper, film, rubber, textile, aerospace and other industries for tensile testing The test of performance indicators, especially at the current stage where various new materials and new processes are emerging one after another, and the processing size of various devices is becoming more and more miniaturized, it is particularly important for the test of the mechanical properties of the micro-nano structure of materials, because the test sample is only In the order of millimeters, the yield force and deformation of the sample are very small. During the stretching process of the sample, it is necessary to ensure that the sample does not undergo torsion deformation and the force is uniform during the stretching process. The domestic tensile testing machine is unidirectional tensile and the tensile speed Larger, unable to complete the mechanical performance test of the fine scale

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