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Multifunctional material test clamp based on lever principle

A technology of material testing and lever principle, which is applied in the direction of analyzing materials, measuring devices, instruments, etc., can solve the problems of fixtures that are easy to rust, and achieve the effect of preventing the sample from slipping, the fixture structure is compact, and it is easy to use

Inactive Publication Date: 2014-04-09
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of fixture is prone to rust when performing high humidity tests

Method used

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  • Multifunctional material test clamp based on lever principle
  • Multifunctional material test clamp based on lever principle
  • Multifunctional material test clamp based on lever principle

Examples

Experimental program
Comparison scheme
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specific Embodiment approach

[0031] Such as image 3 As shown, a pair of fixtures of the present invention are used to clamp the sample and place it in an environmental chamber, and connect to the MTS material testing machine through an adapter flange 300 . When loading the sample, first adjust the centering bolt 116 according to the thickness of the sample so that the center of the sample coincides with the center of the fixture, then lightly tighten the pre-tightening bolt 114 to make the clamp close to the sample, and finally tighten the compression nut with a wrench 217 to obtain a suitable clamping force. After the test is finished, loosen the booster nut 217 with a wrench to loosen the clamp and take out the sample.

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Abstract

The invention relates to a multifunctional material test clamp based on a lever principle. The multifunctional material test clamp comprises a main box (400), a sample clamping mechanism (100), a clamping force adjustment mechanism (200) and a switching flange (300), wherein the sample clamping mechanism (100) and the clamping force adjustment mechanism (200) are arranged on two inner sides of the main box (400) separately; the switching flange (300) is connected to the main box to be linked with a main shaft of a tester; the clamping force adjustment mechanism transfers force on a spring to a clamping block through a lever warping plate (204). The multifunctional material test clamp can be used for discriminating the magnitude of clamping force, is suitable for clamping of different types of materials by virtue of an enough clamping force adjusting range, and can be conveniently used in a warm humid environment box. The clamping force of the test clamp cannot be quickly decreased due to micro-deformation of a sample, and thus the phenomenon of slippage of the sample in the test process can be effectively prevented. The multifunctional material test clamp is applied to different types of samples, is used for single-axis or multi-axis pulling-pressing circulation tests, torsion tests and relaxation tests, and has the advantages of simple structure, complete functions, convenience in processing, economy, practicality and the like.

Description

technical field [0001] The invention belongs to the related field of clamps for clamping samples of material testing machines. Background technique [0002] In order to consider the mechanical properties of materials under different temperature and humidity environments, it is usually necessary to place material samples in a closed environment box that can adjust temperature and humidity for testing. Such a test environment must find a new type of fixture that is different from conventional tests, that is, a fixture with a compact structure and multiple functions is required. Usually, the test at room temperature generally adopts the hydraulic fixture that comes with the testing machine. The hydraulic fixture has the advantages of good centering and adjustable pressure. in a closed temperature-humidity chamber. Even if the hydraulic fixture can be placed in the environmental chamber, due to its large volume, it will affect the convection of the air in the environmental cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/04
Inventor 卢福聪康国政张建伟蒋晗刘宇杰
Owner SOUTHWEST JIAOTONG UNIV
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