Multi-axis tensile testing machine and testing method

Abstract

The invention discloses a multi-axis tensile testing machine and testing method. The mechanical structure comprises a motor, a coupler, a guide rail, a rotating disc, a connecting rod, a sliding block, a supporting plate, a clamp and the like. The motor is connected with the rotating disc through the coupler, and the rotary motion of the rotating disc is converted into the linear motion of the slide block driving the clamp through the connecting rod, so that a tested sample is driven to realize periodic stretching. According to the testing machine, synchronous stretching of the sample at different frequencies is realized by utilizing a crank-link mechanism. The stretching ratio can be flexibly adjusted by adjusting the relative position of a key groove in the rotating disc and the threaded hole in the connecting rod, and the stretching ratio is matched with the size of a sample. The multi-axis tensile testing machine has the advantages of large tensile deformation, easy adjustment of the tensile range, simple structure, convenience in installation, low manufacturing cost and the like.

Description

Technical field [0001] Technical Field The present invention belongs to the mechanical and electrical, to a multi-axis tensile testing machine and test method for testing. Background technique [0002] In the field of electromechanical technology, often require a large deformation of the material, so that a better measure certain properties of the material. [0003] In the prior art, most of the tensile machine testing laboratory uniaxial form, this form tensile deformation is not big enough, and slow, often can not meet the needs of large-scale experiments and high tensile variable frequency. And some form of biaxially stretching test using the test machine is substantially in the form of a ball screw drive, which form a transmission high friction, high consumption of mechanical energy, poor stability, is not conducive to a tensile test material. While multi-axis tensile testing machine test complicated structure, many components, installation is more complicated, higher manufac...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, most of the tensile testing machines for materials are in the uniaxial form. The deformation of this tensile form is not large enough, and the speed is slow, which often cannot meet the experimental requirements of large variables and high tensile frequencies.

However, some biaxial tensile testing machines basically adopt the transmission form of ball screw, which has high friction, high mechanical energy consumption and poor stability, which is not conducive to tensile testing of materials.

However, some multi-axis tensile testing machines have complex structures, numerous parts, complicated installation, high manufacturing costs, and non-adjustable tensile range.

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