High precision microscopic fatigue tester

Abstract

The invention discloses a high-precision micro fatigue testing machine which comprises a test bed system, a servo motor control system and a machine visual system, wherein the servo motor control system is connected with a servo motor driver through a multifunctional data acquisition card, while the servo motor driver is connected with a servo motor which is connected with a speed reducer, and the speed reducer is connected with a leading screw in the test bed system, the leading screw is connected with a clamp through a sliding block, the sample in the clamp is connected with a polarizing microscope connecting with a vidicon which is used for monitoring display on the man-machine interface through an image acquisition card, the size of the micro-crack is measured by image processing software. The invention has the advantages of compact structure, simple operation, easy maintenance, high efficiency and energy saving.

Description

【Technical field】

[0001] The invention relates to the technical field of testing machines. Specifically, it is a high-precision micro-fatigue testing machine. 【Background technique】

[0002] With the development of computer technology and electromechanical technology, the deficiencies and limitations of micro-fatigue testing machines have become increasingly prominent, mainly reflected in several places: the structure of the power source system is complex, and the control accuracy is low; the image acquisition and control software is compiled based on the DOS system , not only the calculation and control response is slow, but also can not run on the WINDOWS platform; the accuracy and sensitivity of the force sensor is low. Specifically reflected in the following three aspects.

[0003] (1) Power system:

[0004] The loading system of the original micro-fatigue testing machine has a complex structure and a large footprint, and it is very inconvenient to adjust the load siz...

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