Electric unidirectional stress loading device

Abstract

The invention discloses an electric unidirectional stress loading device which comprises a deceleration stepping motor, a gear drive mechanism, a leading screw transmission mechanism, an, an inclined-plane loading slide block, a force measuring slide block, a bearing frame and a pressure sensor. The bearing frame is of a rectangular frame structure, and the inclined-plane loading slide block and the force measuring block are positioned in the two opposite sides of the bearing frame respectively, and are located on the bearing frame via chutes respectively; a sample is positioned in the middleof the bearing frame, and the two ends of the sample are fixed by sample clamps respectively; the pressure sensor is arranged in a cavity outside the force measuring slide block and the bearing frame;and the inclined-plane leading screw nut is arranged in a cavity outside the inclined-plane loading slide block and the bearing frame. The deceleration stepping motor loads a stress, the inclined-plane leading screw nut amplifies the load, the device is concise and compact in structure and simple in operation, the clamps and sample can be changed according to practical condition, and the processing precision of the inclined-plane loading slide block and the force measuring slide block is controlled so that the stretching load is satisfied in the unidirectional property. Thus, the electric unidirectional stress loading device is suitable for popularization and application.

Description

technical field [0001] The invention relates to the technical field of material engineering testing, in particular to an electric one-way stress loading device. Background technique [0002] When using X-ray stress analyzer, neutron diffraction device, etc. to measure the surface or internal stress of the sample, due to the analysis software and hardware of the instrument, it is easy to cause deviations between the measurement results and the actual stress value. At this time, the unidirectional stress loading and strain The measuring device calibrates the stress measurement instrument, which helps to optimize the software and hardware of the instrument and improve the measurement accuracy of the instrument. The calibration process is: apply a certain load to the sample, and at the same time use the strain gauge and X-ray stress analyzer or neutron diffraction device to test the strain of the sample, and compare the two to obtain the X-ray stress analyzer or neutron diffract...

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide an electric one-way stress loading device, which uses a motor for loading, which solves the problems that the loading speed and loading force cannot be accurately measured and the loading quality cannot be guaranteed in manual loading.

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