Low-temperature mechanical test method with automatic sample exchange

Abstract

The invention discloses a low-temperature mechanical test method for automatically changing sample pieces. At present, in most low-temperature mechanical tests, every time a sample is changed, the door of the incubator needs to be opened to change when the room temperature is almost the same, which increases the test time. The low-temperature mechanical test device for automatically exchanging samples adopted in the present invention uses parallel grippers to grab the samples, the translation drive device realizes the expansion and contraction of the parallel grippers, the linear driver realizes the lifting of the parallel grippers, and the rotary drive device realizes the parallel grippers The rotation; the control system controls the movement of the parallel gripper, the translational drive, the linear drive and the rotary drive, as well as data transmission. Steps of the present invention: first input the size parameters of the sample into the control system, place the sample on the sample pre-cooling rack and pre-cool it together with the low-temperature test box, and when the temperature reaches the set value, execute through the control system "Load" and "Unload" actions. The invention does not need to open the low-temperature test box, that is, the sample sample can be changed automatically.

Description

technical field [0001] The invention belongs to the technical field of low-temperature mechanical tests, and in particular relates to a low-temperature mechanical test method for automatically changing sample pieces, mainly aimed at small- and medium-span temperature-difference mechanical tests. Background technique [0002] In order to test the mechanical properties of materials in low-temperature environments, the combination mode of mechanical testing machine and low-temperature box is usually used to obtain the mechanical properties of materials at very high temperatures. However, the realization of low-temperature environments with small and medium spans mostly uses compressor refrigeration, and refrigeration is relatively Slow, if you need to open the low-temperature test chamber to change the sample, the cold air in the low-temperature test chamber will be lost, resulting in a long test preparation time and a waste of manpower and other resources. Contents of the inv...

AI Technical Summary

Problems solved by technology

[0002] In order to test the mechanical properties of materials in low-temperature environments, the combination mode of mechanical testing machine and low-temperature box is usually used to obtain the mechanical properties of materials at very high temperatures. However, the realization of low-temperature environments with small and medium spans mostly uses compressor refrigeration, and refrigeration is relatively Slow, if you need to open the low-temperature test chamber to change the sample, the cold air in the low-temperature test chamber will be lost, resulting in a long test preparation time and a waste of manpower and other resources

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