Open shoulder center positioning device for plate tensile sample

Abstract

The invention discloses an open shoulder center positioning device for a plate tensile sample. The device comprises a workbench, a transverse sliding mechanism, a vertical sliding mechanism, a first laser distance measuring sensor and a length meter set, wherein the transverse sliding mechanism, the vertical sliding mechanism and the first laser distance measuring sensor are fixed to the workbench, and the plate tensile sample is fixed to the transverse sliding mechanism; the first laser distance measuring sensor is aligned with the side wall of the plate tensile sample so as to identify the starting point and the terminal point of the open shoulder position on the side wall of the plate tensile sample; and the length meter set is fixed to the vertical sliding mechanism and comprises fourlength meters arranged in a cross shape, and probes of the four length meters face the same point. The device has the advantages that follow-up measurement in the open shoulder length direction is achieved, the measurement stability in the open shoulder length direction is improved, the influence of pits on laser ranging is reduced, and false detection and inaccurate detection are avoided.

Description

technical field [0001] The invention relates to a shoulder-opening center positioning device, in particular to a shoulder-opening center positioning device for plate tensile samples, and belongs to the technical field of metallurgical manufacturing. Background technique [0002] In the sheet tensile laboratory, in order to meet the experimental needs, it is necessary to give priority to finding the center position of the open shoulder of the sheet tensile sample, that is, the length center, height center and width center of the open shoulder, so that the tensile machine can perform the tensile test , the jaws at both ends can be stretched symmetrically. [0003] Existing methods for centering the open shoulder of sheet tensile samples are relatively scarce, and most of them rely on laser sensors, that is, through laser sensors installed in various directions, the laser points are respectively placed on each position of the sheet tensile sample , so as to realize the distanc...

AI Technical Summary

Problems solved by technology

[0004] However, due to the processing accuracy of the plate, various pits of different sizes will appear on the surface of the sample. As a result, when the laser sensor detects the sample, it is easily affected by the pits and causes false detection and inaccurate detection, which leads to the failure of the system The center positioning of the open shoulder was successfully completed, the failure rate was increased, and the degree of automation was reduced

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