Dual camera Brinell hardness measuring device and method based on machine vision

Abstract

The invention belongs to the field of Brinell hardness measurement, and particularly relates to a dual camera Brinell hardness measuring device and method based on a machine vision method. The devicecomprises a base provided with a workbench, wherein a horizontal X-direction drive device and a horizontal Y-direction drive device are mounted on the workbench, a large-field camera and a small-fieldcamera are mounted above the workbench, and the large-field camera and the small-field camera are fixed on a vertical direction drive device. The invention greatly reduces the influence of human intervention measurement. After the standard hardness block is pressed by the press, the large-field camera automatically recognizes and locates the new indentation, and then the small-field camera is used to carry out circle fitting on the indentation, thereby converting to Brinell hardness.

Description

technical field [0001] The invention belongs to the field of Brinell hardness measurement, in particular to a dual-camera Brinell hardness measurement device and a measurement method based on a machine vision method. Background technique [0002] The mechanical properties of materials are of great significance to the design and processing of various machinery and construction projects. For various mechanical parts or building components, certain characteristics are required. "Hardness" does not represent a definite physical quantity. At present, no method of measuring hardness has been found to have a definite relationship with a certain physical property. Hardness testing is used in daily production and scientific research, especially in the field of mechanical manufacturing and materials. It has been widely used in scientific research. Hardness reflects the mechanical properties of materials to a certain extent, and plays a decisive role in various mechanical design and p...

AI Technical Summary

Problems solved by technology

[0003] At present, in most parts of our country, the measurement of Brinell hardness is still carried out manually with the help of traditional optical microscope. First, the sample is polished and polished with a hand-held grinder, and then a steel ball of a certain specification is pressed into the surface of the sample. Then the operator uses an optical microscope to measure the diameter of the readout indentation. This measurement method not only has a large error and is greatly affected by human factors, but also has an extreme degree of automation, and the measurement efficiency and accuracy are not high.

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