Defect detection device for mirror-like object and detection method thereof

Abstract

The invention relates to a mirror-like object defect detection device and a detection method thereof. The mirror-like object defect detection device comprises an optical detection system, an industrial personal computer, a trigger controller, a motion controller and a three-axis servo module, wherein the three-axis servo module can drive the optical detection system to scan a detected object under the action of the industrial personal computer and the motion controller, the trigger controller can be communicated with the three-axis servo module and the optical detection system, and the optical detection system is communicated with the industrial personal computer. The optical detection system is used for collecting and analyzing surface data of the mirror-like object and comprises a linear array camera, an LED stripe light source, a plurality of diffuse reflection light sources, a Y-direction distance measurement and chromatic aberration detection assembly and an X-direction distance measurement assembly, and the defect detection device for the mirror-like object and the detection method thereof are high in collection efficiency and imaging quality, compact in system structure and low in cost.

Description

Technical field: [0001] The invention relates to the technical fields of defect detection and machine vision, in particular to a defect detection device and a detection method for mirror-like objects. Background technique: [0002] With the rapid development of material science and technology, mirror and mirror-like materials are widely used on the surface of various products, such as automobile bodies, mobile phone casings, industrial bearing rollers, etc. [0003] Traditional manual visual inspection is increasingly difficult to meet the measurement and inspection requirements of the process due to low detection efficiency, unobjective detection standards, and being easily affected by subjective factors such as manual distraction and fatigue. The demand for mirror-like defect detection devices in various industries is increasing day by day. This kind of automatic device can not only strictly control product quality, but also conduct process traceability for product defects...

AI Technical Summary

Problems solved by technology

Monocular phase measurement deflectometry uses gray code or tri-frequency extrapolation and other unwrapping methods, which requires additional acquisition of more pictures, and the execution efficiency of hardware is low

Binocular phase measurement deflectometry, the introduction of a second camera to solve the problem of sagittal height uncertainty, the calculation and storage efficiency in the software is low

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