A quality evaluation system and its method of laser welding

摘要

The laser welding quality evaluation system of the present invention includes: a laser generating unit for generating a laser to weld a plurality of metals; a scanner that receives the laser generated by the laser generator and creates a laser beam and scans the portion including the interface between the plurality of metals; a CCD or CMOS camera for photographing a welded portion by a laser beam that is scanned on the interface of the plurality of metals from the scanner; a color information detection unit that divides the photographed image into a plurality of blocks and detects an RGB pattern and a brightness pattern from the images located in the plurality of blocks; a memory for storing a plurality of RGB reference patterns and a plurality of brightness reference patterns corresponding to welding defects; and a laser welding machine controller that determines whether welding is good or bad by judging whether the RGB pattern and brightness pattern detected by the color information detection unit are among a plurality of RGB reference patterns and a plurality of brightness reference patterns corresponding to welding defects stored in the memory. includes