APPARATUS AND METHOD FOR QUALITY JUDGE OF WELDING

摘要

PURPOSE: A checking device for welding quality and a checking method thereof are provided to accurately check the welding quality by deciding if a welding is bad when the number of trouble is more than a specific ratio. CONSTITUTION: In a welding quality checking method, a system presets the allowable range and the reference value of brightness, an overheat generating position weight, the brightness intensity of one overheat generation, the generating length of allowable overheat, the generating area of allowable overheat and the generating number of allowable overheat. Then, the system compares a difference between electric signals of the preset reference value and brightness measured by a brightness sensor, with an allowable range. When the difference is over the allowable range, the generating number of overheat and the generating length of overheat are accumulated and the brightness intensity of overheat and the generating area of overheat are calculated. When the calculated generating area of overheat is larger than the preset generating area and the calculated generating number of allowable overheat is more than the preset generating number, the system finally decides that a welding is bad.