JOINT QUALITY INSPECTION APPARATUS AND JOINT QUALITY INSPECTION METHOD

摘要

A joint quality examining device and method for accurately examining in real time the qualities of the joints of all the products where joining members are joined to members to be joined. A joining device includes an ampere meter, a frequency meter, an encoder, and a recording unit the four for detected the joining waveform produced in a joining process, a feature point extracting unit for extracting from the deleted joining waveform a feature point related to an after-endurance physical quantity usable for evaluation of the quality which the joint is required to have after an endurance test, a calculating formula setting unit storing the calculation formula for calculating the after-endurance physical quantity, a calculating unit for calculating the after-endurance physical quantity of the joint from the feature point extracted by using the calculation formula, and a judging unit for judging whether or not the joint quality of the joint is acceptable on the basis of the comparison of the calculated after-endurance physical quantity and a predetermined threshold.