Patent ID: 8053698
Filing Date: 2011-11-08
Classification: B23K

Abstract:
1. A method for attaching together upper and lower metal workpieces with an adhesive comprising; dispensing the adhesive on the lower metal workpiece, placing the upper metal workpiece atop the lower metal workpiece; applying weld electrodes to the upper and lower metal workpieces and passing a current between the weld electrodes to make a series of electric resistance welds at predetermined spaced locations along the upper and lower metal workpieces; measuring a depth of indentation of each of the series of electric resistance welds at the predetermined spaced locations by measuring an advance of the weld electrodes and comparing the measured depth of indentation with a known depth of indentation that is known to occur when there is a presence of the adhesive between the upper and lower metal workpieces; and, in the event of finding at least one of the series of electric resistance welds has been made without the presence of the adhesive, relocating the weld electrodes and advancing the electrodes to make at least one supplemental electric resistance weld in addition to the series of electric resistance welds made at the predetermined spaced locations.