Weld thickness monitoring in resistance welding apparatus

Details Weld thickness monitoring in resistance welding apparatus Weld thickness monitoring in resistance welding apparatus

1987-05-27

1988-11-29

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

219 82, B23K 1124

Patent

active

047884053

ABSTRACT:
Apparatus, for measuring the thickness of a welding seam produced by resistance welding between a resiliently mounted upper roll and a lower roll, comprises a source of light mounted laterally of the resiliently mounted roll and a light collector mounted to receive such light as is not eclipsed by the periphery of the roll so that variation in the amount of light received as the roll periphery interrupts the light is indicative of weld thickness. The light received is preferably converted by means to an electrical signal which is analyzed to discern the quality of the weld.

REFERENCES:
patent: 2332289 (1943-10-01), Zeitlin
patent: 4376883 (1983-03-01), Dao et al.
patent: 4548503 (1985-10-01), Liesch et al.
patent: 4628175 (1986-12-01), Nissl

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