Electric heating – Metal heating – For bonding with pressure
Patent
1992-05-13
1993-10-19
Shaw, Clifford C.
Electric heating
Metal heating
For bonding with pressure
B23J 1124
Patent
active
052548287
ABSTRACT:
Electrical resistance spot welding is controlled by stopping the welding current upon detection of indentation of the work pieces by the electrodes. Indentation is detected indirectly by monitoring the deformation on at least one arm supporting an electrode. The piston of the welding gun cylinder is prevented from displacing in direct proportion to displacements of the electrodes during formation of the weld so that the squeezing force applied by the electrodes to the work piece, and therefore the deformation in the electrode holders, varies as a function of electrode displacements.
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Monitoring and Control of Spot Weld Operations (SAE Technical Paper Series), SAE the Engineering Resource for Advanced Mobility, by A. Stiebel et al, Feb. 24-28, 1986.
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