Method for monitoring a welding machine, method for regulating t

Details Method for monitoring a welding machine, method for regulating t Method for monitoring a welding machine, method for regulating t

1996-05-13

1998-04-21

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

219110, B23K 1125

Patent

active

057420238

ABSTRACT:
A welding machine produces a spot-welded joint between two components to be welded together by at least one electrode being in contact with one of the components, by passing a welding current through the components during a welding period, and measuring a thermo-electrical voltage between the electrode and the components outside the welding period. A method for monitoring the welding machine on the basis of the thermo-electrical voltage includes determining a monitoring variable from the thermo-electrical voltage and comparing the monitoring variable with a reference variable of the welding machine. The method can be used for regulating a welding machine, especially for producing a plurality of spot-welded joints. A device for carrying out the method includes at least one measuring instrument, in particular a voltage meter, disposed between the components to be welded together and the electrode. An evaluation and regulating device is connected downstream of said measuring instrument.

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