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Method for monitoring a welding machine, method for regulating the welding machine and device for carrying out the method

  • US 5,742,023 A
  • Filed: 05/13/1996
  • Issued: 04/21/1998
  • Est. Priority Date: 11/11/1993
  • Status: Expired due to Fees
First Claim
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1. In a method for monitoring a welding machine for producing a spot-welded joint between two components to be welded together by at least one electrode being in contact with one of the components, which comprises:

  • 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,monitoring functional capability of the welding machine on the basis of the thermo-electrical voltage, by determining a monitoring variable from the thermo-electrical voltage and comparing the monitoring variable with a reference variable of the welding machine.

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