Fronius International Gmbh

Bernhard Moertendorfer

Helmut Ennsbrunner

Manfred Schoerghuber

Daniel Angermayr

A method for automatically determining optimum welding parameters for carrying out a weld on a workpiece carries out test welds on test workpieces along test welding tracks, and at each test weld a welding parameter is changed automatically along the test welding track from a predefined initial value to a predefined final value. Each resulting test weld seam is measured along the test welding track with a sensor, and a sensor signal is received. A quality parameter characterizing each test weld seam is calculated from the sensor signal. A quality function for characterizing the test weld seam quality in accordance with the changed weld parameters is calculated from the quality parameter. An optimum quality function is ascertained, and the values for the optimum welding parameters are defined based on each quality parameter at this quality function optimum and the corresponding test weld track locations and saved.

Method for automatically determining optimum welding parameters for carrying out a weld on a workpiece

A method for establishing welding parameters for a welding process guides a welding torch along a predetermined welding path over the workpiece to be worked and sets welding parameters based on the respective path position for workpiece working. Before establishing the parameters, ideal parameters are determined by test welding processes on test workpieces along test welding paths, with a respective specific test workpiece position and arrangement relative to the gravitational acceleration vector and a specific tangential vector of the test path, and are stored. The parameters at the respective path position are established based on workpiece position and arrangement at the time relative to the welding path gravitational acceleration vector and tangential vector at the time by interpolation of the stored ideal parameter values for the determined positions and arrangements of the test workpieces relative to the gravitational acceleration vector and the specific tangential vectors of the test paths.

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Pettenbach, Austria

Bernhard Moertendorfer