Method and Device for Making a Workpiece Surface of a Metal Workpiece
AssigneeFronius International GmbH
InventorsManfred Schörghuber, Andreas Waldhör, Manuel Mayer
Life of this patent
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Abstract
Method and device for marking a workpiece surface (2A) of a metal workpiece (2), in which a welding torch (3) comprising a welding wire electrode (4) is guided along the workpiece surface (2A) to be marked and meanwhile a wire end (4A) of the welding wire electrode (4) is moved towards and away from the work-piece surface (2A) to be marked, wherein an electric voltage (U) present at the welding wire electrode (4) and/or an electric current (I) flowing through the welding wire electrode (4) bring about electric sparks, which bring about material removal and/or material alteration at the workpiece surface (2A) of the metal workpiece (2) to mark the workpiece surface (2A).
Claims20
A method for marking a workpiece surface of a metal workpiece, in which a welding torch comprising:
- guiding a welding wire electrode along the workpiece surface to be marked and while moving a wire end of the welding wire electrode towards and away from the workpiece surface to be marked;
- wherein an electric voltage present at the welding wire electrode and/or an electric current flowing through the welding wire electrode bring about electric sparks, which bring about material removal and/or material alteration at the workpiece surface of the metal workpiece to mark the workpiece surface;
- wherein the wire end of the welding wire electrode is repeatedly moved towards the workpiece surface until an electric short circuit with the metal workpiece occurs and subsequently moved away from the workpiece surface;
- and
- wherein an electric spark being produced each time the electric short circuit is interrupted to bring about material removal and/or material alteration in a point-based manner on the workpiece surface of the metal workpiece to generate one or more marking points, with no melting of the meltable fuse taking place.
A welding system comprising:
- a marking device for marking a workpiece surface of a metal workpiece];
- a welding torch, comprising a meltable welding wire electrode;
- a welding power source;
- and
- a control system configured and operable to guide the welding torch along the workpiece surface to be marked of the metal workpiece while moving a wire end of the meltable welding wire electrode, which protrudes from the welding torch, towards and away from the workpiece surface to be marked so as to produce electric sparks;
- wherein the control system is further configured and operable to;
- generate electric sparks, in a marking mode of operation of the welding system:
- to control the welding power source to adjust the electric voltage present at the welding wire electrode and/or to adjust the electric current flowing through the welding wire electrode, and
- to control a movement profile and/or movement frequency of the wire end, in such a way that the wire end is repeatedly moved towards the workpiece surface until an electric short circuit with the metal workpiece occurs and subsequent moved away from the workpiece surface, an electric spark being produced each time the electric short circuit is interrupted and bringing about material removal and/or material alteration in a point-based manner on the workpiece surface of the metal workpiece to generate a marking point, with no melting of the meltable fuse taking place.
Dependencies are inferred from the claim text.