Abstract: A method for actuating an AC/DC voltage converter is specified, which has a DC voltage output between which at least one series circuit of at least two capacitors and at least one series circuit of n switching elements-is arranged, where n?4. A connecting point of the switching elements is connected to a connection of an AC voltage input between n/2 switching elements. Two diodes are connected in an antiparallel arrangement to the two switching elements lying closest to the connecting point. In addition, a connecting point of the capacitors is connected to a connecting point of the diodes. An output voltage at the DC voltage output and a potential of the connecting point of the capacitors or diodes are provided as controlled variables, an input current at the AC voltage input is provided as a manipulated variable and the switching elements are provided as an actuating element of a control loop.

Abstract: A method for controlling a welder including a fusible electrode stores the values of the welding parameters required for a welding process in a storage device and saves the values as so-called characteristic curves through at least one support point per characteristic curve. A working point is set by a value for the heat input into a workpiece and a value for the wire feed speed. Upon adjustment of any of the values to a welding application the other value is kept constant by a calculation method designed such that a plurality of characteristic curves that are compatible with one another are combined to form a characteristic curve field per welding process and the welding parameters of all support points of the characteristic curves of the characteristic curve field are saved according to defined values of specific welding parameters.

Abstract: A collision protection device for connecting a welding torch connected to a hose pack to a robot arm of a welding robot, comprising two coupling elements that is adapted to be detachably connected to each other by means of magnets, wherein one coupling element is designed to be connected to the welding torch or to a torch coupling that is adapted to be connected to the welding torch, and the other coupling element is designed to be connected to the robot arm, and the coupling elements have openings. The openings in the coupling elements are designed for feeding the hose pack through, and the coupling element that is adapted to be connected to the welding torch or to the torch coupling, or the torch coupling comprises elements to be connected to the hose pack.

Abstract: A method for actuating an AC/DC voltage transformer is specified, which has a DC voltage output between which at least one series circuit of at least two capacitors and at least one series circuit of n switching elements is arranged, where n?4. A connecting point of the switching elements is connected to a connection of an AC voltage input between n/2 switching elements. Two diodes are connected in an antiparallel arrangement to the two switching elements lying closest to the connecting point. In addition, a connecting point of the capacitors is connected to a connecting point of the diodes. An output voltage at the DC voltage output and a potential of the connecting point of the capacitors or diodes are provided as controlled variables, an input current at the AC voltage input is provided as a manipulated variable and the switching elements are provided as an actuating element of a control loop.

Abstract: The invention relates to a welding method for implementing and monitoring a welding process, whereby a power source (2) and a feeding device (10) for the welding rod (11) are controlled by means of a control device (4), and whereby at least one control variable is measured or calculated from characteristic variables of the arc during the welding process.

Abstract: The invention relates to a collision protection device (1) for connecting a welding torch (2) connected to a hose pack (4) to a robot arm (3) of a welding robot, comprising two coupling elements (6, 7) that is adapted to be detachably connected to each other by means of magnets (8), wherein one coupling element (6) is designed to be connected to the welding torch (2) or to a torch coupling (5) that is adapted to be connected to the welding torch (2), and the other coupling element (7) is designed to be connected to the robot arm (3), and the coupling elements (6, 7) have openings (10, 11), characterized in that the openings (10, 11) in the coupling elements (6, 7) are designed for feeding the hose pack (4) through, and that the coupling element (6) that is adapted to be connected to the welding torch (2) or to the torch coupling (5), or the torch coupling (5) comprises elements (15) to be connected to the hose pack (4).

Abstract: The invention relates to a method of manufacturing a structure (1) at a surface of a work piece (4), the structure (1) standing out from the surface, wherein a welding process (7) with an at least partially fusing filler material (2) is used, wherein an arc (3) is ignited during a welding cycle (8) of the welding process (7) between the filler material (2) guided in a welding torch (5) and the work piece (4), and wherein the heat input during the welding process (7) is adjusted by controlling the welding parameters. In accordance with the invention it is provided that the structure (1) is manufactured step by step from a plurality of individual elements (6), wherein each individual element (6) is manufactured in one welding cycle (8) of the welding process (7), and wherein a welding break (9) is made after each welding cycle (8).

Abstract: The invention relates to a method for controlling a welder comprising a fusible electrode, wherein the values of the welding parameters required for a welding process are stored in a storage device and are saved as so-called characteristic curves (1) through at least one support point (2) per characteristic curve (1). In order to create such a method, it is proposed that a working point (3) be set by a value for the heat input (Pw) into a workpiece and a value for the wire feed speed (vd), wherein upon adjustment of any of said values to a welding application the other value is kept constant by a calculation method, and the calculation method is designed such that a plurality of characteristic curves (1) that are compatible with one another are combined to form a characteristic curve field (4) per welding process and the welding parameters of all support points (2) of the characteristic curves (1) of the characteristic curve field (4) are saved according to defined values of specific welding parameters.

Abstract: The invention relates to a welding method for implementing and monitoring a welding process, whereby a power source (2) and a feeding device (10) for the welding rod (11) are controlled by means of a control device (4), and whereby at least one control variable is measured or calculated from characteristic variables of the arc during the welding process.