Newfrey Lcc

Emhart Inc.

Wolfgang Obermann

Klaus Gisbert Schmitt

Michael Krengel

Manfred Müller

Wolfgang Schmidt

Harald Knetsch

Klaus Gisbert-Schmitt

A joining method head is proposed for fixation to a movable frame, in particular to a robot, having a holding means for an element to be joined to a part, a joining drive means to move the holding means along a joining direction for joining, and a feeding means for feeding elements to the joining method head. Here a control means to control the joining drive means is arranged at the joining method head spatially distanced from the holding means and the joining drive means, so that the holding means and the joining drive means form a joining tool of small dimensions, and means are provided to pass on the elements fed to a transfer station of the feeding means in each instance to the holding means from in front.

Joining system head, joining system, and method of feeding and joining elements

A joining system head () is proposed for fixation to a movable frame (), in particular to a robot (), having

Process for welding a weld stud onto a workpiece by means of a drawn arc, in which the weld stud is placed onto the workpiece and, with performance of a welding stroke, is removed from the workpiece in a return stroke, igniting a pilot arc, and is advanced toward the workpiece again in a forward stroke during the combustion of a connected welding arc. The welding arc is divided by pulse-wise current reduction to a minimum value into a sequence of current pulses and the last of these current pulses is extended in time by at least about 1.5 times relative to the preceding current pulses. This extended current pulse lasts substantially to the end of the forward stroke.

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Grünberg, Germany

Wolfgang Obermann