Method for welding a sphere onto a metal sheet by a welding current between electrodes

摘要

A method is provided for welding in an automated way a sphere onto a metal sheet. The method includes the following steps: providing a sphere; providing a first electrode; picking up the sphere by use of the first electrode; providing a metal sheet; providing a second electrode; pressing the metal sheet and sphere together such that the sphere is pressed against the metal sheet by the first electrode, and the metal sheet is pressed against the sphere by the second electrode; and welding the sphere and the metal sheet together by generating a welding current between the two electrodes.

主权项

1. A method for welding a sphere onto a metal sheet, the method comprising the acts of:
picking up the sphere by use of a first electrode; pressing a metal sheet and the sphere together, wherein the sphere is pressed against the metal sheet by the first electrode and the metal sheet is pressed against the sphere by a second electrode; and generating a welding current between the first and second electrodes to weld the sphere and the metal sheet together, wherein:
the first electrode comprises a face-side having a recess, an act of applying suction to the sphere being carried out such that upon being sucked into the recess a portion of the sphere that is to be welded protrudes from the recess and another portion of the sphere within the recess contacts an inner side of the recess only linearly about a circular periphery of the sphere so as to position the sphere in a defined manner, andthe act of generating the welding current produces a point weld between the sphere and the metal sheet such that the sphere substantially maintains a spherical shape suitable for use as a joining element of a joint.