WELDING HEAD AND METHOD FOR JOINING A WORKPIECE

摘要

A method for joining a workpiece by means of a welding head, in which at least one line of light is generated on a workpiece, which crosses a joint line at a site to be joined and a joint seam generated at a joined site after processing. The lines of light are imaged at the site to be joined and at the joined site in order to generate reference data relating to the geometry of the site to be joined and measurement data relating to the geometry of the joined sites. The reference data and the measurement data are then compared at one and the same workpiece site before and after processing, in order to determine the geometry of the joint seam independently of the geometry of the site to be joined. t

主权项

1. A welding head for joining a workpiece, comprising:
a welding device which is adapted to weld a joint site of the workpiece to be processed inside a working region, a light section device which is attached to the welding device and has at least one light source for generating at least a first and a second line of light inside the working region on the workpiece, which crosses a joint line at a site to be joined and a joint seam generated at a joined site after processing by the welding device, at least one camera for observing the working region of the workpiece to be processed, which images the first line of light at the site to be joined and the second line of light at the joined site at regular time intervals, in order to generate reference data (DataR(t)) relating to the geometry of the site to be joined and measurement data (DataM(t)) relating to the geometry of the joined site with a joint seam, and a processing unit for receiving the reference data (DataR(t)) and measurement data (DataM(t)) from the at least one camera and for comparing the reference data (DataR(t)) and measurement data (DataM(t)) respectively at the same workpiece site before and after processing by the welding device, so that the geometry of the joint seam can be determined independently of the geometry of the site to be joined.