Patent ID: 8001688
Filing Date: 2011-08-23
Classification: B23K,Y10T

Abstract:
1. A method for producing attached parts for a motor vehicle, including one or more of doors, dampers, mudguards, the method comprising: providing an internal sheet and at least one external sheet with said sheets being produced separately from each other, said internal sheet having an outer surface; bending the external sheet inwardly by up to 90° at sides visible from a position outside of said at least one external sheet in the edge area of an attached part to form a bent external sheet portion, said bent external sheet portion having an inner surface; pushing pertaining edge areas of the internal sheet, in a direction of said inner surface of said bent external sheet portion, against the bent external sheet portion of the at least one external sheet to minimize a gap defined between edge areas of said internal sheet and said bent external sheet portion of said external sheet, said internal sheet being moved relative to said external sheet, in said direction of said inner surface of said bent external sheet portion, to move at least a portion of said outer surface of said internal sheet into contact with at least a portion of said inner surface of said bent external sheet portion; welding the internal sheet and the external sheet together by a laser beam directed into the gap between the edge areas of the internal sheet and the bend of the external sheet; laying an open end of the external sheet and an open end of the internal sheet on each other in parallel to a component plane at one side at least or at all invisible sides in the edge area of the attached part lying opposite to the visible area(s), wherein said open end of the external sheet and said open end of the internal sheet extend in a direction parallel to the component plane, said open end of said external sheet having an inner external sheet surface, said open end of said internal sheet having an inner internal sheet surface, said inner external sheet surface engaging said inner internal sheet surface, wherein said inner internal sheet surface moves along said inner external sheet surface when said internal sheet is moved relative to said external sheet; and laser-welding in an overlap joint of the open end of the external sheet and the open end of the internal sheet or laser-welded or laser-soldered in a fillet of the overlapping parallel edges of said open end of the external sheet and said open end of said internal sheet after said internal sheet is moved relative to said external sheet.