SHEET-METAL COMPONENT WITH A LASER-WELDABLE THREE-EDGED CORNER, ASSOCIATED SHEET-METAL BLANK AND METHOD FOR PRODUCING AND OPTIMIZING THE SHEET-METAL BLANK

摘要

The invention relates to a bent sheet-metal component (10) with a three-edged corner (11), wherein two edges (12, 13) of the corner (11) are formed by a first and a second sheet-metal leg (2, 3) of a cut-to-size sheet-metal blank (1), which are respectively bent about an inner bending radius (Ri,1 Ri,2), and the third edge (14) of the three-edged corner (11) is formed by two cut-to-size edges (4, 5) of the two bent sheet-metal legs (2, 3), wherein the cut-to-size sheet-metal blank (1) has an interior corner (6) and a wedge-shaped clearance (7), which opens out into the interior corner (6) and is formed by two wedge legs (7a, 7b) and a rounded wedge tip (7c). The apex (8) of the two wedge legs (7a, 7b) lies at a distance u from the bending line (A) of the first sheet-metal leg (2) and at a distance x from the bending line (B) of the second sheet-metal leg (3). The first wedge leg (7a) is defined by the point of intersection (8) and a further point (9a) which is at a distance v from the bending line (A) and at a distance z from the bending line (B). The second wedge leg (7b) is defined by the point of intersection (8) and a further point (9b), which is at a distance T from the bending line (A) and a distance y from the bending line (B). The distances T, u, v, x, y, z are defined as: T = (0.7*S + VK/2) ± 20%, where (S) is the thickness of the metal sheet and (VK) is the shortening factor, u = (1.0* Ri,1) ± 20%, v = (1.0* Ri,1) ± 20%, x = (1.0* Ri,2) ± 20%, y = (0.25* Ri,2) ± 20%, and z = (VK/2 - 0.1) ± 20%.