Method and apparatus for manufacturing a wing spar profile element

摘要

The present invention relates to a method and an apparatus for manufacture of an elongated beam profile element (3) comprising a recess (15) provided for accommodating a support element (4), such as a power plant support. The method being performed by forming the blank (28) into the web portion (23) with at least one first protrusion (21) formed to extend across the web portion (23) and to protrude outward from the web portion's (23) outer surface (35); and into the first flange portion (17) with at least one second protrusion (19) formed to extend across the first flange portion (17) and to protrude inward from the first flange portion's (17) inner surface (37), wherein this second protrusion (19) merges into the first protrusion (21) and constitutes said recess (15)ffor accommodating the support element under the wing.