Method and apparatus for shaping a section bar made of composite material and shaped I-shaped stringer

摘要

A method and apparatus for shaping a section bar (for example, a "T-shaped" or "J-shaped" stringer) made of composite material is provided. The method comprising the steps of placing the stacked reinforced-fiber sheets on a pair of side presses (4) opposing to each other with a predetermined gap; inserting a punch (5, 50) through the gap from above to fold the stacked reinforced-fiber sheets in half, while holding ends of the stacked reinforced-fiber sheets between upper surfaces of the side presses by block members (9); drawing out the punch (5, 50) upward and, then, pressing the stacked reinforced-fiber sheets folded by the side presses (4) therebetween. A shaped product shaped thereby is high quality in which a distortion ("fluctuation") of the stacked reinforced-fiber sheets in the inner side ply or plies of bending does not occur and ends of the stacked reinforced-fiber sheets are aligned between plies.