Method and apparatus for shaping section bar made of composite material and shaped product and I-shaped stringer thereof
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United States of America Patent
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Nov 28, 2006
Issued Date -
N/A
app pub date -
May 28, 2004
filing date -
May 30, 2003
priority date (Note) -
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Abstract
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 opposing to each other with a predetermined gap; inserting a punch 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; drawing out the punch upward and then pressing the stacked reinforced-fiber sheets folded by the side presses 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.
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