Method of producing polygonal closed cross-section structural component with a curved form and polygonal closed cross-section structural component produced by the method
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United States of America Patent
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May 29, 2018
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N/A
app pub date -
Aug 22, 2014
filing date -
Aug 26, 2013
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Abstract
A method of producing a polygonal closed cross-section structural component includes press-forming a metal sheet into a gutter-shaped pre-processed part with a curved form along its longitudinal direction having plural ridge lines corresponding to corner portions of the polygonal closed cross-section in a cross-sectional form developed by cutting the component at a position corresponding to the ridge line located at the innermost side in the radial direction to provide a flange portion extending along the ridge line at the resulting respective ends, and press-forming the pre-processed part to deform inwardly in the cross-sectional direction at a position of one or more of the plural ridge lines to butt the ridge lines located at the innermost side and the flange portions to each other.
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