Torsion beam manufacturing method and torsion beam manufacturing apparatus
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United States of America Patent
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Nov 15, 2022
Grant Date -
Jun 4, 2020
app pub date -
Sep 10, 2018
filing date -
Oct 4, 2017
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Abstract
This torsion beam manufacturing method is for manufacturing a torsion beam including a central portion of which a cross-section orthogonal to a longitudinal direction is a closed cross-section having a substantial V-shape or a substantial U-shape at any position in the longitudinal direction, and a shape changing portion which has a connection region leading to the central portion and including a closed cross-section having a shape different from the shape of the closed cross-section of the central portion.
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