Manufacturing method of member, manufacturing method of member for vehicle, and die and punch
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United States of America
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Dec 31, 2024
Grant Date -
Apr 28, 2022
app pub date -
Mar 27, 2020
filing date -
Mar 27, 2020
priority date (Note) -
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Abstract
A manufacturing method of a member according to an aspect of the present invention is a manufacturing method of a member including a specific three-dimensional tubular portion, the manufacturing method including: a U-forming step of performing U-forming on metal material sheet using a U-forming die and punch including a U-forming punch to manufacture a U-formed article having a recessed cross-sectional shape; and an O-forming step of causing side end portions of the U-formed article to abut each other by an O-forming die to form abutting portions, in which a forming condition ratio a=Du/Do is set to 0.85 to 0.95.
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