| 摘要 |
PROBLEM TO BE SOLVED: To provide a press forming method by which wall warp is reduced against a high strength material and also stable forming is obtained. SOLUTION: This two-stage press forming method has a first forming stage where a temporary formed body Ff which is provided with a first forming stage where a temporary formed body Ff provided with a short side-wall part 1f is drawn to the target forming shape of a formed member having a hat-shaped cross section which is a product from a metallic blank by inserting a punch into the forming recessed part of a die and a second forming stage where, after housing and holding the temporary formed body Ff in the forming recessed part 7 of the die 8, the formed member is formed from the temporary formed body Ff by inserting the punch 9 into the forming recessed part 7 of the die 8. COPYRIGHT: (C)2009,JPO&INPIT
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