| 摘要 |
PROBLEM TO BE SOLVED: To provide a dieless composite forming method in which a stereoscopic product such as a prototype for mass production press forming can be accurately formed without limiting the forming shape and in a short time. SOLUTION: Rough forming is performed by pushing in a form punch having a forming shape, from the thickness direction of a blank with its edge clamped, and then shape forming is performed with a bar-like tool, from the opposite direction while the form punch and the blank in the thickness direction are held in-between, with the form punch pushed in.
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