| 摘要 |
Operations for uniting together a fixed support base 4 for fixedly supporting a workpiece W and a support die and for composing and decomposing a negative-angle press-forming die to take out a product processed by a negative-angle press-forming process are provided by an L-shaped die and a rotational support mechanism 21 , serving as a pivot on which the L-shaped die is turned, inclined at an inclination determined according to the height range of a curved surface to be formed.
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