| 摘要 |
PROBLEM TO BE SOLVED: To precisely bend a plate material to a desired shape regardless of a skilled worker or an unskilled worker. SOLUTION: The plate material 1 is intermittently sent out from an outlet 11 of a die material 10, when the plate material 1 is stopped, by moving a push fixture 12, the plate material 1 is pushed to an outlet side end part 11 of the die material 10 to be bent at a fixed angle. In this case, by considering a restoring quantity due to a spring back property of the plate material 1, a moving width H of the push fixture 12 is made larger than the moving width corresponding to a bending angle after restoring of the plate material 1.
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