| 摘要 |
PROBLEM TO BE SOLVED: To provide a bending device, a bending method and a storage medium wherein a correction value of tensile strength is derived from a hardness value of a workpiece, the generation of an error of a bending angle to a target angle is dissolved, a time required for setting up working is reduced and moreover highly precise bending not affected by a workpiece manufacturing lot is realized. SOLUTION: In a bending device PB such as a press blake, a means which calculates a basic relative distance dimension of a punch 1 and die 2 so that a bending angle coincides with a prescribed target angle, a hardness detecting means which detects actual hardness of a workpiece, a hardness-tensile strength conversion means which expresses in terms of tensile strengthσbased on the hardness value detected with the hardness detecting means, and a means which derives a required pressurizing force BF for bending based on the value after correcting tensile strength calculated with the hardness-tensile strength conversion means and which calculates and decides a value of a final relative distance dimension D2 of the punch 1 and the die 2 based on the required pressurizing force BF are provided.
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