| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and system for sheet metal working which prevent deformation of a hole part, a formed part or the like during bend forming and also improve work efficiency through a reduction of extension in the rectangular direction to the bending line, by forming a groove in the bending line position and decreasing a thickness in the bending line portion, taking note of deformation mechanism in the hole part, formed part or the like which is generated during bend forming on a workpiece with the hole part, formed part or the like processed in advance during blanking, near the bending line such as a flange part. SOLUTION: Before bend forming is performed on the workpiece W with the hole part A, formed part or the like hear the bending line M, a designated groove G is formed in the bending line M position. In the case, the designated groove G is formed either stretching through the length of the bending line M or in a fixed interval L on the bending line M. COPYRIGHT: (C)2005,JPO&NCIPI
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