| 摘要 |
PCT No. PCT/JP95/01358 Sec. 371 Date Jun. 4, 1997 Sec. 102(e) Date Jun. 4, 1997 PCT Filed Jul. 7, 1995 PCT Pub. No. WO96/01706 PCT Pub. Date Jan. 25, 1996A press brake for bending a sheet-shaped work between an upper tool and a lower die and a method of bending the work are provided. In the method, at first, bending angles at plural positions of the work are measured by a trial bending. Next, based on the bending angles obtained, an engagement positional relation between the upper tool and the lower die is corrected to achieve accurate bending of the work at a target bending angle in order to carry out the method, the press brake includes a control unit for calculating a D value of a distance from a bottom of the lower die to a tip of the upper tool.
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