| 摘要 |
PROBLEM TO BE SOLVED: To provide a bending processing apparatus in which a necessary force for bending a work-piece to be bent can be reduced sufficiently.SOLUTION: A bending processing apparatus comprises a jig for holding a PCM steel plate, a moving part which is movable in a moving direction almost in parallel with the direction to that the PCM steel plate is to be bent and bends the PCM steel plate by contacting the PCM steel plate, and a drive structure 3. The drive part 3 includes a first screw shaft 305, first female screw blocks 306, 307 which engages with the first screw shaft 305, a second screw shaft 308 which rotates by receiving a rotating force of the first screw shaft 305, a second female screw block 309 which engages with the second screw shaft 308 and is movable relatively to the second screw shaft 308 and pantograph parts 304, 319 which move the moving part to the moving direction corresponding to the relative movement of the second female screw block 309. The lead of the second screw shaft 308 is longer than the lead of the first screw shaft 305. |
