PURPOSE: To make a bending process efficient and simple, by installing a mechan ism possible to freely and continuously apply a bending work lateraly to the longi tude, vetically, and twistingly, to a long size material.

CONSTITUTION: In the bending machine's main body 20, the ball screw unit 25, installed in the machine frame 21, shifts the first slide plate 30 in a specified distance (y), in order to shift the material M, fed by a feeder into the machine 20, in the horizontal direction (Y-Y' axis) perpendicular to the feeding direction (X-X' axis) for the material M. On the other hand, the ball screw unit 35, installed in the first slide plate 30, shifts the second slide plate 40 vertically in a specified distance (z), for the purpose of shifting the material M in the vertical direction (Z-Z' axis) perpendicular to the feeding direction (X-X' axis) for the material M. Moreover, the plate frame 50 is turnefd around by a specified angle θ with the rotation of the geared wheel 51 engaged with the gear of the gear box 45 installed in the second slide plate 40. Hereby, the desired bending work is applied to the material M.