PURPOSE: To efficiently manufacture a bent article having a rugged pattern 1b without the distortion of rugged pattern 1b and further to easily transfer, form the rugged pattern to a three dimensional or complicated bent article by forming the rugged pattern with rollers 5 on the surface of a work E passing through a movable die 3.

CONSTITUTION: In a bending device wherein as a work E made by an extruded shape is conducted by a feeder 4 through the work conducting holes 2a, 3e of both fixed and movable dies 2, 3, this work E is bent with the movable die 3 by using the fixing die 2 as the fulcrum, the work conducting hole 3e enclosed rollers 5, 5, 5 for transferring the rugged pattern is used as the movable die 3.