Patent ID: 7104100

Claim:
A bending device for a tube comprising: at least one bending die; a clamp jig and a reaction force receiving roller; the clamp jig being movable with the bending die for carrying out draw bending by rotation at a predetermined angle on a circumferential surface of the bending die through a tube to be processed with the tube pressured against the circumferential surface; and a tube twisting unit, which rotates freely at a predetermined angle with a center of the tube to be processed being a core of an axis, and which can move the tube to be processed to a location corresponding to a bending shape, wherein the reaction force receiving roller of the tube bending unit is made selectively rotatable concentrically with the bending die for compression bending of the tube to be processed, and wherein the tube bending unit is provided rotatably in a plane about an axis parallel to a core of an axis of the tube to be processed, and thereby, the amount of displacement in an operation of twisting the tube by the tube twisting unit can be reduced.