To simultaneously form very various bending in both end parts without rotating the member to be worked depending on the situation and to very correctly and rationally execute the bending process by arranging the bonding device so as to be rotatably in that case.

The device for deforming, especially for bending the bar shaped member to be worked (tube part 27) is movable in the machine axial direction and moreover capable of the longitudinal movement in the lateral direction with respect to the machine axis and provided with rotatable fastening devices 14 and at least two bending devices 15, 16 arranged in the separated working station. And these bending devices are arranged in various different sides of fastening devices 14 so as to be rotatable.