Abstract: A machine for bending an elongated workpiece without wrinkling has a roller-like bending die (2) with a vice (3) adapted to retain one end of the elongated workpiece (P) to be bent. The roller-like bending die (2), being provided with a central hole (5) and a groove profile (6) and rotatable about a rotation axis (y), bears, centrally and coaxially in its groove profile (6), a plate element (18) oscillating with respect to the bending die (2) around a rotation axis (y) thereof. The plate element (18) having a peripheral edge (19) which continues the groove profile (6) of the bending die (2) consists of at least two pieces (20, 21) which are adapted to be connected to one another to surround the bending die (2).

Abstract: A mandrel for pipe bending machine has an elongated body (3) with a first end connected to a mandrel rod and a second end, opposite to the first, in which there is a spherical seat (8), several intermediate articulated elements (10) and a terminal articulated element (11). Each intermediate joint element (10) and the terminal joint element (11) have a peripheral part (12) configured so as to lean against the inner wall of a pipe (T) to be bent. Each intermediate articulated element (10) has a cup-shaped part (13) in one piece, and a stem (19) extending externally from it, and a spheroidal part (21) in one piece, configured so as to be introduced in a cup-shaped part (13) of a previous intermediate articulated element (10).

Abstract: A machine for bending an elongated workpiece without wrinkling has a roller-like bending die (2) with a vice (3) adapted to retain one end of the elongated workpiece (P) to be bent. The roller-like bending die (2), being provided with a central hole (5) and a groove profile (6) and rotatable about a rotation axis (y), bears, centrally and coaxially in its groove profile (6), a plate element (18) oscillating with respect to the bending die (2) around a rotation axis (y) thereof. The plate element (18) having a peripheral edge (19) which continues the groove profile (6) of the bending die (2) consists of at least two pieces (20, 21) which are adapted to be connected to one another to surround the bending die (2).

Abstract: An assembly of a machine for bending an elongated piece (T) and relevant support bench is described. The elongated piece (T) is supported by a spindle (3) that comprises a sleeve member (4) suitable to be connected to the elongated piece (T) to be bent, and a spindle frame (5) which rotatably supports the sleeve member (4). The spindle frame (5) is mounted on a platform (6) provided at its bottom with at least a spherical support (7) so that the spindle (3) is able to slide freely on a support bench (2), while the elongated piece (T) is bent.