Abstract: A method of bending a metallic article comprising at least the following steps is described: a) executing a relative movement between a bending head having at least one bending group and the metallic article, and b) bending the metallic article by means of an activation of the bending group. During step b), at least a first actuation device actuates the bending group according to a respective motion profile and during the step a), at least a second actuation device actuates a relative movement between the bending head and the metallic article according to a respective motion profile. The method also comprises a step of preparing, during which a respective initial motion profile of the first actuation device and/or of the second actuation device is modified for obtaining the respective motion profile in function of a first parameter and of a second parameter.

Abstract: A ventilation assembly has a support structure, an electric motor and a fan connected to the motor. The fan has a cup-like hub with an annular side wall and a bottom wall and which define internally a housing in which the motor extends. The hub further has a plurality of internal vanes for the ventilation of the motor, that extend from the side wall of the hub. The support structure has at least one arcuate formation which is coaxial with the axis of the fan and which extends axially inside the hub of the fan, in a partially interpenetrated relationship with the side wall of the hub to form a labyrinth-like radial path between external and internal regions with respect to the hub.

Abstract: A ventilation assembly has a support structure, an electric motor and a fan connected to the motor. The fan has a cup-like hub with an annular side wall and a bottom wall and which define internally a housing in which the motor extends. The hub further has a plurality of internal vanes for the ventilation of the motor, that extend from the side wall of the hub. The support structure has at least one arcuate formation which is coaxial with the axis of the fan and which extends axially inside the hub of the fan, in a partially interpenetrated relationship with the side wall of the hub to form a labyrinth-like radial path between external and internal regions with respect to the hub.