Abstract: A method for obtaining a three-dimensional curve in a tubular product starting from a tube extending along a rectilinear longitudinal axis includes performing, by a first bending device, a first bending operation on a bending plane passing through the rectilinear longitudinal axis (x), so that the tube leaving the first bending device has a curved portion lying on the plane of curvature, and performing on the tube leaving the first bending device, by a second bending device, a second bending operation, so that the curved portion of the tube at the output of the second bending device has a first tangent and a second tangent (t1, t2) at its opposite ends lying on a cylindrical surface having generatrices orthogonal to two planes (A1, A2) respectively containing the first and second tangents (t1, t2). A method for manufacturing complex-curvature tubular products is also provided.

Abstract: A method for manufacturing a complex-curvature tubular product starting from a metal tube extending along a rectilinear longitudinal axis is provided.

Abstract: The measuring unit comprises a first carriage arranged to be connected to the bending machine and to be passed through by the workpiece under bending coming from the bending machine. The first carriage comprises: a main body; a pair of measure rollers; a first measuring device; a guide device; an elastic device; a second measuring device; and a positioning device.

Abstract: The apparatus comprises a first working unit for unwinding a coil of conductor and providing straightened conductor, and a second working unit comprising a bending device arranged to bend the straightened conductor leaving the first working unit and a rotary table on which the bent conductor leaving the bending device is laid, whereby a set of turns is formed to make the superconductive coil. The rotary table is rotatably mounted about a stationary vertical axis. The bending device is mounted so as to be translatable both in a longitudinal direction coinciding with the direction of a longitudinal axis of the straightened conductor that is fed by the first working unit to the bending device and in a transverse direction perpendicular to the longitudinal direction. The first working unit is mounted so as to be translatable, along with the bending device, in the transverse direction only.

Abstract: The apparatus includes a plurality of machines (10, 12, 14) arranged in line along a longitudinal direction (x) coinciding with a feed direction of the blank (C). Each machine (10, 12, 14) is provided with rollers (18, 20, 22) arranged to be driven into rotation by respective motors to work simultaneously on the blank (C) and with a control unit arranged to control these motors. Each machine (10, 12, 14) is provided with a measuring device (24) adapted to provide the control unit of that machine with a measure of the overall reaction exerted by the blank (C) under working on the rollers (18, 20, 22) of that machine along the longitudinal direction (x). The control unit of each machine (10, 12, 14) is arranged to torque-control the rollers (18, 20, 22) of that machine in such a manner that the overall reaction exerted by the blank (C) under working on the rollers (18, 20, 22) of that machine along the longitudinal direction (x) is equal to a predetermined value, zero included.

Abstract: A press for welding magnetic yokes comprises first and second frames movable toward and away from each other, on which there are defined respective confronting and parallel pressure surfaces (12, 35), a motive means (50) acting between the frames (11, 30) to produce the aforesaid movements, and a presser (14, 36) associated with each of the pressure surfaces (12, 35) to define a saddle-piece for receiving the yoke (3). Between at least one of the pressers (14, 36) and its respective pressure surface (12, 35) there intervening an elastically deformable pillow (39) functioning as an adjuster of the deformation under load undergone by the corresponding pressure surface (12, 35). This pillow is composed of an elastic material which has a behavior under load, within a predetermined range of specific loads, that approaches a hydrostatic behavior, that is, such that for a given increase in the deformation there corresponds a proportionally low pressure increase.