TWISTING DEVICE ADAPTED TO SIMULTANEOUSLY TWIST A PLURALITY OF ELECTRIC BAR CONDUCTORS FOR MAKING A STATOR OR ROTOR WINDING FOR AN ELECTRIC MACHINE AND AN EXTRACTOR ASSEMBLY SUITABLE FOR COOPERATING WITH SAID TWISTING DEVICE

摘要

The invention relates to a twisting device (10) adapted to simultaneously twist a plurality of bar electric conductors (11) for making a stator or rotor winding for an electric machine, comprising at least one first body (12) extending around a twisting axis (Z-Z) and comprising a first circular array of channels (15) having centre on such an axis (Z-Z); and at least one second body (13), extending around and coaxial with the first body (12), comprising a second circular array of channels (16) with centre on the twisting axis (Z-Z); associated with each of the channels (15) of at least one of said first and second arrays, a channel extension groove (15A) extending longitudinally in a direction parallel to the twisting axis (Z-Z) and projecting from the respective channel (15) in a direction (CC) circumferential with respect to said axis (Z-Z).