Patent ID: 8661868

Claim:
Apparatus for twisting preformed bar conductors for bar windings of electric machines, each of said conductors comprising one or more legs, the twisting apparatus comprising a twisting device having at least a first and a second body coaxial to one another and extending around a twisting axis defining an axial direction and comprising respectively a first and second circular array of pockets with centre on said twisting axis, the pockets being suitable for receiving legs of said preformed bar conductors, said bodies being able to rotate relative to one another around the twisting axis, characterised in that the twisting device comprises a system for clamping bar conductors comprising at least one sliding clamping element able to be moved in a radial direction with respect to said axial direction to take up an advanced operating position in which it has an end portion that projects inside an associated pocket and a set-back operating position, the advanced and set-back operating positions corresponding, respectively, to an operative state clamping the conductor and an operative state releasing the conductor.