| 摘要 |
A method (100) is described for twisting preformed bar conductors (25) of electric machines, said conductors (25) comprising a first and a second leg (5) joined together by a connection portion (15). The method (100) comprises the steps of: a) providing (101) a twisting apparatus (30) comprising a twisting device (50) having at least a first (51) and a second body (52) coaxial with each other and extended around a twisting axis (Zt-Zt), respectively comprising a first A1 and a second A2 circular array of pockets with center on such axis (Z-Z), b) loading (102), in a subset of said pockets, a first plurality of said preformed conductors (25) the loading step (102) being such to leave a1 first residual subset of pockets free; c) driving (103) the first (51) and the second (52) body in relative rotation around said axis (Zt-Zt), in order to distance such legs (5) from each other by a first pre-established twisting pitch; d) loading (104), in a second subset of said second plurality of pockets, a second plurality of preformed conductors (25; e) driving (106) the first (51) and the second (52) body in relative rotation around said axis (Zt-Zt), in order to distance the legs (5) of the conductors of the second plurality of conductors from each other by a second pre-established twisting pitch and to further distance the legs of the second plurality of conductors from each other by said second pre-established twisting pitch. |
