| 摘要 |
A twisting method (100) and a twisting fixture (10) is described, for twisting free end portions (2A, 3A, 2A', 3A') of bar conductors (1, 1') for the stator or rotor bar winding of an electrical machine which comprises The twisting fixture (10) comprises at least a pocket member (11) including a main structure (11A) provided with an arc (R1) of adjacent pockets (11A') and a secondary structure (11B) comprising further pockets (11B') and which is axially movably mounted with respect to main structure (11A). Some but not all of free ends (2A, 3A, 2A', 3A') of bar conductors are arranged in said adjacent pockets (11A'). The main structure is then rotated to twist said free ends (2A, 3A, 2A', 3A') partly. Then the secondary structure (11B) is axially moved such that the remaining free ends (2A, 3A, 2A', 3A') of bar conductors are inserted in the pockets (11b') therein. Thereafter both the main structure (11A) and the secondary structure (11B) are rotated simultaneously to twist all free ends (2A, 2A') further. |
