Device and method for widening ends of legs of hairpin conductors

A method for widening ends of legs of hairpin conductors arranged in slots of a stator core, said method comprising:

• positioning a separation member being arranged adjacent to an end of at least one radially extending arm positioned between two ends of radially neighboring pairs of legs of said hairpin conductors;
• positioning at least one finger to radially move the two ends of the radially neighboring pairs of legs, wherein:
• the at least one finger is arranged to move radially inward, radially outward, axially upward, and axially downward,
• the at least one finger has a first section adjacent to the separation member,
• the first section has a first radial width smaller than the second radial width and is adapted for moving at least one pair of ends of the radially neighboring pairs of legs,
• the at least one finger has a second section, which does not overlap with the first section,
• the second section has a second radial width and is dimensioned to receive at least one pair of the radially neighboring pairs of legs without moving when the at least one finger is radially moved,
• the first radial width is smaller than the second radial width, and
• a separation web is arranged between the first section and the second section;
• radially moving at least one first pair of legs of said hairpin conductors by radially moving said separation member;
• disengaging said at least one first pair of ends of legs from said separation member;
• and
• radially moving said separation member to a radial position corresponding to the radial position of at least one second pair of legs while keeping said at least one first pair of legs stationary.