Method of inserting multi-part tooth of an electric machine into a coil

A method of assembling a coil on a multi-part tooth of an electric machine, wherein the multi-part tooth includes a core tooth-portion integrally formed with and extending radially from an annular stator ring extending around an axis of rotation of the electric machine, and at least one wedge-portion having a broader end and a narrower end formed separate from the core tooth-portion, the method comprising:

• inserting the at least one wedge-portion of the multi-part tooth into an opening of the coil such that the broader end of the at least one wedge-portion extends out of a second end of the opening in the coil, wherein the opening extends from a first end to the second end, and wherein a cross-sectional area of the opening varies from the first end to the second end;
• mounting the coil with the inserted at least one wedge-portion on the core tooth-portion of the multi-part tooth such that the broader end of the at least one wedge-portion remains extended out of the second end of the opening in the coil;
• and
• moving the broader end of the at least one wedge-portion towards the first end of the opening.