METHOD OF MANUFACTURING A COIL

摘要

Method of manufacturing a coil (6) with a cross section differing from a circular ring cross section, in which method a circular cylindrical coil (1) with a circular ring cross section is first wound and then reshaped into a coil (6) with the other cross section differing from the circular ring cross section, wherein at least two axially parallel fingers (4) of an expander (2) are temporarily inserted into the coil interior for reshaping the wound circular cylindrical coil (1) and are displaced in a diverging relative movement after the insertion and while doing so expand the initially circular cylindrical coil (1) into the coil (6) with the different cross section.