Patent ID: 7194794

Claim:
A method of producing electrical machines, comprising the steps of providing a base body, wherein said base body is an armature of said electrical machine, said base body comprising a drum-shaped packet of metal sheets, wherein said metal sheets are made of soft-magnetic material, said base body having a periphery which limits a working air gap and has a plurality of grooves with an elongated cross-section and with a groove slot adapted to face the working air gap; introducing at least one insulated electrical conductor in each of said grooves so that said at least one insulated electrical conductor extends over a length of the groove and is fixed in said grooves by a material of the base body which limits the groove slot at both sides; and after insertion of the at least one insulated electrical conductor in the grooves of the base body, introducing a stamping punch into the open groove slot of the grooves and deforming the at least one insulated electrical conductor with the stamping punch over a whole groove length so that its conductor cross-section is adjusted to a groove cross-section in the region of the at least one insulated electrical conductor.