Patent ID: 7870657

Claim:
A manufacturing device for bending an electromagnetic element of an electrical machine, wherein the electromagnetic element comprises a stator lamination ( 5 ), said manufacturing device comprising a first device ( 10 ) for bending the stator lamination ( 5 ) to form a pre-curved stator lamination and a second device ( 25 ) for final forming of the pre-curved stator lamination; wherein the second device ( 25 ) includes a first assembly ( 29 ) for axially fixing and pressing the stator lamination to form a pre-curved stator lamination and a second assembly ( 28 ) for radially centering and pressing the pre-curved stator lamination; wherein the first device ( 10 ) includes a bending mandrel ( 11 ) around which the stator lamination ( 5 ) is bendable and an outer diameter of the bending mandrel ( 11 ) is larger than an inner diameter of the fully-bent electromagnetic element.