Patent ID: 8371340

Claim:
An edgewise winding method for forming an edgewise winding having a non-circular outer shape including a bent portion and an unbent portion, wherein the outer shape is rectangular, and the unbent portion includes a pair of long side portions and a pair of short side portions, the method comprises: repeatedly feeding a wire by a fixed distance corresponding to the long side portion; repeatedly feeding the wire by a gradually changing distance corresponding to the short side portion; and edgewise bending the wire by a bending jig while rotating the entire winding to form the bent portion, a side surface of the unbent portion of the winding is supported by a first side support member for the short side portion and a second side support member for the long side portion; after feeding the wire corresponding to the long side portion, rotating the first side support member in sync with the bending jig to bend the wire for long-side bending; after feeding the wire corresponding to the short side portion, rotating the second side support member in sync with the bending jig to bend the wire for short-side bending.