| 摘要 |
A method of forming a stator assembly for a dynamo electric machine. The stator assembly is of the kind including a laminated member in the form of a helically coiled metal strip, and the method includes driving the metal strip into a former which coils the strip helically. As the strip is coiled helically a set is imparted to the strip so that the convolutions of the coiled strip produced are biased towards one another in an axial direction by their own inherent resilience. Apparatus for performing the method includes a former having a cylindrical concave surface. A driving arrangement drives the metal strip against the cylindrical concave surface of the former so that the strip is deformed into a helical coil. The apparatus includes means for example including a pair of rolls between which the strip passes, and which deflect the strip, so as to impart to the strip a set such that the convolutions of the helically coiled strip produced are biased in an axial direction towards one another. |
