Method of forming a coil spring.

摘要

In a method of forming a coil spring according to this invention, an element wire (40) being transferred longitudinally is passed between a support roller (24) and a first pressing roller (16) and then between the support roller (24) and a second pressing roller (18), and thus coil springs with desired diameters are formed by varying the relative positions of the support roller (24) and the first and second pressing rollers (16, 18) to curve the element wire (40) with desired curvatures.