Helical spring manufacturing method for steering assembly of vehicle, involves cutting periodic set of adjacent bands in support, and carrying out successive foldings of set around folding axes

摘要

The method involves cutting a periodic set of adjacent bands (1a, 2a, 1b, 2b) in a support. The bands are placed along an elementary pattern constituted by two consecutive bands (1a, 2a) that are symmetric with respect to center of a folding segment (3a) defined by intersection of a folding axis (Aa) with the bands (1a, 2a). Successive foldings of the set are carried out around folding axes (Aa, A, Ab). Independent claims are also included for the following: (A) a helical spring (B) a steering assembly of a vehicle.