Method of making a coil spring and apparatus therefor

摘要

Disclosed herein is an improved method and apparatus for making a coil spring wherein a wire material is fed on a line of feed which is maintained at a constant position relative to a mandrel adapted for winding the wire material. The mandrel is controlled to pivot into a predetermined angular winding position relative to the line of feed and to move in the axial direction thereof so as to form the wire material into a spring.