Method of making a coil spring and apparatus therefor

Details Method of making a coil spring and apparatus therefor Method of making a coil spring and apparatus therefor

1984-08-31

1986-03-18

Larson, Lowell A.

Metal deforming

By deflecting successively-presented portions of work during...

To form helical coil or tube

72138, 242 701, B21F 304

Patent

active

045760284

ABSTRACT:
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.

REFERENCES:
patent: 2758629 (1956-08-01), Lewis
patent: 3106177 (1963-10-01), Nicolaisen

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