Coil winding method and apparatus

Details Coil winding method and apparatus Coil winding method and apparatus

1992-10-29

1994-04-12

Larson, Lowell A.

Metal deforming

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

To form helical coil or tube

72145, B21F 304

Patent

active

053015290

ABSTRACT:
A close wound coil is formed by a sequence of steps including supplying a wire to be formed into a coil onto a rotating mandrel by means of a guide wheel and urging the wire against the mandrel by means of a pressure wheel so as to form a coil. The formed coil is allowed to free itself from engagement with the mandrel from a point immediately following that at which the wire is urged against the mandrel by the pressure wheel to the end of the mandrel so that the formed coil, although carried by the mandrel, is unrestrained relative to the mandrel.

REFERENCES:
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patent: 2339424 (1944-01-01), Poole
patent: 2793672 (1957-05-01), Duff
patent: 2909209 (1959-10-01), Ciccone et al.
patent: 3359768 (1967-12-01), Platt
patent: 3785409 (1974-01-01), Smith; III
patent: 4208896 (1980-06-01), Platt
patent: 4302959 (1981-12-01), Yakoulev et al.
patent: 4569216 (1986-02-01), Platt

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