Method for winding a soft-magnetic ribbon to form a self-contain

Details Method for winding a soft-magnetic ribbon to form a self-contain Method for winding a soft-magnetic ribbon to form a self-contain

1990-01-26

1991-01-01

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

228191, 228264, H01F 4102

Patent

active

049809652

ABSTRACT:
A method for winding a soft-magnetic ribbon to form a self-contained magnetic core using a winding arbor includes the step of, after the ribbon has been wound on the arbor, holding the free end of the ribbon to the preceding turn by spot welds, disposed in general alignment along a center of the ribbon. The free end of the ribbon may be tapered, so that projecting corners are avoided. By making the spot welds substantially in the center of the ribbon, the formation of eddy currents, which may occur if the spot weld accidentally connected two adjacent turns of the ribbon, are avoided. A similar method may be used to releasably attach the beginning of the ribbon to the arbor, with the spot welds then being broken when the core is removed from the arbor. The method is particularly suited for winding a ribbon consisting of amorphous soft-magnetic material.

REFERENCES:
patent: 2160588 (1939-05-01), Granfield
patent: 2282854 (1942-05-01), Driftmeyer
patent: 4134606 (1979-01-01), Menti, Jr.

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