FIELD: electrical engineering.
SUBSTANCE: invention relates to the electrical equipment. Methods comprise simultaneous production of two flat blanks by means of shaped cutting of initial band of constant width by three cutting devices in accordance with parametric relationships for making annular O-shaped tape elements of spatial symmetrical three-phase magnetic conductor or for making circular magnetic tape elements with ellipse-shaped cross section, which can also be O-shaped if necessary.
EFFECT: technical result consists in almost double saving of electrotechnical alloy and reduction of time of manufacture due to that in one cycle of shaped cutting two flat blanks are obtained at once.
2 cl, 4 dwg
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