METHOD FOR MAKING GRID OR GRID SHAPE Russian patent published in 2006 - IPC B21D47/02 B21D31/02 B21D35/00 

FIELD: plastic working of metals, possibly manufacture of metallic grids or grid shapes.

SUBSTANCE: method comprises steps of forming in blank row of notches of the same length arranged in staggered fashion; further deformation of blank by tensioning it. Notches in rows are inclined relative to lengthwise symmetry axis of blank at remaining portions of solid metal. Blank is tensioned by applying to solid metal portions pair of forces directed vertically and simultaneously in said solid metal portions lengthwise grooves are formed. At forming grid solid metal portions are formed along edges of blank. At making grid shape, symmetrical groups of rows of notches are formed in pairs; solid metal portions are formed along edges of blank and between rows of notches. Lengthwise corrugations are formed at tensioning blank. Symmetry axes of corrugations and of lengthwise grooves are arranged along symmetry axis of each solid metal portion arranged between rows of notches.

EFFECT: enhanced efficiency of method.

5 cl, 13 dwg