METHOD FOR MANUFACTURE OF CHEVRON FILLER WITH CONTACT AREAS Russian patent published in 2009 - IPC B21D13/02 

FIELD: technological processes.

SUBSTANCE: invention is related to technologies for production of light volume fillers from sheet materials and may be used in production of multilayer panels used in aircrafts, construction and other industries. Sheet billet is marked with folding lines, which create alternating pairs of zigzag strips with design value of size difference along width of strips in every pair, which represent combinations of sections in the form of parallelograms. Billet is transformed into relief condition and pressed to limit condition defined by complete mutual contact of corrugation facets, with creation of filler block with wedge-like protrusions in block areas. Then filler block is pressed along height to produce protrusions as a result of crumpling, and therefore, flat double-sided folds are created in their place - areas of variable width along length of zigzag strips joint within the limits of every facet. Afterwards filler block is stretched to preset condition defined by rated value of block height, and height of wedge-like protrusions is defined by value of size difference along width of zigzag strips assigned from condition of provision of required area of contact area.

EFFECT: strength and reliability of multilayer panel is increased, and its specific mass characteristics are improved.

2 cl, 5 dwg