FIELD: process engineering.
SUBSTANCE: invention relates to production of laminar boards and shells with light fillers, particularly, to stepped laminar board and method of its production. Proposed board comprises top and bottom shells with folding four-beam filler from sheet blank consisting of elementary modules, each being formed by two beams of sawtooth and zigzag beams. Filler is made stepped from signal blank and comprises inclined folded flat sections in its final transformed state. Inclination of one section allows varying between sawtooth and zigzag beams. Proposed method consists in marking and bending sheet blanks along marked lines, transforming sheet blank into relief state, making n-quantity of stages on filler zigzag and sawtooth lines to be transformed into preset width and height described by mathematical expressions.
EFFECT: better manufacturability.
2 cl, 4 dwg
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