METHOD FOR MAKING ANGULAR LATTICED SHAPE Russian patent published in 2004 - IPC

FIELD: plastic working of metals, namely manufacture of angular latticed-structure shapes.

SUBSTANCE: method comprises steps of moving blank to multi-stand shape-bending mill for perforating blank and forming shape; preliminarily forming along length of blank and along its symmetry axis lengthwise groove; perforating blank for making rhomb-like net due to making in blank surface rows of lengthwise slits of the same length arranged in adjacent rows in such a way that they are mutually shifted by half of their length; then successively stretching-out blank from its boundary slits to slits arranged nearer to symmetry axis of blank; forming shape in the form of angle between latticed ledges of shape due to their successive bending one towards other while using blank in the form of band whose width is equal to length of non-stretched ledge; in order to make rhomb-like net stretching-out by pairs two boundary (symmetrical relative to lengthwise axis) rows of slits until providing designed width of rhomb; after forming angle leveling outer surface of ledges of shape in additional working stand.

EFFECT: enhanced efficiency of method due to performing wholly automatic process.

4 cl, 18 dwg