BUILTUP DRAWING DIE Russian patent published in 1996 - IPC

FIELD: drawing equipment. SUBSTANCE: drawing die has two members with contact portions defining broken stepped plane of connection. Working parts of drawing die are in the form of successively arranged reducing and sizing zones. Each member of the drawing die has steps of large and small length values; working portions are provided on both steps along the whole length including reducing and sizing zones along width of the steps. The assembled members are mounted one relative to another in such a way, that larger-length step of one member is in contact with small-length step of another member. Surfaces of the small length steps adjoin to surfaces, forming working portion of reciprocal member. EFFECT: enhanced structure of drawing die. 1 cl, 5 dwg