DIE SET FOR DIFFERENTIAL FORMING Russian patent published in 1996 - IPC

FIELD: metal pressure forming. SUBSTANCE: a die set has a base, a body, an upper tool unit, being in the form of successively arranged (along a blank) die inserts, provided by links for their motion and having sliders, and a lower tool unit. The die set has an upper supporting plate, a guiding plate, being cylindrical in its lower portion and having vertical guiding grooves. Each insert of the upper die unit is connected with the upper supporting plate by a motion link, being in the form of two-link mechanism and articulation joint assemblies. A link, jointly connected with the die insert, has an arm, whose end supports the slider, mounted with possibility of vertical motion in a vertical guiding groove of the guiding plate. The arms of the two-link mechanisms, jointly secured to the die inserts, have different length values. Each subsequent arm is shorter, than previous one; a length of each vertical guiding groove is less, than a length of a previous one according to an order of motion of the sliders upon deformation process. EFFECT: enhanced structure of the die set. 1 cl, 2 dwg