FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy. Blank is placed on double- or triple-action press die in compliance with first version, and on single-action press die or multistation automatic press in compliance with second version. Then, blank edge is clamped by die pressure plate to female die pressure surface. Then, blank is pulled by male die into female die working part and blank is braked by its edge clamped by pressure plate. Semi forming is terminated by withdrawing male die from female die and pressure plate from semi, or in some other way. After semi forming, pneumatic extractors arranged opposite blank edge are actuated. Rods of pneumatic extractors are withdrawn from female die pressure surface to disconnected semi edge therefrom and to extract semi from female die cavity.
EFFECT: higher precision ands quality.
2 cl, 2 dwg
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