DIE SET FOR BLANKING AND MULTIPLE DRAWING

摘要

FIELD: plastic working of metals, possibly manufacture of cylindrical envelopes of thin band or foil. ^ SUBSTANCE: die holder with blanking and drawing dies is rigidly mounted on lower plate of die set. Drawing dies are made of antifriction polymeric materials. Central drawing punch having drawing portion and bead in lateral surface is mounted on upper plate. In lower plate spring-loaded intermediate plate is mounted with use of columns. Said plate carries mounted telescopically blanking and drawing annular sections; one drawing section is provided with shoulder. On non-working ends of drawing sections unclamping rings are mounted. Said rings may engage with respective beads of drawing punch and drawing section. Levers whose one ends are jointly secured to said columns act through their other ends upon intermediate plate. ^ EFFECT: improved quality, reduced cost price of parts. ^ 7 cl, 2 dwg