PROGRESSIVE DIE Russian patent published in 1994 - IPC

FIELD: sheet material forming. SUBSTANCE: die has plates with guide columns and bushings, separating and shaping punches and equalizer of off-center loads. Separating punches are mounted in movable punch holders, which are associated with lower plate by means of independent columns and bushings and with upper plate by means of self-centering end journal and thrust bearing. Load equalizer comprises spring sock absorbers. In the course of die operation, off-center loads are compensated by equalizer. Resilient association of punch holders with upper plate and independent columns and bushings exclude skewing of separating tools. EFFECT: enhanced stability of die and improved reliability of its operation. 7 cl, 2 dwg