DIE SET FOR TENSION DRAWING OF VEHICLE BODY PARTS Russian patent published in 1997 - IPC

FIELD: manufacture of parts of motor vehicles, tractors, domestic technical equipment and so on. SUBSTANCE: die set for tension drawing of complex-shape parts of vehicle body includes upper and lower plates, punch, die and holders for lengthwise and crosswise sides of blank. Die set is provided with upper and lower sliders mounted respectively on holders for lengthwise sides of blank and on said punch with possibility of reciprocation motion in lengthwise direction from die axis to its periphery. Punch is mounted on lower plate, die is mounted on upper plate. Said upper and lower sliders are mounted with possibility of motion due to applying friction efforts from side of blank being stretched. EFFECT: metal economy due to increased deformation degree and lowered shrinkage of lengthwise sides of tension stretched blank, enhanced quality of formed parts due to elimination of surface waviness. 2 cl, 5 dwg