MILL FOR PLASTIC WORKING OF METALLIC BAND Russian patent published in 2006 - IPC B21D7/08 B21D13/04 

FIELD: plastic working of metals, possibly shaping articles of sheet materials.

SUBSTANCE: mill includes mounted in housing deforming stands. In order to work band with thickness 0.3 - 2.5 mm mill includes mounted on housing guiding stand having smooth metallic roll and roll provided with elastic members arranged along it edges and equally spaced from center. Each deforming stand except last one includes roll with elastic envelope of polyurethane and rigid roll with cross shaping grooves. In each next stand except last one pitch of arrangement of said grooves on roll exceeds by two times groove arrangement pitch in previous stand. Height h of shaping grooves is in range 0.3 - 25 mm; thickness of elastic envelope ΔH exceeds 2h; length of le of elastic envelope working portion is in range 1.5 h ≤ le ≤ 2500, mm; length lr of working portion of rigid roll is in range lr ≤ le - (10-30), mm. Last deforming stand includes two rigid rolls with shaping grooves for finish deforming.

EFFECT: lowered size and metal consumption of mill.

5 dwg