PIERCING MILL Russian patent published in 2020 - IPC B21B13/00 

FIELD: technological processes.

SUBSTANCE: invention relates to a rolling mill, in particular to a piercing mill comprising a plurality of roller shafts (1), each of which is configured to apply a substantially radially directed rolling force to the workpiece, note here that adjustment of shaft (W) axis orientation of at least one of roll shafts (1) is performed around first positioning axis (S1) and around second positioning axis (S2). Ability reduction of losses on friction forces during shaft displacement is provided due to the fact that intermediate element (9, 10) is located between rotary support (4, 5) of roll shaft (1) and actuating element (11, 12), wherein intermediate element (9, 10) comprises pusher (14, 15) transmitting rolling force, which due to hemispherical bearing surface (14a, 14b, 15a, 15b) is made with possibility of rotation into multiple directions.

EFFECT: enabling reduction of friction force losses during shaft shifting.

7 cl, 3 dwg