TWO-HIGH NON-POWERED VERTICAL MILL Russian patent published in 2011 - IPC B21C37/08 

FIELD: metallurgy.

SUBSTANCE: two-high non-powered vertical mill includes the bed in which pads, vertical working rolls and mechanism of axial adjustment are arranged with possibility of horizontal movement in its guides towards each other; working rolls are cantilevered on the axis installed in bearing supports of pads and having free threaded end; axial adjustment mechanism of the working roll includes nut with inner thread, which is located on free threaded end of axis, sleeve and washer connected to the axis by means of a screw. Rigidity of the calibre, quality of produced pipes is provided owing to the fact that axial adjustment mechanism of each working roll is equipped with a shell with a flange to be fixed on the edge of working roll and with shoulder interacting with sleeve; on outer cylindrical surface of the shell there mounted is housing with bearing supports and cantilever external pins with a mandrel and with right-hand and left-hand threads connected to adjusted nut; at that, nut of axial adjustment mechanism is provided with the flange interacting with the flange of shell, and coaxial radial holes are made in the sleeve and the above nut.

EFFECT: higher quality of weld pipes and reducing the time for replacement of rolls when another standard size of pipe is produced.

4 dwg