Roll crossing apparatus for cross-rolling mill

A cross-rolling mill comprising:

• a housing;
• upper and lower rolls;
• upper and lower roll chocks rotatably supporting said upper and lower rolls, respectively, each of said roll chocks having liners on opposite sides thereof, said liners each having an outer cylindrical surface;
• upper and lower cross heads supporting said upper and lower roll chocks, respectively, each of said cross heads having a cylindrical surface at an inner side thereof complementary to and in face-to-face engagement with the cylindrical surface of the liner of the roll check which the cross head supports, and each of said cross heads having a plurality of steps at a gradient with respect to a vertical line at an outer side thereof, the gradient of the steps at corresponding ones of the outer sides of the upper end and the lower cross heads being opposite to one another with respect to the vertical line;
• vertically movable wedges associated with said cross heads, each of said wedges having a plurality of surfaces inclined relative to the vertical line, said plurality of surfaces being in sliding engagement with a number of said plurality of steps at a said outer side of a respective one of said cross heads, vertical movement of said wedges from a given position causing said upper and said lower rolls to cross one another so that rotational axes of said rolls are skewed relative to one another;
• and guides mounted to said housing and engaged with said wedges so as to guide said wedges in their vertical movement.