XK8450HD CNC roll notching machine is suitable for processing cylindrical with diameter less than 500mm, length less than 2500mm roll, automatic processing of φ 5~ φ 60 screw steel roll of various specifications of crescent, high rib groove (GB1499-2017 standard). And according to customer requirements of automatic cutting different rotation direction, arbitrary helix crescent groove angle, can equal to any in the roll week (or unequal) indexing or spaces, but also can automatically seal product specifications, in the roll on any position grade, brand mark. Also can be arbitrary groove, text, marking processing of non-standard roller according to user requirement.The utility model can achieve the purpose of high automation, outstanding performance and multiple purposes of one machine.