CUTTING TOOL Russian patent published in 1995 - IPC

FIELD: materials machining. SUBSTANCE: cutting tool has casing 1 with a slot located perpendicular to its longitudinal axis and enabling cutting member 3 placing in it. The cutting member may be fixed by threaded rest. The rest is installed in longitudinal opening in casing wall, and catch 21 is made in the form of one beam for spring loaded two-beamed lever installed such to enable revolution around axis linked to a cantilever fixed such to prevent motion related to the casing. Cutting members 3 are made along all face of the casing 1. Cutting teeth 4 are made on the internal side of casing wall, and hollows between teeth 4 have communication with closed spiral slot 5 and hollows between cutting members 3. Drive shaft 11 and rod 18 are located in the casing. EFFECT: ring drilling and kern cutting advantages. 2 cl, 5 dwg