CUTTING TOOL AND CUTTING PLATE FOR IT Russian patent published in 2010 - IPC B23B51/00 B23D77/02 

FIELD: mechanics.

SUBSTANCE: cutting tool is designed for processing of holes and comprises body, where at least one replaceable cutting plate is installed, being arranged in appropriate seat fixed in it by means of fastening screw and having two cutting blades. On body there is at least one support plate rigidly fixed, having support surface for interaction with processed surface of hole. In order to reduce consumption of tool materials, at least on one support plate there are grooves arranged, which form at least one ribbon on its support surface. Cutting plate has two cutting blades, every of which includes cutting and calibrating edges. At the same time calibrating edges of both blades are parallel to each other. In order to achieve the same technical result in section perpendicular to calibrating edges, it is arranged in the form of angle limited in longitudinal direction by means of end surfaces, besides shelves of angle are arranged at internal angle of 90°-120° and are symmetrical relative to its bisector.

EFFECT: at the same time from the side of end surfaces there are grooves arranged as limited by conical surfaces intended for interaction with head of fastening screw.

3 cl, 10 dwg