FIELD: mining.
SUBSTANCE: invention relates to the mining industry, in particular to a tool for a drilling tool. Cutter for the drilling tool comprises a tail portion, a working portion rotated at an angle to a longitudinal vertical plane of symmetry of the tail portion including the main, rear, side surfaces and the cutting portion. Working part is turned at an angle of 16÷28˚ around the longitudinal axis of symmetry of the tail section and is inclined to the left at an angle of 18÷31˚ with respect to the vertical symmetry plane of the tail part towards the center of the rotation circle. Radial notch is made at the junction of the working and tail parts on the inner side of the tool. On the outside of the working part, an additional face is made, and the cutting part is formed by the main and rear surfaces.
EFFECT: technical result consists in reducing the cutting forces of the ground, reactive torque, material consumption, energy consumption and prolongation of service life.
7 cl, 9 dwg
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