FIELD: mining industry.
SUBSTANCE: invention relates to the mining industry and drilling of wells using a diamond drilling tool. The drill bit contains a housing and a matrix with cutters having a cutting surface of an abrasive layer of polycrystalline diamonds in the form of a longitudinal recess applied to the end part of a cylindrical housing with a round base. The cutting surface of the incisors is made in the form of a concave cone, the angle of the vertex of which is calculated according to a certain mathematical dependence, or in the form of a concave sphere, the radius of which is calculated according to a certain mathematical dependence.
EFFECT: reduced vibration, improved cleaning and the destructive ability of the bit.
1 cl, 7 dwg
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