FIELD: mining.
SUBSTANCE: tool includes a housing and a hard-alloy insert that is fixed on the housing. The insert includes a head part, an intermediate part, a base and a shank. Intermediate part of the insert, and/or its base represent a stepped pyramid-shaped body, the stages of which are made in the form of regular right-angle prisms and/or prismatoids.
EFFECT: optimisation of geometrical parameters of a hard-alloy insert.
10 cl, 8 dwg
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