FIELD: mining.
SUBSTANCE: tangential rotary cutter includes a head part with a carbide cutting insert and a tail part with a locking member providing the cutter attachment in the tool holder of the combine working member and representing a circular groove limited in depth and width by the tail ring. The width of the circular groove to the width of the tail ring is in the ratio of 0.7-1.5. Herewith the inner diameter of the circular groove is in relation to the shank diameter as 0.4-0.75, and the groove profile can be made rectilinear or concave with a radius of curvature from half the width of the groove to half the diameter of the shank.
EFFECT: secure fastening of the cutter in the tool holder.
3 dwg
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