FIELD: metallurgy.
SUBSTANCE: one end of tool body accommodates the shank to be fixed in rotary drive and opposite end has thrust collar and working bar. Body outer surface is equipped with manifold to feed coolant to tool body. Tool body has sealed inner chamber shaped to truncated cone expanding towards thrust collar and working bar. Said chamber is filled with volatile coolant in amount sufficient of tool cooling by heat transfer from coolant evaporation area to condensation area. Said manifold is arranged nearby tool shank to cool down said condensation area. Said shank has the channel and plug for the sealing of the latter.
EFFECT: efficient and compact design.
2 dwg
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