COMBINATION TOOL FOR WORKING HOLES Russian patent published in 1995 - IPC

Abstract RU 2028880 C1

FIELD: metal working. SUBSTANCE: tool has a drill, having a double-step form, and cutting plates of the counterbore 2, inclined by an acute angle relative to a plane, normal to the axis 7 of the drill. The less diameter step 17 of the drill is arranged at side of its stem 5, the cutting plates are mounted with possibility of engaging with the end part 11 of the drill, designed for separation of its step portions 16, 16. EFFECT: enhanced structure of combination tool. 1 cl, 3 dwg

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RU 2 028 880 C1

Authors

Denisenko Vladimir Ivanovich

Dates

1995-02-20—Published

1992-10-05—Filed