COMBINED AXIAL TOOL Russian patent published in 2011 - IPC B23B51/08 B23G5/20 

FIELD: process engineering.

SUBSTANCE: combined axial tool comprises boring bit-tap, end reamer and stem. Said boring bit-tap has stem with out-of-round-section part, while end reamer has hole mated herewith that has out-of-round section and is fitted on said stem to axially move. Note here that compression spring is arranged between end reamer and stem. Said compression spring may be a telescopic spring and fitted on stem with coils overlapped in direction from the end reamer. End reamer may have body with base outer surface and stepped bore with out-of-round section part that changes into cylindrical part accommodating compression spring. Cutting teeth of, at least, end reamer, may be two-blade symmetric profile teeth.

EFFECT: expanded performances.

4 cl, 11 dwg