| 摘要 |
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 |
