| 摘要 |
FIELD: equipment for hole drilling. SUBSTANCE: one-cutting rock drilling bit is used in drilling holes in hard rocks. Roller cutter has flat support with bit body and is inclined in body to be base of roller cutter cone carrying cutting structures which roll over bottom hole by generators of cone surface of roller cutter during rotation of drilling bit. EFFECT: exclusion of wear of percussive working edges (cutting structures) during rotation of drilling bit with its installation on percussive-rotary drills. 2 dwg |
