ROCK DRILL BIT TOOTH FOR DRILLING OF IMPERMEABLE ROCKS

摘要

FIELD: process engineering.SUBSTANCE: invention relates to rock crushing equipment, particularly, to rock drill bit teeth. Drill bit bucket-shape tooth comprises flow grooves at rear side extending to tooth working edges. Said grooves make fluid channels between tooth rear side and face non-destructed rock to communicate rock destruction zone with bore hole.EFFECT: higher efficiency of impermeable rock crushing owing to equalising hydrostatic pressure ahead of the tooth.5 dwg