Applications in oil drilling and geological drilling or cone bit. Cone bit in the rotation with the impact, crushing and shearing broken formation rock, cone bit to adapt to the soft, medium and hard the various strata. The jet cone bits and long nozzle cone bit, cone bit drilling speed is greatly increased, a major revolution in the history of the development of the cone bit. ???????Applications in oil drilling and geological drilling or cone bit. Cone bit in the rotation with the impact, crushing and shearing broken formation rock, cone bit to adapt to the soft, medium and hard the various strata. The jet cone bits and long nozzle cone bit, cone bit drilling speed is greatly increased, a major revolution in the history of the development of the cone bit. ????????Cone bit teeth type can be divided into the milling steel teeth cone bit, tipped (cone inserts carbide teeth) cone bit; press the cone the number can be divided into single cone, double cone , tricone cone bit. Currently, most domestic and international use, the most common of the three-cone drill. ?Cone bit teeth type can be divided into the milling steel teeth cone bit, tipped (cone inserts carbide teeth) cone bit; press the cone the number can be divided into single cone, double cone , tricone cone bit. Currently, most domestic and international use, the most common of the three-cone drill.