The invention provides a screw rod type circumferential direction percussion drilling tool. The stick-slip vibration phenomenon generated by a
drill bit in the process of drilling is reduced. According to the technical scheme, the screw rod type circumferential direction percussion drilling tool is composed of a power
assembly, a cardan shaft
assembly, a drive
assembly and an
impact assembly, theupper portion of the power assembly is connected with a drilling rod, the lower portion of the power assembly is connected with the cardan shaft assembly, the drive assembly and the
impact assembly insequence, and the lower portion of the power assembly is connected with the
drill bit. When working,
drilling fluid enters from the
upper joint to a drive screw rod to rotate, contiguous screw rod transmission shafts and gear driving shafts are driven to rotate in sequence, and thus gears are driven to rotate. Through gear meshing, a percussion hammer is driven to rotate by a driven gear to crashand
impact a shell body to generate an
impact effect, and
torsional vibration generated by the collision is transferred to the lower joint, finally is transferred to the
drill bit to break up rocks.The screw rod type circumferential direction percussion drilling tool can generates torsional impact vibration continuously, the
rock breaking efficiency of the
drill bit is improved, the phenomenonsof sticking of tool and stick slipping generated are effectively reduced or even avoided, torque is balanced, the
drill bit is protected, the service life of the
drill bit is prolonged, and the drilling speed is increased.