The invention discloses an integral hard
alloy A-shaped center
drill. The integral hard
alloy A-shaped center
drill comprises a
drill handle, a
drill bit, an oblique
tool bit, an oblique groove, a center column, a straight
tool bit, a straight groove, a clamping block, an identification board and identification rings. The main drill
handle is provided with the identification rings, the identification rings are uniformly distributed at intervals, the identification rings correspond to different depth identification, the identification rings are circumferentially arranged, the identification rings can also control the depth in the rotation process of the center drill, the precision of a thread
machining process is improved, the drill
handle is provided with the symmetric clamping blocks, theclamping blocks can fix the drill handle, the rotating deflection of the drill handle in the application process is avoided, the
drill bit is provided with the oblique
tool bit, a large-area materialcan be
cut and milled, the cross symmetric straight tool bit is arranged on the center column, the connection strength of a center cone can be improved, while the boring speed is increased, the sufficient strength and
wear resistance can also be ensured, and the service life of the center drill is prolonged.