The present application relates to the technical field of milling
processing, in particular to a symmetrical
drill bit and a milling equipment thereof, the cutter main body of the symmetrical
drill bit is composed of a cutter bar, a cutter holder, a blade groove and a blade, the blade is provided in a triangular hexagonal structure, the circumferential side of the blade is provided with staggered distribution
chip separation grooves, the surface of the blade is provided with
closed loop chip breaking grooves, and the
chip breaking grooves are internally fixed with chip removal points, the symmetrical
drill bit will not vibrate during milling, and can effectively break the chips; the lifting part of the milling equipment comprises a cutter mounting mechanism and a lifting mechanism, the
processing part comprises a feeding mechanism, a
yaw mechanism for intermittently pushing the workpiece and a workpiece clamping mechanism for clamping and fixing the workpiece, the milling equipment can complete automatic clamping of the workpiece, drilling and automatic feeding of the workpiece in the process of reciprocating lifting of the cutter main body, the whole
processing process is
fully automated, and the production efficiency is improved.