Small-edge-diameter cutting knife with six cutting edges

The utility model relates to a small-blade-diameter cutting knife with six blades. Comprising a cutter handle; the tool bit is provided with three groups of tool bit working parts, all the tool bit working parts are uniformly distributed on the tool bit, each tool bit working part comprises a main cutting edge and an auxiliary cutting edge, and the radial direction of the auxiliary cutting edge is lower than that of the main cutting edge. In the machining process, chippings are discharged in the direction of the auxiliary cutting edge, so that the cutting knife achieves cutting idling, and the chipping discharging capacity is improved. The angle of 65 degrees is formed between the main cutting edge and the auxiliary cutting edge, and the receding grooves are formed in the auxiliary cutting edge, so that the cutting tool has a better chip removal effect, the receding grooves can be better cut into materials, cutting resistance is reduced, the receding grooves are arranged in a staggered mode and complement one