Chip breaker groove cutter capable of cutting sharply

The invention belongs to the technical field of mechanical tools, and particularly relates to a chip breaker groove cutter capable of cutting sharply. According to the chip breaker groove cutter capable of cutting sharply, the trapezoid chip breaker grooves transversely penetrating through the side faces are arranged to form two inflection points, and due to the fact that the first inflection point is provided with the sharp front angle of 25 degrees, the first inflection point can cut into the metal surface easily; when the separated metal sheets reach the first inflection point, continuous folding is generated due to sudden bending, so that the chip removal thickness is increased; and when passing through the second inflection point, the cooling liquid is broken into a tile shape and then discharged along the cooling liquid. Surface nanocrystallization nitriding coating treatment is carried out on the blade base body, through nitriding treatment, the abrasion resistance of the surface of the blade base body