Cutting method prolonging service life of cutter

The invention discloses a cutting method prolonging the service life of a cutter, and relates to the technical field of high-speed cutting. The method comprises the following steps that firstly, the cutting process of the cutter is divided into a running-in wear stage, a stable wear stage and a severe wear stage; then, aggressive cutting is carried out at the running-in wear stage with cutting parameters which are higher than the industrial typical cutting parameters by 20% or above; and then, entering the stable wear stage is carried out after the running-in wear stage is ended, and the cutting parameters are adjusted to be the industrial typical cutting parameters for continuing cutting until the cutter loses efficacy. According to the cutting method prolonging the service life of the cutter, beneficial substances in different sources can be dynamically promoted to be transferred to a friction interface and react to form a protective friction film by adjusting cutting parameters in the cutting process under