The electric discharge perforation technology was used to preset the surface texture,which effectively suppressed the generation of large cutting forces in the hard cutting process,avoided the aggravation of tool wear,and improved the service life of the tool.CBN tools were used to hard-cut GCr15 hardened steel.Three-factor non-textured orthogonal cutting simulation and experiment about cutting depth,cutting speed and feed rate,were designed.Range,variance and signal-to-noise ratio methods were used to analyze the simulation and experimental data to determine the best combination of cutting parameters and the influence degree of each parameter on the cutting force generated in the hard cutting process.The best combination of cutting parameters was used to hard-cut GCr15 hardened steel with a preset surface texture,the tool wear was observed,the cutting force was measured,the results were compared with the non-textured experimental data under the same cutting conditions.It is verified the preset surface texture can effectively reduce tool wear and increase tool life.