Vlad-Bogdan TOMOIAGĂ, Marcel Sabin POPA


Abstract: To obtain better results for tool life, researchers have improved the microgeometry of the cutting edge. Through cutting edge preparation, a defined rounding and a reduced chipping of the cutting edge can be achieved. For this paper, twisted drills with the K factors: 0.5; 1 and 1.4 were used. The preparation process to obtain the K factors above was micro abrasive jet machining and drag finishing.
Key words: Drill, K Factor, Cutting edge, Micro geometry, Surface integrity

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