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为了提高数控机床切削刀具的耐磨性,对数控机床切削刀具车削加工300M钢的磨损过程和磨损特征进行了观察和研究。结果表明,数控机床PCBN刀具随着切削时间的延长,磨损量呈现单调递增的趋势,整个切削过程中没有发生大块崩刃的现象;在正常磨损情况下,随着切削时间的延长,发生在数控机床切削刀具上的磨损主要为磨粒磨损,此外还有粘结磨损和氧化磨损特征。
In order to improve the wear resistance of CNC cutting tools, the wear process and wear characteristics of 300M steel for CNC turning tools were observed and studied. The results show that with the increase of cutting time, the wear amount of PCBN tool of CNC machine tools tends to increase monotonically. No chunk collapse occurs during the whole cutting process. Under normal wear conditions, with the increase of cutting time, The wear on the cutting tools of CNC machine tools is mainly abrasive wear, in addition there are bond wear and oxidation wear characteristics.