CAJ | 학술논문

利用自主研制的纳米切削装置，对单晶铜材料开展了基于 SEM 在线观测的原位纳米切削实验。分析了纳米尺度切削深度为10～200,nm 时的切屑形态以及材料去除机制。研究了金刚石刀具刃口半径以及切削速度对切屑变形系数的影响。结果表明，随着纳米尺度切削深度的减小，切屑变形系数逐渐增大，且当切削深度小于刀具刃口半径时，切屑变形系数急剧增大。此外，刃口半径和切削速度对切屑变形系数也有着重要的影响。刃口半径越大，切屑变形系数越大，而切削速度越快，切屑变形系数越小。
이용자주연제적납미절삭장치，대단정동재료개전료기우 SEM 재선관측적원위납미절삭실험。분석료납미척도절삭심도위10～200,nm 시적절설형태이급재료거제궤제。연구료금강석도구인구반경이급절삭속도대절설변형계수적영향。결과표명，수착납미척도절삭심도적감소，절설변형계수축점증대，차당절삭심도소우도구인구반경시，절설변형계수급극증대。차외，인구반경화절삭속도대절설변형계수야유착중요적영향。인구반경월대，절설변형계수월대，이절삭속도월쾌，절설변형계수월소。
The in-situ nanometric cutting experiments on single crystal copper were carried out with online observa-tion,using a nanometric cutting device under SEM chamber. The chips morphology and removal mechanism of dif-ferent depths of cut from 10,nm to 200,nm were analyzed. The influences of the tool edge radius and cutting speed on chip deformation coefficient were studied. The results indicate that the chip deformation coefficient increases with the decreases of the depth of cut,especially when the depth of cut less than the tool edge radius. Moreover,the edge radius and cutting speed also have important effects on chip deformation coefficient. The larger the edge radius,the larger the chip deformation coefficient,and the faster the cutting speed,the smaller the chip deformation coefficient.