학술지명: Journal of Precision Engineering and Manufacturing
발행국가: 한국
발표일자: 2020년 12월
SCI여부 : SCIE
원문Link: https://link.springer.com/article/10.1007/s12541-020-00446-1
제목: Experimental investigation on CO2 laser-assisted micro-grinding characteristics of Al2O3
저자: 권우용(LG전자) 김태겸(삼성전자) 송기영(샤프정밀)
내용: 가공이 어려운 세라믹에 레이저와 다이아몬드 공구를 이용해 가공이 가능한 조건을 찾아냄.
초록Abstract: Fabricating micro-scale features in ceramic materials, such as alumina (Al2O3), is challenging because of their high hardness and brittleness. Laser-assisted machining, in which a laser beam is a heat source for pre-softening the local area on a workpiece, is an efective hybrid method for machining ceramics. The study identifed the efects of carbon dioxide (CO2) laser-assisted micro-grinding (LAMG) with a wire electrical discharge grinding polycrystalline diamond tool on Al2O3. Comprehensive investigations have been conducted on the efects of laser beam machining itself and the efect of machining parameters, such as laser beam power, axial depth of cut, and feed rate. The average grinding force was found to decrease by 46% in the thrust direction and 44% in the feed direction, and surface roughness decreased by 17% with LAMG. Moreover, machining at a higher feed rate was possible without tool fracture. The results indicate that the CO2 laser heating of Al2O3 has signifcant advantages over conventional methods regarding machinability and channel geometry. Finally, an improved LAMG process to prevent edge cracks by revising the machining conditions is proposed.
|
기술자료 
HOME > 기술자료> 관련논문 
