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김병희(B. H. Kim),전성건(S. K. Jeon),김헌영(H. Y. Kim),전병희(B. H. Jeon) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.4
Ultrasonic Machining process is an efficient and economical means of precision machining on glass<br/> and ceramic materials. However, the mechanics of the process with respect to crack initiation and<br/> propagation, and stress development in the ceramic workpiece subsurface are still not well understood.<br/> In this research, we investigate the basic mechanism of chemical assisted ultrasonic machining(CUSM)<br/> of glass through the experimental approach. For the purpose of this study, we designed and fabricated<br/> the desktop micro ultrasonic machine. The feed is controlled precisely by using the constant load<br/> control system. During the machining experiment, the effects of HF(hydrofluoric acid) characteristics<br/> and machining condition on the surface roughness and the material removal rate are measured and<br/> compared.
김병희(B. H. KIM),전성건(S. K. JEON),남권선(K. S. NAM),김헌영(H. Y. KIM),전병희(B. H. JEON) 한국생산제조학회 2004 한국생산제조시스템학회 학술발표대회 논문집 Vol.2004 No.4
Ultrasonic machining is effective for machining of extreme hard and brittle materials, including glass, ceramic, carbide, graphite. The major machining principle involves the direct hammering as well as the impact of abrasive particles on the workpiece. Also, it involve cavitation erosion. The general workpiece is flat side. This study attempted micro hole machining of a curved surface of glass tube. Ultrasonic machining is fault of the slow machining speed. An experiment does and got 16 seconds validity machining time as increasing the processing speed. Moreover, entrance crack and sur face roughness was similar both machining speed is slow and fast. Several micro hole of glass tube machined using one micro tool, but tool wear is infinitesimal.
김병희,전성건,남권선,김헌영,전병희 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-
Ultrasonic machining is effective for machining of extreme hard and brittle materials, including glass, ceramic, carbide, graphite. The major machining principle involves the direct hammering as well as the impact of abrasive particles on the workpiece. Also, it involve cavitation erosion. The general workpiece is flat side. This study attempted micro hole machining of a curved surface of glass tube. Ultrasonic machining is fault of the slow machining speed. An experiment does and got 16 seconds validity machining time as increasing the processing speed. Moreover, entrance crack and sur face roughness was similar both machining speed is slow and fast. Several micro hole of glass tube machined using one micro tool, but tool wear is infinitesimal.