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박순섭(S. S. Park),이기용(K. Y. Lee),김형모(Y. H. Kim),황연(Y. Hwang) 한국생산제조학회 2006 한국공작기계학회 춘계학술대회논문집 Vol.2006 No.-
3 methods for grinding, cross grinding, slanted tool axis grinding and parallel grinding, were carried out to study the machinability of tungsten carbide mold for glass formed aspheric lens. In our research, the optimum grinding conditions were investigated in terms of feed rate, relative velocity of wheel and work piece, tool marks and surface roughness. It is shown that cross grinding are most efficient in removal ratio but poor in surface roughness. In addition, tool marks of each method were differentiated on direction and shape.
초정밀가공기를 이용한 경사다각형미러의 절삭특성에 관한 연구
박순섭(S. S. Park),이기용(K. Y. Lee),이호재(H. J. Lee),황연(Y. Hwang) 한국기계가공학회 2006 한국기계가공학회 춘추계학술대회 논문집 Vol.2006 No.-
Generally, the core component of small precise optical device demands high accuracy of manufacturing processes. Although, the geometry of it is simple, the manufacturing technique to materialize is categorized as the ultra-precision machining and it must be done with the specialized machines and by the trained operator. Typical examples of small precise optical device are laser printer and phone camera. As a core part of laser printer, polygon mirror is used in laser scanning unit(LSU). It couldn't be fabricated with conventional machine but specified machine for polygon mirror machining. In this study, Polygon mirror with 16 surfaces was manufactured in the process of ultra precision fly cutting with Al materialand investigated optimum machining conditions in terms of feed-rate, pitch per cycle and depth of cut. Owing to process of polishing has bad influence on reflection angle, surface roughness, Rmax = 10㎚, and form error, Ra = λ/10(λ=632 ㎚), are prerequisites for polygon mirror.