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SLS 공정을 이용한 산업용 SFF 시스템의 개발 및 소결실험
조홍석(Hong-Seok Jo),조현택(Hyun-Taek Cho),백영종(Yung-Jong Baek),김동수(Dong-Soo Kim) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5
Selective Laser Sintering (SLS) is currently recognized as a leading process in the new field of solid freeform fabrication (SFF). It is used to fabricate in a short time any 3 dimensional shapes by layer-by-layer sintering of polymer, ceramic or metal powder. To develop this SFF system, it needs effective laser scanning path, temperature and z-axis control for lamination. Therefore, in this study, through the application of control algorithm for sintering process have performed, temperature evaluation for sintering process has performed and the manufacturing sample using SLS process.
자동차 크랭크샤프트 멀티 연삭시스템의 구조해석에 관한 연구
최윤서(Yun-Seo Choi),이원석(Won-Suk Lee),황인환(In-Hwan Hwang),박휘근(Hwi-Keun Park),조현택(Hyun-Taek Jo),이영식(Young-Sik Lee),김기정(Ki-Jung Kim),송순태(Soon-Tae Song),이종찬(Jong-Chan Lee) 한국기계가공학회 2012 한국기계가공학회지 Vol.11 No.1
A Crankshaft multi grinding machine is developed for manufacturing of high precision crankshaft. The grinding head part of the developed machine should be moved precisely during grinding of work materials. In this paper, structural and modal analysis for the crankshaft multi grinding machine is carried out to check the design criteria of the machine. The analysis is carried out by FEM simulation using the commercial software. The machine is modeled by placing proper shell and solid finite elements. The results of structural and modal analysis confirmed that the structural characteristics of grinding machine and the structural safety are considered secure.
Al6061 소재의 소구경 고속측면밀링특성에 관한 연구
박휘근(Hwi-Keun Park),이상민(Sang-Min Lee),이충석(Choong-Seok Lee),채승수(Seung-Soo Chae),이원석(Won-Seok Lee),최윤서(Yun-Seo Choi),조현택(Hyun-Taek Jo),백영종(Young-Jong Baek),이종찬(Jong-Chan Lee) 한국기계가공학회 2012 한국기계가공학회지 Vol.11 No.3
In this paper, the high speed milling characteristics of Al6061 was studied. A gantry type milling & tapping center was developed for this study. The cutting force and the resulting surface roughness were measured at various cutting conditions. The experimental results indicate that the surface roughness is relative to the cutting conditions.
IT 부품용 마그네슘 합금의 고속 탭핑가공에 관한 연구
이상민(Sang-Min Lee),박휘근(Hwi-Keun Park),이원석(Won-Seok Lee),김택수(Taeck-Su Kim),채승수(Seung-Soo Chae),이충석(Choong-Seok Lee),백영종(Young-Jong Baek),조현택(Hyun-Taek Jo),이영식(Young-Sik Lee),이종찬(Jong-Chan Lee) 한국기계가공학회 2012 한국기계가공학회지 Vol.11 No.3
This paper reports some experimental results in high speed rigid tapping of magnesium alloy(AZ91D). M3 spiral tap and high speed spindle tapping center of gantry type were used in experiments and thrust forces were measured. The experimental results indicate that the thrust forces are proportional to the spindle speed and depth of cut. The thrust forces increase as the depth of cut increases. M3 Tapping was achieved at the spindle speed of 10,000rpm, depth of cut of 1.5D and total stroke of 32mm.