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신경회로망 및 반응표면분석법을 이용한 파우더 블라스팅시의 표면거칠기 및 재료제거량 예측
박동삼(Dong-Sam Park),유우식(Woo-Sik Yoo),김권흡(Quan-Qia Jin),성은제(Eun-Je Seong),한진용(Jin-Yong Han) 한국기계가공학회 2007 한국기계가공학회지 Vol.6 No.1
Powder blasting technique has been considered one of the most appropriate micro machining methods for hard and brittle materials, since the productivity is high and the heat layers caused by material removal are very thin. Recent development of special purposed parts, such as the parts for semiconductor processing, the parts for LCD, sensors for micro machine fabrication and so on, has been expanded. Thus, it is essential to develop powder blasting technologies for micromachining of hard and brittle materials such as glass, ceramics and so on. In this paper, the characteristics of powder blasted glass surface were tested under various blasting parameters. Finally, we proposed a predictive model for powder blasting process using the neural network and the response surface method. Detail analysis of the simulation results is carried out and the performance of two predictive models is compared.
황동의 Micro Groove 가공시 절삭칩과 표면거칠기
박동삼(Dong Sam Park),윤대진(Dae Jin Yun),장호수(Ho Su Jang) 한국기계가공학회 2007 한국기계가공학회 춘추계학술대회 논문집 Vol.2007 No.-
Importance of micro pattern such as micro V or R groove which have been used in LGP pattern and optical instrument parts is growing larger recently. This study deals with creation of ultra-precision micro V or R grooves in 6:4 brass using non-rotational single crystal diamond tool and 3-axis micro stages. Chatter generation, chip formation and surface roughness were investigated for the analysis of machinability of 6:4 brass.
Powder Blasting을 이용한 교차구멍의 내부 모서리 디버링
박동삼(Dong-Sam Park),한진용(Jin-Yong Han),성은제(Eun-Je Seong),한일용 한국기계가공학회 2006 한국기계가공학회 춘추계학술대회 논문집 Vol.2006 No.-
Burr generation in intersection hole drilling causes serious problems. These burrs must be removed to make fluid flow smoothly, to improve fatigue life or to prevent injury. Despite the full or partial automation of FMC or FMS, deburring operations to obtain workpiece with fine surface quality are difficult to be automated since the generation and conditions of burr are not constant. This study focused on developing deburring technique for intersection hole in small solenoid valve parts. The successful performance was demonstrated by deburring experiment using the powder blasting.