Incremental sheet forming (ISF) is a highly versatile and flexible process for rapid manufacturing of complex sheet metal parts. Compared to conventional sheet forming processes, ISF is of a clear advantage in manufacturing small batch or customized parts. ISF needs die-less machine alone, while conventional sheet forming requires highly expensive facilities like dies, molds, and presses. This equipment takes long time to get preparation for manufacturing. However, ISF does not need the full facilities nor much cost and time. Because of the facts, ISF is continuously being used for small batch or prototyping manufacturing in current industries.However, spring-back induced in the process of incremental forming becomes a critical drawback on precision manufacturing. Since sheet metal, being a raw material for ISF, has property to resilience, spring-back would come in the case.It is the research objective to investigate how geometrical shaping parameters make effect on shape dimensional errors. In order to analyze the spring-back occurred in the process, this study experimented on Al 1015 material in the ISF. The statistical tool employed experimental design with factors. The table of orthogonal arrays of L8 (27) are used to design the experiments and ANOVA method are employed to statistically analyze the collected data. The results of the analysis from this study shows that the type of shape and the slope of bottom are the significant, whereas the shape size, the shape height, and the side angle are not significant factors on dimensional errors. More error incurred on the pyramid than on the circular type in the experiments. The sloped bottom showed higher errors than the flat one.

본 논문에서는 재미있는 게임을 하면서 재활 및 신체 평형 능력 향상에 이용하기 위하여 전자 장치를 장착한 밸런스 보드와 기능성 게임 콘텐츠를 개발하였다. 재미있는 게임을 이용한 재활 훈련은 환자의 재활 훈련 효과를 높일 수 있을 것이다. 퍼스널 트레이닝 시스템은 밸런스보드에 가속도 센서를 부착하였으며, 게임 컨텐츠는 신체의 평형 정도에 따라 동작한다. 개발된 시스템을 검증하기 위하여 재활 훈련 게임 컨텐츠를 개발하였다. 제안된 컨텐츠는 간단한 재활훈련과 신체 평형 운동에 적용할 수 있으며, 또한 여기서 제안된 인터페이스는 에뮬레이터를 통하여 여러 가지 기능의 상용 게임에 적용할 수 있다.