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2륜 및 4륜차 범퍼의 센서 장착을 위한 펀칭 최적화 공법 연구
이대섭(Daesuep Lee),김종석(Jongsuk Kim),최종용(Jongyong Choi),이정휘(Junghwi Lee) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
Recently, Front Warning Sensor and Back Warning Sensor installed with Driver’s safety system in 2wheel and 4wheel automobile are adopted with standard specifications. The initial time, those sensors were the protruding shape. But, Sensor is changed to Not-protruding type step by step, due to the failure of sensor, improvement design and so on. So, when the type of sensor and assembling method are changed, the process installing sensor must be changed. For the process of installation, protruding type is the order of injection molding, painting, final machining and assembling. Not-protruding type is the order of injection molding, final machining, painting and assembling. So, When it punches holes in bumper for installing sensor, Not-protruding type has the problems like formation of painting and tearing out plastics. In this study, after comparing with oil-air pressure punching system and supersonic punching system, it will suggest the definition and the process of supersonic punching system optimized for good quality of sensor’s hole.