마이크로 드릴에 의한 구멍 가공시 드릴의 손상과 구멍의 관찰 Observation of Drilled Hole and Drill Damage When Hole Machining with Micro Drill
한국기계기술학회지
(韓國機械技術學會誌)
제18권 제4호
(2016.08)
pp.497-502
pp.497-502
한국기계기술학회
(Korean Society of Mechanical Technology)
초록
In this study, i machined micro hole to PCB(Printed circuit board) with ultra precision spindle system for mechanical micro drilling. For this i utilized 0.4∼0.6 ㎜ micro drill and observed cutting edge and hole. Results are as follows; in case of drilling with 0.4∼0.6 ㎜ micro drill, micro hole was made specific range of diameter up to 300 times drilling and micro drilled diameter was bigger than micro drill’s diameter at 300 times over. Error ratio of drilled diameter and damaged hole diameter was within 5 % and 17 %. I observed 0.4 ㎜and 0.6 ㎜micro drill’s cutting edge after 500 times drilling and confirm cutting edge width variation and damage, same result found 1000 times drilling with 0.5 ㎜ micro drill.
저자