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전단모드형 효과를 이용한 MR 피니언 샤프트의 디버링에 관한 연구
박중호(Jung-Ho Park),김홍욱(Hong-Uk Kim),허필우(Pil-Woo Heo),정은아(Eun-A Jeong),신경호(Kyung-Ho Shin) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
In this study, we propose a new approach for MR(Magneti-rheological) Fluid. MR fluid is a type of smart material whose apparent viscosity and yield stress can be easily controlled by an external magnetic field without moving parts. A new deburring technology using MR effect under shear mode is proposed for pinion shaft employed in steering system. Unlike conventional pinion shafts, steering pinion shafts for automobiles equipped with new functions such as LKA(Lain Keeping Assist) and/or autonomous driving require machining due to their special shape, which results in burrs. The proposed mechanism removes burrs by using the MR effect that occurs between the rotating and vibrating shaft and the MR fluid filled in the container. Prototype apparatus using permanent magnets is fabricated, and basic tests on deburring are experimentally investigated and discussed.