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이희관,김연술,김도형,노상흡,양균의,Lee, Hi-Koan,Kim, Yeun-Sul,Kim, Do-Hyung,Roh, Sang-Heup,Yang, Gyun-Eui 한국기계가공학회 2003 한국기계가공학회지 Vol.2 No.4
This paper presents the formed tool to machine a milli-structure mold. The formed tool is used to machine the geometrical shape of bearing rubber seal for precision machining. The bearing rubber seal has milli-sized complex geometry. Because it is difficult to machine the unique shape exactly by the conventional tool, the formed tool is used in machining die of the bearing seal. In this paper, it is performed to investigate properties of the formed tool; tool wear, cutting force and machined surface roughness. Tool wear increases rapidly with clearance angle Increase. Thus, the dimension accuracy is affected by the clearance angle.
툴링볼을 이용한 레지스트레이션시 오차 감소에 관한 연구
홍성균(Sung-Kyun Hong),김연술(Yeun-sul Kim),이희관(Hi-Koan Lee),공영식(Young-Sik Kong),양균의(Gyun-Eui Yang) 한국자동차공학회 2002 한국자동차공학회 Symposium Vol.2002 No.11
This study proposes a method to reduce errors in registration using tooling balls. The method consists of 2 stages. First the data loss of the tooling ball affects calculating the tooling ball center. A z-direction compensation is given to calculate more accurate registration points. Second, three points are used to determine a transformation matrix on each frame. As merging, the maximum error usually lies on the third tooling ball in the conventional method selecting a point among three points randomly. We find the centroid of 3 points and apply it to determine a new transformation matrix.
Insert type 총형공구 여유각 영향에 따른 베어링 Rubber Seal 금형의 가공성 평가
Li, Li-Hai,김연술,김도형,양균의,문상돈 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-
Formed insert type tool satisfy both the surface roughness and geometric accuracy, so that cutting edge of formed tool can duplicate final feature. For experiment, the formed tools with various clearance angles are machined. And the tools are evaluated with respect cutting force, flank wear and surface roughness to optimistic condition.