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실험계획법에 의한 자동차용 러버실 금형가공을 위한 총형공구의 최적설계
이여해,임표,이희관,양균의,Lee, Li-Hai,Lim, Pyo,Lee, Hi-Koan,Yang, Gyun-Eui 한국자동차공학회 2007 한국 자동차공학회논문집 Vol.15 No.4
A bearing is one of core parts in automobile. Rubber seal of the bearing is important to improve performance of bearing, formed by hot-press die of rubber seal for the intricate shape. In this study, formed tools are used to machine die of bearing rubber seal and the machining operation is classified into the several process of high precision. Design of experiments is used to optimize selection of the formed tools for the efficient machining of the hot-press die. The cutting force, tool wear and tool life are determined to characteristics. And, the clearance angle, the rake angle and the length cutting edge are considered as the major factors. Experiments are repeated to use one-way factorial design, and tool life is predicted by regression model.
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.
Liquid metal을 이용한 고속 양면 가공 및 라틴 방격법에 의한 최적 가공 조건 선정
임표(Pyo Lim),이희관(Hi Koan Lee),양균의(Gyun Eui Yang) 한국생산제조학회 2004 한국생산제조시스템학회 학술발표대회 논문집 Vol.2004 No.10
The rapid machining of prototypes plays an important role in product process. Rapid Prototyping(RP) is the widespread technology to produce prototype. But, it have many problems such as shrinkage, deformation and formation occurred by hardening of resin and stair shaping. On the contrary, high speed machining(HSM) technology has many advantages such as good quality, low cost and rapid machining time. Moreover, it is possible to use the material of original product. This paper presents manufacture of trial product by HSM and optimization of machining condition for high productivity in the view of manufacturing time and average error. For example, propeller is machined by the surface machining of thin surface parts. Experiments are designed of machining conditions by Latin Square method and machining condition is optimized and selected by ANOVA.