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Liquid metal을 이용한 고속 양면 가공 및 라틴 방격법에 의한 최적가공 조건 선정
임표(Pyo Lim),이희관(Hi Koan Lee),양균의(Gyun Eui Yang) Korean Society for Precision Engineering 2005 한국정밀공학회지 Vol.22 No.10
This paper presents manufacture of mock-up by HSM and optimization of machining condition for high productivity in the view of manufacturing time and accuracy. The rapid machining of prototypes plays an important role in building mock-up. Rapid Prototyping(RP) is a technology to make 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. HSM and RP is compared for machining efficiency. Experiments are designed by Latin Square Method and machining condition is optimized and selected by ANOVA. For example, propeller is machined by the surface machining of thin surface parts.
임표(Pyo Lim),장동규(Dong Kyu Jang),이희관(Hi Koan Lee),양균의(Gyun Eui Yang) Korean Society for Precision Engineering 2004 한국정밀공학회지 Vol.21 No.1
High speed machining (HSM) can reduce machining time with the high metal removal rate by high speed spindle and feedrate. This paper supports HSM technology using the small size tool with the optimal tool path generation and modification of tool change. The optimum tool path is generated to reduce cutting length of cavity pattern and change the cutting tool for preventing the tool breakage by wear. The tool path is modified with the experiment data of tool wear and breakage to support tool change on reasonable time. The result can contribute to HSM technology of high hardness materials using the small size end-mill.
요인 실험계획법 및 회귀분석을 이용한 소경 엔드밀의 공구수명에 대한 연구
임표(Pyo Lim),박상윤(Sang Yoon Park),양균의(Gyun Eui Yang) Korean Society for Precision Engineering 2006 한국정밀공학회지 Vol.23 No.2
High speed machining(HSM) technique is widely used in the appliance, automobile part and mold industries, because it has many advantages such as good quality, low cost and rapid machining time. But it also has problems such as tool breakage, smooth tool path, and so on. In particular, small size end mill is easy to break, so it must be changed before interrupting operation. Generally, the tool life of small size end mill is affected by the milling conditions whose selected parameters are spindle speed, feedrate, and width of cut. The experiments were carried out by full factorial design of experiments using an orthogonal array. This paper shows optimal combination and mathematical model for tool life, Therefore, the analysis of variance(ANOVA) is employed to analyze the main effects and the interactions of these milling parameters and the second-order polynomial regression model with three independent variables is estimated to predict tool life by multiple regression analysis.
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.
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.
Liquid metal을 이용한 고속 양면 가공 및 라틴 방격법에 의한 최적 가공 조건 선정
임표,이희관,양균의 한국공작기계학회 2004 한국공작기계학회 추계학술대회논문집 Vol.2004 No.-
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