• 대한기계학회논문집
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• 제17권12호
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• pp.2926-2935
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• 1993

Chip breaker selection analysis, only being possible through experimental process, was obtained by a applied equation which used an orthogonal cutting model and a basic chip deformation. This equation could present an analysis of the chip breaking phenomena without the use of an actual experimetal method, and it was applied to computer simulation and proved the validity of theory through actual experiments. From these results, an efficient method for finding the optimum conditions of chip breaking was found through an optimized theory being applied to basic program. A finite element model for simulating chip breaking in orthogonal cutting was developed and discussed. By simulation the animation of chip breaking is observed in process on the computer screen.

• 한국기계가공학회지
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• 제10권6호
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• pp.27-32
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• 2011

In recently, it is demanded development of manufacturing techniques for machining of various mechanical parts. Therefore the development of turning is one of the important manufacturing techniques. In this study, an experimental shape in tapered groove turning was suggested, and the turning process was investigated by analyzing cutting speed, feed rate, tapered angle, depth of cut. The surface roughness and cutting force change in the workpiece was measured. From the results, the optimum machining conditions are obtained by design of experiments.

• 한국정밀공학회지
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• 제29권12호
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• pp.1272-1278
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• 2012

The micro barrier rip array structures have been applied in a variety of areas including as privacy films, micro heat sinks, touch panel and optical waveguide. The increased aspect ratio (AR) of barrier rip array structures is required in order to increase the efficiency and performance of these products. There are several problems such as burr, defect of surface roughness and deformation and breakage of barrier rip structure with machining high-aspect ratio micro barrier rip array structure using orthogonal cutting method. It is essential to develop technological methods to solve these problems. The optimum machining conditions for machining micro barrier rip array structures having high-aspect ratio were determined according to lengths ($200{\mu}m$ and $600{\mu}m$) and shape angles ($2.89^{\circ}$ and $0^{\circ}$) of diamond tool, overlapped cutting depths ($5{\mu}m$ and $10{\mu}m$), feed rates (100 mm/s) and three machining processes. Based on the optimum machining conditions, micro barrier rib array structures having aspect ratio 30 was machined in this study.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2003년도 춘계학술대회 논문집
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• pp.209-214
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• 2003

This study presents the analysis of ball end milling machinability and its application to the determination of the optimum feedrate in the CNC machining process of sculptured surface. The methods which estimate the cutting force system is approached experimentally. The estimation strategy, named technological processor, was applied to the machining process of sculptured surface for finding optimum variable feedrate. From the result of practical implementation for the test model, it is ascertain that the technological processor have brought the dispersion of force profiles. As compared with conventional imposing of cutting conditions, the machining time has reduced by more than 60%.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2011년도 춘계학술대회 논문집
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• pp.33-34
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• 2011

• 대한기계학회논문집A
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• 제20권8호
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• pp.2508-2515
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• 1996

Determination of an optimal feed rate is valuable in the sense of the precision and efficient machining. In this regard, a new surface roughness model for the face milling operation that considered the radial and axal runouts of the inserts in the cutter body was developed. The validity of the model was proved through the cutting experiments, and the model is able to predict the real machined surface roughness exactly with the information of the insert runouts and the cutting conditions. From the estimated surface roughness value, the maximum feed rate that obtains a maximum naterial removal rate under the given surface roughness constraint can be selected by using a bisection method. Therefore, this mehod for optimizing the feed rate can be well applied to the using a bisection method. Therefore, this method for optimizing the feed rate can be well applied to the using selsction of the cutting condition during the NC data generation in CAM.

• 한국기계가공학회지
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• 제6권4호
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• pp.50-56
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• 2007

This study aims to find the optimal cutting conditions, when are IR Detection device HgCdTe is machined with diamond tool of diamond turning machine. Machining technique for HgCdTe with single point diamond turning tool is reported in this paper. The main factors influencing the machined surface quality are discovered and regularities of machining process are drawn. It has been found HgCdTe has more and more important applications in the field of modern optics. The purpose of our research is to find the optimum machining conditions for ductile cutting of HgCdTe and apply the SPDT technique to the manufacturing of ultra precision optical components of brittle materials.

• 한국산업융합학회 논문집
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• 제22권6호
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• pp.599-606
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• 2019

In this study, it was aimed to find the optimal cutting conditions by measuring and analyzing the dimensional accuracy of SNCM 616 alloy steel, which is commonly used in industry, by precision hole machining using Ø25 mm and 8-blade reamer in CNC-HBM to be. As a result of the roundness and dimensional accuracy, it was found that the spindle speed had a significant effect on the dimensional tolerance value. Optimum cutting conditions are spindle speed 25 rpm and feed rate 20 mm / min.

• 한국기계가공학회지
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• 제12권6호
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• pp.159-166
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• 2013

In order to develop the optimum shape of an MQL carbide end-mill suitable for high speed machining of wing ribs which are a detailed part of larger wing structures, using a new material Al-Li alloy, a new MQL carbide end-mill is created that has various quantities of holes, hole sizes, and hole locations. A theoretical machining graph is generated using the hammer test and FRF simulation, and a machining test is performed in order to verify the machining stability in the high speed machining area. The optimum configuration of the MQL carbide end-mill is also presented through comparing the chattering, machining noise and cutting conditions, including the maximum cutting depth, rpm, and feed rate per teeth, for each cutter.

• 한국식품영양과학회지
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• 제24권6호
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• pp.937-942
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• 1995

침지 중 강남콩의 절단력은 적색종>분홍색종>백색종의 순으로 컸으나, $10^{\circ}C에서\;10시간,\;20^{\circ}C에서\;8시간,\;30^{\circ}C에서\;6시간,\;40^{\circ}C$에서 3시간 침지한 경우에는 품종에 관계없이 동일한 절단력을 보였다. 동일한 절단력을 나타내는 조건($10^{\circ}C에서\;10시간,\;20^{\circ}C에서\;8시간,\;10^{\circ}C에서\;6시간,\;10^{\circ}C$에서 3시간)을 적정 침지조건으로 하여 침지한 강낭콩의 조리완료 시간은 침지조건에 관계없이 분홍색종이 23분, 적색종이 25분, 백색종이 27분이었다. 조리속도는 침지조건에 관계없이 비슷하엿으나 분홍색종>적색종>백색종의 순으로 컸다. 고형분 용출량은 침지조건과 품종에 관계없이 비슷한 값을 보였으나, 품종에 관계없이 $30^{\circ}C$에서는 최대의 고형분 용출량을, $10^{\circ}C$에서는 최소한 고형분 용출량을 나타내었으며, 백색종은 침지온도 $10^{\circ}C$에서 10시간 침지시 다른 침지조건 보다 고형분 용출량이 훨씬 적어 차이를 보였다.조리액의 색도는 적색종>분홍색종>백색종의 순으로 흡광도가 높았고, 조리시 강낭콩의 최대 흡광도는 분홍색종과 적색종은 490nm였고 백색종은 330nm였으며, 강낭콩 분홍색종과 적색종이 침지조건에는 관계없이 동일한 흡광도를 보였으나, 침지온도 $10^{\circ}C$에서 10시간 침지한 분홍색종은 흡광도가 낮아 특이한 패턴을 보였다.