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ABS 엔지니어링 플라스틱의 하향밀링 시 절삭조건이 표면거칠기에 미치는 영향
이근상(Keun-Sang Lee) 한국산업기술융합학회(구. 산업기술교육훈련학회) 2024 산업기술연구논문지 (JITR) Vol.29 No.1
본 논문에서는 ABS 엔지니어링 플라스틱 가공에 최적의 절삭조건에 근거가 될 수 있는 표면거칠기의 연구를 진행하며 머시닝센터 장비를 활용하여 하향절삭 에서의 최적의 절삭조건 값을 제시하고자 한다. 이를 통해 현장에 서의 최적의 절삭조건을 제시하고자 하며 현장에서 절삭조건 설정을 위한 기초자료를 제시하고자 한다. 절삭조건은 문헌 근거하여 절삭속도와 이송에 대한 값을 대입하여 표면거칠기의 값을 비교하고 절삭깊이에 따른 표면거칠기도 비교함으로써 최적의 절삭조건 값을 제시하고자 한다. In this study, we investigate surface roughness, which can serve as the basis for optimal cutting conditions for ABS engineering plastic processing, and propose optimal cutting conditions for down-cutting using machining center equipment. Accordingly, we aim to provide basic data for setting cutting conditions in the field. The cutting conditions are compared with the values of surface roughness by substituting the values for cutting speed and feed as given in a textbook. Optimal cutting condition values are suggested by comparing different levels of surface roughness based on machining depth.
이정길(Jung-Kil Lee),손덕수(Deuk-Soo Son),이우영(Woo-Young Lee),유중학(Jung-Hak Ryu),임경화(Kyung-Hwa Rim) 한국생산제조학회 2004 한국생산제조시스템학회 학술발표대회 논문집 Vol.2004 No.4
There was not the evident analysis about the cutting process of CNC machining, and wouldn't be difficult to estimate the result of machining for the various cutting conditions. Therefore they were not founded the systemic technology about the optimum cutting conditions and selection of cutting tools. So this study have investigated the common facts for needs through the end-mill cutting machining by Machining-Centers or High-speed cutting machines, and developed the user-centered intelligent decision system to selection of the methodology about cutting conditions to improve the machining efficiency of end-mill cutting process.
이정길,손덕수,이우영,유중학,임경화 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-
There was not the evident analysis about the cutting process of CNC machining, and wouldn't be difficult to estimate the result of machining for the various cutting conditions. Therefore they were not founded the systemic technology about the optimum cutting conditions and selection of cutting tools. So this study have investigated the common facts for needs through the end-mill cutting machining by Machining-Centers or High-speed cutting machines, and developed the user-centered intelligent decision system to selection of the methodology about cutting conditions to improve the machining efficiency of end-mill cutting process.
목재의 CNC 절삭가공에서 절삭조건변화에 따른 가공 표면 상태 분석
김연주,오익수 한국기계기술학회 2019 한국기계기술학회지 Vol.21 No.4
CNC cutting process has been mainly used for processing metal materials, and wood processing is also changing to machining by CNC machine. But the researches on the CNC machining of wood and its characteristics were rarely carried out. In this study, we analyzed the machined surface according to the cutting conditions such as the cutting direction, spindle speed, feed rate, cutting depth, chip removal in the CNC machining of wood. The consideration of cutting conditions and their effects on the surface finish will provide possibilities for improving the wood machining processes.
반응표면법을 이용한 구성방정식의 온도계수 결정과 절삭력 예측
구병문(Byeung-Mun Ku),김태호(Tae-Ho Kim),박정수(Jung-Su Park) 한국기계가공학회 2021 한국기계가공학회지 Vol.20 No.10
The cutting force in a cutting simulation is determined by the cutting conditions, such as cutting speed, feed rate, and depth of cut. The cutting force changes, depending on the material and cutting conditions, and is affected by the heat generated during cutting. The physical properties for predicting the cutting force use constitutive equations as functions of the hardening term, rate-hardening term, and thermal-softening term. To accurately predict the thermal properties, it is necessary to accurately predict the thermal-softening coefficient. In this study, the thermal-softening coefficient was determined, and the cutting force was predicted, using the response-surface method with the cutting conditions and the thermal-softening coefficient as factors.
윤재웅(Jae-Woong Youn),김홍석(Hong-Seok Kim) 한국생산제조학회 2010 한국생산제조학회지 Vol.19 No.1
In general, the direct experimental approach to study machining processes is expensive and time consuming, especially when a wide range of parameters are included: tool, geometry, materials, cutting conditions, etc. The aim of this study is to verify the effectiveness of finite element method for orthogonal cutting process by comparing the simulated cutting forces with measured results. Two commercialized finite element codes AdvantEdge™ and Deform-2D™ have been used to simulate the cutting forces in orthogonal cutting process. In this paper, estimated cutting and feed force components are compared with experimental results for different two materials. As a result, it has been found that FEM simulation is effective for understanding and predicting the orthogonal cutting process although some improvements on friction model and remeshing process are needed.
다구찌 실험 계획법을 이용한 고속가공에서 공구수명 조건의 최적화
양균의,임표 한국기계가공학회 2006 한국기계가공학회지 Vol.5 No.4
High Speed Machining(HSM) reduces machining time and improves surface accuracy because of the high cutting speed and feedrate. Development of HSM makes it allowable to machine difficult-to-cut material and use small-size-endmill. It is however limited to cutting condition and tool material. In the machining operation, it is important to check main parameter of tool life and select optimal cutting condition because tool breakage can interrupt progression of operation. In this study, cutting parameters are determined to 3 factors and 3 levels which are a spindle speed, a feedrate and a width of cut. Experiment is designed to orthogonal array table for L9 with 3 outer array using Taguchi method. Also, it is proposed to inspect significance of the optimal factors and levels by ANOVA using average of SN ratio for tool life. Finally, estimated value of SN ratio in the optimal cutting condition is compared with measured one in the floor shop and reduction of loss is predicted.
MQL 선삭가공에서 절삭력과 표면거칠기 향상에 관한 연구
황영국(Young-Kug Hwang),정원지(Won-Jee Chung),정종윤(Jong-Yun Jung),이춘만(Choon-Man Lee) 한국생산제조학회 2006 한국생산제조학회지 Vol.15 No.4
At present, industry and researchers are looking for ways to reduce the use of lubricants because of ecological and economical reasons. Therefore, metal cutting is to move toward dry cutting or semi-dry cutting. One of the technologies is known as MQL(Minimum Quantity Lubrication) machining. This research presents an investigation into MQL machining with the objective of deriving the optimum cutting conditions for the turning process of SM45C. To reach these goals several finish turning experiments were carried out, varying cutting speed, feed rate, oil quantity and so on, with MQL and flood coolant. The surface roughness and cutting force results of tests were measured and the effects of cutting conditions were analyzed by the method of Analysis of Variance(ANOVA). From the experimental results and ANOVA, this research proposed optimal cutting conditions to improve the machinability in MQL turning process.
Al6061-T6의 선삭가공에서 가공조건에 따른 절삭특성 평가
최태규(Tae-Kyu Choi),김정석(Jeong-Suk Kim),박진효(Jin-Hyo Park),임학진(Hak-Jin Lim) 한국생산제조학회 2009 한국생산제조학회지 Vol.18 No.6
Because of high specific stiffness, the aluminum alloy has been used for various industry field. Specially, the heat-treated aluminum alloy is difficult-to-machine material and machining test is necessary to evaluate and improve the machinability. In order to manufacture the functional part, appropriate cutting condition is selected by considering surface quality, machining time, and workpiece deflection by cutting force. In this investigation, the machinability of Al6061-T6 is estimated by changing cutting conditions. The variable cutting conditions are cutting speed, depth of cutting, and feed rate. The estimation is done by analysis of cutting force, surface roughness, and surface shape according to the change of cutting conditions.