• 제목/요약/키워드: face turning

검색결과 53건 처리시간 0.021초

단면 선삭가공에서 최적의 표면품위를 위한 피라미터 분석에 관한 연구 (A Study on Analysis of Parameter for Optimal Surface Quality in Face Turning)

  • 맹민재;장성민
    • 한국안전학회지
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    • 제21권1호
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    • pp.21-27
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    • 2006
  • In this paper, object of experiment is to study on the effect parameters to obtain optimal surface roughness in face turning. Surface roughness is significantly important to be high quality of parts produced by turning process. For this purpose, the optimization of cutting parameters for face turning operation is investigated applying the Taguchi method. An orthogonal array, signal-to-noise, and the analysis of variance are employed to evaluate effect of cutting parameters for face turning. Also confirmation tests were performed to make a comparison between the results predicted from the mentioned correlations and the theoretical results. Cutting experiment is performed without cutting fluid using coated tungsten carbide insert about workpiece of SM45C. And regression analysis technique has been used to study the effects of the cutting parameters.

다구찌 방법에 기초한 단면절삭에서 절삭파라미터 영향에 관한 연구 (A Study on the effect of cutting parameters in face turning based on the Taguchi method)

  • 장성민;조명우
    • 한국공작기계학회:학술대회논문집
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    • 한국공작기계학회 2003년도 춘계학술대회 논문집
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    • pp.111-116
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    • 2003
  • In this paper, object of experiment is to study on the effect of cutting parameters to obtain optimal surface toughness in face turning. Surface roughness is significantly important to be high quality of parts produced by turning process. For this purpose, the optimization of cutting parameters for fan Owning operation is investigated applying the Taguchi method. An orthogonal array, signal-to-noise ratio, and the analysis of variance are employed to evaluate effect of cutting parameters fir face turning. Also confirmation tests were performed to make a comparison between the results predicted from the mentioned correlations and the theoretical results. Cutting experiment is performed without cutting fluid using coated tungsten carbide inserts about workpieces of SM45C.

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2차원 선삭시 유한요소법에 의한 고속도강공구의 절삭온도 예측 (Prediction of Cutting Temperature at High Speed Steel in Orthogonal Turning based on Finite Element Method)

  • 전태옥;배춘익
    • 한국정밀공학회지
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    • 제12권10호
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    • pp.102-112
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    • 1995
  • Temperature distribution on the rake face and flank face in orthogonal turning with cutting tool of high speed steel is studied by using a finite element method and experiments. Experiments are carried out to verify the validity of the temperature measurement by using a thermoelectric couple junction imbedded in a cutting tool of high speed steel. Good agreement is obtained between the analytical results and the experimental ones for the temperature distributions on both the rake face and flank face of cutting tool with high speed steel. The analytical results show that the temperature on the top flank face of a tool is higher than it on the top rake face of the tool because of the difference of the friction velocity on each face of the tool.

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2차원 선삭시 고속도강 공구의 플랭크면 절삭온도 예측 (Prediction of Cutting Temperature in Flank Face at High Speed Steel in Orthogonal Turning)

  • 전태옥;배춘익
    • 대한기계학회논문집A
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    • 제20권1호
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    • pp.222-231
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    • 1996
  • Temperature distribution on the flank face in orthogonal turning with cutting tool of high speed steel is studied by using a finite element method and experiments. Experiments are carried out to verify the validity of the temperature measurement by using a thermoelectric couple junciton imbedded in a cutting tool of high speed steel. Good agreement is obtained between the analytical results and the experimental ones for the temperature distributions on flank face of cutting tool with igh speed steel. The analytical results show that the temperature on the top flank face of a tool is higher because of the difference of the friction velocity on each face of the tool.

고속도강공구의 플랭크면 절삭온도 예측에 관한 연구 (A Study on Prediction of Cutting Temperature in Flank Face ar High Speed Steel)

  • 전태옥;배춘익
    • Journal of Advanced Marine Engineering and Technology
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    • 제19권1호
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    • pp.45-53
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    • 1995
  • Temperature distribution on flank face in orthogonal turning with cutting tool of high speed steel is studied by using a finite element method and experiments. Experiments are carried out to verify the validity of the temperature measurement by using a thermoelectric couple junction imbedded in a cutting tool of high speed steel. Good agreement is obtained between the analytical results and the experimental ones for the temperature distributions on flank face of cutting tool with high speed steel. The analytical results show that the temperature on the top flank face of a tool is higher because of the difference of the friction velocity on each face of the tool.

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타원궤적 진동절삭법을 이용한 미세 면선삭 (Micro Turning on Face using Elliptical Vibration Cutting)

  • 김기대;노병국
    • 한국정밀공학회지
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    • 제26권1호
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    • pp.82-88
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    • 2009
  • Ultra-precision turning is highly needed to manufacture molds for precision lens. In this study, micro-turning combined with elliptical vibration cutting (EVC), which is known to enhance micro- machining quality, was investigated by installing a rotary stage into the micro-grooving machine. From machining experiments involving materials of copper, brass, and aluminum and single and poly crystalline diamond tools, it was found that EVC produced thinner and curlier chips and that better surface finish could be achieved, compared with conventional turning, owing to prohibition of formation of burrs and built-up edges. Therefore, we found EVC micro turning could be readily utilized to manufacture precision mold.

쾌삭성 회주철의 개발 (Development of Free Machining Gray Cast Iron)

  • Furuya, Satoshi;Ozoe, Nobuaki
    • 한국주조공학회지
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    • 제42권3호
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    • pp.191-197
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    • 2022
  • This study aims to improve the machinability of gray cast irons in high speed cutting by using nonmetallic inclusions. In this research, small quantities of AL and Mg were added to conventional gray cast irons without influencing their mechanical characteristics and castability to investigate the effects of these nonmetallic inclusions in the gray cast irons on tool wear in high speed cutting. During the high speed turning of gray cast iron containing Al and Mg using a cermet tool, protective layers consisting of Al, Mg, Si, Mn, S and O were detected on the flank face and rake face of the tool, and flank and crater wear were significantly reduced compared to the turning of conventional gray cast iron and gray cast iron added with Al. The effect of inclusions on tool wear increased with increasing cutting speed, and flank and crater wear was the smallest at the cutting speed of 700m/min. Moreover, in face milling, the addition of Al and Mg drastically decreased the wear rate, and wear hardly progressed even in prolonged cutting length after initial wear. The amount of adhesion on tool faces increased as the cutting speed increased. This increase in cutting speed resulted in the formation of a thick protective layer and the reduction of tool wear. Furthermore, the addition of small amounts of Al and Mg prevented thermal cracks in the face milling of gray cast irons.

선반작업에서 직교계획법을 이용한 표면 거칠기 예측모델에 관한 연구 (A Study on the Prediction Model of Surface Roughness by the Orthogonal Design for Turning Process)

  • 홍민성;염철만
    • 한국공작기계학회논문집
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    • 제10권2호
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    • pp.89-94
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    • 2001
  • This paper presents a study of surface roughness prediction model by orthogonal design in turning operation. Regression analysis technique has been used to study the effects of the cutting parameters such as cutting speed, feed depth of cut, and nose radius on surface roughness. An effect of interaction between two parameters on surface roughness has also been investigated. The experiment has been conducted using coated tungsten carbide inserts without cutting fluid. The reliability of the surface roughness model as a function of the cutting parameters has been estimated. The results show that the experimental design used in turning process is a method to estimate the effects of cutting parameters on sur-face roughness.

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고투과율 광학유리(SF57HHT) 초정밀절삭의 실험적 연구 (An Experimental Study of Ultra-precision Turning of High Transmittance Optical Glass(SF57HHT))

  • 김민재;이준기;황연;김혜정;김정호
    • 한국생산제조학회지
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    • 제21권2호
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    • pp.191-195
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    • 2012
  • Heavy flint optical glass(SF57HHT) is new material that has extremely high transmittance. Due to brittleness and high hardness, optical glass is one of the most difficult to materials for ultra-precision turning. According to the hypothesis of ductile machining, all materials, regardless of their hardness and brittleness, will undergo transition from brittle to ductile machining region below critical undefromed chip thickness. In this study, cutting test was carried out to evaluate cutting performance of heavy flint glass using ultra-precision machine with single crystal diamond bite. The machined workpiece surface topography, tool wear and surface roughness were examined using AFM and SEM. The experimental results indicate that the machining mode become the brittle mode to ductile mode, when the maximum undeformed chip thinkness is large than critical value. Tool wear mainly occurs on the flank face and its wear mechanism is dominated by abrasion. This study demonstrates the feasibility of SF57HHT by diamond turning.