• 제목/요약/키워드: 칩 말림

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칩 말림 방지를 위한 고압 분사 노즐 설계에 관한 연구 (A Study on Design of High Pressure Injection Nozzle for Avoiding Chip Curling)

  • 이중섭;윤지훈;정인국;송철기;서정세
    • 한국생산제조학회지
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    • 제20권6호
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    • pp.793-798
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    • 2011
  • In this study, it was grasped to the flow characteristics of cutting fluid injected by nozzle installed in high pressure holder for avoiding chip curling occurred during machining process. And for avoiding chip curling, the possibility of elimination under various chip conditions was checked. Consequently, the highest discharging pressure and velocity was shown in 150 of nozzle inflow angle. Also as nozzle outlet diameter is small, the pressure and velocity of injected flow are high. Moreover, It could be confirmed that width and thickness of chip have no direct effect on chip elimination and it is achieved by torque generated by injected cutting fluid.

유한요소법을 이용한 칩유동에 관한 연구 (A Study on the Chip Flow Using Finite Element Method)

  • 김경우;김동현
    • 한국정밀공학회지
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    • 제18권11호
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    • pp.101-106
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    • 2001
  • In this work, an effort is made to investigate the behavior of a chip, from its initial flow to its final breaking stage. The expression for chip flow in grooved tools is verified analytically using FEM. Cutting parameters like velocity and depth of cut have a profound influence on chip flow behavior. Chip curling increases and, for a given tool geometry, effectiveness of the groove increases with increasing depth of cut. The feasibility of tool design using FEM simulations is also demonstrated. Optimization of tool geometry results in better chip control.

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유한요소법을 이용한 칩유동에 관한 연구 (A Study on the Chip Flow Using Finite Element Method)

  • 김경우;김우순;최현민;채왕석;김동현
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2001년도 춘계학술대회 논문집
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    • pp.891-894
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    • 2001
  • In this work, an effort is made to investigate the behavior of a chip, from its initial flow to its final breaking stage. The expression for chip flow in grooved tools is verified analytically using FEM. Cutting parameters like velocity and depth of cut have a profound influence on chip flow behavior. Chip curling increases and, for a given tool geometry, effectiveness of the groove increases with increasing depth of cut. The feasibility of tool design using FEM simulations is also demonstrated. Optimization of tool geometry results in better chip control.

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고압 분사 홀더를 이용한 절삭가공에 대한 실험적 연구 (An Experimental Study on Cutting Process using High Pressure Injection Holder)

  • 정상완;정인국;이중섭;송철기;서정세
    • 한국생산제조학회지
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    • 제21권5호
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    • pp.790-796
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    • 2012
  • Chip curling occurred during cutting process for difficult-to-cut material detracts product qualities and productivity. Among of method preventing the phenomenon, high pressure injecting cutting oil is an alterative. In this study, the optimal nozzle was designed by CFD method and it was conducted to analyse on the effect of high pressure injection on chip shape generated during cutting process and wear of insert by experimental method. As the result, it could be confirmed that high pressure injection is favorable for preventing chip curling and insert from wearing.