Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Tool Condition Monitoring with Non-contacting Sensors in Inconel 718 Milling Processes

비접촉센서를 이용한 Inconel 718 밀링가공에서 공구상태 감시

  • Choi, Yong-Ki (School of Mechanical Engineering, Pusan National University) ;
  • Hwang, Moon-Chang (School of Mechanical Engineering, Pusan National University) ;
  • Kim, Young-Jun (School of Mechanical Engineering, Pusan National University) ;
  • Park, Kwang-Hwi (School of Mechanical Engineering, Pusan National University) ;
  • Koo, Joon-Young (School of Mechanical Engineering, ERC/NSDM, Pusan National University) ;
  • Kim, Jeong-Suk (School of Mechanical Engineering, ERC/NSDM, Pusan National University)
  • Received : 2016.10.05
  • Accepted : 2016.11.28
  • Published : 2016.12.15
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Abstract

The Inconel 718 alloy is a well-known super-heat-resistant alloy and a difficult-to-cut material. Inconel 718 with excellent corrosion and heat resistance is used in harsh environments. However, the heat generated is not released owing to excellent physical properties, making processes (e.g., adhesion and thermal fatigue) difficult. Tool condition monitoring in machining is significant in reducing manufacturing costs. The cutting tool is easily broken and worn because of the material properties of Inconel 718. Therefore, tool management is required to improve tool life and machinability. This study proposes a method of predicting the tool wear with non-contacting sensors (e.g., IR thermometer for measuring the cutting temperature and a microphone for measuring the sound pressure level in machining). The cutting temperature and sound pressure fluctuation according to the tool condition and cutting force are analyzed using experimental data. This experiment verifies the effectiveness of the non-contact measurement signals in tool condition monitoring.

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References

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