Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Observation of Chip Shape and Tool Damage with Interrupted Cutting of Carbon Steel for Machine Structures(SM20C)

기계구조용 탄소강(SM20C)의 단속절삭시 칩의 형상 및 공구손상관찰

  • Bae, Myung-Il (Department of Mechanical & Material Engineering Education, Chung-nam National UNIV)
  • 배명일 (충남대학교 기계.재료공학교육과)
  • Received : 2018.03.07
  • Accepted : 2018.03.12
  • Published : 2018.04.30
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Abstract

In interrupted cutting, the workpiece has a groove that impacts both the cutting tool and the workpiece. Therefore, cutting tool damage occurs rapidly. In this study, I performed interrupted cutting of carbon steel for machine structures (SM20C) using an uncoated carbide tool (SNMG120404, P20), and observed tool damage, cutting chip shape, and the workpiece surface. Results: Under the specific cutting conditions of feed rate = 0.066 mm/rev, cutting speed = 120 m/min, and depth of cut = 0.1 mm; and feed rate = 0.105 mm/rev, cutting speed = 120 m/min, and depth of cut = 0.2 mm, the observed tool damage was small. Similar chip shape was observed (Expt. No. 1, 3, 7). Workpiece damage was observed (Expt. No. 3, 5, 7, 9).

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References

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