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

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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The Process Factor Characteristics and Surface Roughness Prediction of Engineering Plastics in CNC Turning

엔지니어링 플라스틱의 CNC 선반가공에서 공정변수 특성 및 표면거칠기 예측

  • Lee, Jung-Hee (School of Mechanical Engineering, Pukyong National UNIV.) ;
  • Eom, Seong-Jin (Busan Vocational Competency Development Center) ;
  • Kwak, Gil-Dong (School of Mechanical Engineering, Pukyong National UNIV.)
  • Received : 2020.03.16
  • Accepted : 2020.05.11
  • Published : 2020.06.30
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Abstract

Although engineering plastics that are light-weight and have excellent mechanical performance have been widely applied in various industries in place of steel structures to reduce the burden of cost and time, there have been few studies related to their surface roughness. This study aims to evaluate the optimal effects of feed rate, cutting speed, and depth of cut as cutting parameters as well as nose angle on the surface characteristics of MC nylon in CNC lathe machining. To determine the best conditions under different nose radii, the experiments were performed based on the Taguchi L9(34) orthogonal array method, in which the resulting data was analyzed using the S/N ratio and ANOVA. Results indicate that the most significant contribution was feed rate followed by nose angle and cutting speed, whereas the depth of cut did not influence the performance. This study demonstrates that the suggested method for improving the surface finishing of MC nylon is efficient compared with results obtained from experimentation and prediction.

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References

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