Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study on the Improvement of Surface Roughness of Impeller by Selection of Tool Path and Posture and Control of Feedrate

공구경로 및 자세의 선정과 이송률 제어를 통한 임펠러 표면조도 개선에 관한 연구

  • 황종대 (창원대학교 메카트로닉스 기술혁신센터) ;
  • 오지영 (창원대학교 대학원 기계공학과) ;
  • 정윤교 (창원대학교 기계공학과)
  • Published : 2008.12.01
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Abstract

5-axis NC machining has a good advantage of the accessibility of tool motion by adding two rotary axes. It offers numerous advantages such as expanding machining fields in parts of turbo machineries like impeller, propeller, turbine blade and rotor, reasonable tool employment and great reduction of the set-up process. However, as adding two rotary axes, it is difficult to choose suitable machining conditions in terms of tool path, tool posture, feedrate control at a tool tip and post-processing. Therefore in this paper, it is proposed to decide suitable machining condition through an experimental method such as adopting various tool paths, tool postures, and feedrate types. Machining experiment on AL7075 for impeller is performed to define suitable machining condition, and measurement of surface roughness on machined surfaces depended on each machining condition is performed. By defining suitable machining condition, we should have conclusion as improving the surface quality in the aspect of surface roughness and machined shape of surface.

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References

  1. Fontaine, M., Devillez, A., Moufki, A. and Dudzinski, D., 2007, "Modeling of Cutting Forces in Ball-End Milling with Tool-Surface Inclination Part II. Influence of Cutting Conditions, Run-Out, Ploughing And Inclination Angle," J. of MPT, 189, pp 85-96 https://doi.org/10.1016/j.jmatprotec.2007.01.007
  2. Lauwers, B., Dejinghe, P. and Kruth, J. P., 2003, "Optimal and Collision Free Tool Posture in Five-Axis Machining Through the Tight Integration of Tool Path Generation and Machine Simulation," Computer-Aided Design, 35, pp. 421-432 https://doi.org/10.1016/S0010-4485(02)00045-3
  3. Chen, S. L. and Wang, W. T., 2001, "Computer Aided Manufacturing Technologies for Centrifugal Compressor Impellers," J. of MPT, Vol. 115, pp. 284-293 https://doi.org/10.1016/S0924-0136(01)00828-7
  4. Lim, P. and Yang, G. E., 2007, "Optimization of Finish Cutting Condition of Impeller with Five-Axis Machine by Response Surface Method," J. of KSME, Vol. 31, No. 9, pp. 924-933 https://doi.org/10.3795/KSME-A.2007.31.9.924
  5. Lee, C. S. and Lee, J. P., 2001, "Calculating the Feedrate of 5-Axis NC Machining Data for the Constant Cutting Speed at a CL-point," Proceedings of the Society of CAD/CAM Engineers, Vol. 6, No. 2, pp. 69-77
  6. Lee R. S. and She C. H., 1997, "Developing a Postprocessor for Three Types of Five-Axis Machine Tools," J. of Advanced Manufacturing Technology, Vol. 13, pp. 658-665 https://doi.org/10.1007/BF01350824
  7. Cho, E. J., Hwang, J. D., Jung, Y. G., 2006, "Study on the Development of Post-Processor for 5-Axis NC Machining," J. of KSMTE, Vol. 12, No. 1. pp. 53-58
  8. Han, S. G. and Zhao, J., 2007, "A Generalized Simulation Model for Surface Topography Prediction on 5-axis Ball-end Milling," Asian symposium for Precision Engineering and Nanotechnology