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Optimization of Finish Cutting Condition of Impeller with Five-Axis Machine by Response Surface Method

반응표면법을 이용한 5축 임펠러 정삭 가공의 최적화

  • 임표 (전북대학교 공업기술 연구소) ;
  • 양균의 (전북대학교 기계항공시스템 공학과)
  • Published : 2007.09.01

Abstract

An impeller is a important part of turbo-machinery. It has a set of twisted surfaces because it consists of many blades. Five-axis machining is required to produce a impeller because of interference between tool and workpiece. It can obtain good surface integrity and high productivity. This paper proposes finish cutting method for machining impeller with 5-axis machining center and optimization of cutting condition by response surface method. Firstly, cutting methods are selected by consideration of operation characteristics. Secondly, response factors are determined as cutting time and cutting error for prediction of productivity. Experiments are projected by central composite design with axis point. Thirdly, regression linear models are estimated as single surface in the leading edge and as dual surface in the hub surface cutting. Finally, cutting conditions are optimized.

Keywords

Impeller;Five-axis Machining;Finish Cutting;Optimal Cutting Condition;Response Surface Method

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