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Investigation of Cutting Conditions for Stable Machining and Machinability Evaluation in Milling Process of Al7050-T7451 by Response Surface Methodology

Al7050-T7451 소재의 밀링가공에서 반응표면법에 의한 가공성평가 및 가공안정화를 위한 절삭조건선정

  • Koo, Joon-Young (School of Mechanical Engineering, Pusan National University) ;
  • Cho, Mun-Ho (School of Mechanical Engineering, Pusan National University) ;
  • Kim, Hyuk (School of Mechanical Engineering, Pusan National University) ;
  • Kim, Jeong-Suk (School of Mechanical Engineering / Engineering Research Center for Net Shape and Die Manufacturing, Pusan National University)
  • Received : 2014.05.06
  • Accepted : 2014.06.11
  • Published : 2014.06.15

Abstract

Aluminum alloy is a core material for structural parts of aircraft and automobiles to reduce the weight and maintain high specific strength. This study evaluates the machinability and investigates the optimal cutting conditions considering the surface integrity and productivity for Al7050-T7451 milling. The machining variables considered are the feed per tooth, spindle speed, axial depth of the cut, and radial depth of the cut. The machinability evaluation of Al7050-T7451 is conducted by analyzing the cutting force signals, acceleration signals, AE signals, and machined surface conditions. The optimal cutting conditions are determined by analyzing the experimental results using response surface methodology for stable machining considering the productivity and surface integrity.

Keywords

References

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