Investigation of Machined-Surface Condition and Machining Deformation in High-Speed Milling of Thin-Wall Aluminum 7075-T651

알루미늄 합금(Al7075-T651)의 얇은 벽 고속밀링 가공 시 가공표면 상태와 가공변형 특성

Koo, Joon-Young;Hwang, Moon-Chang;Lee, Jong-Hwan;Kim, Jeong-Suk

  • Received : 2016.04.04
  • Accepted : 2016.06.09
  • Published : 2016.06.15


Al alloys are useful materials having high specific strength and are used in machining of parts having thin-walled structures for weight reduction in aircraft, automobiles, and portable devices. In machining of thin-walled structures, it is difficult to maintain dimensional accuracy because machining deformation occurs because of cutting forces and heat in the cutting zone. Thus, cutting conditions and methods need to be investigated and cutting signals need to be analyzed to diagnose and minimize machining deformation and thereby enhance machining quality. In this study, an investigation on cutting conditions to minimize machining deformation and an analysis on characteristics of cutting signals when machining deformation occurs are conducted. Cutting signals for the process are acquired by using an accelerometer and acoustic emission (AE) sensor. Signal characteristics according to the cutting conditions and the relation between machining deformation and cutting signals are analyzed.


Aluminium alloy (Al7075-T651);Thin-wall machining;High speed milling;Cutting signal characteristics;Machining deformation;Machined surface condition


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Supported by : 한국연구재단