에어포일 기계가공 변형 연구 = 지그와 가공단계의 영향

다국어 초록 (Multilingual Abstract)

Thin and wide airfoils are difficult to be machined precisely because they are deformed during and after machining processes. This paper presents the results of the airfoil deformation measured by three-dimensional (3D) scanning equipment. It also discusses the influences of fixture and the machining process on the distortion of the thin airfoil. The simple fixture bended the thin airfoil to a Ushape at the first process, and the vacuum fixture decreased the distortion of the machined airfoil at the second process. The long and thin airfoil supported by two points was buckled during the machining at its two end-regions at the third process. Results from this study suggest that use of vacuum fixture decreases the machining distortion of thin and wide airfoils.

참고문헌 (Reference)

1 신용보, "항공기 박판 구조의 가공가능 폭과 두께에 관한 실험 연구" 한국생산제조시스템학회 22 (22): 162-167, 2013

2 황영국, "절삭력에 의한 공구와 공작물의 상대적 변형량 예측 [1]" 한국정밀공학회 27 (27): 86-93, 2010

3 이문재, "공구와 공작물의 상대적 변형량 예측을 위한 해석모델 개발에 관한 연구" 한국정밀공학회 27 (27): 20-26, 2010

4 Robinson, J. S., "Residual Stress in 7449Aluminium Alloy Forgings" 527 : 2603-2612, 2010

5 Richter-Trummer, V., "Methodology for Prediction of Distortion of Workpieces Manufactured by High Speed Machining Based on an Accurate Through-the-Thickness Residual Stress Determination" 68 : 2271-2281, 2013

6 Lee, J. H., "A Study on the Evaluation on High-Speed Machining Characteristics of AL7075" 220-224, 2001

7 Lee, U. M., "A Study on Machining Deformation of Major Structure in Aircraft" 17-19, 2009