Next Article in Journal / Special Issue
On the Relationship between Structural Quality Index and Fatigue Life Distributions in Aluminum Aerospace Castings
Previous Article in Journal / Special Issue
Effect of Heat Treatment on the In-Plane Anisotropy of As-Rolled 7050 Aluminum Alloy
Open AccessArticle

Detecting Milling Deformation in 7075 Aluminum Alloy Aeronautical Monolithic Components Using the Quasi-Symmetric Machining Method

State Key Laboratory of Virtual Reality Technology and Systems, School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
*
Author to whom correspondence should be addressed.
Academic Editor: Nong Gao
Metals 2016, 6(4), 80; https://doi.org/10.3390/met6040080
Received: 25 February 2016 / Revised: 28 March 2016 / Accepted: 29 March 2016 / Published: 7 April 2016
(This article belongs to the Special Issue Aluminum Alloys)
The deformation of aeronautical monolithic components due to CNC machining is a bottle-neck issue in the aviation industry. The residual stress releases and redistributes in the process of material removal, and the distortion of the monolithic component is generated. The traditional one-side machining method will produce oversize deformation. Based on the three-stage CNC machining method, the quasi-symmetric machining method is developed in this study to reduce deformation by symmetry material removal using the M-symmetry distribution law of residual stress. The mechanism of milling deformation due to residual stress is investigated. A deformation experiment was conducted using traditional one-side machining method and quasi-symmetric machining method to compare with finite element method (FEM). The deformation parameters are validated by comparative results. Most of the errors are within 10%. The reason for these errors is determined to improve the reliability of the method. Moreover, the maximum deformation value of using quasi-symmetric machining method is within 20% of that of using the traditional one-side machining method. This result shows the quasi-symmetric machining method is effective in reducing deformation caused by residual stress. Thus, this research introduces an effective method for reducing the deformation of monolithic thin-walled components in the CNC milling process. View Full-Text
Keywords: thin-walled component; residual stress; deformation; CNC machining thin-walled component; residual stress; deformation; CNC machining
Show Figures

Figure 1

MDPI and ACS Style

Wu, Q.; Li, D.-P.; Zhang, Y.-D. Detecting Milling Deformation in 7075 Aluminum Alloy Aeronautical Monolithic Components Using the Quasi-Symmetric Machining Method. Metals 2016, 6, 80.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map

1
Back to TopTop