Experimental and Computational Analysis of Machining Processes for Light-Weight Aluminium Structures |
| Journal |
Advanced Materials Research (Volume 43) |
| Volume |
Flexible Manufacture of Lightweight Frame Structures |
| Edited by |
Klaus Weinert, Jürgen Fleischer, A. Erman Tekkaya, Michael Zäh, and Marco Schikorra |
| Pages |
97-104 |
| DOI |
10.4028/www.scientific.net/AMR.43.97 |
| Online since |
April, 2008 |
| Authors |
Klaus Weinert,
Dirk Biermann,
Michael Kersting,
Sven Grünert
|
| Keywords |
End-Cross-Section, Finite Element Analysis (FEA), Milling Process |
| Abstract |
Different possible reasons for defects have to be considered in machining light-weight
aluminum structures. In the machining process, the cutting power affecting the workpiece leads to a
thermo-mechanical load that can cause undesirable workpiece deformations and thus shape
deviations. Moreover, the microstructure and the machined surface can be influenced, which is
detrimental to the later application of the structures. Previously conducted experimental and
simulative investigations, estimated the circular milling process to be the most suitable machining
operation that provides the best compromise between mechanical and thermal loads compared to
drilling operations [1,2].
In this paper the results of machining end-cross-sections of an aluminum profile are presented. The
machining was obtained by a milling process, which is demanding, because of the low profile
stiffness. For this process it is important to know the effects of machining in view of the shape
deviations. By means of a Finite-Element-Analysis the deformations of the profile web can be
calculated as well as validated by experiments. Based on these results, the appropriate process
parameter values for end machining can be defined. |
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