Influence of Machining Strategies and Technological History of Semi-Finished Product on the Deformation of Thin-Wall Elements After Milling

Waldemar Łogin 2  ,  
Paweł Pieśko 1  ,  
Department of Production Engineering, Faculty of Mechanical Engineering, Lublin University of Technology, Nadbystrzycka 36, 20-618 Lublin, Poland
PZL Mielec A Sikorsky Company, Wojska Polskiego 3, 39-300 Mielec, Poland
Adv. Sci. Technol. Res. J. 2017; 11(3):289–296
Publish date: 2017-09-03
The paper presents an analysis of the influence of machining strategy and the technological history of semi-finished product on the deformation of thin-walled elements made of aluminium alloy EN-AW 2024 after milling. As a part of this research work, five machining strategies are analysed. Additionally, the rolling direction of the plate (longitudinal and transversal) is taken into account as a technological history. During the research, the focus is set on the effects of the machining strategies i.e. HPC, HSM and conventional machining as well as their combinations on the post-machining stresses and deformations. Each of these strategies has a different range of technological parameters, which results in differences in machining efficiency and introduces post-machining stresses to the surface layer of the workpiece that vary in values and nature (i.e. compressive stresses or tensile stresses). The conducted study shows that larger deformations were obtained for transversal rolling direction in each analyzed case. The lowest deformation both for transversal and longitudinal rolling direction were achieved for the HSM and CM strategy.
Magdalena Zawada-Michałowska   
Department of Production Engineering, Lublin University of Technology, 36 Nadbystrzycka Str., 20-618 Lublin, 20-618 Lublin, Poland