Damping effect on chatter stability of turning and milling processes
Mubarak A. M. FadulAlmula1 , Haitao Zhu2 , Hassan A. Wahab3
1College of Mechanical and Electrical Engineering, Harbin Engineering University, No.145 Nantong Street, Harbin, 150001, China
1, 3Faculty of Engineering and Technical Studies, University of Elimam Elmahdi, Kosti, Sudan
2College of Ship Building Engineering, Harbin Engineering University, No.145 Nantong Street, Harbin, 150001, China
Vibroengineering PROCEDIA, Vol. 13, 2017, p. 7-14.
Received 24 August 2017; accepted 4 September 2017; published 26 September 2017
This paper applies damping effect to turning and milling processes in order to enhance their chatter stability while they are in operation. The processes dynamic models and their analytical solutions were presented in detail. The models of the two processes were separately used in MatLab/Simulink with the aid of data from actual cutting tests in order to predict the processes dynamic stability. The developed model and its analytical solution for milling process have been verified by actual milling test. Then the generated stability lobe diagrams with/without damping were compared for each process. The results show that the stable cutting zone is remarkably increased for the employed low cutting speeds. The simulation and experimental results of the damped milling process are consistent. In general, this simulation approach can have practical interest especially in machining of high performance aeronautical hard-to-cut materials.
Keywords: damping, process stability, milling operation, turning operation, lobe diagram, machining chatter, Matlab simulation.
This paper is funded by the International Exchange Program of Harbin Engineering University for Innovation-oriented Talented Cultivation.
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