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Semi-discretization method is expanded to determine the stability charts of NFDE for milling processes including process damping. The method is based on a special kind of discretization technique with respect to the past effect only. The convergence of approximate method is investigated by the example of delayed Mathieu equation, and stability charts of the damped and neutral delayed Mathieu equation...
In order to control the cutting chatter in machining of thin-walled workpieces, the dynamic milling model of thin-walled workpieces is analyzed and built based on the analysis of degrees in two perpendicular directions of tool-workpiece system. In high speed milling of 2A12 aluminum alloy, the compensation method based on the modification of inertia effect was proposed and accurate cutting force coefficients...
High-speed milling (HSM) of thin-walled workpiece is widely used in the manufacturing of airframe components. The prediction of stable milling region plays an important role in the machining process. However, the prediction of its stable milling faces more difficulties because HSM is characterized with time-varying, nonlinear, multi-field coupling. In this paper, a dynamics model of HSM system is...
The productivity of high-speed machining is often limited by chatter rather than by other process constraints when machining with end mills. Therefore, as spindle speeds have increased, capability of using the stability lobes diagrams to increase metal removal rates and precisely deciding the optimum spindle speeds in the design stage has become more essential. In this research, an integrated FEM...
Chatter phenomenon often occurs during peripheral milling of thin-walled plate, which affect the quality of the finished part, the tool life and the spindle life. Therefore, it is necessary to avoid chatter with a suitable choice of cutting condition. Several stability models only emphasize the axial depth for chatter free machining. In this paper, it is shown that the radial depth is the same important...
Whether in traditional machining fields or modern flexible manufacturing systems, the workpiece-holding is the first issue of the machining operation to be confronted. To ensure the machining accuracy of specific dimensions, it is necessary to correctly determine the position of the workpiece related to the cutting tool and immobilize this correct position during entire machining operation. In this...
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