Analysis of the Influence of Time-Varying Rotational Speed on Aluminum Alloy Milling
Aluminum alloy parts are usually processed by milling,and the milling parameters have an important impact on the product quality.In this paper,a time-varying model of milling cutter speed is proposed to analyze the influence of time-var-ying of milling cutter on aluminum alloy milling.Firstly,the time-varying model of milling cutter speed is constructed by MATLAB programming.Then the time-varying speed is introduced into the 3D aluminum alloy milling model established by fi-nite element method.Finally,a three-dimensional model of aluminum alloy milling considering the time-varying of milling cutter speed is established,and the influence of the milling cutter's time-varying on aluminum alloy milling is analyzed.It is found that the time-varying of milling cutter speed will lead to a large dynamic change of the cutter's reaction torque and the maximum milling stress produced by the workpiece.Thus the stability of cutter speed should be ensured in the actual processing.