doiSerbia

Heat generation and side milling stability of titanium alloy

Li Hong-Tao (School of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin, China), zhaogang@hrbeu.edu.cn
Zhao Gang (School of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin, China)
Ji Ying-Xin (School of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin, China)
Zhang Yi-Chen (School of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin, China)

In this paper, the thermal generation and milling stability of titanium alloy during machining are investigated mainly. A new definition of processing behavior is given based on the principles of minimization, entity expression and combination, and a model of side milling behavior is constructed. Through a series of side milling orthogonal experiments on Ti-6Al-4V titanium alloy, the cutting forces under different process parameters are obtained. Further, the cutting force coefficients of the model is calculated by the complete average algorithm and the peak average algorithm, and the milling stability of the system is analyzed by a stability lobe diagram. The results show that the different cutting parameters have important influences on the milling stability of titanium alloy.

Keywords: titanium alloy, heat generation, milling stability, machining parameters, dynamic model