Abstract：For the milling with thin-walled structure, the effect of interaction between workpiece and tool and the position depended stiffness of workpiece can’t be ignored. It is a challenge work to determine the stability lobes. In this thesis, the model of the milling force and chip thickness is derived and then the governing equations of motion of the dynamic system are presented. A time-domain simulation isused to investigate the stability and three dimensions stability surface are obtained in the space of spindle speed, cutting position, and axial depth of cut. The effects of modal on the stability of milling processes are position and spindle speed depended are discussed and the position dependent mechanism of loss of stability are pointed.
[1] Tobias S A, Fishwick W. The chatter of lathe tools under other cutting conditions[J]. Transactions of the ASME, 1958, 80: 1079-1088.
[2] Tobias S A, Fishwick W. Theory of regenerative machine tool chatter[J]. The Engineer, 1958,205.
[3] Sridhar R, Hohn R E, Long G W. A stability algorithm for the general milling process[J]. ASME Journal of Engineering for Industry, 1968, 90: 330-334.
[4]Insperger T, Stépán G. Semi-discretization method for delayed systems[J]. International Journal of Numerical Methods in Engineering, 2002, 55: 503-518.
[5]丁烨. 铣削动力学-稳定性分析方法与应用[D].上海：上海交通大学,2011.
[6]Adetoro O B. Numerical and experimental investigation for stability lobes prediction in thin wall machining[J]. Engineering Letters, 2009, 17(4):
[7]Bravo U, Altuzarra O, Lopez deLacalle L N, et al.Stability limits of milling considering the flexibility of the workpiece and the machine[J]. International Journal of Machine Tools and Manufacture,2005,45(15): 1669-1680.
[8] Thevenot V, Arnaud L, Dessein G. Influence of material removal on dynamic behavior of thin walled structure in peripheral milling[J]. Machining Science and Technology, 2006,10(3): 275-287.
[9]Mane I, Gagnol V, Bouzgarrou B C, et al.Stability-based spindle speed control during flexible workpiece high-speed milling[J]. International Journal of Machine Tools & Manufacture, 2008,48(2) :184-194.
[10]Tang A, Liu Z. Three-dimensional stability lobe and maximum material removal rate in end milling of thin-walled plate[J].The International Journal of Advanced Manufacturing, 2009,43(1/2):33-39.
