For the problems of vibration

cutter back-off and so on when cutting titanium alloy thin-walled parts because of its low rigidity

research by filling polyurethane foam to improve the rigidity of titanium alloy thin-walled structure was conducted so as to realize the related process theory and key technology of effectively and stable cutting. Milling experiments with polyurethane foam reinforcement were designed and conducted compared with those without polyurethane foam reinforcement at the same condition. Vibrational acceleration time-domain signals in the milling process were analyzed and compared as well as machined surface quality and part deflection. And the signals in frequency domain obtained by Fast Fourier Transform (FFT) with MATLAB software were also analyzed and compared. Finally

the experiment results show that polyurethane foam reinforcement can significantly improve cutting stability

obtain better surface quality and reduce part deformation.