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| Study on Milling Performance of Titanium Alloy Thin-Walled Parts With Polyurethane Foam Reinforcement |
| LIU Chun1, SUN Jie1, LIU Kai1, CUI Yawen2, LU Laixiao1, YANG Bin1 |
(1. School of Mechanical Engineering, Shandong University, Ji’nan 250061, China;
2. AVIC Chengdu Aircraft Industrial (Group) Company Ltd., Chengdu 610092, China) |
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Abstract 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.
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2017, 
