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| Experimental Study on Low-Frequency Vibration Drilling of Titanium Alloy/CFRP Laminate Structure |
| ZHANG Hui1 , LI Meiping1 , LI Haiwei1 , DU Jie1 , GUO Feiyan2 |
| (1. AVIC Shenyang Aircraft Industrial (Group) Co., Ltd., Shenyang 110034, China; 2. AVIC Manufacturing Technology Institute, Beijing 100024, China) |
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Abstract During drilling of Ti/CFRP stacks in traditional ways, damages and tool wear occur frequently. In this study, the parameters of low-frequency vibration (LFV) drilling were optimized to improve the drilling quality and tool life. The parameters of LFV drilling were optimized in two steps. Firstly, a group of optimal parameters were obtained by combing of different cutting parameters in orthogonal experiments. Then a small range of drilling parameters near the optimal parameters were selected and optimized again according to extra orthogonal experiments. By using the final optimized parameters, the validity of optimal parameters was verified by comparing of the traditional drilling results and the LFV drilling results. The results showed that the tool wear was improved distinctly when drilling with LFV method. Also, it helps to decrease cutting chip size while increasing hole quality and elongating tool life.
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2021, 
