Abstract
To explore the effect of vibration drilling on bit rigidity, the motion characteristics of the bit during vibration drilling were analyzed theoretically. According to the change of the minimum cutting thickness hmin, the bit rigidity theory was deduced, and the bit rigidity theory was verified by the drilling test of Carbon fiber reinforced polymer/aluminum alloy laminated structure. The experimental results show that; Compared with ordinary drilling, the machining accuracy of upper and lower aperture in vibration drilling is increased by 46.6% and 28.5% respectively, which makes the bit rigid and improves the stability and drilling accuracy.
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