Research On Ultrasonic Vibration Deep-hole Lapping Mechanism And Surface Processing Quality Of Titanium Alloy

Titanium alloy is widely used in various fields because of its fine physicochemical properties. However, there is a difficult problem that how to grind it effectively, especially finish grinding and the super finish grinding at present. Ultrasonic vibration machining technology is a new type technology which ultrasonic vibration is applied to finish machining and the super finish machining and has some fine superiority in machining ultra-hard material, composite material and difficult-to-cut material. Therefore, it is a new way for difficult-to-cut material to deep-hole finish machine by applying ultrasonic vibration machining technology to deep-hole lapping.The difficult-to-cut material titanium alloy was taken as subject of study, and systemic study have been down for ultrasonic vibration deep-hole lapping mechanism and surface processing quality. Firstly, based on the analysis of deep-hole finish machining of titanium alloy, we presented ultrasonic vibration deep-hole lapping and designed ultrasonic vibration deep-hole lapping device. Secondly, according to comparing common lapping with ultrasonic vibration lapping, we researched ultrasonic vibration deep-hole lapping mechanism of titanium alloy and material removal rate characteristic by experiments. Finally, based on the surface generating mechanism of ultrasonic vibration lapping, the surface processing quality of titanium alloy was studied, and the effects of processing methods and lapping parameter on surface processing quality was researched from two aspects:surface topography characteristics and surface roughness characteristics.The research results are help to reveal the ultrasonic vibration deep-hole lapping mechanism of difficult-to-cut material titanium alloy, develop the new lapping technology of titanium alloy, and further promote the applications of difficult-to-cut material.