【作者】 李继云；

【导师】 朱林；

【作者基本信息】 西安石油大学 ， 机械制造及其自动化， 2010， 硕士

【摘要】 钛合金材料由于具有优良的理化性能而使其在很多领域得到广泛应用,然而正是由于这些优良的性能造成了对其进行精密或超精密磨削加工的困难。超声振动加工技术是一种将超声振动用于精密或超精密加工的新技术,特别是在超硬材料、复合材料和难加工材料的加工方面显示出非常突出的优越性。因此,将超声振动加工技术应用于深孔研磨加工中,为难加工材料的深孔精加工开辟了一条新的途径。本课题以难加工材料钛合金为研究对象,研究钛合金超声振动深孔研磨机理及其表面加工质量。首先,本文在分析了钛合金深孔精加工的基础上,提出了超声振动深孔研磨的加工方法并研制出相应的加工装置。然后,通过普通研磨和超声振动研磨两种加工方法的比较,对钛合金超声振动深孔研磨的加工机理进行了研究,并且对其材料去除率特性进行了试验研究。最后,基于超声振动研磨表面形成机理,对钛合金超声振动研磨表面加工质量进行了研究,从表面形貌特征和表面粗糙度特性两个方面试验研究了不同加工方式和重要研磨参数对工件表面加工质量的影响规律。研究结果有助于揭示难加工材料钛合金超声振动深孔研磨加工机理,完善和发展钛合金材料磨削加工新技术,进一步推动难加工材料在工程实际中的应用。更多还原

【Abstract】 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.更多还原