导　　师： 吴玉厚

学科专业： 080201

授予学位： 硕士

作　　者： ;

机构地区： 沈阳建筑大学

摘　　要： 工业技术的高速发展,要求轴承具有速度高速化、结构小型化、尺寸精密化、使用温度高温化等性质；对于高真空、防腐蚀等苛刻条件,也要求轴承能够胜任。为了改善普通轴承性能以提高其使用寿命,陶瓷轴承应运而生。陶瓷轴承与主轴相互配合作为新型主轴系统,可取代传统钢制电主轴,其优势在于降低了电主轴在高速旋转时产生的惯性力和离心力,提高了电主轴的旋转精度、稳定性及可靠性等。 本文对陶瓷材料的应用领域、陶瓷轴承的发展过程及国内外研究情况作了叙述。介绍了陶瓷材料在陶瓷轴承方面的使用及其发展前景。分析了陶瓷材料切削、磨削加工原理,对磨削陶瓷材料新方法及理论进行了阐述。 基于分子动力学原理,使用VC++编程语言构建了金刚石砂轮磨粒磨削氮化硅陶瓷材料的纳米级仿真模型；分析了金刚石磨粒磨削去除氮化硅陶瓷材料的加工过程及表面形成机理；得到了磨粒磨削速度、磨削深度对氮化硅原子在加工过程中的受力、动能、势能的影响结果。 介绍了加工陶瓷材料的方法,设计了陶瓷套圈加工工艺,详细介绍了陶瓷套圈磨削加工过程,为生产过程提供参考。 利用MK2710多功能磨床对陶瓷电主轴关键部件陶瓷轴承套圈内表面进行了正交磨削实验研究,得出磨削加工参数对陶瓷套圈内圆磨削粗糙度的影响；采用多元回归分析得到了加工参数对加工粗糙度的经验公式,经过验证,证明经验公式和回归系数是高度显著的。在磨削陶瓷材料过程中砂轮出现损伤,指出磨削液在高速磨削过程中的重要性,提出增强磨削液辅助作用的措施。 With the high-speed development of industrial technology, bearing,which has high speed, miniaturization of the structure, size precision, high using temperature properties and so on meets the demand of industry. Bearing should be capable of high vacuum, anti-corrosion and other harsh conditions. In order to improve the fatigue life by improving the high-speed bearing performance, ceramic bearings came into being. A new type of spindle system,which consists of ceramic spindle and ceramic bearings can replace the traditional steel electric spindle. The advantage lies in reducing the inertial force and centrifugal force that generated by the electric spindle at high rotation speed,and the electric spindle rotation accuracy, stability and reliability are improved. In this paper, the ceramic material application field is introduced.Domestic and foreign research situation of ceramic bearing are described. Ceramic bearing application and development prospect of ceramic material are introduced. Cutting and grinding processing principle of ceramic material are described. New grinding method and theory of the ceramic material are discussed. Based on the principle of molecular dynamics, nanoscale simulation model of silicon nitride ceramic material that grinded by the diamond grinding wheel abrasive is built through VC++language. The machining process and surface formation mechanism of silicon nitride ceramic material which grinded by diamond abrasive are analysed. The influence of force, kinetic energy and potential energy that generated by the abrasive grinding speed and grinding depth on silicon nitride atoms is obtained. In order to guide the production process, the ceramic ferrule processing technology is designed. The processing method of ceramic material is introduced.Ceramic ferrule grinding process is introduced carefully. Orthogonal grinding experiments of ceramic bearing rings that be the ceramic spindle key components are studied by MK2710multi-function CNC grinder. The influence of grinding parameters on ceramic ferrule inner circle roughness is obtained. The regression model of processing parameters on roughness is obtained by regression analysis.The regression model and regression coefficient are highly significant by validating. The wheel damage occurs in the process of grinding ceramic materials.In order to enhance the supporting role of the grinding fluid, measures are proposed.

关 键 词： 陶瓷轴承套圈 磨削加工 表面粗糙度 磨削建模仿真

分 类 号： [TG580.6]

领　　域： [金属学及工艺]