DZM140电主轴结构设计及性能研究

发布时间：2018-06-23 02:59

本文选题：电主轴 + 静动态特性　；参考：《武汉轻工大学》2015年硕士论文

【摘要】：电主轴作为高档机床的核心功能部件,其结构与性能的好坏直接决定了整机工作性能。故而,研究和分析电主轴单元结构、动静态特性和结构优化等关键问题,对于提高电主轴的性能具有重要意义。论文介绍了电主轴的工作原理、基本结构、关键技术问题;根据设计要求,确定了电主轴的关键结构参数,借助CAXA软件完成了电主轴详细结构设计,运用Solid Edge建模软件中完成了零件的几何建模和装配体建模;运用ANSYS有限元软件,对主轴系统进行了静、动态特性分析研究和结构优化。(1)依据电主轴的基本结构和设计要求,从结构形式、电机选型、主轴结构参数、轴承选型、润滑和冷却方式等关键问题进行方案设计和参数确定,获得了电主轴整体结构。(2)介绍Solid Edge中几何建模的方法,完成了电主轴全部零件的三维建模和整体装配建模,直观展示了电主轴的结构。(3)运用有限元方法,对主轴系统模型进行简化,在ANSYS软件中完成了主轴—轴承系统的静动态特性分析,分析了主轴的静刚度、固有频率和振型,验证了设计的可行性。(4)在主轴—轴承系统静动态特性分析的基础上,以减少主轴体积,提高主轴静动态性能为目标,运用ANSYS多目标优化功能,对主轴轴承间距、轴承与电机转子间距、悬伸量进行了优化,获得了优化结果,并进一步比较了主轴优化前后的静动态性能。
[Abstract]:As the core functional part of high-grade machine tool, the structure and performance of motorized spindle directly determine the working performance of the whole machine. Therefore, it is of great significance to study and analyze the structure, dynamic and static characteristics and structural optimization of the motorized spindle. This paper introduces the working principle, basic structure and key technical problems of the motorized spindle, determines the key structural parameters of the motorized spindle according to the design requirements, and completes the detailed structural design of the motorized spindle with the aid of CAXA software. The geometric modeling and assembly modeling of parts are completed by using solid Edge modeling software, and the static and dynamic characteristic analysis and structural optimization of spindle system are carried out by using ANSYS finite element software. (1) according to the basic structure and design requirements of motorized spindle, From the structural form, motor type selection, spindle structure parameter, bearing selection, lubrication and cooling mode and so on, the scheme design and parameter determination are carried out. (2) the geometric modeling method in solid Edge is introduced. The 3D modeling and integral assembly modeling of all the parts of the motorized spindle are completed, and the structure of the motorized spindle is displayed intuitively. (3) the model of the spindle system is simplified by using the finite element method. The static and dynamic characteristic analysis of the spindle bearing system is completed in ANSYS software. The static stiffness, natural frequency and vibration mode of the spindle are analyzed, and the feasibility of the design is verified. (4) on the basis of the static and dynamic characteristic analysis of the spindle bearing system, the static and dynamic characteristics of the spindle bearing system are analyzed. In order to reduce the volume of the spindle and improve the static and dynamic performance of the spindle, by using the multi-objective optimization function of ANSYS, the distance between the spindle bearing and the rotor of the motor and the overhang are optimized, and the optimized results are obtained. The static and dynamic performances of the spindle before and after optimization are further compared.
【学位授予单位】：武汉轻工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TG502.3

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