动力伺服刀架齿轮传动系统ADAMS动力学仿真及可靠性灵敏度分析

发布时间：2018-06-13 09:13

本文选题：齿轮系统动力学 + 非线性振动　；参考：《东北大学》2011年硕士论文

【摘要】：高速加工能显著地提高生产率和降低生产成本,是一项非常有前景的先进制造技术。随着国家经济的快速发展,航空、航天、军工、电力、化工等重要工业部门对车削加工中心及车铣复合加工中心的需求正在飞速增长。数控刀架是夹持一种或多种刀具进行数控加工的重要功能部件。数控刀架的动态性能直接影响数控机床的切削性能和切削效率,体现了数控机床设计和制造技术的核心水平。而数控刀架的动态性能则很大程度上取决于刀架动力传动系统的动态特性。本课题是以某机床集团研制生产的某新型双动力伺服数控刀架的动力传动系统为研究对象,以提高动力传动系统的动态特性为研究目标,在综述了国内外有关齿轮动力学及灵敏度分析方面研究的发展和现状基础上,使用动力学分析软件ADAMS建立了单对齿轮动力学分析模型和整个齿轮传动系统动力学分析模型,对齿轮传动系统的动态特性进行了研究,仿真了齿轮传动的运动过程,并分析了非线性齿轮系统的响应,利用虚拟样机技术对多自由度非线性齿轮传动系统的振动特性进行求解；并将神经网络技术应用于可靠性灵敏度分析领域,充分利用神经网络的非线性映射功能、任意函数逼近功能等特性,较好的解决了可靠性研究中的一些难题。最后,由于本文中基本随机变量为混合变量,即基本随机变量的单位互不相同,可靠性灵敏度无可比性,因此在可靠性灵敏度理论的基础上对基本随机变量进行了无量纲化,得到可靠性对各个基本随机变量的影响程度的排序,为产品在设计阶段提供了理论参考,有着积极地现实意义和理论价值。
[Abstract]:High-speed machining can significantly increase productivity and reduce production costs, which is a promising advanced manufacturing technology. With the rapid development of national economy, the demand for turning machining center and turn-milling complex machining center in aviation, aerospace, military industry, electric power, chemical industry and so on is increasing rapidly. Numerical control tool holder is an important function part of clamping one or more cutting tools for NC machining. The dynamic performance of the NC tool holder directly affects the cutting performance and cutting efficiency of the NC machine tool, which embodies the core level of the NC machine tool design and manufacturing technology. The dynamic performance of the NC tool holder depends on the dynamic characteristics of the power transmission system to a great extent. The research object of this subject is the power transmission system of a new type of double power servo NC tool holder, which is developed and produced by a certain machine tool group, and the research goal is to improve the dynamic characteristics of the power transmission system. On the basis of summarizing the development and present situation of the research on gear dynamics and sensitivity analysis at home and abroad, the dynamics analysis model of single pair gear and the dynamic analysis model of the whole gear transmission system are established by using Adams. The dynamic characteristics of gear transmission system are studied, the motion process of gear transmission is simulated, and the response of nonlinear gear system is analyzed. The vibration characteristics of multi-degree-of-freedom nonlinear gear transmission system are solved by using virtual prototyping technology, and the neural network technology is applied to the field of reliability sensitivity analysis to make full use of the nonlinear mapping function of neural network. Some problems in reliability research are well solved by the function of arbitrary function approximation. Finally, because the basic random variable in this paper is a mixed variable, that is, the unit of the basic random variable is different, the reliability sensitivity is not comparable, so the basic random variable is dimensionless based on the reliability sensitivity theory. The ranking of the degree of influence of reliability on each basic random variable is obtained, which provides a theoretical reference for the design stage of the product, and has positive practical significance and theoretical value.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH132.41;TG659

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