【作者】 熊荣；

【导师】 王煜；

【作者基本信息】 哈尔滨工业大学 ， 控制科学与工程， 2010， 硕士

【摘要】 随着半导体封装技术的不断发展,开发高精度、高效率、高可靠性的引线键合机变得越来越重要。本文从机械结构的角度分析,主要研究影响引线键合机的一个主要因素——结合面的动态特性。机械结合面作为机械系统中一种固有的结构形式,由于它在外加载荷的作用下表现出既有弹性又有阻尼的复杂动力学特性,对机械系统整体的动态性能产生显著的影响,所以结合面对机构整体动态性能有着关键的影响。本文结合目前国内外研究现状,针对机械结构中结合面的特点,对典型的固定结合面动态特性进行研究。在充分考虑了构成结合面的子结构之间相对运动的基础上,本文建立了结合面有限单元模型。与目前结合面的研究成果相比,该模型考虑了各自由度之间的耦合关系,能更准确地反映结合面的动力学特性。基于结合面的动力学模型,提出了动力学参数辨识的方法;运用有限元分析与实验模态分析相结合的方法测试结构的关键频率,有力证明了本文所建立的固定结合面动力学模型的有效性和模型参数识别方法的准确性。为进一步的结构优化提供参考。更多还原

【Abstract】 With the development of wire bonding technology, the invention and innovation of high-precision, high-efficiency and high-reliability wire bonder is an imperative requirement for packaging manufacturing. From the point of view of mechanical structure, this thesis focuses on an important factor----the dynamic characteristics of the joint surface.Mechanical joints are natural structure of all mechanical systems. When loaded with force, it behaves complex dynamical characteristic with damping and elasticity and affects so much dynamical characteristic of mechanical systems, so joints affect dynamical characteristic of machine tools very much.Upon the analysis of the current research development at home and abroad, this thesis has studied the dynamic characteristics of a typical joint surface. This research has fully considered the relative movement state of the sub-structure, established a finite element model of the joint surface. Compared with the recent research achievements of the joint surface, the coupling relationship between the various degrees of freedom is considered in this modal, which can reflect the dynamics of joint surface more accurately. According to the dynamic model, a new parameter identification method is proposed to testing the key frequency of the joint surface with the finite element analysis and experimental modal analysis method. The result is a strong proof of the validity of dynamic model of the fixed joint surface and the accuracy of model parameter identification methods, which is a preparation for the further structural optimization.更多还原