【作者】 王培功；

【导师】 彭伟； 翁泽宇；

【作者基本信息】 浙江工业大学 ， 机械制造及自动化， 2005， 硕士

【摘要】 进给传动部件的动态特性的好坏不但直接影响到一台机床的工作性能和加工精度,而且对进给伺服系统的伺服性能的影响也很大。往往由于在设计阶段没有很好地考虑机械传动部件动态特性,结果使进给伺服系统的伺服性能受到影响,使位置调节也增加了难度。本论文的研究工作是在浙江省科技厅重大招标项目“大型高效数控模具加工机床关键技术研究”(编号:2002C11024)的资助下完成的。本文给出了数控机床进给传动系统的一种多自由度动力学建模方法。并以XK717型数控为例,在只考虑进给方向动态特性的前提下建立了其进给传动系统的多自由度动力学模型,进而对进给传动系统的动态特性进行了分析,给出来各设计变量对动态特性的影响规律。在动力学分析的基础上又建立了进给传动系统的动态优化数学模型,并进行了优化设计,得到了具有较好动态特性的设计方案。全文内容分为五章: 第一章:介绍了进给伺服系统国内外发展现状,以及本课题的背景、目的及意义。 第二章:给出了数控铣床进给传动系统的一种多自由度建模方法。 第三章:借助第二章建立多自由度动力学模型对所设计的XK717数控铣床的进给传动系统进行了动态分析。更多还原

【Abstract】 The feeding servo system is a key part of Numerical Control Machine Tool. The dynamic characters of feeding transmission parts not only directly affect working capability and machining precision of a machining tool, but also influence orientation precision of feeding system. In addition, mechanical design of machine transmission parts will also affect servo capability of feeding servo system greatly. Modern numerical control machine tool trends toward to high speed, high efficiency and high precision. The designing requirement for machine tool feeding transmission parts has been more and more high. It is usually because that the dynamical characters of machine transmission parts is not taken into account in the phase of designing, servo capability is influenced.In this paper a kind of multi-freedom dynamic modeling method of numerical control machine tool feeding transmission system is introduced. By the example of XK717 numerical control milling machine, inconsidering only of dynamical characters in feeding direction, a kind of multi-freedom degree dynamics model about feeding transmission system is builded, and dynamical characters of feeding transmission system is analyzed. Thus, the dynamical capability can be predicted in the course of designing. At the same time, the influence rule of all kinds of design variable parameters to dynamical capability is given. In addition, mathematical model of dynamic optimizing for feeding transmission system is established on the base of dynamics analysis, and is optimised to improve dynamical characters of the plan.The content of the paper is debided into five chapters:Chap1: Introduce the status of the development of feeding servo system at home and abroad, as well as the background, the aim and the meaning of the subject.Chap2: Recommend a kind of multi-freedom degree dynamic modeling method for feeding transmission system of numerical control milling machine.Chap3: Give a dynamics analysis to the XK717 numerical control milling machine by the help of the multi-freedom degree dynamics model builded in second chapter.Chap4: Based on analysis, set up multi-aim dynamical optimizing math model aiming at mode flexibility of XK717 numerical control milling machine, at the same time, make an optimizing design.更多还原