大学毕设论文__精密机床进给系统的振动分析.doc

精密机床进给系统的振动分析 摘要 对于生产精密零部件的机床，进给系统的优良会决定加工零件的性能。本课题对精密机床的进给系统的研究，可以为机床进给机构的设计与生产提供一个参考依据。本论文对精密机床进给系统的研究中选取JCS-018型立式加工中心的进给机构为例展开建模、仿真、分析而得出结果，该机床所选用的进给驱动机构为滚珠丝杠副，滚珠丝杠副从目前使用上来看是当今使用得较为广泛的机械传动进给机构。 本文首先对机床的进给驱动系统及机床本体进行模型分析，在分析的基础上将机床结构部件进行简化，使得分析的模型简便可靠，然后运用三维建模软件SolidWorks建立起简化了的JCS-018型立式加工中心的整机，及主要研究的进给机构的三维实体模型，再通过SolidWorks软件与ADAMS软件之间的数据对接交换口，将该机床模型导入到ADAMS软件中，从而得到简化的立式加工中心的虚拟样机模型，作为本课题研究的精密机床进给系统的模型。 根据虚拟样机的多刚体运动学与动力学理论，对JCS-018型立式加工机床的模型进行运动学和动力学的仿真分析。从虚拟样机中的仿真分析，从中找到影响机床进给过程振动的最大因素，探讨影响振动的因素，从而得出在机床进给系统的设计与生产上应该注意的问题。 关键字：进给系统； 滚珠丝杠副； 虚拟样机； 仿真分析； 振动因素 Vibration analysis of precision machine feed systems ABSTRACT For the production of precision parts of the machine tool, feed system will determine the good performance of the parts. The research on the feed system of the precision machine can provide a reference for the design and production of the machine feed mechanism.. In this paper, the research of precision machine tool feed system selected feeding mechanism of JCS-018 vertical machining center for example started modeling, simulation, analysis and get the result, the machine feed system for ball screw pair, ball screw deputy from the use of perspective is now the widely used mechanical transmission feed mechanism. In this paper , first analysis of the machine feed drive system and the machine body model, in the analysis it is in the basis of the structure of the machine parts are simplified, makes the analysis of the model is simple and reliable, and then use the 3D Modeling Software Solidworks build simplified the JCS-018 vertical machining center machine, and mainly studies the feed mechanism, through the data between SolidWorks and ADAMS software docking port for exchange, the machine model is imported into ADAMS software, resulting in the virtual prototype model of simplified vertical machining center, as the research of precision machine tool feeding system model. According to the multi-body kinematics and dynamics theory of virtual prot