FEA And Topology Optimization For The Basic Components Of High-speed Precision CNC Vertical Machining Center

With the rapid development of high-speed machining technology, CNC machiningcenteras the critical equipment of the mechanical processing methods, like car, milling,drilling, boring and so on,has already got the trend of high speed, high precision, highefficiency, systematic, complex, intelligent, network high-performance and reconfigurable.The basic components are an important component of CNC machining tool. What’s more, thedesign quality of it will directly affect the accuracy of the workpiece. While for a long timepast, the basic components are designed just by the analogy and empirical motheds, withrough estimate for the analysis of static and dynamic characteristics or just a separate analysisfor a large component, thus, the dynamic characteristics and the structure can not beguaranteed, and even can not achieve the desired performance requirement. Therefore, wemust have an accurate forecast for the machining tool’s performance, in order to design areasonable machining tool, so it must be conducted the dynamic analysis for the machine tool.This thesis includes the following several respect mainly:(1) Do parameterized modeling of the CAD drawing, that Xintai provided, byusing thethree-dimensional mapping software pro/e. And then build the machine tool dynamic modelincluding the junction characteristics by using the finite element method, based on themachine tool junction equivalent integration theory.(2) Achieve integration with the junction characteristics of the machine tool in the finiteelement analysis software analysis, and static and dynamic characteristic analysis for themachine tool, research and analysis the impact of the junction’ parameter on the static anddynamic characteristic of the machine tool, and make evaluation for static and dynamiccharacteristic of the machine tool, to achieve the aim that predict static and dynamiccharacteristic in the design drawing stage.(3) Verifying the correctness of the analysis results by using the experimental data thatcome out from a special test equipment, which have provided the real date to validate staticand dynamic analysis, for the machine tool of static and model analysis, and analyzing thereasons for deviation between the result of simulation and the experiment, thus lay foundationfor virtual design of machine tool and similar machine tool model of finite element analysis.(4) Identify the weak link of the machine tool by dealing with the analysis results andexperimental date, and determine the main vibration shape.(5) Introduce the modern optimization theory and methods into the topology optimizatio-n for the weak link-column of the machine tool by using the finite element analysis software optistruct module in hyperworks, and compare the static and dynamic characteristic of theoptimized column and machining center.