The Static/Dynamic/Thermal Characteristics Analysis And Topology Optimization Of The GSLM3308Machine Tool Spindle Box

Currently, the growing demand for large size CNC gantry machining centers in the fieldof machine manufacturing, molds, aerospace, nuclear energy, ships, automobile, wind power,metallurgy and other industrial areas, its technical performance and function parameters arerequired to higher requirements. As one of the most important component parts of large sizeCNC gantry machining center, the integrated performance of machine tool spindle boxdirectly affects the machining precision and quality. Therefore, it’s necessary to analyse thestatic/dynamic/thermal characteristics and topology optimization for machine tool spindlebox by using the finite element method. The method which used in the paper also can be usedto analyze the performance of other parts and entire machine, which provide a technicalsupport for improving the overall performance of machine.Based on the finite element design method, the paper focus on analysis and study theGSLM3308CNC tool spindle box of Gold Sun Machinery&Equipment Co., Ltd, the mainworks are summarized as follows:(1) According to the CAD drawings that provided by Gold Sun Machinery&EquipmentCo., Ltd, the3D modeling software Pro/E is used to build the entity models of spindle box,and getting the finite element model by HyperMesh.(2) The static characteristics of spindle box are analysed by using finite elementsoftware ANSYS, the stress and deformation of model is obtained. The results show thatthe intensity of spindle box is better, it has too much potential to resist destruction, whichprovides a theoretical basis for the topology optimization.(3) Using ANSYS to analyze the modal of spindle box, the1st to12th naturalfrequency and modes are calculated. The results show that the first modes natural frequency islower,which can meet the needs of low-speed machining. However, the difference ofnatural frequency from the first to sixth modes is large, and the dynamic characteristics shouldbe improved.(4) Then a thermal-structural coupling analysis was used for the spindle box by ANSYS,and gains the heat stress and deformation, analyzing the impact of the thermal load and staticload on spindle box, which providing a basis for thermal error compensation.(5) Finally, using the software OptiStruct to topology optimization the structure of thespindle box, reducing the weight of the spindle box with the premise of satisfy processingperformance, get the goals of lightweight design.