113 多目的最適化手法による工作機械機体の最適設計(OS-3 最新工作機械・多軸複合加工)

概要

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The present trend of multi functional machine tools leads to the complicated thermal deformation and vibration characteristics, causing the energy to increase for improving them. The research and development of the machine tool consuming minute electric power is desired in view of global environmental conservation. The optimum design of rib structure of the machine tool is one of the effective methods to improve its characteristics without unnecessary energy consumption. With respect of the thermal deformation, static deformation and natural frequency of the column of machine tools with rib structure, this paper examined the optimum shape of a simplified rib structure column model by applying the multi-objective generic algorithm to FEM analytical results. The optimum design variable values for the thermal deformation were conflict with the values for the natural frequency of the 1st order mode of vibration ; nevertheless, the design variable values were obtained improving the thermal deformation, static deformation and natural frequency in comparison with those at the initial values.
2006-11-24