论文部分内容阅读
在采用Pro/Engineer软件建立大型床身三维几何模型的基础上,运用Pro/Mechanica模块对该模型进行了热变形有限元分析,获得了热平衡状态下的床身温度场分布情况以及床身沿Y、Z方向的热变形量。依据分析结果,对床身的内部结构进行优化并增添外部冷却装置,然后再次进行热变形有限元分析和效果验证。在以上研究的基础上,进行了床身温升与热变形实验。研究结果表明,有限元分析值与检测值一致性较佳,经过优化设计的床身热变形量明显减小,既有效提升了工作效率,又降低了生产成本,使机床精度进一步提升。
On the basis of using Pro / Engineer software to build the three-dimensional model of large-scale bed, the model was analyzed by finite element method using Pro / Mechanica module. The distribution of bed temperature field along the Y , Z direction of the thermal deformation. Based on the analysis results, the internal structure of the bed body is optimized and an external cooling device is added, and then the finite element analysis and effect verification of the hot deformation are carried out again. Based on the above research, the bed temperature rise and thermal deformation experiments were carried out. The results show that the finite element analysis is in good agreement with the measured value, and the amount of thermal deformation after the optimal design is obviously reduced. This not only effectively improves the working efficiency but also reduces the production cost and further improves the machine precision.