基于正交试验法和灰色关联的机床主轴箱优化设计

为了提高机床主轴箱的静、动、热态综合性能，主轴箱必须具备良好的结构特性。在CAE软件ANSYS中建立某机床主轴箱的有限元模型，然后分别进行热——力耦合分析和模态分析，以主轴箱的质量、最大耦合应力、最大耦合变形、一阶固有频率为目标函数，主体部分的长度、宽度、高度为设计变量进行了多目标正交优化设计。利用灰色关联分析法获得了优化设计的最佳解，使主轴箱在质量仅增加2.585%的情况下，最大热——力耦合应力降低9.817%，最大热——力耦合变形减小16.393%，并且一阶固有频率提高8.634%。研究表明，正交试验法和灰色关联分析法具有较高的工程实用性。

Optimization design for headstock of machine tool based on orthogonal experimental method and grey relational analysis

In order to enhance a machine tool headstock's comprehensive performances including static,dynamic and thermal ones,it must have good structure.The finite element model of a machine tool headstock was established with CAE software ANSYS,then its thermal-mechanical coupling analysis and modal analysis were conducted.The multi-objective orthogonal optimization design for the headstock was carried out taking the headstock's mass,the maximum coupling stress,the maximum coupling deformation,the fist-order natura...