摘要
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。
Abstract
In order to enhance the machine tool headstock’s comprehensive performance of static, dynamic, thermal, it must have good structure. The finite element model of a machine tool headstock was established in CAE software ANSYS, then its thermal-mechanical coupling analysis and modal analysis were conducted. The multi-objective orthogonal optimization design for headstock was carried on through taking the headstock’s mass, the maximum coupling stress, the maximum coupling deformation, the fist-step natural frequency as objective functions, the length, the width and the height of headstock’s main body as design variables. The best solution of optimization design was obtained by using grey relational analysis method, which made headstock’s mass only increasing 2.585%, the maximum thermal-mechanical coupling stress reducing 9.817%, the maximum thermal-mechanical coupling deformation reducing 16.393%, and the first-step natural frequency enhancing 8.634%. Studies have shown that the orthogonal experimental method and grey relational analysis have high engineering practicability.
关键词
机床主轴箱 /
热——力耦合分析 /
模态分析 /
正交试验法 /
灰色关联分析
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Key words
Machine tool headstock /
Thermal-mechanical coupling analysis /
Modal analysis /
Orthogonal experimental method /
Grey relational analysis
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刘世豪;叶文华;陈蔚芳;唐敦兵;肖利利.
基于正交试验法和灰色关联的机床主轴箱优化设计[J]. 振动与冲击, 2011, 30(7): 127-132
LIU Shi-hao;YE Wen-hua;CHEN Wei-fang;Tang Dun-bing;XIAO Li-li.
Optimization design for headstock of machine tool based on orthogonal experimental method and grey relational analysis[J]. Journal of Vibration and Shock, 2011, 30(7): 127-132
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脚注
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