摘要
机床结合面特性对其整体性能具有很大影响,利用ANSYS软件分别对立式数控铣床AVCP1200H结合面刚性联接、柔性联接的有限元模型进行模态分析,然后通过整机模态试验验证两种有限元模型的分析吻合,并对试验误差产生的原因进行分析,提出了优化模型的建议,为该型机床动力学研究及数字化设计制造提供了参考。试验结果表明:结合面柔性联接的模态分析与锤击试验结果较为吻合,3阶以上的误差均在20%以内,证明结合面处的动态特性参数对机床性能有很大影响。
Since the joint surface properties of the machine tools influences the performance of the machine tools greatly,modal analysis of vertical milling machine tool AVCP1200H was carried out utilizing ANSYS based on the finite element models of rigid connection and flexible connection of the joints.Then the analyzing tests for two finite element models were verified to be identical through modal test to the ma-chine.In addition the reasons of test error occurred were analyzed and optimization for the model was sug-gested,which provided a reference for studying dynamics of the machine tools as well as digital design and manufacturing.The test results show that： the modal analysis for flexible connection of the joints was in good agreement with the hammering test results with 3 order more errors being within 20%,which acteristic parameters were proven to impact the performance of the machine signifucantly.
出处
《机械设计与制造》
北大核心
2012年第2期149-151,共3页
Machinery Design & Manufacture
基金
国家科技重大专项(2009ZX04014-036)
国家自然科学基金(51105207)
关键词
结合面
模态分析
动态特性
Joint
Modal analysis
Dynamic properties
