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立式加工中心Z向进给系统动态特性分析
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国家科技重大专项(2012ZX04010-011)


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    摘要:

    立式加工中心Z向进给系统动态特性对加工中心的加工精度、抗共振的可靠度影响较大。利用有限元方法对立式加工中心Z向进给系统进行了动态特性分析,探讨了融入结合面特性的进给系统动力学有限元模型的建立。通过模态分析和谐响应分析,得出了进给系统的固有频率和振动特性,通过试验验证了有限元分析结果的正确性。分析结果为铣削参数的合理选择和加工中心动态性能的提高提供了可靠的依据。

    Abstract:

    The machining accuracy and reliability of anti-resonance of machining center were largely affected by the dynamic characteristic of longitudinal feeding system in Z-direction of vertical machining center. The dynamic characteristic of longitudinal feeding system in Z-direction of vertical machining center was analyzed by using the Finite Element Method (FEM), and the research on the way of dynamic FEM modeling of the feeding system which integrated with the joint surface characteristics was conducted. By modal analysis and diapason response analysis, the free frequency and vibratory characteristic of the feeding system were gotten, and the correctness of FEM result was proved by experiment. Thus the analysis results provide the dependable basis for the intelligent selecting of milling parameters and increasing of dynamic performance of the machining center. 

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杨国维,袁军堂,汪振华,翁健光.立式加工中心Z向进给系统动态特性分析[J].机床与液压,2014,42(9):87-90.
.[J]. Machine Tool & Hydraulics,2014,42(9):87-90

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  • 在线发布日期: 2015-01-09
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