齿轮测量仪器的动态设计方法及其应用

发布时间：2018-06-13 08:07

本文选题：齿轮 + 动态特性　；参考：《仪器仪表学报》2017年04期

【摘要】：为了解决目前齿轮量仪中由于动态性能不足而严重影响测量结果的稳定性、可靠性和精确性的问题,对齿轮测量仪器的动态设计方法展开研究,提出利用有限元分析与实验模态分析技术相结合的动态设计方法。首先,研究了动态分析的理论基础、有限元分析的基本步骤和实验模态分析的基本原理;接着,以某齿轮快速检测仪为例,对其进行了有限元分析与实验模态分析;然后,在该齿轮快速检测仪上进行测量实验,即采用不同精度的齿轮,在不同的速度下进行测试;最后,分析了测量实验中存在振动扰动以及测量过程中振动的变化情况。实验结果表明,有限元分析法可以在设计阶段有效的提高仪器的动态性能,从根本上提高仪器的动态性能指标。实验模态分析方法可以在仪器制造以后准确的获得仪器的实际动态性能指标,可以有效地进行最佳工作转速选择,进一步提升仪器的使用性能。通过测量实验,验证了有限元分析和实验模态分析的正确,为齿轮提高齿轮量仪的动态精度提供了一种方法,为量仪的合理使用提供了一条确实可行的途径。
[Abstract]:In order to solve the problem that the stability, reliability and accuracy of the measuring results are seriously affected by the lack of dynamic performance in the gear measuring instrument, the dynamic design method of the gear measuring instrument is studied. A dynamic design method combining finite element analysis and experimental modal analysis is proposed. Firstly, the theoretical basis of dynamic analysis, the basic steps of finite element analysis and the basic principle of experimental modal analysis are studied. The measurement experiment is carried out on the gear fast detecting instrument, that is, the gear with different precision is tested at different speeds. Finally, the vibration disturbance and the vibration variation in the measurement process are analyzed. The experimental results show that the finite element analysis method can effectively improve the dynamic performance of the instrument in the design stage, and improve the dynamic performance index of the instrument fundamentally. The experimental modal analysis method can accurately obtain the actual dynamic performance index of the instrument after the instrument is manufactured, can effectively select the best working speed, and further improve the performance of the instrument. The finite element analysis and the experimental modal analysis are proved to be correct through the measurement experiment, which provides a method for the gear to improve the dynamic precision of the gearmeter, and a feasible way for the reasonable use of the measuring instrument.
【作者单位】：北京工业大学北京市精密测控技术与仪器工程技术研究中心;河南科技大学机电工程学院;
【基金】：“高档数控机床与基础制造装备”科技重大专项(2013ZX04011-071)资助
【分类号】：TG86

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