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本文叙述了MQ6025A型万能工具磨床的激振试验及对结果的分析。在试验中应用了CHFZ—1型传递函数分析装置来测量和分析该机床在稳态正弦激振下的响应。应用了机械阻抗法和模态分析原理来识别机床的模态参数。找出机床结构的薄弱模态、薄弱模态部件及受迫振动振源。提出了改进机床动态性能的建议以便提高在该机床上加工的工件的精度及光洁度,以及消除工件上的振纹。
This article describes the MQ6025A universal tool grinder excitation test and analysis of the results. In the experiment, the CHFZ-1 transfer function analysis device was used to measure and analyze the machine’s response under steady state sinusoidal excitation. The mechanical impedance method and modal analysis principle are used to identify the modal parameters of the machine tool. Identify weak modalities, weak modal components and forced vibration sources of the machine tool structure. Proposals were made to improve the dynamic performance of the machine in order to improve the accuracy and smoothness of the workpieces machined on the machine and to eliminate the ripples on the workpieces.