高速静压内置式电主轴系统稳定性分析及优化

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (6) : 101-105.

论文

针对高效精密机床电主轴系统的高速化，讨论液体静压主轴系统失稳机理，并对高速静压内置式电主轴系统进行稳定性分析；提出基于遗传算法的电主轴系统稳定性优化方法。以系统稳定性评价指标为优化目标、电主轴系统轴向尺寸参数为设计变量，采用高效微型遗传算法实现电主轴系统稳定性优化。该方法既能高效解决增强轴系稳定性优化问题，又可避免复杂结构参数修改；通过某高速磨床静压内置式电主轴系统稳定性分析及优化对该方法进行验证。结果表明，稳定性分析及优化后系统稳定性得到明显提高。

作者信息 +

Analysis and optimization of stability characteristic of high-speed built-in motorized hydrostatic spindle system

With the high speed trend of the high precision machine tool spindle system, to study its stability in design process has become very important. Firstly, the instability mechanism of the hydrostatic spindle system was discussed and the stability characteristic of the high-speed built-in motorized hydrostatic spindle system was analyzed. Then, an optimization method for stability characteristic of the motorized spindle was suggested based on genetic algorithm. The objective was to maximize the stability evaluation index and the axial size parameters of the spindle system were selected as the design variables. The effective micro genetic algorithm was adopted. Eventually, higher stability was achieved. In the mean time, the modification of the parameters of complex structure was averted. As an example, the stability characteristic of a high-speed grinder motorized hydrostatic spindle system was analyzed and then optimized using this optimization method. The results indicated, the stability margin of the motorized spindle can be improved obviously by this method.

Author information +

文章历史 +

摘要

针对高效精密机床电主轴系统的高速化，讨论液体静压主轴系统失稳机理，并对高速静压内置式电主轴系统进行稳定性分析；提出基于遗传算法的电主轴系统稳定性优化方法。以系统稳定性评价指标为优化目标、电主轴系统轴向尺寸参数为设计变量，采用高效微型遗传算法实现电主轴系统稳定性优化。该方法既能高效解决增强轴系稳定性优化问题，又可避免复杂结构参数修改；通过某高速磨床静压内置式电主轴系统稳定性分析及优化对该方法进行验证。结果表明，稳定性分析及优化后系统稳定性得到明显提高。

Abstract

With the high speed trend of the high precision machine tool spindle system, to study its stability in design process has become very important. Firstly, the instability mechanism of the hydrostatic spindle system was discussed and the stability characteristic of the high-speed built-in motorized hydrostatic spindle system was analyzed. Then, an optimization method for stability characteristic of the motorized spindle was suggested based on genetic algorithm. The objective was to maximize the stability evaluation index and the axial size parameters of the spindle system were selected as the design variables. The effective micro genetic algorithm was adopted. Eventually, higher stability was achieved. In the mean time, the modification of the parameters of complex structure was averted. As an example, the stability characteristic of a high-speed grinder motorized hydrostatic spindle system was analyzed and then optimized using this optimization method. The results indicated, the stability margin of the motorized spindle can be improved obviously by this method.

导出引用

郭维祺，刘桂萍，毛文贵. 高速静压内置式电主轴系统稳定性分析及优化[J]. 振动与冲击, 2015, 34(6): 101-105

GUO Wei-qi，LIU Gui-ping，MAO Wen-gui. Analysis and optimization of stability characteristic of high-speed built-in motorized hydrostatic spindle system[J]. Journal of Vibration and Shock, 2015, 34(6): 101-105

参考文献

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