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针对精密机床主轴系统中存在的测量噪声干扰,提出处理该干扰的动态精度模型;为获得高的动态精度,发展了一种由静态测量获得组合特性的方法,并分析了材料本身及传感器的组合特性对动态精度的影响。研究结果表明,当主轴旋转时,组合特性给系统带来的主要是同频及其倍频干扰,这些倍频干扰占有较宽的频带,是影响系统动态特性的主要干扰源。结合实例完成了对材料本身及传感器的组合特性下的动态精度仿真计算,并与实验结果进行对比分析,从中找出影响系统动态精度的主要因素并提出解决办法。
Aiming at the measurement noise interference existing in the spindle system of precision machine tool, a dynamic precision model for dealing with the disturbance is proposed. In order to obtain high dynamic accuracy, a method of obtaining the combination characteristic from static measurement is developed. The combination of the material itself and the sensor Effect of characteristics on dynamic accuracy. The results show that when the spindle rotates, the combination of the characteristics of the system is mainly caused by the same frequency and its multiplier interference, which occupy a wide frequency band interference is the main source of interference system dynamics. The simulation of the dynamic accuracy under the combination of the material itself and the sensor is completed by the example. The comparison with the experimental results is conducted to find out the main factors affecting the system dynamic accuracy and propose the solution.