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为解决高速精密滚动轴承圆柱滚子微小动不平衡量检测中,传统压电传感器测量振动时因寄生质量与附加刚度导致的测试精度较低、测试灵敏度低等问题,介绍了自主设计的基于激光测距传感器的非接触式超微圆柱滚子动平衡测试系统,阐述了基于三角法的激光测距传感器工作原理,采用激光脉冲计数法高精度测量转子转速,并对超微滚子动不平衡量进行了检测分析。通过试验验证了所设计系统在测量微米量级微小振幅时的有效性,确保了对于微小动不平衡量提取的可靠性与准确性。
In order to solve the problems of the small dynamic unbalance detection of the cylindrical roller with high speed and precision rolling, the traditional piezoelectric sensors measure the vibration due to the low accuracy and the low sensitivity caused by the parasitic mass and the additional stiffness, and introduce the self-designed laser ranging Sensor non-contact ultra-cylindrical roller dynamic balance test system, described based on trigonometric laser ranging sensor working principle, the use of laser pulse counting method to measure the rotor speed, and ultra-fine roller dynamic unbalance carried out Test analysis. The validity of the designed system in measuring small amplitude of micron order is verified through experiments, which ensures the reliability and accuracy of the extraction of the small unbalance.