基于虚拟仪器的主轴振动检测系统开发

Study of Vibration measurement system of machine spindle based on virtual instrument

机械设备加工过程中主轴产生的振动对产品的精度以及刀具的磨损和寿命等都有较大的影响,针对机床主轴在加工过程中的振动,利用数据采集卡、加速度传感器搭建了测量平台,利用labVIEW软件设计了振动测量系统,该系统通过频谱分析、低通滤波、加窗等过程,能够在线测量主轴在不同转速下的振动基本参数,实现机床主轴加工时运动情况在线测量。通过这些参数分析,可以间接为系统的定期维修和动态特性的研究提供依据。该测量系统开发成本和维护成本低,比使用传统仪器具有更好的经济性。

Vibration occurred during working of the machine can influence product precision,cut-ting-tool wear and lifetime.Therefore a vibration measuring system has been developed specially through adopting measuring platform built with DAQ,acceleration transducer by applying software labview,in which basic parameter concerning vibration under different rotating speed of the main spindle is measured on line through frequency analysis,lowpass filtering,windowing etc.So that the measurement on line for motion sit-uation of the spindle is achieved.Through the analysis of those parameters,a basis is provided for studying periodic maintenance and dynamic features of the system indirectly.For its low developing cost and low maintenance cost,the system＇s provided with better economy compared with traditional instrument.