The linear axis of the machine tool needs to be online detected to provide the realtime feedback parameter information of the system operation,which can be used to infer and predict the performance of the machine tool.The use of inertial measurement units (IMUs) has considerable research value for online condition monitoring.A method based on spatial filter was proposed.The wear condition of the linear guide was determined by using IMU to detect the motion error,then the variation of the translational and angular error caused by the guide wear could be solved.The precision can reach 1.5 μm and 3.0 μrad respectively.Two motion trajectories error tracking methods were mainly elaborated.The first was to determine the guide position caused error motion.The second was to determine the root cause of nonlocal damage along each guide.These methods are beneficial to the optimization development of intelligent machine tools and provide a reliable theoretical basis for the precise control of machine tools.
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袁健男.机床线性轴与导轨局部和非局部磨损产生的根本原因分析[J].机床与液压,2021,49(6):174-179. YUAN Jiannan. Analysis on the Root Causes of Local and Nonlocal Wear of Linear Axis and Guide of Machine Tools[J]. Machine Tool & Hydraulics,2021,49(6):174-179