Evaluation method of preload of ball screw

摘要

The preload deterioration evaluation method of the ball screw (4) is realized by the computer equipment (1).This method,According to the vibration signal related to the vibration of the ball (44) on the ball screw (4), the steps and steps of obtaining the vibration data entry in the time domain.The step of obtaining the vibration induction data entry in the frequency domain according to the vibration data in the time domain.The steps and steps of obtaining the vibration natural vector according to the vibration induction data entry in the frequency domain.Vibration natural vector,Perform the steps of preload evaluation according to the reference vibration vector and preload evaluation range.And a step of determining whether the ball screw (4) has preload degradation according to the result of preload evaluation.