Method for monitoring abrasion of screw on numerical control machine tool by using mechanical position coordinates

The invention relates to the technical field of industrial data acquisition and analysis, in particular to a method for monitoring the abrasion of a screw on a numerical control machine tool by usingmechanical position coordinates. The method comprises the following specific steps of acquiring the position coordinates of the machine tool at the X axis, the Y axis and the Z axis of a mechanical coordinate system in a real-time manner, and automatically determining the frequency acquired in a real-time manner according to actual requirements; calculating slip frequencies of all position pointsin the whole travel, taking the zero of the mechanical coordinate system as an inherent zero position of the machine tool, and enabling a nut seat to move repeatedly within the screw travel range to form a plurality of repeated trajectories; and counting the repeated frequencies of the trajectories on the coordinate points of all parts in the screw travel, and taking a screw coordinate value as ahorizontal axis and the fre