The influence of CNC machining service position error on machining accuracy. Position error refers to the degree of change or deviation of the actual position, axis or symmetry plane of the processed part relative to its ideal position, such as perpendicularity, position, symmetry, etc. The position error in CNC machine tool processing usually refers to the dead zone error.
The main reason for the position error is the processing error caused by the clearance and elastic deformation generated by the transmission during the processing of the machine tool parts, and the position error caused by the friction force that the tool head needs to overcome during the processing. In open-loop systems, position accuracy is greatly affected, while in closed-loop servo systems, position accuracy mainly depends on displacement detection.