Abstract
Volumetric positional accuracy constitutes a large portion of the total machine tool error during machining. In order to improve machine tool accuracy cost-effectively, machine tool geometric errors have to be characterized and predicted for error compensation. By synthesizing the machine’s parametric errors such as linear positioning errors, roll, pitch and yaw etc., an expression for the volumetric errors in the multi-axis machine tool is developed.
Cuvinte cheie
CNC machine tool accuracy
Geometrical errors
Error modeling
Error prediction
homogeneous transformation matrix