FAST OPTIMIZATION METHOD FOR GEOMETRIC ERROR COMPENSATION DATA OF TRANSLATIONAL AXIS OF FIVE-AXIS COMPUTER NUMERICAL CONTROL MACHINE TOOL

A fast optimization method for geometric error compensation data of a translational axis of a five-axis computer numerical control machine tool, being capable of enabling the number of times of geometric error detection of the translational axis based on a laser interferometer to be reduced by more than half, having better operability, being capable of implementing optimized compensation by using an existing compensation value, and having high compensation quality. The method comprises the steps of: (1) establishing a spatial positioning error model; (2) establishing an error database; (3) constructing a spatial error compensation table; (4) establishing a compensation data optimization model, and forming an optimization model for three face diagonals and one body diagonal in a linkage mode of the translational axis; (5) completing iterative optimization and selection of correction coefficients; (6) completing compensation for geometric errors of the five-axis computer numerical control machine tool on the ba