4 Method for measuring geometric errors of 4-axis machine tools

摘要

Disclosed is a method of measuring geometric error of a four-axis machine tool. Geometric error measurement method of a four-axis machine tool according to an embodiment of the present invention comprises the reference coordinate system configuration step, the error definition step, the reference ball coordinate calculation process and measurement unit coordinate calculation process, the ideal encoder value calculation process and the encoder value according to the error amount A first actual step of calculating an actual encoder value of the first reference ball and the second reference ball by performing a calculation process and an actual encoder value calculation process, respectively, for the first reference ball and the second reference ball. And an error separation step of separating a plurality of error components from an actual encoder value for the first reference ball and the second reference ball calculated from the encoder value calculating step, the second actual encoder value calculating step, and the actual encoder value calculating step. .