ERROR MODELING AND MEASUREMENT FOR THE ROTARY TABLE OF 5-AXIS MACHINE-TOOLS

Rotary tables are widely used with multi-axis machine tools as a means for providing rotational motions for the cutting tools on the three-a xis machine tools used for five-axis machining operations. in this pap er, we present a comprehensive procedure for the calibration of the ro tary table including: geometric error model; error compensation method for the CNC controller; error measurement method; and verification of the error model and compensation algorithm with experimental apparatu s. The methods der eloped were verified by various experiments, showin g the validity and effectiveness of the presented methods, indicating they can be used for multiaxis machine tools as a means of calibration and precision enhancement of the rotary table.