In order to deal with the precision comprehensive evaluation analysis of five-axis machine tools,a comprehensive evaluation method for assessing geometric and servo error of machine tools was proposed.Through collaborative motion of two translational axes and a rotary axis,the circular error test was carried out using ball bar.The errors attributing to the total error of machine tools were analyzed according to the established error analysis and evaluation models.The analysis results indicated that the geometric errors remain constant, but the servo errors increase with the increase of the feed and are dominant about 75% of the total error at a feed of 10 000 mm/min.The experimental results showed that the proposed error evaluation model and analysis results have high accuracy and provide a computation basis for error compensation of machine tools.
