R-Test Analysis Software for Error Calibration of Five-Axis Machine Tools - Application to a Five-Axis Machine Tool with Two Rotary Axes on the Tool Side -. - Soichi Ibaraki; Yu Nagai; Hisashi Otsubo; Yasutaka Sakai; Shigeki Morimoto; Yosuke Miyazaki (Int. J. Autom. Technol., 2015)