抄録
5-axis machining centers with three linear axes and two rotary axes have been developed to produce mechanical parts and molds with complicated shape. However, the accuracy of 5-axis machining center is lower than the 3-axis machining center because of the complexity of the mechanism. There are no methods to evaluate geometric deviations. The purpose of this study is to propose a systematic method to evaluate the geometric deviations in 5-axis machining centers and is to systematize the testing and evaluating methods of the 5-axis machining centers.