Abstract
The motion accuracy evaluation method of five-axis machining centers is not fixed enough though their demand has increased now. The discussion about the ISO standard concerning the accuracy test method of five-axis machining centers started in 2006. In the discussion, the cone frustum cutting test in NAS979 is improved as five-axis simultaneous interpolation motion described in ISO10791-7 "Accuracy of a finished test piece", and similar test using a ball bar is also described in ISO10791-6 "Accuracy of interpolation motion test". These two standards are scheduled to be issued as International Standards in 2015. In this report, The evaluation methods and problems of interpolation motion accuracy test simulating the cone frustum cutting that described in ISO10791-6 are considered.
