Identification of Geometric Errors with Cone Frustum Trajectories Measured by DBB in Five-axis Controlled Machine Tool with Tilting Table

Abstract

Geometric error between feed axes in five-axis controlled machine tool is one of factors that decrease the machining accuracy. And in five-axis controlled machine tool with tilting table, the influence of the geometric errors into the accuracy of cone frustum machining prescribed in NAS979 depends on conditions that are the location, apex angle, tilt angle or diameter of the workpiece. In this paper, we suggest a method to identify the geometric errors with the motion trajectories of cone frustum machining measured by double ball bar device in some conditions.