Control Scheme for a Five-Axis Machine Tool Based on Coordinate Transformation

Abstract

This paper presents a servo control scheme for control of the motion of a five-axis machine tool. In the proposed scheme, control of the five-axis system is operated with regard to the workpiece-coordinate basis, in which the relative motion between the tool and the workpiece is described. In practice, the available feedback signals are the positions along the driving axes that are defined in the drive-coordinate basis. Accordingly, the proposed five-axis servo controller is constructed based on the coordinate transformation between the workpiece-coordinate and the drive-coordinate bases.