Abstract
This study proposes a new, efficient method to control the direction of the instantaneous cutting force xerted on a workpiece surface in continuous multi-axis controlled machining. During the finishing process for aerospace parts with a thin wall shape, workpieces with low rigidity are often deformed by the exerted cutting force. To reduce such machining errors, in the proposed method, the tool posture in each cutter location is modified gradually according to estimated results from model-based computer simulation of the instantaneous cutting force. To shorten calculation time, the developed prototype system introduced a new application of the ultra-parallel processing technology known as GPGPU. This technology showed good performance in a complicated NC programs generated by a commercial CAM system.
