Decision of target shape position and posture in machine simulator corresponding to actual workpiece

Abstract

Multi-tasking machine tools have been increasing to shorten production time and improve productivity. It is indispensable for the operator of such machine tools to avoid collisions among the machine structures. In order to solve this problem, machine simulator is widely used before machining operations. In a commercial machine simulator, however, unexpected collisions often occur when the setup of a workpiece or a jig differs from the 3D models created in advance. Therefore, this study proposes a machine simulator utilizing 3D models created by measuring the shapes and positions of the workpiece and jig on the machine tools. In case the workpiece differs from the assumed one, it is needed to determine the suitable position and posture of target shape based on the obtained workpiece. As a result, this study deals with a method which determines the position and posture of target shape using the workpiece obtained by on-machine measurement.