多軸制御超精密切削加工の高能率化に向けたセッティング誤差補正に基づく工具とワークの自動取付け

抄録

Highly integrated ultraprecision machining technology is required to create tiny and complicated shapes of optical parts with high accuracy. In multi-axis control ultraprecision machining, initial setting errors that could be generated while setting a cutting tool and a workpiece may have critical influence on the machining accuracy due to the miniaturization and complexity of objects to be machined. Though several methods that compensate the tool setting errors have been already proposed, the methods require time and effort to set or remove the workpiece manually on a machine tool. In addition, the workpiece setting errors have been ignored until now. Therefore, based on a novel setting errors compensation of tool and workpiece, this study aims at developing an automated setting operation using an industrial robot to avoid human factors and to improve the efficiency of ultraprecision machining. In the proposed setting operation, the setting errors of located tool and workpiece are estimated by using an on-machine measurement device and compensated with high accuracy by modifying NC data. From the experimental result, it is found that the novel setting errors compensation can contribute to realize a fully automated setting operation for high efficient ultraprecision machining.