5軸工作機械および複合加工機における工作物配置決定支援のための加工可能作業空間の導出

概要

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Decision of the workpiece setting is an important issue in process planning for both 5-axis and multi-tasking machine tools. However, it is difficult to decide the workpiece setting properly and a huge amount of time and effort is required for trial-and-error verifications of NC programs using a virtual machining simulation. Still, in the worst case, the workpiece re-setting is needed to complete machining operation. In order to reduce the trial-and-error verifications, it is important to decide the workpiece setting properly first. In this study, a machinable space derivation method to find the suitable workpiece setting position is proposed. For this purpose, the reachable space of cutting tool tip is calculated based on the relative motion between the cutting tool and the machine table. In the case of 5-axis control machining, the reachable space of cutting tool tip, which changes according to the tool posture, can be visualized. Then, the machinable space can be represented by overlaying the reachable spaces obtained for different tool postures. The machinable space derived is help full to decide the workpiece setting properly at the early stage in the process planning. In the case studies for both 5-axis and multi-tasking machine tools, it is verified that the workpiece setting is decided effectively to complete machining operation by referring the machinable space.
一般社団法人日本機械学会の論文