摘要
本研究提出一套具備自適應預視插補的線上防碰撞偵測加工路徑模擬系統。在模擬加工時，同步對刀具與機台執行適應性的碰撞偵測，達到線上即時防碰撞偵測的目的。傳統多軸加工機常用於自由曲面的加工，但其加工路徑的正確性卻難以直觀地判斷，在電腦輔助製造規劃加工路徑時，如何避免因路徑規劃錯誤，導致材料的浪費與機台受損，減少不必要的損失，一直都是工業界重要的課題之一。目前加工流程大多數採用預先模擬的方式，在實際加工前，測試加工路徑並排除可能發生碰撞的路徑。本論文所發展的多軸碰撞偵測系統，由預視器規劃模擬加工時的速度變化，並且根據機台模型複雜度運算出可能的碰撞偵測效率。在模擬加工時，則根據加工路徑所需的時間長短，適應性的調整碰撞偵測的次數，目的在有限的加工時間內，進行較精細的碰撞偵測。本研究所提出之適應性預視插補的線上防碰撞偵測架構適用於所有的加工機台，透過本研究之成果，能夠大幅提升控制器的價值達到即時運動規劃與適應性碰撞偵測之目的。
並列摘要
This dissertation proposes a set of numerical control (NC) machining simulation system with adaptive look-ahead interpolator and on-line collision detection function. Adaptive collision detection between tool and machine can be executed synchronously to avoid interference during machining process. Traditional multi-axis machines are used to process free-form surfaces. However, how to check the machining path correct or not is still a challenge. In path planning, how to avoid the wrong path and result to the waste of materials and machine damage has become an important issues in the industry. Currently, most of planning use pre- processing simulation before actual machining to eliminate the wrong path that may collide. In this study, the efficiency of multi-axis collision detection system is developed based on computational complexity of a possible collision parts. Hence, during simulation, the number of collision detection is variable and depends on time interval of each path. This ensures that the most sophisticated collision detection can be done on the limited processing time. The NC simulation structure with adaptive look-ahead interpolator and on-line collision detection proposed in this study can be applied to all-kind of processing machines. Through the result of this study, the value of the controller can be greatly enhanced to achieve the purposes of real-time motion planning and adaptive collision detection.