發展整合工具機多體動力與控制模型之動態分析方法;Development of Dynamic Analysis Method for Multi - body Dynamics and Control Model of Integrated Machine Tool

[[abstract]]工具機加工性能不斷往高速化、高精度及低表面粗糙度發展。以往開發新型工具機，皆參考類似規格並利用過往經驗進行設計，由於新產品測試過程往往需要多次的實體機台測試，再由設計端進行調整才能得到預期性能，其開發過程耗時且耗費成本，因此本研究將整合多體動力學模型與控制器模型，建立工具機虛擬數位模型以分析整機動態特性。在實體工具機產品完成前即可進行動態測試，透過調整進給系統介面剛性值進行敏感度測試，用以研究各種參數對於性能影響，可提供設計端在進給系統挑選依據，並針對進給元件之預壓改變所導致不同摩擦力狀況進行模擬，預測參數改變後的機台運動軌跡精度。此數位模型除了可大幅縮短新產品開發的測試時程，更可提升設計品質。 The machining performance of machine tool is always growing to achieve the goal of high speed, high accuracy, and low surface roughness. In the past, a new product of machine tool was almost designed according to the similar specification and the past experience. The experiment and setup parameters of a new machine tool were repeatedly tested and modified so as to complete the predicted performance. The process of development always spends a lot of time and cost. Therefore, this study will integrate the multi-body dynamics model and control systems to establish a virtual digital model of machine tool. The technology will be utilized to analyze the dynamic performance of the machine tool before the manufacture of real product. The sensitivity test will be performed to discuss the dynamic performance among mechanic parameters through the modification of joint stiffness for the feed drive system. The different friction model caused by the preload of the feed drive system will be simulated to predict the path accuracy of machine tool during the machining movement. The digital model presented by this study not only substantially reduces test time of new product development, but also improves the quality of desig