本研究目的主要是針對門型工具機的主要結構件,包括橫樑、滑座、主軸、左右機身、機台與地基等主構件,以有限元素分析軟體(ANSYS)做撓性體分析,運用在撓性工具機的動力學分析與控制等應用領域上。這個方法是以相對座標系表示,來針對撓性體的變形作一個整體的靜態與動態描述。工具機結構乃是門型工具機的基本主支撐架構,本研究主要針對主構件對結構剛性的影響程度作分析。分析方法主要是以數值分析軟體MATLAB計算位移與時間的路徑函數,並且利用有限元素分析軟體ANSYS將物體作撓性化成為可變形體,再配合動態模擬分析軟體RecurDyn從事對門型工具機的加工路徑控制與分析,進而得到路徑控制的結果。本研究所探討的主要是機台本身因素與環境因素中之振動所造成的動態誤差;在分析結構部分則以橫樑、機身部份為撓性體,主要探討橫樑與機身的結構剛性。本研究因為所假設的條件與實際門型工具機作動的實際受力情形不同,為了分析結構剛性,所以撓性體部分主要以實心與挖空之結構模擬分析,探討在相同假設條件下兩者的結構剛性,並且以現代化電腦軟硬體來計算工具機三軸位移軌跡從事加工路徑的控制與規劃。
The main purpose of this investigation is using the FEM software to do the flexible body analysis for the door-type machine tools components. The analysis method of the flexible machine tools could be used in the dynamic analysis and control applications on the door-type machine tools. The goal of this research is to perform the structure and mechanism flexibility analysis to survey the rigidity effect to the Door-type machine tool structure. First of all, one can use MATLAB to calculate the path function. Secondly, ANSYS can be used to deform some main components of the machine tools. Finally, RecurDyn will be utilized to do the path planning and control of machine tools and obtain the path control results. This investigation mainly discussed the dynamic errors caused by the machine component factors and environmental factors (vibration). In the structural analysis part, we are treating the crossbeam, right column and left column parts as the flexible body. The structural rigidity is also discussed by the analysis of the crossbeam, right column and left column. In this research the assumed conditions cause some differences on the actual stress situation from the actual door-type machine tools. In order to analyze the structural rigidity, the flexible body part mainly divided by the solid and the hollow. It will use the computer hardware and software to calculate the three-axis displacement path of the door-type machine tools and perform analysis and simulation in the path control/planning processes.