- 會議論文
線性滑軌系統結構振動模擬分析
The Simulations and Analyses of Structural Vibration for System of Linear Guideway Type
摘要
本研究主要借助於ANSYS workbench對循環式線性導軌(LGT)系統之剛性及結構振動行為進行探討，通過對模型進行模擬分析所求結果與相對應的理論推導所得到的結果進行對比驗證，從而驗證理論解的正確性。其分析包括其系統剛性以及滑塊之垂直(Vertical)、滾動(Rolling)及擺動(Pitching)之自然振動頻率(Natural vibration frequencies)。在進行導軌內滾柱剛性的模擬分析時，將模型簡化為兩個平板間放置一顆滾柱，然後取八分之一模型進行類比分析，中間部分的滾柱被分成三個部份：二端部為翹起部分，中間部分為一個圓柱。在進行循環式線性導軌(LGT)系統之結構振動行為模擬分析時，採用全尺寸建模，中間滾柱部分由彈簧取代。模擬結果顯示出，較高的彈簧剛度可使循環式線性導軌(LGT)系統具有較高的剛性，較高之自然振動頻率，從而驗證了理論分析所得結論之正確性。
並列摘要
This study investigated the solution of the rigidity and structural vibration for system of linear guideway type based on ANSYS workbench. By comparing the results derived from the simulation of the model and the corresponding theoretical results, the validity of the theoretical solution can be verified. The analysis includes the system rigidity and the natural vibration frequency in the direction of vertical slider (Vertical), rolling (Rolling) and swing (Pitching). During the simulation of the rollers' stiffness inside the rail, the model is simplified as a roller placed between two plates, then take one-eighth of the model to simulation. The middle part of the roller is divided into three parts: two end parts have the profile of tilt, and the middle part is a cylinder. Then, the structural vibration frequency for system of linear guideway type is carried out, the model is built according the true dimensions, what is more, the rollers are replaced by springs. Simulation results show that higher spring stiffness can enhance the rigidity of the system and make the recirculating rollers have a higher frequency of LGT, which proves the correctness of theoretical analysis conclusions.