摘要
本技術報告是評估一種新的內孔搪磨方法 – 徑向輔助振動搪磨；即設計一中空金屬圓柱管在其上貼覆壓電圓殼片，以此作為可轉換搪磨插件並套用於研磨機座；將鑽孔加工後的工件進行二次精細研磨，以提高尺寸精度、真圓度與圓筒度等。 操作方式是將壓電圓殼片貼覆於中空金屬圓柱管末夾持端之前，在壓電圓殼片靠中空金屬管末及中空金屬管前後作邊界束缚，利用其第一半波模態進行加電壓後的簡諧振動，在最大振幅處貼覆研磨材進行研磨。分析及驗證手法是將相關的增大振幅的幾何設計組合列出，藉由ANSYS的簡諧振動，模擬出最理想狀態，再利用光纖干涉儀偵測、振動控制器轉換後，在示波器上顯現頻率及電壓後再運算出振幅。記錄並利用統計數據分析方法找出最佳的組合。分析及驗證後得到兩個結論：在定量方面：最佳組合的模擬值與實驗值之間約為10:1的落差，其原因主要為實驗組的邊界束缚不完全。在定性方面：金屬管壁、壓電殼厚度對壓電殼強迫振動有顯著的影響；管壁薄、厚度小較好。頻率和位移的再現性及再生性是一致的。
並列摘要
The purpose of this technical report was to evaluate a new honing mechanism - radial forced vibration, which is different from the commonly used axial forced vibration in industrial applications. Design a pluggable piezoelectric honing tube by a hollow cylindrical metal tube with open piezoelectric shells bounded on the surface. Take this honing tube and connect with XYZ positioning stage to do fine polishing inside the long tubes so that improving surface roughness and dimension accuracy. To achieve this specific honing mechanism, perfect boundary constraints on tube and shells are necessary to provide. And then, attach abrasive cloth on the maximum displacement position which is caused by first half wave mode harmonic vibration of hollow cylindrical metal tube induced by piezoelectric forced vibration. Analysis and verification methods by using Timoshenko beam theory, ANSYS simulation, and statistical skill are used to find out various design conditions. From the, the best performance parameters are chosen to carry out experiment. Experiment results show two conclusive observations: 1). the ratio between analysis and experiment data was 10:1 since boundary constraints are sensitive to displacement variance; 2.) reduction of the wall thickness of metal tube and piezoelectric shells is beneficial to get better vibration quality of experiment tube and shells. The repeatability and reproducibility of frequency and displacement was consistent.
參考文獻
延伸閱讀
- 洪麗棻（2014）。萬能圓筒CNC磨床機之疲勞分析與優化設計〔碩士論文，國立虎尾科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0028-2708201423383900
- 徐嘉駿（2009）。液靜壓錐形軸承之設計分析〔碩士論文，中原大學〕。華藝線上圖書館。https://doi.org/10.6840/CYCU.2009.00894
- 陳詩涵（2021）。液靜壓主軸應用於皮帶驅動式磨床之設計與性能分析〔碩士論文，國立清華大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0016-2412202116194663
- 丘國鋒（2005）。Analysis and Design of a Piezoelectric Actuator〔碩士論文，國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2005.02508
- 李奕康（2019）。Analysis of a Slender U-shaped Piezoelectric Energy Harvester〔碩士論文，國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU201900016