運用可重組精密五軸工具機於多面鑽孔同心之研究

Study of Drilling Concentric Holes on Multi-Planes Using a Reconfigurable Precision Hybrid 5-Axis Machine Tool

鄭淵明(Yuan-Ming Cheng) ； 彭偉翔(Wei-Xiang Peng)

《機械技師學刊》 4卷4期 (2011/12) Pp. 54-60

https://doi.org/10.6208/JPME-2011-04-07

摘要

並聯式機構具有高剛性、高精密、低慣性與簡易機構的優點。本論文以平躺並聯式三軸運動平台（3-PRS）與CNC工具機成熟的連續路徑追蹤能力整合在一起，達到多自由度、高精度之複合式五軸工具機。在研究中探討機構因零件加工、工件定位、機構組裝所產生的靜態誤差，利用雷射位移計量測平台姿態，檢測上平板原點的偏差值與校正三軸接點的高度值，進而修正逆向運動學，以提升平台姿態精度值。最後，運用RHMT實際加工於多面同心鑚孔實驗，並用CMM檢測加工成果。

關鍵字

平行機構 ； 五自由度 ； 五軸 ； 校正 ； 誤差量測

並列摘要

The 5-axis machine centers integrate two mechanical models which are a 3-DOF parallel platform and a traditional CNC X-Y table. The machining centers are trended to be the reconfigurable precision hybrid machine tools (RHMT) to conduct the complexity and precision of future products. The forward kinematics, inverse kinematics and the singularity distribution of parallel mechanism are investigated. The positions of moving platform of parallel mechanism is measured by a laser displacement sensor and is calibrated by three heights of connect point. Inverse kinematics of this mechanism will be revised and precision of position of moving platform will be promoted. Finally, this paper makes an experiment of drilling concentric holes on multi-planes by using a RHMT and examines the cutting results by CMM machine.

並列關鍵字

Parallel Mechanism ； 5-DOF ； 5-axis ； Calibration ； Error measure