木工機械設計與誤差補償

本研究完成一台木工成型機機台設計並針對其加工路徑做分析。在木工成型機的機台部分是由兩組伺服馬達所組成的龍門式平台來帶動Z 軸刀具進行加工，兩組伺服馬達帶動龍門式平台的Z 軸進行XY 方向移動，另外在龍門式平台的Z 軸方向裝設有一組線鋸機及一組鑽孔機，使得本機台具有切割及鑽孔的能力。在切割加工的路徑分析方面，切割作業的進行會隨著機台震動、刀具磨耗與外力干擾等參數的不確定性，使得預設路徑產生額外的輪廓誤差進而造成加工精度的降低。為了解決多軸運動間的不協調而導致運動路徑與原先設定的路徑間之誤差，本研究採用交叉耦合控制來對雙軸作補償運算，以增加各軸之協調性，進一步地改善輪廓誤差，使得實際的切割路徑能夠近似於所預設的路徑。

關鍵字

交叉耦合控制；輪廓誤差；龍門式平台

並列摘要

This paper designed a carpentry machine and analyzed its processing path. The carpentry machine is designed as a gantry platform. The gantry platform is composed by two servo motors to drive the cutting tools moving in X and Y directions. In the Z axis of the gantry platform, a hacksaw machine and a drilling machine are installed to cut and drill. When the carpentry machine cutting wood, it will generate cutting vibration, tool wear and disturbance, etc., to produce some contour error. Thus the preset path is not the same as the desired path and will reduce machining accuracy. To resolve the contour error referred to the lack of coordination on multi-axis motion and errors generation between motion path and processing path, this study used the cross-coupled control (CCC) method to compensate and reduce contour error that made the actual cutting path could be approximated to the preset path.

並列關鍵字

Cross-coupled control ； Contour error ； Gantry stage

參考文獻

[16] 葉子豪，三軸雕刻機之路徑控制，私立中原大學碩士論文，民99

[3] Y. Koren, “Cross-Coupled Biaxial Computer for Manufacturing Systems,”

[4] Y. Koren and C.C. Lo, “Variable Gain Cross Coupling Controller for

using cross-coupled control and position error compensator,” International

in Proceedings of the 2000 IEEE International Conference on Control

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木工機械設計與誤差補償

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