CNC工具機之多軸伺服同動精度補償研究

The Measurement and Error Compensation for Contouring Accuracy of Multi-Axis Machine tools

李卓道(Cho-Tao Lee)

指導教授 ： 王世明

中原大學/工學院/機械工程研究所/碩士(2002年)

https://doi.org/10.6840/cycu200200402

摘要

有鑑於一般產業界對於CNC數值工具機的伺服同動精度的控制與量測，一直無法有一套高效率低成本的量測與調教方法，因此，本論文針對CNC數值工具機之同動精度進行相關量測技術及參數調整方法之研究，主要包括：多軸同動匹配控制以及一套完整的3-D高效率量測校驗系統與控制器參數調教的應用。
在多軸同動匹配控制上，首先建立各種不同軌跡下之輪廓誤差模型，將此輪廓誤差，利用交叉耦合控制回授，得到各軸之修正量，再藉由該修正量來補償輪廓誤差。另一方面，本論文也發展了一套以Ball-Bar為主之完整的3-D低成本高效率量測校驗系統與控制器參數調教的應用，除了一般單軸與兩直線軸之定位與循圓精度的量測校驗外。本論文也發展旋轉軸與直線軸同動匹配及五軸同動匹配的校驗技術，其主要是用Ball-Bar系統，透過同動軌跡規劃，利用單點法對路徑中之待測點進行誤差量測，繼而利用曲線擬合方法，求得機器之實際運動軌跡，再代入所推導之輪廓誤差模型，以決定其實際論廓誤差，而該量得之輪廓誤差將可作為交叉耦合控制之重要依據同時本研究也探討藉由控制器參數的調整補償，來提深機器同動伺服精度，除電腦模擬外，也進行實機測試，以驗證參數調整方法的正削性與可行性，因而可得到一套完整的工具機精度量測校驗方法。

關鍵字

空間量測 ； 輪廓誤差

並列摘要

In order to build up the systematic development and measurement technology for multi-axis machine tools in 3-D space. The Measurement and Error Compensation for Contouring Accuracy of Multi-Axis Machine tools are investigated in this thesis.
Firstly, the contouring error models for different tool paths were developed. Subsequently, the cross-coupled controller was designed to compensate the contouring error in corporate with the developed contouring error model. Secondary, a method of using Ball-Bar measure 3-D space, a high efficacy and low cost measure system, and the application to controller’s parameters is developed in this thesis. Besides the position accuracy of single axis and the contour accuracy of two linear axes, a linear axis and a rotation axis
Finally, experiments will also be conducted to verify the reliability and feasibility of the developed technologies and system.

並列關鍵字

Contourl error 3-D measurment

參考文獻

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