CNC車床量測誤差系統建構

Construction of Measurement Error System of CNC Lathe

陳雅君(Ya-Jyun Chen)

指導教授 ： 林瑞璋

共同指導教授 ： 林政仁

國立虎尾科技大學/工程學院/機械設計工程系碩士班/碩士(2017年)

摘要

近年來數控工具機大量投入生產行列，且逐步朝向無人化境界邁進，但由於工具機本身結構剛性及製造精度之限制，切削中不可避免的熱影響而造成工件、刀具、機器之熱變形，以及工件、機器之受力變形、刀具磨耗等因素，使得工件的精度難以達到預期精度，導致其加工的零件也出現變形。為了確定CNC加工之準確度，加工業者普遍將工件移至三次元或其他量測儀上量測，此方法容易造成第二次加工時累積之誤差，且較無效率。
本論文提出一應用雷射位移計（Laser Triangulation Sensor RF603）與CNC車床相結合之線上量測方法。研究以Visual Basic 2010撰寫的控制介面針對CNC加工之準確度量測，車床為Fanuc O-T的控制器，工件主要以階級桿為主，量測時將自製雷射夾治具裝至車床刀把上，並利用RS232與PC連接，透過雷射讀值量測加工前與加工後數值，此方法可實現在不移動工件的情況下提升量測效率與品質。由實驗結果得知，相較於傳統量測方式，利用雷射位移計量測，可減少誤差，並提升量測的效率。

關鍵字

雷射位移計 ； Fanuc O-T ； Visual Basic 2010

並列摘要

In recent years, a large number of CNC machine tools into the ranks of production, and gradually towards the unmanned realm forward, but due to the structural rigidity of the machine itself and the manufacturing accuracy of the constraints, the inevitable heat of cutting caused by the workpiece, tool, machine thermal deformation, Workpiece, the machine of the deformation, tool wear and other factors, making the accuracy of the workpiece is difficult to achieve the desired accuracy, resulting in its processing of parts also deformation. To determine the accuracy of CNC machining, the processing industry generally moved the workpiece to three yuan or other measuring instrument on the measurement, this method will not only result in the second processing of the cumulative error, and more inefficient.
In this paper, an online measurement method combining laser triangulation sensor (RF603) with CNC lathe is proposed. Research Visual Basic 2010 to write the control interface for CNC machining accuracy measurement, the lathe for the Fanuc OT controller, the main part of the class to the main pole, the measurement will be self-made laser fixture installed to the lathe knife handle, And the use of RS232 and PC connection, through the laser readings before and after processing the value of processing, this method can be achieved without moving the workpiece to improve the measurement efficiency and quality. According to the experimental results, compared with the traditional measurement methods, the use of laser displacement measurement, can reduce the error and improve the efficiency of measurement.

並列關鍵字

laser displacement meter ； Fanuc O-T ； Visual Basic 2010

參考文獻

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