即時量測系統應用於五軸工具磨床其線性軸與旋轉軸之組立檢測

A Real-Time Measurement System for the Fabrication Inspection of Linear and Rotary Axes in A 5-Axis Tool Grinder

梁敦皓(Tun-Hao Liang)

指導教授 ： 李炳寅

共同指導教授 ： 王永成(Yung-Cheng Wang)

國立虎尾科技大學/工程學院/創意工程與精密科技研究所/碩士(2011年)

摘要

隨著刀具研磨發展快速，對刀具尺寸精度的要求也越來越高。刀具的切刃口研磨是深深影響加工形狀與刀具的切削性能、壽命、切刃口的研磨精度是相當重要的刀具研磨最後製程。本研究建構一組即時量測系統以應用於組立五軸工具磨床之線性軸與旋轉軸檢測，系統透過自行設計之檢測機構、量測資料之擷取、人性化程式介面開發，進行旋轉軸組裝與分度精度量測實驗，提供即時之組裝檢測，以降低各軸向之誤差及達到組立之最佳化。
運用本研究開發之即時量測系統，除單軸與雙軸同動之檢測外，亦可進一步對五軸工具磨床檢測線性軸與旋轉軸之誤差進行精度補償。為驗證建構之檢測系統性能，最後藉實際刀具研磨，以加工刀具尺寸精度特性做為效能評估依據。
經分析結果顯示，本研究所使用的工具磨床，經檢測補償及實際研磨後，刀具外徑幾何精度可提高至0.01 mm，螺旋幾何精度將可改善至0.11度。因此，本文所開發的即時量測系統針對五軸刀具磨床線性軸及旋轉軸組立之檢測與補償，可顯著改善刀具磨床性能並提升研磨精度與品質。

關鍵字

工具磨床 ； 線性軸 ； 旋轉軸 ； 誤差補償

並列摘要

Due to rapid developments in the modern cutting technology, the demand for all kinds of high precision tools will relatively increase. The grinding manufacturing for cutting edge of tools is known as the most important and the final procedure. It is also a critical issue for determining the geometrical profiles, cutting performance, wear on the cutting edge, and tool life. Therefore, this study is concerned with the development of a real-time measurement system for the error inspection and compensation of linear and rotary axes during fabrication of 5-axis tool grinder. The major components include the self-developed mechanical fixtures, the data acquisition system and HMI formation etc. During fabrication of rotary axis, accurate positioning and indexing measurement can be realized by this real-time inspection system. With the aid of this proposed system, errors of each axis will be minimized and the optimal fabrication can be achieved.
The developed real-time measurement system can be utilized for the inspection of single axis and the simultaneous inspection of dual axes in a 5-axis tool grinder. Besides, their error compensation can be also performed by this system. To verify the measurement performance of this system, the dimensional precision characteristics of ground cutters will be regarded as the evaluation reference.
The results show that the geometrical accuracy of the diameter will be enhanced to0.01mm with positioning compensation. And the spiral geometrical accuracy will be improved to 0.11degrees. Hence it can be proved that the performance of tool grinder has been promoted and the precision and quality of ground cutters have been also advanced by the proposed real-time measurement system for fabrication inspection and compensation of linear and rotary axes in a five-axis tool grinder.

並列關鍵字

Tool grinder ； linear axes ； rotary axeserror ； compensation

參考文獻

[1] S. Wei kert .,2004,“R-Test, a New Device for Accuracy Measurements on Five Axis Machine Tools,” CIRP Annals-Manufacturing Technology,Vol.53No, pp. 429-432.

[2] Anthony Chukwujekwu Okafor, Yalcin M. Ertekin.,2000, “Vertical Mchining Cnter accuracy characterization using laser interferometer Part 1:Linear positional errors,” Journal of Materials Processing Technology, Vol.105, pp. 394-406.

[3] Anthony Chukwujekwu Okafor, Yalcin M. Ertekin.,2000, “Vertical machining center accuracy characterization using laser interferometer Part 2:Angular errors,” Journal of Materials Processing Technology,Vol.105, pp. 407-420.

[4] Soichi Ibaraki, Takafumi Hata, Atsushi Matsubara.,2009, “A new formulation of laser step-diagonal measurement—two-dimensional case,” Precision Engineering Volume.33, pp. 56–64.

[5] 陳立偉，1995，〝工具機轉動動態誤差量測及補償〞, 國立清華大學動力機械研究所碩士論文。