非接觸式精密鑽石刀具換刀定位系統及刀具磨耗檢測系統之研製

Development of a non-contact measurement system for precision positioning in tool exchange process and for tool wear monitoring

劉又齊(Yu-Chi Liu)

指導教授 ： 趙崇禮

淡江大學/工學院/機械與機電工程學系碩士班/碩士(2010年)

https://doi.org/10.6846/TKU.2010.00943

摘要

傳統的加工技術已無法滿足於現況，產業追求「輕薄」、「短小」、
「多樣化」三大要求之產品，因此「超精密加工技術」成為重要關鍵
製造技術之一。使用鑽石刀具作超精密加工作業已被廣泛運用於生產
高精度之精密零件，主要應用於高硬度材料加工作業之中，鑽石刀具
具有堅硬、耐磨耗的特性，但仍會產生磨耗。超精密加工中以刀具影
響加工精度的主因有兩個：(1)刀具定位是否精確(2)刀具輪廓誤差，
因此檢測刀具輪廓與刀具定位以提高加工精度便是一項重要的研究。
本研究重點在於藉由光學式檢測系統之優點，輔以次像素技術提
高精度研發一套機械視覺系統輔助於刀具定位及刀具輪廓檢測。
經以光學顯微鏡驗證，研究中提出方法計算，刀具定位精度達
到±0.2um；刀具輪廓量測誤差由像素大小決定量測誤差、刀面角量測
誤差控制在±0.2°以內符合超精密加工作業之要求。

關鍵字

線上刀具輪廓監測 ； 機械視覺 ； 次像素

並列摘要

Diamond cutting tools have been widely used in ultra-precision
machining of precision components/molds where superb surface finish
and tight form accuracy are the basic requirements. Although diamond
has the highest hardness of known materials, it’s only the matter of time
the well-defined sharp cutting edge of diamond tool will gradually wear
down during the machining process. The wear induced profile error often
makes the outcome of machining rather unpredictable. Tool setting and
tool shape monitoring are therefore playing critical roles in ensuring high
product form accuracy. An effective and precise tool setting/profile
monitoring technique are essential in ultra-precision machining operation.
In the present study, a non-contact monitoring system together with
sub-pixel image processing technique was employed to in-situ monitor
tool profile. The results showed that the achievable accuracy of this
system strongly depended on the amount of frames, quality of the images
and the sub-pixel analysis technique. A tool setting accuracy of ±0.2μm
was successfully achieved in this study using the developed system.

並列關鍵字

In-situ Tool Profile Monitoring ； Machine Vision ； Sub-pixel

參考文獻

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Tool Equipped with a Sensor to Detect Flank wear”, Bull. Japan Soc.

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