本文建立鋸型槽銑刀之刀腹磨耗光學影像檢測系統，以進行刀具齒刃面磨耗分析。此系統建構於金相顯微鏡下，以步進馬達驅動鋸型銑刀之專用夾持器，利用Arduino介面控制馬達運動，準確地驅動受測件到達設定的檢測位置，並藉顯微鏡之CCD完成齒刃面影像擷取。為了獲得可辨識的影像進行磨耗分析，影像需依序經過：去銳利化遮罩、影像旋積處理、邊緣去銳利化遮罩、Butterworth低通濾波四項影像程序，利用田口方法獲得最佳的影像處理參數，以建立實驗刀具之刀腹磨耗資料庫。
本研究共有七把不同切削條件之實驗刀具，根據「齒刃面磨耗面積」、「切刃邊退線量」、「齒刃面邊角磨耗量」等三項特性進行評估，探討切削行程對刀腹磨耗之影響。實驗分析結果顯示: 「切刃邊退線量」與「齒刃面邊角磨耗量」可以清楚地反映切削行程對刀腹磨耗之影響；然而，評估刀具整體磨耗效應時，以「齒刃面磨耗面積」方式為宜。
This study establishes optical image system for flank wear inspection of a splitting saw cutter to perform the wear analyses on the tool land face. This system was erected on a metallographic microscope. Using a stepper motor to drive the special gripper designed for the cutter. The motor movement was controlled by the Arduino interface to actuate the measured cutter arriving the inspection position accurately. The land face images were captured by the CCD built in the microscope. In order to obtain a recognizable image for wear analyses, the images must pass through several image procedures, such as unsharp masking, image convolution enhancement, edge enhancement, and Butterworth low pass filter. The optimal image parameter set was obtained by Taguchi’s method, and used it to collect the images for the tool wear bank.
This study has seven examined worn cutter with different milling conditions. The wear inspection was performed base on three characteristics including wear area on the land face, length of wear land of the cutting edge, corner wear on the land face. Analytical results show that both the length of wear land of the cutting edge and corner wear of the land face can clearly reflect the effects of cutting strokes to the tool flank wear. However, for the whole cutter wear evaluations, the suggested method is the wear area on the land face.
