Abstract
We propose a novel on-machine measurement method of the tool cutting edge profile by using cutting fluid adhered on the tool surface. In an environment of on-machine tool profile measurement, the profile is difficult to measure with the conventional optical method since a cutting fluid adhered on the tool surface interferes the measurement. To overcome this problem, we propose the profile measurement method by confocal fluorescent detection from the cutting fluid adhered the tool surface. To verify the fundamental validity of the principle, fluorescence from horizontal and vertical surface were detected with a developped fluorescent confocal microscope by using fluorescent dye and silicon wafer. Furthermore, a cutting edge profile of horizontal plane of milling tool with wear was measured with the proposed method using the fluorescent dye as the basic verification. From this result, it is found that the proposed method enables to measure the tool wear at the surface with the oil adhering slightly, however the measurement capability of the measurement might depend on the thickness of the oil.
Highlights
The profile of cutting tool edge has a great influence on the performance of cutting
We proposed the novel on-machine cutting tool edge profile measurement method detecting fluorescence emitted from cutting fluid adhered on surface of the tool
Since the proposed method enables to detect the signal from vertical surface that is hard to detect signal by conventional optical methods, this method has possibility to measure a cutting tool edge profile having complex structured such a vertical surface
Summary
The profile of cutting tool edge has a great influence on the performance of cutting. The shape of cutting tool edge is deformed to chipping and wear, etc., by the repeated processing and the deformation affects directly on the surface of work-piece. Monitoring the shape of the cutting tool edge is demanded for further high accuracy machining. Tool profile measurement by removing the tool from the machine, has some problems such as a long measurement time, and a positioning error that occurs upon re-attachment of the tool. In order to solve those problems, the on-machine measuring technique is demanded. The measurement by applying the AFM [2] or an optical method [3, 4] have been proposed as on-machine measurement technology so far, those use are limited and lack versatility
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