Development of monitoring system on the diamond tool wear |
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Authors: | In-Hyu Choi Jeong-Du Kim |
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Affiliation: | Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Taejon, 305-701, South Korea |
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Abstract: | Recently, ultra-precision machining using a single crystal diamond tool has been developing very rapidly, especially in the fields of production processes for optical or magnetic parts such as magnetic discs, laser mirrors, polygon mirrors and copier drums. As a result, it has been successfully extended to machine various soft materials, generating mirror-like surfaces to sub-micron geometric accuracy with the ultra-precision CNC machine and the single crystal diamond tool. With the real cutting operation, the geometric accuracy and the surface finish attainable in machined surfaces are mainly determined by both of the sharpness of a cutting tool and stability of the machine vibration. In this study, for monitoring the progress of machining state for assuring the machining accuracy and the surface quality, a new monitoring method of machining states in face-cutting with diamond tool is proposed, using the frequency response of multi-sensors signal, which includes wear state of tool in terms of the energy within the specific frequency band. A magnetic disc is machined on the ultra-precision lathe. |
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Keywords: | Machining Diamond cutting tools Single crystals Precision engineering Computer control systems Numerical control systems Cutting Machine vibrations Frequency response Sensors Wear of materials Monitoring Diamond tool wears Ultra-precision machining |
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