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Monitoring and Diagnosis Systems for Numerically Controlled Machine Tools

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Summary

An essential increase in productivity of machine tools and manufacturing-systems can be achieved by lowering the scrap to-finish product ratio, the salvage-ratio and the technical outage time of the facilities and the control systems. Monitoring and diagnostic-devices are effective means to maintain and increase the availability of machine tools and the quality of products machined thereon by automatically predetermining failures and detecting faults. Especially when working with reduced personnel, such systems are of extreme urgency.

The report summarizes in comprehensive form the causes for the growing necessity of monitoring systems and systematically analyzes the technical and organisational realisation of monitoring tasks. Representative examples from the industrial practice and from the development field describe the technical status quo and research aims concerning monitoring and diagnosis systems. A computerized device for NC-lathes is illustrated, which senses the actual raw-piece-contour by optical means and automatically generates an optimized cut-distribution from the NC-program. Furthermore, systems for detecting tool-breakage and edge-life-completion are introduced. A compensation-system for thermal displacements of the machine-components is discussed and a concept for numerical controls with high reliability-and performance-standards is outlined. The report closes with a survey of evaluation strategies for diagnostic-results.

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© 1984 Macmillan Publishers Limited

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Weck, M., Vorsteher, D. (1984). Monitoring and Diagnosis Systems for Numerically Controlled Machine Tools. In: Davies, B.J. (eds) Proceedings of the Twenty-Fourth International Machine Tool Design and Research Conference. Palgrave, London. https://doi.org/10.1007/978-1-349-81247-9_30

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