TAILIEUCHUNG - Cảm biến trong sản xuất P9

The profitable use of advanced monitoring systems is more and more integrated in modern mass manufacturing processes since reliable equipment is available. The idea is to improve the metal forming process due to the high availability of tools and machines by decreasing machine setup and failure times. Therefore, it is important to employ new sensor technologies in metal forming systems for the observation of process signals. | 172 1 4 Sensors for Process Monitoring Sensors in Manufacturing. Edited by . Tonshoff I. Inasaki Copyright 2001 Wiley-VCH Verlag GmbH ISBNs 3-527-29558-5 Hardcover 3-527-60002-7 Electronic Metal Forming E. Doege F. Meiners T Mende W. Strache . Yun Institute for Metal Forming and Metal Forming Machine Tools University of Hannover Germany The profitable use of advanced monitoring systems is more and more integrated in modern mass manufacturing processes since reliable equipment is available. The idea is to improve the metal forming process due to the high availability of tools and machines by decreasing machine setup and failure times. Therefore it is important to employ new sensor technologies in metal forming systems for the observation of process signals. Sensors for the Punching Process In the last 30 years enormous improvements have been achieved in the stamping process concerning economic production accuracy and possible shape of the parts 1 . Today s tools are more sophisticated and more expensive. The costs of a modern multi-stage tool can be more than US 100000 and requires constant process monitoring to achieve high availability of the tool. This aspect is very important for the trend of just-in-time production. Also customer requirements for 100 quality control can be fulfilled with indirect quality control by the process signals. Therefore the demand for tool safety devices and process control units is increasing constantly 2 . Traditional limit switches 3 are not sufficient. The manufacturers expectations for modern process control systems are as follows complete quality assurance and documentation 100 indirect product quality control protection of expensive and complex multi-stage tools against breakage and subsequent damage machine overload protection detection of feeding faults extended production time with no supervision ghost shifts decrease of setup times and support with stored parameters fewer production stoppages by premature .

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