Self adaptive diagnosis of tool wear with a microcontroller

Jantunen, Erkki; Vaajoensuu, Eero
April 2010
Journal of Intelligent Manufacturing;Apr2010, Vol. 21 Issue 2, p223
Academic Journal
Tool wear monitoring is very important for economical reasons. In this paper a new and very economical solution is presented. The idea is to use easily available microcontroller based hardware, which is very cheap due to mass production. The cheap hardware is combined together with sophisticated software. The use of regression analysis techniques together with fuzzy logic makes the system self adaptive, i.e., the system can monitor new tools automatically after a short learning period. The automatic learning period typically only lasts in the order of 5% of the total tool life time of an individual tool and thus makes the introduction of the method really simple and effective. The article focuses on the introduction and use of microcontroller based hardware but also covers and summarizes the principles behind the new approach which makes it possible to use hardware with limited capability. A more detailed description of the physical and mathematical background can be found in the given references. The proposed approach is tested with data from drilling tests.


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