Automatic monitoring of tool wear and breakage when drilling and grinding

Abstract

Damages frequently occur during machining because of tool breakage that is due to a short-term overloalding of the tool or to long-term symptoms of wear that exceed the permissible limits on tool life. The characteristic signs that such has occured are significant changes in the machining-force ratios. Equivalent measured quantifies are defected and evaluated for the monitoring of machining forces during industrial production.