Abstract(s) :

(Anglais) A high proportion of machined goods production costs are associated with the management of cutting inserts. Early replacement leads to waste of inserts, whereas late maintenance induces scraps. The usual end-of-life criterion for cutting inserts is either based on machining duration, or on tool wear. The direct, optical evaluation of tool wear is time-consuming and impractical because of the machining environment. The cutting forces stand out among the indirect monitoring techniques. This work presents the case of cutting insert monitoring in turning AISI 1045 bars. The cutting forces and the cutting insert wear are monitored throughout the life of a tool in order to identify the evolution of cutting forces with tool flank wear. The use of a triaxial force sensor allowed to monitor the cutting force components along the three axes. The increase in feed force was identified as being the most significant for monitoring the tool wear evolution.