Due to the relatively high cutting forces produced during cutting of hardened materials [23],determination of these forces is essential for not exceeding the elastic limit of theMachine-Fixture-Tool-Workpiece (MFTW) system [24]. The increase of the cutting forces abovethis limit usually affects the dynamics of the machining process and can cause chatter. Therefore,reaching a range of cutting speeds results in decreasing the cutting forces can positively influence thestability of the machining process and the accuracy of the machined component [25]. Moreover, it candecrease the power consumed during cutting.