Analysis of cutting force during milling with regards to the dependency on the penetration angle

In recent years the modeling of dynamic processes in milling has become increasingly important especially in the determination of process stability. In the future the importance of these models will increase in order to establish a virtual machine tool technology. In literature several mathematical models are used for the prediction of cutting forces assuming simplified dynamic (chatter free) conditions. These models are based on different parameters which are identified in various ways. The aim of this paper is to improve the identification process for the coefficients of a basic state of the art cutting model by using a numerical optimization method. Based on this optimized model, which reflects the measured cutting force chart more precisely, dependencies of the cutting force parameters on the penetration angle are proven.