Abstract
The traditional way to replace an end mill is based on empirical knowledge: a tool life criteria is defined according to the application, i.e. roughing or finishing, and the tool manufacturer provides tool life in different cutting conditions. The aim of this paper is to evaluate the possibility to use cutting force coefficients for identifying the tool wear of solid end mills with different number of flutes. Cutting forces have been measured with the new and worn tool, and they are used for estimating cutting force coefficients. Two different workpiece materials, DIN 42CrMo4 and AISI 304, have been used.
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