The influence of selected input parameters on tool wear and surface roughness were determined for both coated
and uncoated tool. During intermittent cut, with an increase in cutting speed, the frequency of tool entry and exit of
the workpiece also got increased. Due to this, high impact load on tool edges occurs, which leads to rapid tool wear.
This makes cutting speed even more important to the end of tool life. When the cutting edges used in the
experiments were much more chipped than properly worn, this means that, the shock (high impact load) between the
edge and workpiece during the entry of the tool was more important than the friction in causing the end of tool life.
But at higher velocities, cutting edge gets chipped off due to stress reversal which is predominant for both coated
and uncoated tools. Stress reversal due to cyclic load caused by the intermittent cut was well resisted by the TiN
coated tool compared to uncoated tool. Abrasive wear was found during intermittent cut milling for both coated and
uncoated tools. The major tool failure determinant is the location of initial impact on tool and its magnitude. The
effect of feed was analyzed and found that lower cutting parameters, the effect of feed on tool wear were very
minimal. Meanwhile, a considerable increase of surface roughness was noticed for both the tools with an increase in
feed rate. The examination of machined surface quality was conducted after each trial and noticed that the feed rate
was the most influential factor in determining the surface quality.