The simplified approach to machining faster involves
increasingcutting conditions, namely depth of cut, feed,
and cutting speed. However, increasing cutting conditions
has a number of consequences in regard to the loads
placed on the cutting tool. In this analysis we concentrate on
the mechanical loads. It should be understood that
mechanical loads on the cutting tool and cutting force are
not the same thing.Mechanical load can be thought of in
terms of pressure (force per unit surface area). A high
cutting force spread over a large area produces a relatively
small load on the tool. On the other hand, even a low cutting
force concentrated in a very small part of a tool can produce
a problematic load. The cutting force is influenced by the
workpiece material, tool geometry, and cutting conditions. In
turn, the cutting force influences power consumption,
vibration, workpiece tolerances, and tool life.
Effectsodf cutting parameters
Cutting speeds that are too high can reduce the
reliability of a process through uncontrolled chip
formation, extreme tool wear, and vibration that can make
a tool chip or fracture. The practical conclusion is that
higher feeds and depths of cut combined with low or
moderate cutting speeds offer the best potential
for operational security and reliability. Higher cutting
speeds, if depth of cut and feed are sufficiently low to limit
cutting forces, can provide greater productivity.