Originally posted by hardmill
As simply as i can put it hsm is taking smaller, lighter cuts
at high feedrates. Special tools are required as well as the
machines ability to take in the code. Machine also needs
to be equipped with an acceleration & deceleration options
so it will slow down in tight corners. It doe'nt always require
all those variables but then you may lose on accuracy, tool life,
etc. An older machine could feasible be used and still gain
positive results. Hard machining requires similiar variables.
Generally you start at about 600sfm depending on matl., mach.,
toolpath ,tooling, etc...