The larger side rake angle produces chipping
The smaller rake angle produces excessive wear and deformation in tool
The side cutting edge angle (less than 15 degree) increases tool life
The increase in nose radius decreases tool life.
side cutting edge angle
tool nose radius
Rake angle
end cutting edge angle
carbide tools
heavy loads
harder materials
all of these
Negative rakes are used for * carbide tools * heavy loads * harder materials
nose part, front relief face and side relief face of the cutting tool
face of the cutting tool at a short distance from the cutting edge only
cutting edge only
front face only
hardness of the work and tool material at the operating temperature
amount and distribution of hard constituents in the work material
degree of strain hardening in the chip