Author
Abstract
Tool geometry play an important role in mechanical machining and surface finish of
workpiece. So there are many parameters such as cutting speed ,feed rate ,and tool nose
radius that are known to have a large impact on surface quality,however there are many
more parameters that have an effect on the surface roughness . this paper fouced on effect of
tool nose radius on surface roughness and run out which causes tool chatter, the experments
prove that high values of nose radius causes rough surface with high value of run out also in
this paper use seven different values of nose radius of cutting tool were(0.3,0.4, 0.5. 1 , 1.5,
2, 2.5mm) under different of cutting conditions ( such as feed rate ,cutting speed , depth of
cut ) Results show that good surface finish at nose radius (0.4, 0.5 )mm which lead to reduce
tool chatters, work run out during machining another calculations were done theoritically
for arithmetic roughness which have a small difference with experimentally tests and
increasing of roughness and run out at values less than (0.3mm).
Keywords
)
