Abstract. Previous research has found that the peripheral and end cutting edges of the
cutter had different cutting mechanisms in the micro end cutting process
considering the size effect. This investigation is a further study on this
point considering the cutting edge radius of the cutter and the material of
the workpiece based on the methods of finite element simulation and the micro
end cutting experiment. This study adopts a combination of simulation
and experiment research methods and the cutting edge radius and the workpiece
material as two variables. Considering the cutting mechanisms of the
peripheral cutting edge and the end cutting edge are different, the
peripheral cutting edge and the end cutting edge are studied respectively.
Meanwhile, the minimum undeformed chip thickness (MUCT) value is determined in three ways, chip morphology,
cutting force, and surface roughness, so the final result obtained by
comparing three kinds of results has a very important reference value. Not
only are the chip morphology obtained by finite element simulation and the
surface roughness obtained by the micro end cutting experiment used to
identify the MUCT value, but also the
cutting force. The simulation and
experimental results show that the cutting force can be used to identify the
MUCT value for the peripheral cutting edge, but it cannot be used for the
end cutting edge. The MUCT value increases with the increase of the
cutting edge radius, no matter which process it is. The material property
has some effects on the MUCT value; even the cutting parameters and the
cutting edge radius remain unchanged for the peripheral cutting edge.
However, the material property has no effect on the MUCT value for the end
cutting edge. In this study, the influence of important variables on MUCT is
studied as much as possible to reflect a real application
situation.
The Influences of Cutting Edge Radius on Surface Roughness when Milling Nickel Alloy
