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Furthermore, workpiece with different microstructures and dimensions, as well as cutting tool with different geometries, can be constructed easily through modeling; and the machining parameters such as nominal depth of cut and cutting velocity can be adjusted conveniently for each nanometric cutting simulation.
During the tests, performed at low cutting speed, avoiding thermal effects, and high speed, to investigate about the effect of the cutting velocity on the cut quality, the fibre orientation respect to the cutting direction, the tool rake angle and the depth of cut were varied to investigate their influence on the phenomenon.
The objective was to establish a correlation between cutting velocity, feed and depth of cut with the roughness evaluating parameters Ra and Rt, following the international norms.
In this work, the cutting velocity and the nominal depth of cut are fixed as 20 m/s and 2 nm, respectively.
The effect of cutting velocity, feed rate, primary depth-of-cut and secondary depth-of-cut has been analyzed on average surface roughness.
The cutting parameters considered are cutting velocity, feed rate, depth of cut and step over.
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Furthermore, the stress of material changes significantly with the increase of cutting speed since velocity vortexes may occur, resulting in the occurrence of the fracture.
The results revealed increment of material's build-up with feed rate whereas it decreased with the increase of cutting speed and chip sliding velocity.
The optimum cutting conditions for desired surface roughness and tool wear were at a high level of cutting speed, medium level of depth of cut, low level of feed rate and low-flow high-velocity (LFHV) cutting fluid flow from the selected levels.
Solid-state lasers as well as CO2 lasers offer, especially in thin materials, the opportunity of high cutting velocities.
An asymptotic regime occurs at relatively high cutting velocities (larger than 10 m/s) and for values of the sliding friction coefficient larger than 0.4.
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