| dc.description.abstract |
In order to manufacture a component of high quality, surface quality is the most important requirement for users.
An understanding of the chip removal process in metal cutting is essential for material selection and tool design,
and also for ensuring consistent dimensional accuracy and surface integrity of the finished product. Friction in metal
cutting affects cutting power, machining quality, tool life and production costs. The most important measure of
surface quality during the machining process is the average surface roughness (Ra). When the tool wear reaches a
certain value, the cutting force, vibration and cutting temperature increase, causing the dimensional error to be
larger than the tolerance and the surface integrity to deteriorate. This tool wear is one of the most important aspects
of hard turning. Usually abrasion, adhesion and diffusion are considered the main tool wear mechanisms in hard
machining. However, the individual effect of each mechanism depends on the tool geometry, tool grade or class,
cutting parameters, and workpiece hardness. Tool wear increases linearly with increasing cutting parameters. This
indicates that the increased tool wear at higher cutting conditions may be due to abrasion especially at the rake and
flank during machining. The selection of dry machining is carried out with environmental efforts to minimize or
eliminate the use of cutting fluid waste. | en_US |
