Flank Wear
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Flank Wear
Flank Wear - Flank wear means wear on the flank of a cutting tool and is caused by friction between the newly machined, workpiece surface and the contact area on the tool flank. Because of the rigidity of the workpiece, the work area, referred to as the flank wear land must be parallel to the resultant cutting action.
The
width
of
the
wear
land
is
usually
taken
as
a
measure
of
the
amount
of
wear
and
can
be
readily
determined
by
means
of
a
tool
maker's
microscope.
The curve can be divided into three regions:
(i) The region AB where the sharp cutting edge is quickly broken down and a finite wear land is established.
(ii) The region BC where wear progresses at a uniform rate.
(iii) The region CD where wear occurs at a gradually increasing rate.
It is advisable to regrind the tool before the flank wear enters the last region, CD.
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