2. CAUTIONS FOR USING
VARIOUS FUNCTIONS AND
PRECAUTIONS OF Symbolic FAPT
If a groove contains two or more concaved portions, it cannot be machined
by one process only. However, it can be machined by dividing it into two
or more portions.
Cannot be grooved.
Grooving is possible when the groove is divided into A
and B portions.
AS a special case, grooving becomes impossible when two or more
concaved parts exist in a groove, depending upon the dividing
directions of the groove, even if the groove figure is normal.
If and are specified as the dividing
directions as illustrated in the above figure,
threeconcavedparts (1), (2), (3) are produced
in the grooving area, causing the grooving to
If is specified as the dividing direction,
only one concaved part exists,
is possible without any trouble.
Concaved Parts in