VARIOUS FUNCTIONS AND
PRECAUTIONS OF Symbolic FAPT
2. CAUTIONS FOR USING
(22) If the tool cuts into a neck
If finishing is performed for portions A and B on a neck of a part
figure shown in Fig. 2.5 (ai) in the ( and ( directions, respectively,
an area for portion B is specified to be cut using the same tool as for
portion A after an area for portion A is specified. In this case, NC
data may direct the tool to cut into the end surface if Á rather than
À in Fig. 2 is selected as the area end point for portion B.
Fig. 2.5 (ai)
Fig. 2.5 (aj)
If system parameter No. 101 = 1 (pocket and overhang machining
methods), selecting Á in Fig. 2.5 (aj) as the area end point defines
the basic cutting area as shown in Fig. 2.5 (ak) because the portion
below the overhang is not cut. Applying offset processing to this
area causes the tool to cut in as shown in Fig. 2.5 (al).
Fig. 2.5 (ak) Fig. 2.5 (al)
The figure is inverted
at this portion.
Offset cutting area
In this case, take either of the following measures:
À Specify À in Fig. 2 as the area end point for the end face.
Á Set up system parameter No. 101 = 2 to cut the overhang.