VARIOUS FUNCTIONS AND
PRECAUTIONS OF Symbolic FAPT
2. CAUTIONS FOR USING
(14) If there is a portion left uncut when a pocket with a curved bottom
is finished using a button tool
Dividing the cutting area shown below causes an area on the bottom
of the pocket to be lost when the cutting area shown in Á is created
internally if the following conditions are satisfied:
D The division point for the cutting area is on the concave surface.
D The clearance value is smaller than the nose R.
In these cases, set the clearance to a value larger than the nose R of
the button tool.
CD*: Cutting direction
DS*: Division start point
DE*: Division end point
Fig. 2.5 (r)
(15) If a curved tool path is created in end facing for linear elements
End facing for linear elements may result in a curved tool path being
created if the following conditions are satisfied:
D An arrow at the division end point DE crosses the curved portion
of the blank figure in the X–axis direction as shown in Fig. 2.5 (s).
D The finishing allowance TZ for the subsequent end facing is larger
than the finishing allowance TZ for the previous inner surface
In these cases, tilt down the arrow at the division end point DE as
shown in Fig. 2.5 (t).
Fig. 2.5 (s) Fig. 2.5 (t)