VARIOUS FUNCTIONS AND
PRECAUTIONS OF Symbolic FAPT
2. CAUTIONS FOR USING
1st step: Positive direction and negative direction of input data
(1)The turret is mounted on the front side or on the rear side, depending
upon the types of NC lathes. If the turret is mounted on the rear side,
imagine a cutter located at a symmetric position on the front side,
obtained by turning the cutter around the Z axis as the rotation center
by a half turn.
(2)If the cutter is mounted inside out, grip a tool while erecting its shank
so that the cutting edge faces downward, and cutting edge faces
upward in other cases.
Assume a straight line which passes the tool nose edge and faces just
downward. The following figure shows examples typical figures of
cutters and the straight line which passes the tool nose edge and faces
just downward based on the presumption.