PROGRAMMING
B–63684EN/01
15. COMPENSATION FUNCTION
253
1) During normal–line direction control, the T command results in an
alarm (No. 4606) except when the TANDC parameter (bit 7 of
parameter No. 16263) is 1, in which case a single–tool command is
valid.
2) During normal–line direction control, the C command is ignored. A
C–axis offset command is also ignored if a C–axis index tool is
specified.
3) A C–axis offset command specified before a normal–line direction
control mode is entered remains valid after the normal–line direction
control mode is entered.
4) Usually, a check is made on T commands during normal–line direction
control. If a T command is already specified when a normal–line
direction control mode is entered, a check is not made on the T
command. Normal–line direction control is carried out no matter what
tool type is specified.
Under normal direction control, a punch press shears a sheet while
holding the sheet and moving the tool with interpolation. The cutting of
an arc should be programmed as follows: Linear positioning is performed
with the C–axis set in the direction normal to the tangential direction at
the start point of the arc; The sheet is held by the PF signal; A C–axis
normal–direction movement is made with circular interpolation. The
program should be created so that an arc and a straight line are connected
by a tangent even in the normal direction control mode.
[Example]
G92 X1525 Y1525
G90
T201
G70 X500 Y200 ² Positioning for creating a tangent at the start point
of the arc
G41.1 (G70: Positioning and press off command)
G00 X500 Y500 ² Positioning to the arc start point with the C–axis set
in the direction normal to the direction of the arc
tangent
G03 X421.14 Y459.171–50F5000
G40.1
D T and C commands
during normal–line
direction control