
B–63682EN/01
5. REFERENCE POSITION
NC FUNCTION
43
It is possible to return the workpiece to the floating reference position by
commanding the G30.1.
The floating reference position is located on the machine and can be a
reference position of some sort of machine operation. It is not always a
fixed position but may vary in some cases. The floating reference
position can be set using the soft keys of MDI and can be memorized even
if the power is turned off.
Generally, the position where the workpieces can be replaced on punch
press machine is a set position on top of the machinery. The workpieces
cannot be replaced at any machine angle. Normally the workpieces
replacement position is at any of the No. 1 reference position. The
workpiece can be restored to these positions easily by G28 command.
However, depending on the machine, the workpieces can be replaced at
any position as long as it does not contact the machine.
For machinery such as these, in order to reduce the cycle time, it is
advantageous to replace workpieces at a position as close as possible to
the current position. For this purpose, workpiece replacement position
must be changed for each work shape and this feature can be easily
realized by this function. Namely, the workpiece replacement position
which is suitable for workpieces can be memorized as the floating
reference position and it is possible to return the workpiece to the
workpiece replacement position easily by commanding the G30.1.
G30.1 _ ;
IP
IP
: It is the intermediate point to the floating reference position and is
commanded by an absolute value or an incremental value.
When the G30.1 is commanded, the axis commanded is set to the
intermediate point with rapid traverse at first and then is set to the floating
reference position from the intermediate point with rapid traverse. The
positioning to the intermediate point or to the floating point is performed
at rapid traverse for each axis (non-linear positioning). The floating
reference position return completion signal is output after completing the
floating reference position return.
Y
X
G30.1 G90 X50.0 Y40.0 ;
Intermediate point (50, 40)
Workpiece
Floating reference position
5.3
FLOATING
REFERENCE
POSITION RETURN
(G30.1)
Format
Explanations
Examples