
7.COORDINATE SYSTEM PROGRAMMING B-63944EN/02
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Example
M
X
X’
Y’
Y
Tool position
160
100
100
100
200
If G92X100Y100; is commanded when the tool is positioned
at (200, 160) in G54 mode, workpiece coordinate system 1
(X' - Y') shifted by vector A is created.
New workpiece coordinate system
Original workpiece coordinate system
G54 workpiece coordinate system
60
Suppose that a G54 workpiece coordinate
system is specified. Then, a G55 workpiece
coordinate system where the black circle on
the tool (figure at the left) is at (600.0,1200.0)
can be set with the following command if the
relative relationship between the G54
workpiece coordinate system and G55
workpiece coordinate system is set correctly:
G92X600.0Z1200.0;
lso, suppose that pallets are loaded at two
different positions. If the relative
relationship of the coordinate systems of the
pallets at the two positions is correctly set by
handling the coordinate systems as the G54
workpiece coordinate system and G55
workpiece coordinate system, a coordinate
system shift with G92 in one pallet causes
the same coordinate system shift in the othe
pallet. This means that workpieces on two
pallets can be machined with the same
program just by specifying G54 or G55.
G54 workpiece coordinate system
1200.0
Z
Z
X'
600.0
600.0
1200.0
G55 workpiece coordinate system
Z'
Z'
X
X
X' - Z' ............New workpiece coordinate system
X - Z .............Original workpiece coordinate system
: Offset value created by G92
B : Workpiece origin offset value in the G54
C : Workpiece origin offset value in the G55
B
C
X'