
B-63783EN-1/01 11.PROGRAM COMMAND
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- Feature coordinate system with the table rotated by G53.1 (tool axis direction
control)
Let's take a mixed-type machine shown in Fig.11.17(f) as an example.
If the table rotates under tool axis direction control (G53.1), the feature
coordinate system (called the first feature coordinate system) that is set
in the workpiece coordinate system as directed with the feature
coordinate system set command (G68.2) rotates as much as the table
rotates.
Let the feature coordinate system that has rotated be the second feature
coordinate system.
Once G53.1 is issued, the subsequent cutting commands are assumed to
be issued in the second feature coordinate system. (See Fig.11.17(g).)
In the mixed-type and table rotation type machines, the specified
feature coordinate system (the first feature coordinate system) may
vary from the feature coordinate system to be used in cutting (the
second feature coordinate system).
X
Y
Z
Xc’
Yc’
Zc’
G53.1 command
X
Y
Z
Xc’
Yc’
Zc’
G01 Y10.0 F1000
command after G53.1 is
issued.
Second feature coordinate
system Xc-Yc-Zc
Second feature coordinate system
Xc’-Yc’-Zc’
Fig.11.17 (g)