
A-78656E/01 FANUC Series 16i/18i-TB Compound Machining Function
63/127
Nov.14.2001 Edition 1
Example of machining
the side face of workpiece
as B=0
°
°°
°
The above-mentioned three dimensional coordinate conversion
expression is as follows.
X, Y, Z: Coordinates in the original coordinate system
(Wookpiece coordinate system)
x, y, z: Program value
(Coordinates in the program coordinate system)
x1, y1, z1: Center of rotation of the conversion
Px, Pz: Distance from the imaginary origin to the center of
rotation of B-axis (parameters)
Note
Please command G68 on the Z-X plane. P/S alarm 47
occurs in commanding G68 on other planes.
This is optional function. Set the parameter No.
13000#2(BA3D) to “1”.
sin
θ
0
cos
θ
X
Y
Z
0
1
0
Px
0
Pz
-cos
θ
0
sin
θ
Px
0
Pz
cos
θ
0
-sin
θ
0
1
0
sin
θ
0
cos
θ
x
y
z
=-++
x1
y1
z1
B axis rotate
center position
+Z
+Z’
(B0
°
)
Program
origin
EXOFSx
EXOFSz
The direction of spindle in the
actual machining and the
direction of spindle when the
former three dimensional
coordinate conversion is only
executed (B=0)
Workpiece origin
(B0
°
)
Pz
+X’
Px
OFS