Fanuc Series 15i/150i-MA (Programming) Operators Manual

B-63324EN/03 PROGRAMMING 13.FUNCTIONS TO SIMPLIFY PROGRAMMING
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13.9 THREE-DIMENSIONAL COORDINATE CONVERSION
(G68,G69)
Coordinate conversion about an axis can be carried out if the center of
rotation, direction of the axis of rotation, and angular displacement are
specified. This function is very useful in three-dimensional machining
by a die-sinking machine or similar machine. For example, if a
program specifying machining on the XY plane is converted by the
three-dimensional coordinate conversion function, the identical
machining can be executed on a desired plane in three-dimensional
space.
X
Y
Z
Z
Y
X
Three-dimensional coordinate conversion
Fig.13.9 (a) Three-dimenSional coordinate conversion
Format
Format
G68 Xp x
1
Yp y
1
Zp z
1
I i
1
J j
1
K k
1
Rα ; Starting three-dimensional
coordinate conversion
G68 Xp x
2
Yp y
2
Zp z
2
I i
2
J j
2
K k
2
Rβ ; Three-dimensional coordinate
conversion mode
G69 ; Canceling three-dimensional coordinate conversion
Symbol
Xp, Yp, Zp : Center of rotation (absolute coordinates) on the X, Y, and Z axis or parallel axes
I, J, K : Direction of the axis of rotation
R : Angular displacement

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