
A-79348E
Title
Draw
No.
11/88
page
FANUC Series 30i-MODEL A
Tool center point control
for 5-axis machining
Ed. Date Design Description
Date Jan.16.’04 Design. Apprv.
- Circular interpolation for tool center point control (type 2)
G43.5 IP_ H_ Q_ ; Starts tool center point control (type 2).
:
G17 : X-Y plane of the table coordinate system
G18 : Z-X plane of the table coordinate system
G19 : Y-Z plane of the table coordinate system
G02 : Clockwise (CW) circular interpolation
G03 : Counterclockwise (CCW) circular interpolation
IP : In the case of an absolute programming, the
coordinate value of the end point of the tool tip
movement
In the case of an incremental programming, the
amount of the tool tip movement
(This pertains only to two axes on the plane.)
I, J, K : Tool axis direction at the block end point as seen from
the programming coordinate system
R : Arc radius R > 0: The center angle of the arc is less
than 180°.
R < 0: The center angle of the arc is
more than 180°.
F : Specified speed (speed in the tangent direction of the
arc as seen from the table coordinate system)
H : Tool offset number
Q : Inclination angle of the tool (in degrees)
Movement to the position specified by the G43.5 block does not constitute
tool center point control. Only tool length compensation is performed.
No rotary axes are specified. Instead, the direction of the tool end point is
specified as I, J, K, as seen from the programming coordinate system (the
one fixed on the table when G43.5 is specified).
With a tool rotation type machine, I, J, K can be specified using the G43.5
block. In the case of a table rotation type or mixed type machine, however,
these cannot be specified. Specifying them with a table rotation type or
mixed type machine causes alarm PS5421.
While performing compensation for the rotary axes, the CNC controls the
control points so that the tool center point moves along an arc with respect to
the table (workpiece). The end of the tool center point comes to the point
specified on the programming coordinate system.
G02
G17 IP
I J K R F ;
G03
G02
G18 IP
I J K R F ;
G03
G02
G19 IP
I J K R F ;
G03