
A-78709E
Edit
Apprv. Desig.
Sheet
Title
Draw
No.
Date
Design
Descri
tion
Date
FANUC Series 16i –MB, 18i –MB5
Tool Center Point Control For 5-Axis
machining Specifications
Dec.01.2001
02 Mar.22.2002
T.Mochida All revision H.Kouzai
T.Mochida H.Kouzai
03 Dec.27.2002
T.MochidaWorkpiece coordinate system,circular ,Type2 add H.Kouzai
04 Mar.12.2003 M.Tanaka All revision H.kouzai
12
97
05 Jan.26.2004 T.Mochida Correction and addition of 5) E.Genma
- Circular interpolation for tool center point control (type 1)
G43.4 IP
H ; Starts tool center point control (type 1).
:
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 command, the coordinate value of the
end point of the tool tip movement
In the case of an incremental command, the amount of the tool tip
movement
(This pertains only to two axes on the specified plane.)
I, J, K : Specify the distance between the start point in the rotation axis
position of the block start point and the center of the arc, 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°.
α, β : In the case of an absolute command, the coordinate value of the
end point of the rotation axis
In the case of an incremental command, the amount of the rotation
axis movement
F : Specified speed (speed in the tangent direction of the arc as seen
from the table coordinate system)
H : Tool offset number
Movement to the position specified by the G43.4 block does not constitute tool center
point control. Only tool length compensation is performed along the tool axis direction.
While the rotation axes are moving, 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.
CAUTION
Any command that does not move the tool center point with respect to
the work
iece
one that moves the rotation axes onl
must be
G02 I J K
G17 IP
α β F ;
G03 R
G02 I
J K
G18 IP
α β F ;
G03 R
G02 I
J K
G19 IP
α β F ;
G03 R