
A-78640E
Sheet
Title
Draw
No.
04 Feb.08.’03 Part of (4) is added or modified. Addition of 2.16.5
03 Jul.02.’02 A. Fukumoto Part of (3) is added or modified. T.Endo
02 May.13.’02 A. Fukumoto Addition of Tool Radius control for 5-axis machining etc T.Endo
Ed. Date Design Description
Date Jan.25.’02 Desig. A.Fukumoto Apprv. T.Endo
FANUC Series 16i /18i -TB
Specifications of AI High-Precision Contour Control /
I Nano High-Precision Contour control
53/190
2.16.5 Concerning Circular Interpolation and Helical Interpolation during Tool Center
Point Control for 5-axis Machining
• Circular Interpolation
Format
G05 P10000 ; Starting AI/AI nano contour control
G43.4 IP H ; Starting the tool center point control for 5-axis machining
G49; Ending AI/AI nano contour control
G05 P0 ; Ending the tool center point control for 5-axis machining
Symbol description
G17 : The X-Y plane in the table coordinate system
G18
: The Z-X plane in the table coordinate system
G19
: The Y-Z plane in the table coordinate system
G02
: The clockwise circular interpolation (CW)
G03
: The counterclockwise circular interpolation (CCW)
IP
: In the absolute command, the end point of tool center point
In the incremental command, the moving amount of tool center point
I,J,K
: The distance to the center point of the arc from the start point
on the position of the rotation axis in starting the block on the
programming coordinate system
R
: The radius of the arc
R>0 : The center angle of the arc is less than 180 degrees.
R<0 : The center angle of the arc is more than 180 degrees.
α,β : In the absolute command, the coordinate value of the end point of
the rotary axis
In the incremental command, the moving amount of the rotary axis
F
: Specified speed
H
: Tool offset number
CNC interpolates including the rotary axis and controls the pivot point so that
the tool center point moves along the arc on the workpiece. The end point of the
tool center point is the point specified in the programming coordinate system.
Note
You must use G00 or G01 command in case a tool center point doesn't
move, or only rotary axes move.
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_