
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
86/190
Fig.2.19.3 (a) Difference of end point
• Cutter compensation C
The spiral interpolation function and conical interpolation function can be used
in cutter compensation C mode. Cutter compensation is applied along a virtual
circle whose center is located at the center of spiral interpolation and which
passes through the end point of a block. Spiral interpolation is applied to the
path obtained after cutter compensation is applied.
Fig.2.19.3 (b) Cutter compensation C
Q-20.
G90 G02 X0 Y-33.5 I0 J-100. F300 ;
L4
When the specified end point is (0,-33.5), the calculated end point is
(0,-30.0). Specify a value greater than the difference ( α
: permissible
error) in parameter. Also set the parameter in this way, for the
difference in height in conical interpolation.
-33.5
-30.0
100.0
X
20.0
20.0
20.0
α
Spiral interpolation
program
Virtual
circle
Path of the center o
a tool
r
r
Center
Path obtained with spiral interpolation
after cutter compensation is applied.