
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
88/190
2.19.5 Example
• Spiral interpolation
The path indicated above is programmed with absolute and incremental values,
as shown below:
Fig.2.19.5 (a) Spiral interpolation
This sample path has the following values:
- Start point : (0,100.0)
- End point (X,Y) : (0,-30.0)
- Distance to the center (I,J) : (0,-100.0)
- Radius increment or decrement (Q) : -20.0
- Number of revolutions (L) : 4
(1) With absolute values, the path is programmed as follows:
G90 G02 X0 Y-30.0 I0 J-100.0 {Q-20.0 or L4} F300 ;
(2) With incremental values, the path is programmed as follows:
G91 G02 X0 Y-30.0 I0 J-100.0{Q-20.0 or L4} F300 ;
(Either the Q or L setting can be omitted.)
-120 -100 -80 -60 -40 –20 20 40 60 80 100 120
-120
-80
-60
-40
-20
20
40
60
80
100
120
Y axis
20. 20.
X axis
-100