
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
67/190
• Offset mode
In offset mode, positioning (G00) and linear interpolation (G01) are subject to
compensation.
Note
If, in G41.5 or G42.5 mode, a G code other than G00 and G01, such as
circular interpolation (G02 or G03) is issued, compensation will not be
performed properly.
• Operation in the compensation mode
Changing of offset directions and offset values, holding of vectors, interference
checks, and so on are performed in the same way as for cutter compensation.
G39 (corner rounding) cannot be specified. So, note the following :
(1) When the tool center path goes outside the programmed tool path at a corner,
a linear movement block, instead of an arc movement block, is inserted to
move the tool around the corner. When the tool center path goes inside the
programmed tool path, no block is inserted.
:Tool center path
:Programmed tool path
Example (1)-1 When going around the
outside of a corner with
an acute angle
linear movement block is inserted
Tool
Tool
Workpiece
Workpiece
:Tool offset value
No block is inserted
Example (1)-2 When going around the
inside of a corner with
an acute angle
Fig. 2.17.3 (d) Operation in the compensation mode (1)-1, 2
In the above examples, the term "inside" means that the tool center path is
positioned inside the programmed tool path at a corner, and "outside" means
that the tool center path is positioned outside the programmed tool path. In
Example (1)-3, the relationship between the tool center path and the
programmed tool path is the same as in Example (1)-1; the tool center path is
positioned outside the programmed tool path. Example (1)-4 has the same
relationship as Example (1)-2, where the tool center path is positioned inside
the programmed tool path.