FANUC Series 16/18/160/180-Model C Machining Center Operators Manual

PROGRAMMING
B–62764EN/01
4. INTERPOLATION FUNCTIONS
61
The following G codes can be specified in involute interpolation mode:
G04 : Dwell
G10 : Data setting
G17 : X–Y plane selection
G18 : Z–X plane selection
G19 : Y–Z plane selection
G65 : Macro call
G66 : Macro modal call
G67 : Macro modal call cancel
G90 : Absolute command
G91 : Incremental command
Involute interpolation can be specified in the following G code modes:
G41 : Cutter compensation left
G42 : Cutter compensation right
G51 : Scaling
G51.1 : Programmable mirror image
G68 : Coordinate rotation
As shown below the end point may not be located on an involute curve
that passes through the start point.
When an involute curve that passes through the start point deviates from
the involute curve that passes through the end point by more than the value
set in parameter No. 5610, P/S alarm No. 243 is issued.
When there is an end point error, the feedrate is not guaranteed.
X
Y
Pe
Ps
End point
Path after correction
Deviation
Start
point
Correct involute curve
Fig. 4.8 (b) End Point Error in Counterclockwise Involute Interpolation (G03.2)
D Specifiable G codes
D Modes that allow
involute interpolation
specification
D End point error

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