Fanuc Series 15i/150i-MA (Programming) Operators Manual

B-63324EN/03 PROGRAMMING 5.FEED FUNCTIONS
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5.5 CUTTING FEEDRATE CONTROL
Cutting feedrate can be controlled, as indicated in Table 5.5 (a).
Table 5.5 (a) Cutting Feedrate Control
Function name G code Validity of G code Description
Exact stop G09
This function is valid for
specified blocks only.
The tool is decelerated at the end point of a
block, then an in-position check is made.
Then the next block is executed.
Exact stop mode G61
Once specified, this function is
valid until G62, G63, or G64 is
specified.
The tool is decelerated at the end point of a
block, then an in-position check is made.
Then the next block is executed.
Cutting mode G64
Once specified, this function is
valid until G61, G62, or G63 is
specified.
The tool is not decelerated at the end point of
a block, but the next block is executed.
Tapping mode G63
Once specified, this function is
valid until G61, G62, or G64 is
specified.
The tool is not decelerated at the end point of
a block, but the next block is executed.
When G63 is specified, feedrate override and
feed hold are invalid.
Automatic
override for inner
corners
G62
Once specified, this function is
valid until G61, G63, or G64 is
specified.
When the tool moves along an inner corner
during cutter compensation, override is
applied to the cutting feedrate to suppress the
amount of cutting per unit of time so that a
good surface finish can be produced.
Automatic
corner
override
Circular cutting
feedrate change
___
This function is valid in the
cutter compensation mode,
regardless of the G code.
The circular cutting feedrate is changed.
NOTE
1 The purpose of in-position check is to check that the
servo motor has reached within a specified range
(specified with a parameter by the machine tool
builder). In-position check is not performed when bit 1
(CSZ) of parameter No. 1000 is set to 1.
2 Inner corner angle θ : 2° < θ α 178°
(α is a set value)
Workpiece
θ
Tool

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