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

4.INTERPOLATION FUNCTIONS PROGRAMING B-63324EN/01
- 52 -
Fig.4.5 (a) Feedrate When Parameter HTG = 0
When bit 2 (HTG) of parameter No. 1401 is set to 1, the speed command
specifies the feedrate along the actual tool path, including movement
along the linear axis.
In this case, the feedrate along the arc on the plane is:
22
)()( axislinearofLengtharccircularofLength
arccircularofLength
F
+
×
The feedrate along the linear axis is:
22
)()( axislinearofLengtharccircularofLength
axislinearofLength
F
+
×
Fig.4.5 (b) Feedrate When Parameter HTG = 1
Limitation
- Cutter compensation is applied only for a circular arc.
- Tool offset and tool length compensation cannot be used in a block
in which a helical cutting is commanded.
Z
Y
X
The feedrate along the circumference of two
circular interpolated axes is the specified feedrate.
Tool path
Z
Y
X
The speed command specifies the
feedrate along the tool path.
Tool path

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