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

4.INTERPOLATION FUNCTIONS PROGRAMMING B-63324EN/03
- 116 -
N1
N2
N3 N4
N5
N6
N7
N8
N17
N16
N14
N13
N11
N12
N15
N10
N9
Linear interpolation
Interpolated by smooth curve
Linear interpolation
Interpolated by smooth curve
N1
N2
N3 N4
N5
N6
N7
N8
N17
N16
N14
N13
N11
N12
N15
N10
N9
Fig.4.16 (c) Smooth Interpolation and Linear Interpolation
- Conditions for performing smooth interpolation
Smooth interpolation is performed when all the following conditions
are satisfied. If any of the following conditions is not satisfied for a
block, that block is executed without smooth interpolation then the
conditions are checked for the next block.
(1) The machining length specified in the block is shorter than the
length specified with parameter No. 7672 and longer than that
specified with parameter No. 7675.
(2) The difference between the angles specified in blocks is smaller
than the value specified with parameter No. 7673.
(3) The tolerance specified in the block is smaller than the value
specified with parameter No. 7676 and larger than that specified
with parameter No. 7677.
(4) The modes are:
G01 : Linear interpolation
G13.1 : Polar coordinate interpolation cancel
G15 : Polar coordinate command cancel
G40 : Cutter compensation cancel
(except for 3-dimensional tool compensation)
G64 : Cutting mode
G80 : Canned cycle cancel
G94 : Feed per minute
(5) Machining is specified only along the axes specified with
G05.1Q2.
(6) The internal algorithm of the CNC judges the block to be suitable
for smooth interpolation.

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