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

PROGRAMMING
B–62764EN/01
5. FEED FUNCTIONS
97
1. Between linear movements
θ
θ
θ
θ
2. Between linear and circular movements
(angle between the linear movement
and tangent to the circular movement)
3. Between circular movements
(angle between the tangents to
the circular movements)
The machining angle is compared with the angle specified in parameter
(No. 1740) for movements on the selected plane only. Machining
feedrates are compared with that specified in parameter (No. 1741) for
movement along the first and second axes on the selected plane only. This
means, when movement occurs along three or more axes, only that
movement along the first and second axes on the selected plane is
considered.
Corner roundness is determined by the angle and feedrate specified in
parameter (Nos. 1740 and 1741). To always make a sharp corner, set
the angle to zero and the feedrate to 180000 (equivalent to 180
degrees).
When G90 (exact stop) is specified, exact stop is performed irrespective
of the angle and feedrate specified in parameter (Nos. 1740 and 1741).
Those parameters related to automatic corner deceleration in look–ahead
control mode are shown below.
Parameter description
Normal
mode
Look–ahead
control
mode
Switching the methods for automatic corner de-
celeration
No.1602#4
Lower limit of feedrate in automatic corner decel-
eration based on the angle
No.1777 No.1778
Limit angle in corner deceleration based on the
angle
No.1740 No.1779
This function cannot be enabled for a single block or during dry run.
D Selected plane
D Corner roundness
D Exact stop
D Look–ahead control
Limitations

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