FANUC Series 16/18/160/180-Model C for Lathe Operator Manual

PROGRAMMING
14. FUNCTIONS TO SIMPLIFY
PROGRAMMING
B–62754EN/01
184
There are four grinding canned cycles : the traverse grinding cycle (G71),
traverse direct fixed–dimension grinding cycle, oscillation grinding
cycle, and oscillation direct fixed–dimension grinding cycle.
With a machine tool that allows canned cycles for grinding to be used, the
multiple repetitive canned cycle for turning cannot be used.
(1) (I)
(2)
(3) (K)
(4) (I)
(5)
(6) (K)
G71 A_ B_ W_ U_ I_ K_ H_ ;
A
B
U(dwell)
X
Z
A : First depth of cut
B : Second depth of cut
W : Grinding range
U : Dwell time Maximum specification time : 99999.999 seconds
I : Feedrate of A and B
K : Feedrate of W
H : Number of repetitions Setting value : 1 to 9999
W
(dwell)
The specification ranges and units of the canned cycle for grinding are
described below.
Move command Range :
±8 digits
Units : 1 µ
/0.0001 inch
0.1
µ/0.00001 inch
Feedrate Range
Feed per minute : 0.001 to 240000 mm/min
0.0001 to 9600 inch/min
(for 1
µ/0.0001 inch)
Feed per revolution : 0.00001 to 500 mm/rev
0.00001 to 9 inch/rev
A, B, and W are to be specified in an incremental mode.
In the case of a single block, the operations 1, 2, 3, 4, 5, and 6 are
performed with one cycle start operation.
A=B=0 results in a spark–out.
14.4
CANNED GRINDING
CYCLE
(FOR GRINDING
MACHINE)
14.4.1
Traverse Grinding
Cycle (G71)
Format
Explanations

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