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

PROGRAMMING
14. FUNCTIONS TO SIMPLIFY
PROGRAMMING
B–62754EN/01
148
G92X(U)__ Z(W)__ F__ ; Lead (L) is specified.
X/2
X axis
Z axis
R……Rapid traverse
F…… Specified by
F code
Z
L
1(R)
2(F)
3(R)
4(R)
Approx. 45°
(The chamfered angle in the left figure
is 45 degrees or less because of the
delay in the servo system.
r
W
Detailed chamfered thread
Fig. 14.1.2 (a) Straight Thread Cutting
In incremental programming, the sign of numbers following addresses U
and W depends on the direction of paths 1 and 2. That is , if the direction
of path 1 is the negative along the X axis, the value of U is negative.
The range of thread leads, limitation of spindle speed, etc. are the same
as in G32 (thread cutting). Thread chamfering can be performed in this
thread cutting cycle. A signal from the machine tool, initiates thread
chamfering. The chamfering distance is specified in a range from 0.1L
to 12.7L in 0.1L increments by parameter (No. 5130). (In the above
expression, L is the thread lead.)
In the single block mode, operations 1, 2, 3, and 4 are performed by
pressing cycle start button once.
14.1.2
Thread Cutting Cycle
(G92)

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