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

PROGRAMMING
4. INTERPOLATION FUNCTIONS
B–62754EN/01
60
X
LX
α
LZ
Z
αx45° lead is LZ
αy45° lead is LX
Tapered thread
Fig. 4.8 (e) LZ and LX of a Tapered Thread
In general, the lag of the servo system, etc. will produce somewhat
incorrect leads at the starting and ending points of a thread cut. To
compensate for this, a threading length somewhat longer than required
should be specified.
Table 4.8 (a) lists the ranges for specifying the thread lead.
Table. 4.8 (a) Ranges of lead sizes that can be specified
Least command increment
p
0.0001 to 500.0000mm
0
.
0001
to
500
.
0000mm
p
0.000001 inch to 9.999999inch
0
.
000001
inch
to
9
.
999999inch

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