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

APPENDIX
B–62764EN/01
D. NOMOGRAPHS
873
Fig. D.2 (a) Incorrect threaded portion
δ
2
δ
1
R : Spindle speed (rpm)
L : Thread lead (mm)
* When time constant T of the
servo system is 0.033 s.
d
2
+
LR
1800 *
(mm)
d
1
+
LR
1800 *
(
1
–lna
)
+ d
2
(
1
–lna
)
Following a is a permited value of thread.
a
–1–lna
0.005 4.298
0.01
0.015
0.02
3.605
3.200
2.912
(mm)
(mm)
R : Spindle speed (rpm)
L : Thread lead (mm)
* When time constant T of the
servo system is 0.033 s.
R=350rpm
L=1mm
a=0.01 then
d
2
+
350 1
1800
+ 0.194
d
1
+ d
2
3.605 + 0.701
(mm)
(mm)
D.2
SIMPLE
CALCULATION OF
INCORRECT THREAD
LENGTH
Explanations
D    δ
D    δ
Examples

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