
B-63323EN-1/03 9.SPINDLE FUNCTION
- 909 -
5876 Positional deviation limit during movement in the servo mode using a
position coder
!##"#
0&&"1%
Set a positional deviation limit as shown in the following figure:
α
××
×××
=
G
Equation
60
5.1100360S
S : Maximum spindle speed for rigid tapping
G : Position gain for the rigid tapping axis
α : Detection unit
(Calculation example)
1 : 1 : 2
In the configuration shown on the left, the positional deviation limit is
obtained as follows:
@@S= 3600
@@G= 3000
@@L= 360°(The spindle rotates through one for each rotation
of the spindle motor.)
@
α = La / 4096
@@ = 720°/4096
@@ = 0.17578°
@ La= 720°
(The spindle must rotate through two turns to rotate the position
coder one turn = 360°×2)
60×3000×0.17578
3600×360×100×1.5
Setting =
=6144
SPINDLE
MOTOR
Spindle
Position
coder