
PROGRAMMING20. AXIS CONTROL FUNCTIONS
B–63534EN/02
560
–
+
Velocity
control (PI)
Position
control
Position gain
Cs
command
CNC
2
nd
spindle (Slave)
1
st
spindle (Master)
Position feedback
Velocity feedback
EGB mode
K2/K1 : Synchronous ratio
α : Feedforward ratio
Work–
piece
(Gear)
Built–in
motor &
Detector
Tool
(Hob)
K2
K1
+
+
α s
Velocity
control (PI)
Position
control
Position gain
Built–in
motor &
Detector
+
+
–
Position feedback
Velocity feedback
+
–
+
–
Cs
command
* The master axis can use the rotation command with spindle mode.
Fig. 20.8.3 (a) Block diagram for Spindle EGB control
G81 T_ L_ Q_ P_ ; Starts synchronization.
G80 ; Cancels synchronization.
T : Number of teeth (Specifiable range : 1 to 1000)
L : Number of hob threads (Specifiable range : –200 to 200 with 0
excluded)
Q : Module or diametral pitch
Specify a module in the case of metric input.
(Unit : 0.00001mm, Specifiable range : 0.01 to 25.0mm)
Specify a diametral in the case of inch input.
(Unit : 0.00001inch
–1
, Specifiable range : 0.01 to 25.0inch
–1
)
P : Gear helix angle
(Unit : 0.0001deg, Specifiable range : –90.0 to 90.0deg)
Explanations
Format