Operating instructions

22 Application manual Positioning 04/08
Example: Linear axis, drive via gearbox
Gear
Revolutions o
f
g
earbox output sha
f
t
R
e
v
o
l
u
ti
o
n
s
o
f m
o
t
o
r
s
h
a
ft
Feed
Gear Box: Driving shaft revolutions 1116
Gear Box: Motor shaft revolutions 1117
Feed rate of linear axis: 25 mm per revolution of the output shaft
Required positioning accuracy: ±1/100 mm
Gear factor: 1/19.75
2500
mm 1/100
mm 25
Accuracy
rate Feed
Constant Feed ===
mm 0.01 unit 1 =
Set Feed Constant 1115 to 2500 u/U.
1975
100
19.75
1
factorearG ===
1117
1116
srevolution Motor:Box Gear
srevolution Shaft:Box Gear
Set Gear Box: Driving shaft revolutions 1116 to 100.
Set
Gear Box: Motor shaft revolutions1117 to 1975.
[]
()
[
]
m 9.41mm 87841units 8481874
1975
U
Ink
2
100
U
u
2500Ink 12
us
16
31
max
±≈±≈±=
⋅
⋅⋅ − ±
=
Example: Rotary table
Revolutions o
f
rotary table
Revolutions of motor shaft
Gear Box: Driving shaft revolutions 1116
Gear Box: Motor sha
f
t revolutions 1117
Turning angle (feed) of rotary table: 360°
Required positioning accuracy: ±1/10 °
Gear factor (Ratio of belt drive
wheel diameters): 2.45 m/0.18 m
3600
1/10
360
Accuracy
rate Feed
Constant Feed =
°
°
==
Set Feed Constant 1115 to 3600 u/U.
Application manual Positioning 04/0822