Lenze DSD - Manual (Page 103)

Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
103
7 Applications
7.6 Spindle drive
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7.6.1.1 Symbols used
7.6.2 Data for the entry
7.6.2.1 Leadscrew pitch
Symbol Description Dimension unit
a Acceleration (translatory) m/s 2
d
Spl
Friction diameter of the spindle mm
F
μ
External friction force N
F
vs
Counterforce N
F
sum
Total translatory force N
F
App
Force of slide on the spindle N
F
App,η
F
App
, taking the spindle friction into consideration N
g Gravitational acceleration (g = 9.81 m/s 2 ) m/s 2
h
Spl
Leadscrew pitch mm
J
add
Additional moment of inertia, e. g. of the spindle kgm 2
J
L
Moment of inertia of load kgm 2
J
sums
Total moment of inertia kgm 2
l
Spl
Spindle length mm
m
L
Mass of the payload kg
m
aux
Mass of the slide kg
m
sum
Total mass kg
M
App
Required torque of the application Nm
ρ Density of the spindle material kg/dm 3
r
res
Resulting radius of the spindle m
s Path (translatory) m
v Speed (translatory) m/s
α Angular acceleration rad/s 2
β Angle of tilt °
η
Spl
Spindle efficiency
ϕ Angle rad
μ
Gdn
Coefficient of friction of the guide rail
μ
Spl
Coefficient of friction of the spindle
ω Angular velocity rad/s
Symbol Description
h
Spl
Path moved per spindle revolution