Lenze DSD - Manual (Page 104)

7 Applications
7.6 Spindle drive
104
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
7.6.2.2 Mass of the slide
7.6.2.3 Angle of tilt
7.6.2.4 Spindle efficiency
7.6.2.5 Spindle moment of inertia
7.6.2.6 Coefficient of friction of the guide rail
7.6.2.7 Velocity
Symbol Description
m
aux
Mass of carriage
• The spirally formed guide of the leadscrew thread moves the carriage.
• The mass of the carriage is used in the calculation of the inertial moment.
• By means of the mass calculator an alternative value can be calculated.
Mass calculator ( 405)
Symbol Description
β Angle of tilt (gradient)
• The value can be entered in degrees or as a percentage.
Symbol Description
η
Spl
Leadscrew efficiency
• If the efficiency is known it can be entered directly.
• The leadscrew efficiency can also be calculated from the coefficient of friction.
"Leadscrew efficiency" calculator ( 422)
Symbol Description
J
add
Moment of inertia of the spindle (without mass of the payload)
• The proportion of inertia by the mass of the payload is calculated separately by the creation
of the motion profile.
• Value can be entered directly or calculated using the inertial calculator.
Inertial calculator ( 407)
Symbol Description
μ
Gdn
Coefficient of friction of the guide rail
• If there are guide rails absorbing the payload mass, a value for the friction is to be entered.
• Value can be entered directly or selected from the "Physical coefficients" table.
Coefficient of sliding friction
Symbol Description
v Traversing speed
• Value is entered in the Motion dimensioning step.