Lenze DSD Manual do Utilizador Página 104

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7Applications
7.6 Spindle drive
104
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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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.
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