5 leverage of rolling friction, lower roll, 6 leverage of rolling friction, upper roll, 7 efficiency, roll mechanics – Lenze DSD User Manual
Page 166: 8 moment of inertia of the rolls, 7applications
7
Applications
7.15
Synchronous drive of squeegees
166
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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7.15.2.5
Leverage of rolling friction, lower roll
7.15.2.6
Leverage of rolling friction, upper roll
7.15.2.7
Efficiency, roll mechanics
7.15.2.8
Moment of inertia of the rolls
Symbol
Description
f
1
Lever arm of rolling friction
• Used for calculating the rolling resistance of the rolls with regard to the web.
• Value can be entered directly or selected from the "Physical coefficients" table.
Lever arm of rolling friction
Symbol
Description
f
2
Lever arm of rolling friction
• Used for calculating the rolling resistance of the rolls with regard to the web.
• Value can be entered directly or selected from the "Physical coefficients" table.
Lever arm of rolling friction
Symbol
Description
η
Brg
Efficiency
• Takes into account the overall mechanical losses, e.g. those resulting from friction between
the material belt and the roller, serrations on the roller etc.
Symbol
Description
J
Moment of inertia of the drive roll of the material to be conveyed (if relevant), etc.
• The moment of inertia has an effect on the dynamic torque!
• Value can be entered directly or calculated using the inertial calculator.