Lenze DSD - Manual (Page 72)

7 Applications
7.3 Belt drive, rotating
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Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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7.3 Belt drive, rotating
The vast majority of positioning systems require linear movements. If a rotating drive is used, the
rotation of the motor has to be converted into a linear movement. The speeds that can be achieved,
and therefore the dynamics of the positioning process and the repeat accuracy, and thus the quality
of the positioning process to a great extent are defined by the mechanics.
Characteristics of a rotating belt drive
• A motor actuates a belt pulley which in turn actuates a toothed belt. The mass to be moved,
which usually consists of a tool and the payload, is fastened to the toothed belt.
• Toothed belts allow for a higher speed, but a lower positioning accuracy of approx. 0.1 mm. The
positioning path is greater than that for the spindle, but it also is limited.
• Toothed belt drives are very often used in applications for material handling , since they offer a
high speed and an accuracy sufficient for this application.
Requirements with regard to a drive system for positioning
• High dynamic performance to achieve short positioning times
• High accuracy, according to the application
• High degree of reliability