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Axis Drives

Services > Calculation / Design Criteria

Design of axis drives
The dimensioning of electric drives for machine tools has a crucial importance for the function and the cost of a drive package. So a useful power reserve is required, the same time oversizing should be avoided.

Requirements for a drive
Drive units of machine tools have to meet high requirements because they significantly affect the processing quality and productivity of your machine, for example:

  • high rapid traverse

  • high feed forces

  • high rigidity of the entire system

  • high short time overload (acceleration)

  • zero backlash

  • jerkfree over the entire speed range

  • high positioning accuracy

  • high dynamics

  • a small size and weight

  • good efficiency

  • maintenance-free and reliable

  • low cost


A central task in the design of a drive, it is following components and parameters

  • Sizing and determination of the servo motor

  • Definition of the translations of the transmission components

  • Diameter and pitch of the threaded spindle or diameter of the pinion (with rack and pinion drives)


set so, that the requirements are optimally fulfilled to the drive.

Axis drive with servo motor, planetary gear box and ball screw spindle
Axis drive with servo motor, planetary gear box and ball screw spindle
Rectangular axis drive with planetary gear box and pinion
Rectangular axis drive with planetary gear box and pinion

With modern controls, it is easily possible to operate several individual drives as one preloaded drive. This allows high acceleration and high thrust forces are achieved.

 
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