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Expertise in machine tool building<br />
The drives for linear and rotary axes for titanium cutting must comply with the following<br />
requirements:<br />
High stiffnesses and high thrust forces<br />
Smooth run and close following of control setpoints<br />
Acceleration and velocity levels to comply with lasted tool technology<br />
All of this is accomplished for the Starrag drive concept the following way:<br />
Linear axes<br />
– Ball screws are used (no excitation of the drive due to the use of gear wheels)<br />
– Due to hydraulically releasable thrust bearing the stiffness of the drive chain is doubled<br />
(in comparison to conventional bearings)<br />
Rotary axes<br />
– Worm wheels are used (no excitation of the drive due to the use of gear wheels)<br />
– Contact zone provides extraordinary damping<br />
Belt transmissions<br />
– Between drive motors and ball screws/ worm wheels a belt transmission is used<br />
– Belt transmissions provide extra damping<br />
– Transmission ration allows for layout simultaneous for good control behavior,<br />
high thrust forces and high acceleration levels<br />
Starrag<br />
Dörries Heckert Scharmann SIP Droop + Rein TTL Berthiez WMW Ecospeed<br />
7
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