Bringing together linear and rotary drive systems

24 July 2012

One of the highlights on the Beckhoff stand at the 2012 Hannover Fair was its new XTS drive system (eXtended Transport System).

The XTS drive system brings together the benefits of rotary and linear drive systems. The motor has been completely integrated together with power electronics and displacement measurement. One or more wireless movers can be controlled with high dynamics at up to 4 m/sec on a mechanical guide rail that promises almost arbitrary flexibility and opens the door to completely new machine concepts.

The mechatronic system contains the functions necessary for operation, including a modular, fully integrated linear motor with power electronics and displacement measurement in one device; one or more wireless movers as the moving parts; a mechanical guide rail; and an Industrial PC with TwinCAT control software.

Geometries, lengths and radii are flexible, and a wide variety of modular components are available. Complex wiring and drag chains can be eliminated. In addition, the position measurement system is already integrated. The machine footprint is fully and efficiently utilised, since the outward and return path as well as the curves can be used for active material transport. In this way, not only is hardware saved, but so is expensive production space. Speeds of up to 4 m/sec can be achieved with XTS while maintaining maximum positioning accuracy.

There are virtually no limits to the application possibilities of the system, says the company. The movers can accelerate, brake, position and synchronise themselves. They can take up absolute positions and positions relative to each other; they can group themselves and accumulate; they can create clamping forces in motion, drive through curves and along straights, recover energy through regenerative braking and use both the return paths and the outward paths for transport purposes.

The motor modules contain no moving parts and form a complete unit with the movers and guide rails. They contain the electromagnetic coils and all other active functions necessary for the operation of the system. The only other considerations needed are the power supply and an EtherCAT connection.

The mover contains magnetic plates which, together with the coils in the motor modules, can generate propulsive forces. It absorbs the attractive forces of the magnets on both sides and compensates them as far as possible. This means that the rollers on the movers, which are equipped with a particularly low-wear plastic surface, can move at high speed in the guide rails. A mechanically robust encoder flag conveys the mover position to the motor module.

Contact Details and Archive...

Related Articles...

Print this page | E-mail this page