Robotic investment improves manufacturing quality of modular bridges

Bridge and engineering services specialist, Mabey is investing £2.6million in robots at its site in Lydney, Gloucestershire. Forming one complete cell, the robots will support the manufacture of the Mabey Compact 200 (C200) – the world’s most widely used modular steel bridge.

The investment in the robots will enable Mabey’s C200 bridging system to be manufactured more quickly, more safely and more efficiently. Once operational, Mabey claims that the manufacturing time for the C200’s panels and chords will be nearly halved.

Existing automated welding systems perform several functions in the current manufacturing process including making the panels and chords of the C200 bridges, with smaller welds being completed by hand. Panels are also manually transported between three separate machines.

In contrast, the new robots form one complete cell to manufacture both chords and panels, thereby removing the intermediary steps.

An employee will load the raw materials, at which point the robots take over and manoeuvre the heavier components, weld all sections together and make it ready for drilling. This process is said to require the same amount of manpower as before and it is claimed that there will be no reduction in head count when operational.

Michael Treacy, chief executive of Mabey Bridge, said: “The robots will reduce health and safety risks by removing manual lifting and handling whilst enhancing the quality of the weld, guaranteeing consistency and increasing output. In addition, the robots also reduce the need to reach and weld the more awkward places further improving quality.”

The robots are currently being installed and will be fully operational by March 2017, ensuring that the factory has the capacity to manufacture up to 2km of steel bridging a month.