Newburgh Engineering was so pleased with the performance of its Hartford PBM-115AG precision horizontal boring and milling machining centre that it has now installed a second identical machine from T W Ward CNC Machinery Ltd (Ward CNC).
The initial PBM-115AG was purchased specifically to process 1.7 metres long workpieces and, according to managing director David Greenan, 'the machine did exactly what it was supposed to do – which is why we have purchased another one'.
He continues: 'The new contract for the large cast iron parts demanded we used a heavy-duty machine that was robust and high quality, and would reliably and consistently operate day in, day out for a number of years.
'These characteristics had also to combine with the appropriate levels of service and support – we have sourced a number of machines from Ward CNC and therefore had first-hand experience of this - and, of course, the machine had to be value-for–money.'
The robustness of the Hartford five-axis (W+B) PBM-115AG is based on construction principles that use a single heavy-duty cast iron bed and a single ribbed alloy frame casting for the spindle head that allows the Z axis drive and spindle head to be mounted on the same centre line. The machine has heavy-duty hardened and ground solid slideways.
With 40-station ATC, the PBM-115AG has a table/pallet working area of 1.6 metres by 1.4 metres with travel in X, Y and Z axes of 2 metres, 1.6 metres and 1.5 metres, respectively, plus a W axis (spindle) travel of 500 mm. Rapid travel rate is 10 metres/min in the three main axes. The main spindle motor of 26 kW produces 3,000 revs/min.
Its user-friendly Hartrol Fanuc AI200 CNC features Hartrol advanced functionality programming routines, which embrace a series of easy-to-use cycles designed to simplify and speed up programming times and therefore reduce downtime, along with other useful setting and maintenance functions for ease of operator use.
To meet the customer’s requirement for 60 workpieces each week, the workload for the cast iron components was originally shared between Newburgh’s first Hartford and a selection of other machines. But the arrival of the second PBM-115AG means those other machines have now been switched to different contracts to enable the Rotherham-based precision machinist to meet a growing order book from customers in industries such as aerospace, oil and gas, rail, defence, power generation and nuclear.