19 July 2011

Good news for manufacturers of large precision components

Mills launches new large capacity Doosan DNM range of vertical machining centres.

Mills CNC, the exclusive distributor of Doosan machine tools in the UK and Ireland, is launching the latest and largest range of Doosan's best-selling DNM vertical machining centres into the market.

The DNM 750 range comprises of two different size machine models – the DNM 750 and the DNM 750L. The range was launched by Doosan at its recently-held DIMF Show in May 2011 and will be one of the machines the company will be exhibiting on its stand at the forthcoming EMO Exhibition in Hannover (September 2011).

Says Mills' Technical Director, Andrew Jack:

'The new DNM 750 range is a natural progression for Doosan and complements the DNM 400, DNM 500 and DNM 650 ranges that have been introduced over the last two years – and which have proved to be so popular.'

Both machines are equipped with Doosan Fanuc controls and, apart from the longer X-axis capability available on the DNM 750L (2160-mm as opposed to 1660-mm on the DNM 750) and the DNM 750L's larger table (2160-mm x 760-mm), the machines share many technical and productivity-enhancing characteristics.

These include the machines' 18.5kW 12,000-rpm spindles (BT 40 Big Plus), their 30/40-position ATCs and their linear roller guide-ways (as opposed to ball-type). These roller guide-ways provide customers with maximum rigidity, better damping and, because roller guide-ways are less prone to deformation, improved accuracy.

The machines also feature ball-screw nut cooling and specially-positioned heat shields to protect the spindle, tools and work-piece from the effects of heat transfer.

Continues Andrew Jack:

'Doosan have packed a great deal of capability and functionality into the new DNM 750 series. This, plus their competitive price, will make them firm favourites with manufacturers machining large, precision components say in the aerospace sector where the ability to high-speed-machine materials like Aluminium and Steel will be of particular interest.'

The performance of the DNM machines can be further improved by a range of options that include -: automatic tool and work-piece measurement; chip conveyors; through-spindle-coolant and a high-speed contouring programme that delivers fast processing speeds and 200 Block Look-Ahead capability.