New Vertical Machining Centers From Doosan Displayed at IMTS 2016
Doosan Machine Tools has evolved its popular and field-proven “DNM” series of vertical machining centers and demonstrated them at this years IMTS show. According to Ron Kilgore, Doosan’s General Manager-Inside Sales, the new series is the third generation of this particular VMC line. “Some of the aspects of the new VMCs to highlight are that we’ve stepped up the speed with faster spindle acceleration and deceleration rates. We’ve also upgraded the Doosan Fanuc OiMF control, which provides quicker processing speed. Rigid roller guideways and a new grease-based lubrication system that requires a refill only every 3-6 months rather than every few days with oil, which cuts down on a customer’s time, expenses and also improves the factory environment and disposal issues. We also have supplied a cyclone coolant filter, which eliminates changing the conventional bag-type, which is easy to forget to do and problems can ensue. The new DNM VMCs are general purpose, workhorse machines for customers who need robust and accurate performance. In fact, we refer to them as the ‘Global Standard’.”
The new DNM series is comprised of three machines, the DNM 4500, 5700 and 6700, stepped up in size and capacity. In general the series offers larger cutting space by 6%, bigger table sizes by 14% and heavier loads by 25% while maintaining the same overall footprint as the previous generation. For the three models, the X-axis travel is 800mm (31.5in.), 1050mm (41.3in.), and 1300mm (51in.). Y-axis is 450mm (17.7in), 570mm (22.4in), and 670mm (26.4in). Z-axis is 510mm (20in.), 510mm (20in.), and 625mm (24.6in).
The new DNM series features direct-coupled, thru-coolant type spindles as standard, providing 8,000rpm (15/11 kW) and 12,000rpm (18.5/11 kW). Vibration and noise are greatly reduced during high-speed operations and thermal displacement is also improved. The direct drive spindles also contribute to faster accel/decel rates and tool change times have also been optimized to reduce non-cutting time. Tool storage ranges from 30 up to 60 stations. Additionally, the thru-the-spindle coolant design keeps the coolant exactly where it needs to be-at the tool tip-and machine operators do not have to keep adjusting and monitoring coolant nozzles.
Other specifications include a Big Plus 40 tool taper interface and table sizes of 1000 x 450mm (39.4 x 17.7 in.), 1300 x 570mm (51.2 x 21.3 in.) and 1500 x 670mm (59.1 x 26.4 in.). Maximum table loads are 600kg (1322.8 lbs.), 1000kg (2204.6 lbs.) and 1300kg (2866 lbs.).
One of the key highlights to mention about the control system is the standard “Easy Operation Package” (EOP), developed by Doosan that provides numerous functions designed for expedient operation via pop-up windows and “hot keys.” For example, adaptive federate control, tool management, tool load monitoring, table setup, tool changer recovery are among the several convenient choices. The DNM series also comes standard with a Renishaw OMI-2T optical probe interface. Easy operation of the feature is offered through a Renishaw/Doosan designed GUI.
About Doosan Machine Tools
Doosan Machine Tools started its business in 1976 and built its Changwon factory by 1979. Production of our first 1,000 units was achieved in 1980 after the introduction of the PUMA 10 series which was developed using our exclusive technologies.
Beginning in 1981, we pioneered the global market and achieved high-growth by reaching production of 10,000 units in 1990 and surpassing aggregate production of 50,000 units in 2000. By integrating the separate machine tools businesses of Doosan Machine Tools and Doosan Mecatec in 2007, we have not only increased our competitiveness in the global machine tools industry but have laid the foundation to become the Global Leader.
We are very proud of our achievements in supporting the development of key industries and the fact that we are now providing products to leading companies around the globe. I would like to thank all our customers for supporting such achievements through their sincere support and advice.
For more information, visit www.doosanmachinetools.com.