Doosan VMC from Mills features 2.1-m X axis

The exclusive distributor of Doosan machine tools in the UK, Mills CNC, is now offering the DNM 6700XL vertical machining centre, which features an X axis of 2.1 m.

This dimension is significantly longer than that offered by the standard DNM 6700 machine (1.3 m), while the work table is also larger, at 2200 x 570 mm.
DNM 6700XL machines are equipped with directly coupled 18.5 kW/15,000 rpm spindles as standard, which are said to minimise vibration and reduce noise, especially during high-speed machining operations. The spindles also have 20 bar through-spindle coolant capability.
Additionally, the machines feature Doosan Machine Tools’ proprietary thermal compensation system, which minimises the effects of heat generation and regulates thermal expansion.
Doosan’s DNM 6700XL boasts 36 m/min rapid rates in the X and Y axes, and 30 m/min in Z. Unproductive non-cutting times are further reduced via 30-position automatic tool changers (40 or 60-position options), which are recorded as having a tool-to-tool change time of 1.2 seconds.
Grease-lubricated axis travels (as opposed to oil lubrication) help to reduce maintenance costs by up to 60% and eliminate the need for oil skimmers. What’s more, grease cartridge systems only need replacing every 3 months, as opposed to oil-based systems that require more frequent servicing and manual intervention. Technical director Tony Dale says: “Some people say that size isn’t everything, but when you’re machining large parts – it makes all the difference. The introduction of the new DNM 6700XL is evidence of Doosan meeting market demand for a large, flexible and highly productive vertical machining centre.”
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