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Milling phenomena

Interior of a DNM vertical machining centre from DN Solutions

DN Solutions’ DNM 4500, 5700 and 6700 (Fourth-Generation) 3-axis vertical machining centres from Mills CNC provide component manufacturers with excellent cutting performance, fast processing speeds, guaranteed accuracies and unrivalled machining flexibility.

A firm favourite with manufacturers, both large and small, these machines with their rigid design and build, large work envelopes, powerful spindles, generous-sized tool changers and choice of control are used extensively by manufacturers in the aerospace, defence, automotive, motorsport, oil and gas, power generation and medical sectors…to name but a few.

Visit any UK or Irish component manufacturer and you’ll no doubt see at least one DN Solutions’ high-performance DNM vertical machining centre hard at work, performing everything from roughing out cast iron engine blocks to the super-fine finishing of stainless steel medical components…and everything in-between. 

Standard-sized DNM 4500, 5700 and 6700 (Fourth-Generation) machines, and their long-bed versions, are equipped with powerful, directly-coupled spindles (18.5kW/12,000– 15,000rpm/118N-m) that deliver increased accuracies and reduced vibration even during heavy-duty operations. Improved thermal compensation capabilities and roller-type LM guides also help maintain part accuracies over extended periods of operation.

All models feature generous-sized worktables (up to 1500mm x 670mm on the DNM 6700), with high load capabilities (i.e.,1300kg table load on the DNM 6700), making them equally adept at machining large workpieces or multiple (smaller) parts, quickly and accurately.

Fourth-Generation DNM models have good-sized ATCs (up to 60-tools) and boast fast tool-to-tool changeovers (1.2 seconds), thereby reducing non-cutting times and improving productivity. Further reliability and process efficiency is guaranteed by a new, innovative shutter that protects the ATC from swarf ingress.

The machines can be supplied with the latest Fanuc, Siemens or Heidenhain controls with operator and programmer training provided by Mills CNC’s Training Academy. Mills can also supply a range of accessories (i.e., 4th-and 5th-axis units) to increase DNM machines’ performance and machining flexibility and all models can be integrated with a range of different automation options that include DN Solutions’ AWC (Automated Workpiece Pallet Changer) or Mills’ SYNERGi (industrial robot) systems. 

DNM machining centres are a proven and reliable milling solution and are always in demand. Owing to their popularity, large numbers are held in stock at Mills’ Campus facility in Leamington and are regularly showcased at events and exhibitions Mills attends each year.

“DNM 4500, 5700 and 6700 machines, available with a choice of control, have always been amongst our best-selling machine tools, and the recent introduction of the new Fourth-Generation series will, I’m sure, only increase their appeal.

“Sales of all new (Fourth-Generation) DNM machines to date have been encouraging, and the DNM 5700 model is worthy of special mention.”

Tony Dale, Group CEO of Mills CNC

DNM 5700: a versatile machining centre with universal appeal

AEP Precision Engineering, a leading precision engineering specialist based in Newhaven, West Sussex and the CNC machining subsidiary of parent company, Smith Metal Fabrications, has recently invested in a new DNM 5700 equipped with a 4th-axis unit.

Components machined on the company’s DNM 5700 are predominantly processed in low volumes (i.e., prototypes and one-and two-offs through to small batch series), and are made from a range of different materials that include mild steel, stainless steels (i.e., Stainless 316), aluminium, brass, bronze, copper, engineering plastics etc.

A specific job, one of many machined on the new DNM 5700 to date, involved the machining of 20 decorative metal rosettes for a pair of replacement doors for Trafalgar House, London and was a part of a larger, high-profile refurbishment project.

“The new DNM 5700 machine is proving to be a great investment. The machine delivers everything we expect from it, and the fact that it is backed by Mills’ after-sales service and support, gives us peace of mind.”

David Mayers, Director of Smith Metal Fabrications

Similarly positive vibes can be gleaned from Custom Metalworks, a new precision engineering specialist start up business located in Ormskirk, Lancashire, that invested in its new DNM 5700 equipped with a 5th-axis rotary table, tool and table probing systems and an oil mist extraction unit, last year.

The new machine has been put through its paces machining a range of performance-critical plastic components for a leading manufacturer of innovative patient positioning products and equipment.

“I was looking for a machine that delivered fast processing speeds, high accuracies and good surface finishes, and that would enable us to machine large and/or smaller multiple parts in a single set up.

“The DNM 5700, with its advanced spindle technology, rigid and thermally-stable build, fast rapids and large working envelope offered the ideal solution.”

Jack Eckersley, Owner and Managing Director of Custom Metalworks

From OEMs and Tier One companies through to precision subcontract specialists, DN Solutions’ DNM vertical machining centres from Mills CNC are proving their worth and have cemented their position as the preferred 3-axis milling solution for many, if not most, component manufacturers.