The two machines - the DVF 6500 (650 mm diameter table) and the larger capacity DVF 8000 (800 mm diameter table) - are from the same stable as Doosan DVF 5000 machine successfully launched in the UK and Ireland 18 months ago.
The new DVF machines share many similarities. Both machines are compact and have a rigid and stable structure for increased accuracies, improved surface finishes and greater process reliability. They are also fast, boasting 45 m/min rapid rates and are equipped with oil-cooled, directly-driven BT40 spindles (up to 22 kW/18,000 rpm) that deliver excellent cutting performance, irrespective of whether undertaking 3+2, 4+1 or full 5-axis simultaneous machining.
The machines also feature servo-driven automatic tool changers (up to 120 tools) with a 1.3 second tool-to-tool time, roller LM guideways that deliver increased speed, accuracy and reliability, and direct-drive rotary tilting tables (A-axis = +120/-120 degrees; C-axis = 360 degrees).
The DVF 6500 and DVF 8000 machines can be supplied with a choice of control (FANUC 31iB5, Heidenhain TNC640 or Siemens 840D with ShopMill software) and are supplied with thermal compensation systems (spindle and structure) and a long-life, grease lubrication system. A Collision Protection System can also be supplied as an option.
Both machines can also be supplied with a range of different automation solutions that increase their productivity and enable manufacturers to take advantage of unattended and lights-out operations.
The two machines differ in size to the DVF 5000, of course. The DVF 6500 has X, Y and Z travels of and 750, 785 and 600 mm, respectively; the DVF 8000’s figures are 1,000, 900 and 685 mm. Table loads are up to 1,000 kg and 1,400 kg respectively.
Within the DVF 8000 range, a specific ‘Turning’ model can be specified. The DVF 8000T, with its integrated function, has the same technical specification as the DVF 8000 in most respects, except for a lighter maximum table load of 700 kg and a faster C-axis feed rate of 600 rpm.
Says Tony Dale, Mills CNC’s Technical Director: “The depth and breadth of Doosan’s already highly successful 5-axis machining centre range is second to none. The introduction of these two new models will be of interest to component manufacturers looking to improve their productivity and make ‘one-hit’ machining a reality.”