DMG / Mori Seiki is making available a new integrated mill-turn center — the Mori Seiki NTX2000 — the latest addition to the Xclass series of machines it introduced in late 2010. At that time, the machine builder summarized its NHX Series as a line that will improve shops’ operating costs by reducing the number of machine parts. It said then that its X series machines are designed to reflect current market needs with features that include “high speed, high rigidity, high accuracy, energy saving, MAPPS IV + ESPRIT, (and) compliance with safety standards, and variations.”
The NTX2000 is a compact integrated mill-turn center with a maximum workpiece size of Φ660 mm×1,540 mm. The machine is capable of complex and high-precision machining, for example, cutting aerospace, medical equipment, and semiconductor parts. The builder emphasizes it is designed with Mori Seiki's original DDM (Direct Drive Motor), ORC (Octagonal Ram Construction) and BMT (Built- in Motor Turret) technologies, offering high-precision complete machining on small to medium sized parts.
It details that because Spindle 2 of the NTX2000 has the same specifications as Spindle 1, machining processes can be flexibly assigned to each spindle. The high-speed drive of a tool spindle with a feedrate of 40 m/min maximizes the advantage of a distance between centers of 1,500 mm.
The ORC (Octagonal Ram Construction) supports the tool spindle movement in the Y-axis direction. Because the Y- axis structure located close to the cutting point consists of slideways, heavy-duty cutting can be performed with less vibration.
The tool spindle is equipped with a built-in motor with output of 18.5/11 kW, which is equivalent to that of a No. 40 taper machining center. The NTX2000 machine with the tool spindle offers the highest level of milling.
The NTX2000 machine uses a rounded cover design of the X-class machines, as well as a slanted keyboard that offers improved operability.
Although the standard distance between centers is 1,500 mm, the machine width has been shortened by 1,000 mm and the installation area has been reduced by approximately 30% from our conventional machines.
To prevent thermal displacement in the spindle center, the NTX2000 Spindle 1 is designed to maintain its center in the same position, with a headstock whose front shape is symmetrical to the X- and Y-axis directions. Additionally, the slideways of the ORC, which are located diagonally opposite each other, distort symmetrically in response to heat, keeping the center of the moving parts in the same position. These thermal-displacement countermeasures allow the NTX2000 machine to be capable of high-precision machining.
The machine’s MAPPS IV high-performance operating system is installed on the operation panel. The combination of automatic programming software (standard) and ESPRIT CAM software (standard) allows the NTX2000 to handle complex machining programming with flexibility that matches operator’s objectives. In addition, the (standard) 3D interference checking function monitors collisions between spindles, workpieces, soft jaws, tools, holders, and turrets in 3D. If interference is detected, it stops the machine in both automatic and manual modes.
