Lathe And Machining Center In One Package

Mori Seiki's NT Series of integrated mill-turn centers combines a lathe with a machining center. In designing the series, the company rethought the design and construction of multitasking machines to harness the turning ability of a lathe and the cutting ability of a machining center. The series employs both DCG (driven at the center of gravity) technology and the box-in-box construction of the NH Series horizontal machining centers, along with the turret with a built-in milling motor from the NL Series CNC lathes.

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Mori Seiki's NT Series of integrated mill-turn centers combines a lathe with a machining center. In designing the series, the company rethought the design and construction of multitasking machines to harness the turning ability of a lathe and the cutting ability of a machining center.

The series employs both DCG (driven at the center of gravity) technology and the box-in-box construction of the NH Series horizontal machining centers, along with the turret with a built-in milling motor from the NL Series CNC lathes.

Machines in the NT Series contain a B axis that uses a DD (direct drive) motor, which is said to eliminate backlash and make high speed rotation possible. Indexing specifications for the axis cater to high precision machining requirements, allowing for input by units of 0.0001 degree.

Maximum spindle speed is 5,000 rpm with a maximum tool spindle speed of 12,000 rpm. Additionally, the machines' automatic toolchanger features a tool-to-tool change time of 1 second and a chip-to-chip time of 3.4 seconds.

 

The lower turret is located symmetrically in relation to the center of the spindle, forming a construction resistant to the effects of heat. Ballscrews and motor jacket cooling have been implemented to completely eradicate inaccuracy caused by heat variations.

 

The NT Series will make use of MAPPS III, the latest iteration of the company's control system. MAPPS III allows fast processing and is equipped with a collision prevention function that monitors machine movements in real time, the company says.