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Wednesday, August 20, 2014

New CNC Turning Centers Use 3D Controls

DMG Mori Seiki has introduced two new CNC turning centers that can utilize one of three types of 3D control technologies.

Called the CTX 450 ecoline and CTX 650 ecoline, they are the first jointly developed lathes since the companies merged in April 2010. Despite being entry-level m

DMG Mori Sieki's latest CNC Turning Centers utilize multiple types of 3D control technology. Credit: DMG Mori Sieki.

DMG Mori Seiki’s latest CNC turning centers utilize multiple types of 3D control technology. Credit: DMG Mori Seiki.

odels, they have a rigid design for dynamic, highly accurate metalcutting. The machines come with a choice of three 3D control technologies: SLIMline with Operate 4.5 on a Siemens 840D solutionline, Heidenhain CNC PILOT 640, or MAPPS IV on Mitsubishi.

Setting the machine apart from their competitors are an FEM-optimized cast iron bed, large ballscrews, linear guideways for high rigidity and top positioning accuracy, and small footprints of 4.9 sq m and 9.8 sq m respectively.

CTX 450 ecoline operates at spindle speeds up to 4,000 rpm, while the CTX 650 ecoline, with its water-cooled motor, provides maximum torque of 2,000 nm for heavy machining.

Both lathes have a servo driven tool turret with 12-stations, all of which can operate simultaneously to carry out complex prismatic machining in-cycle in conjunction with the C-axis. The CTX 450 ecoline uses VDI 40 holders and the CTX 650 uses VDI 50 holders. Tool changes take only 0.4 seconds and rapid traverse in all axes is 30 m/min, contributing to short idle times.

Regenerative braking of the spindle and axis drives saves energy. Linear guideways minimize friction and also reduce energy consumption through the use of smaller motors. The machines also use less lubricant, which further mitigates environmental impact.

The CTX 450 ecoline can be fitted with the chip conveyor at the back rather than at the side, reducing the installation width of the machine by up to 35 percent.

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