NEXT-GENERATION CNC TURNING CENTER

Mazak's (Florence, KY) multi-tasking QUICK TURN NEXUS 250-II MY is a next-generation CNC turning center that provides uncompromised performance, advanced technology, productivity and value to job shops of all sizes.

The QTN 250-II MY's headstock features a 10 in chuck, mounted on a 35 hp, 4,000 rpm integrated motor main turning spindle for heavy-duty metal removal. The spindle is also used as a C-axis, capable of being indexed at 0.0001 deg increments to accurately position the part for square facing and slotting cuts and precisely drilled holes. The C-axis spindle is a full-function CNC controlled axis for milling.

The machine also features an NC servo-driven tailstock to enable automated processes. The tailstock is fully programmable, driving the W-axis on its own AC servomotor and ball screw. Through the part program, the tailstock will retract to a known position and its center makes contact with the part with consistent holding pressure. Further, because of its positive independent drive system, the tailstock can be used to drill holes on a shaft centerline adding versatility to the jobs it can process.

Another standard device is the Tool Eye, an automatic tool-presetting system. By bringing the tool tip into contact with the Tool Eye, offset of tool nose position, tool measurement, and data registration are done automatically, ensuring accuracy and reducing setup time. The Tool Eye also can be programmed to monitor tool wear on a periodic basis.

The new MX Hybrid Roller Guide System is integrated into the QTN 250-II MY to deliver levels of durability and reliability that result in long-term accuracy. The MX Hybrid Roller Guide System increases vibration dampening to extend tool life, handles higher load capacities, accelerates and decelerates quicker to shorten cycle times, consumes less oil for "greener" operations, and lasts longer with less required maintenance.

The sixth-generation MATRIX NEXUS CNC simplifies multi-tasking metalworking operations on the QTN 250-II MY. It offers a 12 in LCD color display and the familiar QWERTY keyboard. A pointing device, acting like a mouse, and USB port for downloading programs are also at the operator's fingertips. Conversational part programming can be accomplished while the machine is cutting another part, or off-line in a CAD/CAM system. Once imported into Mazak MATRIX, a realistic 3D cycle simulation verifies the machining cycle and checks for machine interferences, greatly reducing the need for test cuts.

A variety of automation strategies can be integrated with the QTN 250-II MY, from an automatic bar feeder to full robotic integration of either pedestal-mount or overhead-mount robot arms, driving required labor costs down and productivity up.

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