West Caldwell, NJ - The Puma MX series mill-turn adds true milling capabilities to a powerful Daewoo turning center. The new design provides unmatched flexibility within a complete spectrum of part geometries. From simple turning or milling to complex, simultaneous, multi-axis machining, complex parts can be produced on one machine in a single setup. The dual spindle, multi-tasking Puma MX is built for heavy and interrupted cuts, long-term accuracy, and superior finishes.
The 12 station turning-tool turret is non-lifting to protect the coupling from chips and other contaminants, and indexes from station to station in a quick 0.2 seconds. Live or static tools can be mounted at any station, and oriented toward either the main or sub spindle. Live tools are powered by a 7.5 Hp motor with a maximum speed of 4,000 rpm. Polar coordinate, helical and cylindrical interpolations are standard.
Depending on the Puma MX model selected, the turning spindle is powered by either a 25Hp or 35Hp motor and driven at speeds up to 5,000 or 3,500 rpm respectively. The motor is built into the headstock casting with the armature on the spindle O.D. This beltless design eliminates backlash, feedback error and vibration, resulting in lower maintenance with superior precision and finish.
A combined B-axis (tilting) and Y-axis milling spindle maximizes the number of geometries that can be machined without the need for custom rotary tool holders. The Puma MX can cut, drill or tap above or below the centerline, or mill flats and key-ways. It can machine angular features, and provide a solid platform for heavy duty machining. A highly rigid, three piece curvic coupling locks at 15o increments, while the hydraulic brake system provides extra rigidity in 0.001o increments. The milling spindle is powered by a heavy-duty 20Hp motor, and generates spindle speeds up to 10,000 rpm.
Standard on the Puma MX is a 24 pot, fixed-station ATC, with 40 and 80 stations optional. Tool-to-tool change time is 1.5 seconds.
The bed and wrap-around, rectangular guideways are of fine-grain Meehanite casting to absorb vibrations, and inhibit thermal distortion and twisting. Each guideway is induction hardened, precision ground, and, before hand scraping, coated with Rulon 142 fluroplastic resin to reduce friction and eliminate wear. Three linear guideways on the upper carriage Z-axis provide rigidity and alignment during the toughest cuts without lift or torsion that might otherwise compromise accuracy. Consistent with all Puma machine tools, the bed's torque tube construction prevents twisting and distortion from heavy cuts, and provides a generous, machine-long conduit for fresh air.
Each axis is driven by a large diameter, double-nut Tsubaki ball screw, selected for its combination of accuracy, speed and feed thrust. An electric torque limiter protects the ball screws and minimizes damage in the event of a crash.
Among the standard features of the Puma MX is its automatic tool setter to measure tool offsets. The offsets are automatically computed and fed into the controller, eliminating the risk of data entry errors. Also included is the Daewoo Tool Monitoring System, which monitors spindle and axis load - both overload and underload - while the axis is feeding. Loads exceeding the wear settings either initiate an alarm, or switch automatically to a redundant tool. Exceeding the tool-breakage-load stops the machine and alerts the operator.
Puma mill-turns are available with dual spindles as the Puma MX2000ST and 2500ST, and as a single spindle with programmable tailstock as the Puma MX2500. Each accepts parts up to Ø21.5" x 40.2". The controller is a Fanuc 18i-T.
For additional information:
8 York Road
West Caldwell, NJ 07006