Precision Turning Center

The Puma 3100 turning center brings new levels of speed, convenience, precision and performance to Doosan Infracore’s (Pine Brook, NJ) family of high-power, horizontal turning centers.

 

Eliminating thermal deformation is among the more notable features of the Puma 3100. Its new thermal isolation system is designed to prevent machine-generated heat from reaching the bed or headstock. Strategically placed covers deflect heat away from sensitive areas, while fans exhaust heat from the machine. In addition, a 1.2 Hp multistage centrifugal pump delivers coolant at 65 psi which meets the criteria of most insert manufacturers. It is, also, sufficient to flush chips from drilled holes, reducing the need for peck drilling cycles. Coolant is stored in tanks ranging from 60 to 126 gallons depending on the model selected.

 

A Presci-Flex tooling system uses a single base holder configured to accept collets, end mill holders, expanding collet chucks, shrink fit tooling, Capto and KM system tooling. A conical and flat-face planar interface assures superior accuracy and rigidity. Interchanging pre-set tools reduces downtime to a minimum.

 

The Puma 3100 is suitable for parts as large as 16.5” diam. x 29.9” long (a model with an elongated bed extends part length to 50.4”), and accepts bar stock to 4” diameter. A 30 Hp motor drives the spindle at speeds up to 2,800 rpm and generates a maximum spindle torque of 828 ft-lbs.

 

A 12-staton turret selects BMT65 tools bi-directionally in 0.15 seconds. The turret is non-lifting to eliminate the possibility of contamination reaching the coupling. A 9” curvic coupling with 11,900 lbs of hydraulic clamping force provides high rigidity for heavy stock removal, fine surface finishes, long boring bar overhang ratios, and extended tool life. Rotating tools are powered by a 7.5 Hp motor, generating 34.7 ft-lbs of low-end torque, and speeds up to 5,000 rpm. A tool setter reduces set-up time by minimizing the need for manual skim cuts. Offsets are calculated and automatically entered into the program, eliminating clerical errors.

 

A one-piece, fine-grain Meehanite casting inhibits thermal deformation and twisting, and dampens shock and vibration. The bed is a true 30^o slant bed design to maintain minimal and constant distance between the tool tip and bed ways. This assures maximum rigidity and eliminates deformation under heavy loads. Widely spaced wrap-around guideways combine speed with long-term rigidity and accuracy. Each guide way is induction hardened, precision ground, bonded with a fluroplastic resin, and hand scraped for further vibration dampening and to provide an appropriate flow of lubricant along the guide way surface.

 

Additional standard features of the Puma 3100 include a way lube separation system, chip guarding, an 87^o swiveling operator’s panel, Fanuc embedded Ethernet function, and a tool monitoring system which monitors spindle and axis load while the axis is feeding. Both overload and underload conditions are monitored to assist in optimizing operating conditions. Also available is a programmable tailstock with a build-in live center for Y-axis models. Models are available with Y-axis, elongated beds, and live tooling. The controller is a Fanuc 0iTD.

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