Vertical Turning Center Machines Large Parts with 100-hp Spindle

The You Ji YV-600E2T vertical turning center, available from Absolute Machine Tools, is designed for large lot-size machining of big aluminum wheels or similar parts. Maximum swing is 33.4" and the maximum turning diameter is 29.5". This compact, high-precision machine can operate as a stand-alone machining cell or can be integrated with other machines to form a complete, flexible manufacturing system.

The rigid vertical column and base are made of Meehanite castings, heavily ribbed for reduced thermal distortion and improved vibration damping. The X and Z axes employ roller-type linear guideways. By using sliding covers inside the machine, problems with chips in the guideways are virtually eliminated, the company says. All ways are completely enclosed, while a forced lubrication system ensures precise production. The high-speed way systems enable rapid traverse rates of 787 ipm. The Class 3 ballscrews are driven directly by the servomotors, eliminating belts or gears, for more exact machining.

The spindle construction incorporates double roller bearings as well as 45-degree angular contact thrust bearings. It is also protected from coolant contamination. The NN-type spindle bearings support high centrifugal loads as well as high spindle loads. A 100-hp, high-torque motor drives the spindle via belts, providing power for heavy-duty machining and high speeds necessary for fine finishing. Twin six-position hydraulic vertical hex turrets are mounted on the rams with bolt-on tooling. Turret index time is 0.8 sec. with fast tool selection.

Chips and coolant wash directly into the standard caterpillar-type, right-side-discharge chip conveyor. The machine’s interior is sloped toward its front, directing the chips and coolant to the conveyor running across the front of the machine. A chip wash system aids in chip removal.

A FANUC OiT-F control provides ease of use and reliability. Other control options are also available.