GVF-1618 ( Fixed beam ) - Super Rigid Vertical Turning Center

SUPER RIGIDITY CONSTRUCTION

The fixed cross rail design is a reinforced rib column integrated with a cross rail that decreases wear and tear or damage problems, which greatly increase the rigidity of the head and dramatically enhance the ability of vibration suppression.

By using Finite Element Analysis ( FEA ), optimal reinforced ribbings are directly cast into the bed and column structure. Mechanical rigidity has been increased by more than 30% when compared to conventional designs. The GVF series is capable of performing super heavy-duty turning and maintain long-term super high precision accuracy. More rigidity also means extended tool life.

The super rigid bed and column are of MEEHANITE casting. It is capable of withstanding much greater stress without deforming and provides maximum vibration dampening.

Z-axis is balanced with 2 sets of hydraulic cylinder weights to minimize the workload of the servo motor and extend the lifetime of ball screws and bearings.

C3 class hardened and precision ground ball screws ensure the highest accuracy and durability possible. Plus, pretension on all axes minimizes thermal distortion.

The axial system has an AC servo motor direct drive to provide great thrust and fast acc. / dec. movement. Plus, it efficiently decreases motor load and reduces generation of heat while maintaining ultimate performance and accuracy.

Equipped with optional live tooling, it can operate as a turning-milling machine that provides multiple machining functions, such as turning, milling, drilling, and tapping.

The square ram on the tooling spindle has a closed-type design that gives the GVF series greater structural rigidity and machining accuracy compared to peer models with a semi-closed type square ram structure.

Ext ra wide hardened and ground box ways design provides the rigidity needed for heavy duty and interrupted turning applications.

Contact surfaces of all slides, spindles, ball screw bearing housings, bed and column are precision hand scraped to provide maximum assembly precision, structural rigidity, and load distribution.

WORK-PIECE SPINDLE

The workpiece spindle uses a high-torque 2-speed gear box mated with a FANUC αi series spindle motor to provide 23,900 N-m ( 17,600 ft-lb ) extra large torque output on the low speed zone and satisfy different machining requirements.

The rigid, cross roller spindle bearings can sustain radial, axial, and high torque loads while maintaining precision - even when the table has been carr ying a maximum load for a long period of time.

ULTIMATE C-AXIS CONTROL ( OPT. )

The optional Cf-axis and disk brake system available on the GVF series provide the most rigid and powerful type of C-axis on the market today. It has a worm gear drive system for high accuracy transmission and easy backlash adjustment. The indexing accuracy is up to 0.001°

LIVE TOOLING SPINDLE ( OPT. )

The BT50 live tooling spindle is equipped with an extra high power spindle motor with a 2 setps gear box and max. 2,400 rpm speed to meet a variety of different applications such as turning, milling, drilling and tapping.

Ø 90 mm ( 3.5" ) NN TYPE roller bearings provides high rigidity, high precision and long life span advantages.