KF7700BII | KF7700B/50II
The fastest and most versatile KF7700BII vertical center in high precision and rigid linear machining.
- High power/torque main spindle for Vertical Center KF7700BII superb heavy duty cutting
- Box guideways for exceptional traveling during heavy duty cutting
- Enhanced chip processing capabilities by applying the upper-type conveyor
- Various motors and columns provided for customized machining
- Improved user convenience by applying the latest controller of FANUC
Structure
High-Rigidity Design For Column & Bed
The stable design of column assembly surface on bed top enables securing the fundamental rigidity of the structure.
Guideway
The KF-B II Series are equipped with box guideways to enable distributing its feeding force evenly to each slideway. It boasts excellent rigidity, a stable feed structure, and an increased box guide slideway, thus providing an excellent heavy-duty cutting performance.
Double anchored ball screw
The pretensioned ball screw minimizes the expansion and contraction according to the heat and further reinforces the rigidity by the double anchor support method. In addition, the coupling of the ballscrews and the highly reliable digital servo motors are connected by metal plate
couplings, to reduce coupling breakage and backlash.
Spindle
Direct Driven Spindle
The directly coupled spindle at a maximum revolution of 12,000rpm, allows highspeed processing. Additionally, the large diameter and the thickness of the spindle add to the stability of the machine.
BBT40 coupling
The Big Plus shaft system (BBT40) ensures double contact between the shaft and the tool holder.
Spindle Cooling
The spindle cooling system minimizes thermal displacement which can happen during lengthy machining operations, and offers continued accuracy based on the thermal stability
Through Spindle Coolant (20/30/70 bar)
Through Spindle Coolant is exceedingly useful when drilling deep holes. It helps increase the lifetime of the tool, while decreasing cycle time. The improved quality of rotary joint prevents oil leakage
High Rigidity, Tool Change System
High Speed ATC
Position control through twin arm ATC on servo motors has been
improved drastically. In addition, tool exchanging has become
easier, reducing specific cutting time tremendously. Position control on the Twin Arm ATC has improved drastically. The twin arm ATC enables faster tool change and increased productivity
Magazine
A magazine that can attach various tools between 24~40 EA was
adopted to increase the range of selection for machining tools,
and the overall size of the magazine was reduced to reduce vibration during magazine rotation to improve surface finishing.
Interior Screw Chip Conveyor
Dual screw type chip conveyors are located at each side of the bed which makes it convenient to remove chips. The interior screw and the chip conveyor operate at the same time and can be controlled separately at the time of prior consultation.
(Three screws for rear-type conveyor: 2 sides + 1 front)
Furthermore, chip disposal capability significantly has been improved due to optional bed-flushing coolant.
Technical Specification KF7700B II
| Table Size [mm] | 1,650×760 |
| Max. Load Capacity [kg] | 1,500 |
| Spindle Driving Method [tip] | Direct |
| Spindle Taper [tip] | BBT40 |
| Spindle RPM [r/min] | 8,000 |
| Spindle Power [kW] | 15/11 |
| Spindle Torque [Nm] | 286/143 |
| Travel (X,Y,Z) mm | 1,500/760/635 |
| Rapid Feed Rate (X/Y/Z) [m/min] | 30/30/24 |
| Slide Type [tip] | Box |
| No. of Tools | 30 |
| Tool Change Time (Chip To Chip) [sec] | 3.7 |
Technical Specification KF7700B/50 II
| Table Size [mm] | 1,650×760 |
| Max. Load Capacity [kg] | 1,500 |
| Spindle Driving Method [tip] | Direct |
| Spindle Taper [tip] | BBT40 |
| Spindle RPM [r/min] | 8,000 |
| Spindle Power [kW] | 15/11 |
| Spindle Torque [Nm] | 286/143 |
| Travel (X,Y,Z) mm | 1,500/760/635 |
| Rapid Feed Rate (X/Y/Z) [m/min] | 30/30/24 |
| Slide Type [tip] | Box |
| No. of Tools | 24 |
| Tool Change Time (Chip To Chip) [sec] | 5.5 |