Detailed Product Description

CNC large tube sheet drilling machine has following characters:

1. Type:CNC drilling machine with moving gantry and distance between spindles can be adjusted with 12 spindles

2. Max. drilling specification

2.1 Max. drilling size(Length×Width)   7000×7000mm

2.2 Max. stroke of the drill    320mm

2.3 Drilling dia. ≤Φ50mm

2.4 Ceter distance of spindle (Can be adjusted)  326-342mm

3. Size of worktable (Length×Width):  Can meet the workpiece with the size   Φ7200mm

4. Drilling unit

    4.1 Type       Hydraulic sliding bush type

    4.2 Quantity  12

    4.3 Morse Taper Morse 4

    4.4 Max. distance from the end surface of spindle to the surface of worktable :700mm

    4.5 Rotate speed of spindle(Frequency conversion) 60-335r/min

    4.6 Motor power of spindle    12×7.5kW

    4.7 Working-feeding of spindle (hydraulic)   20-280mm/min

    4.8 Fast-feeding of spindle   3m/min

5. Longitudinal moving of gantry (X axis)

5.1 Drive mode of X axis: Guided by linear rolling guide. Both sides of the machine are synchro-driven with zero gear-backlash by AC servo motor, lower gear-backlash reducer, rack and pinion.

5.2 Stroke of X axis  ≥7000mm

5.3 Max. moving speed of X axis   8m/min

5.4 Servo motor power of X axis    2x2.8kW

6. Transverse moving of drilling unit (Y axis)

   6.1 No. of slide plate on which the drilling unit do transverse moving:   4

6.2 Drive mode of Y axis:

     Guided by linear rolling guide. Driven by AC servo motor and ballscrew through the rotary of the nut.

    6.3 Max. moving speed of Y axis  8m/min

    6.4 Servo motor power of Y axis   4×2kW

7. Precision

7.1 Positioning precision of X axis:  0.12mm/Whole stroke

7.2 Positioning precision of Y axis   0.08mm/ Whole stroke

8. Hydraulic system (With wind cooling to eliminate heat)

 8.1 Function:

    Control the fast-feeding, working-feeding and fast-withdraw of the cylinders used for the 12 spindles

8.2 Quantity    4

8.3 Pressure/ Flux of hydraulic pump   37Mpa/66L/min

8.4 Motor power of hydraulic pump       4×4kW

9. Hydraulic lock system

9.1Quantity   1

9.2Pressure/ Flux of hydraulic pump      3-7MPa/12.5L/min

9.3 Motor power of hydraulic pump                          0.75kW

10. Swarf conveyor and cooling

   10.1 Type of swarf conveyor                           Plate chain type

10.2 No. of swarf conveyor                                         2

10.3 Motor power of swarf conveyor                         2×0.75kW

10.4 Motor power of cooling pump                           2×0.75kW

11. Control system

11.1 Control type of electric part                            FAGOR8055

11.2 No. of CNC axis/ total motor power                       6/120kW

12. Size of machine (Length × Width × height)            About 10m X 10m X3.5m

13. Weight                                                  About 60t