Gun drilling and BTA Combined drilling machine (Model: ZK2108Fx2×2500mm )
Machine Operation: BTA Method (Internal chip removal ) , Gun drilling method (External chip removal). These two processing method cannot be used at the same time.
|Gun drilling diameter range||Φ4mm~φ30mm|
|BTA drilling diameter range||φ25mm~φ80mm|
|Max.Hole drilling depth||2500mm|
|Workpiece OD range||Φ50~Φ200mm|
|CNC control system:||GSK system|
- The machine adopts horizontal layout, using gun drill (External chip removal) and BTA (Internal chip removal) two processing methods, the two processing methods can not be used at the same time. For example, when using gun drill, BTA can not be used; workpiece is clamped on the machine by chuck and cone disc;cutter tool and workpiece rotate relatively, and cutter tool feed.
When the gun drill and BTA are converted, it is necessary to change the cutter, auxiliary tools and oil circuit manually, so that the conversion of the two processing modes can be realized.
The machine adopts double spindle structure. The gun drilling drill box and BTA drill box are assembled on one bracket and share one infeed system.
- Machine features:
- It has two processing methods: gun drill (external chip removal) and BTA (internal chipremoval). Double spindle structure, one spindle for gun drilling, the other spindle for BTAprocessing.
- Bed body, box body, worktable and other basic parts are cast with high quality cast iron.
- Equipped with special cooling system: composed of automatic chip conveyor, oil cooler, filtersystem, high-pressure pump group, etc.
- Z-axis feeding guide is double rectangular sliding guide with good rigidity.
- The spindle motor is used to drive the cutter tool rotation, and the feed of the tool is realized by the ball screw driven by the servo motor. Stepless speed regulation can be realized by rotating and feeding thecutter.
- Electrical system: it was controlled by CNC system, which can not only program and set up the automatic processing cycle, but also can adjust manually, point, start and close.
- The machine has the functions of pressure protection, liquid level and temperature protection of cooling system, tool protection and stroke protection.
Machine mainly Parameters:
Specification Parameters Note
Drilling diameter range
Gun drilling Φ4~Φ30mm BTA Φ25~Φ80mm Max.drilling depth 2500mm Max.workpiece length 2500mm Workpiece OD range Φ50~Φ200mm Machine Drill box for Gun Max.rotary speed 10000r/min Stepless performance drilling Main motor power 7.5KW Spindle motor
Drill box for BTA
Max.rotary speed 2000r/min Stepless Main motor power 30KW Spindle motor
Infeed speed range 5~500mm/min Stepless Rapid traverse rate 2000mm/min Motor torque 23Nm
Max.hole-Length ratio 100:1 Machine total powe(r roughly) 70kW Machine floor space(roughly) 9m(L)×3.4m(W) Machine total weight(roughly) 15T CNC system GSK
Gun drilling 10MPa BTA 5 MPa
Gun drilling 100L/min BTA 300 L/min Filtering accuracy 40μm