CNC deep hole drilling and boring machine

CNC deep hole drilling and boring machine, Max. drilling hole 80mm, Max. boring hole 250mm, Max. drilling/boring depth 10000mm.

TK2125A CNC deephole drilling and boring machine

Introduction: this machine is used for making deephole parts, feeding mechanism adopts double-slant rack with properties of high rigidity and wide machining range. Its main function includes drilling, boring(can bore blind holes) and rolling. After rolling the roughness usually can reach Ra 0.4. it adopts BTA method for drilling, and push-boring method for boring, the coolant is supplied by oil carriage. The clamping of workpiece by oil carriage is controlled by hydraulic system with properties of safety and easy operation. The machine is suitable for both large and small batch of processing of hydraulic cylinders, spindle holes, cylinder holes and coolant holes.

Main parts and function:

Bed: box-shape and three side sealed with slant tendon of high rigidity, the width of square guideway 650mm which is hardened and grounded. Double slant rack transmission mechanism ensures stable rigidity.

Hydraulic system: control the action of clamping and loosing

Feeding carriage: after decelerating by decelerating box by gear and rack, servo motor realize the feeding and rapid feed of feeding carriage, the rapid speed can reach 6m/min, decelerating box is amounted on the side of feeding carriage guide, one long shaft is pass through and realize synchronous moving, drilling and boring bar is fixed on feeding carriage, feeding carriage guide and double rack are equipped with automatic lubrication system.

Steady rest: planer-type three point independent steady rest is easy for adjusting.

Headstock and chuck body: according to user’s request, main motor can be three phase motor, spindle motor or vary-speed motor, for three phase motor the speed is changed manually, for spindle motor or vary-speed motor, the spindle speed is stepless with two gear. the spindle is connected with chuck body which can be connected with chuck or taper disk, there is a square hole on top of chuck body with purpose of chip-removal and tool adjusting and dispatching.

Coolant system: on rear of machine which it mainly used as cooling and chip-removal.

Oil carriage: there are two oil carriages one for drilling and another is for boring, the machining capacity of drilling oil carriage is φ25---80mm, the capacity of boring oil carriage isφ80—250mm, the main function of oil carriage is guiding for boring head and supply coolant, workpiece is clamped by chuck and taper disk for drilling and boring of small holes, and workpiece is clamped by two taper disk for boring large holes, the drilling oil carriage and boring oil carriage use the same base and easy to exchange, oil carriage is equipped with rapid mechanism.

Electrical system: the control system adopts FANUC OI-TC system, operation desk is amounted on oil carriage and be rotated in a certain range, easy to operate.

Max. boring diameter	φ250mm
Drilling capacity	φ25-80mm
Max. boring depth	1—8m ( length to diameter ratio 100:1)
Center height( from flat guideway to spindle center)	350mm
Spindle bore diameter	75mm
Front taper of spindle	φ85mm,1:20
Speed range and steps	70—1200r/min (12 kinds)
Feeding speed range	10—1000mm/min (stepless)
Rapid speed of feeding carriage	4000mm/min
Range of Workpiece diameter	φ40—350mm
Main motor	N=30Kw, n=1460r/min
Feeding motor	N=3.3Kw,α30/1200 A.C servo motor
Rapid motor of oil carriage	N=2.2KW, n=960r/min
Rapid speed of oil carriage	3000mm/min
Coolant pump motor	N=5.5KW n=1460r/min ( 3 sets) N=7.5kw n=960r/min
Hydraulic pump motor	N=1.5KW, N=1440R/MIN
Rated pressure of cooling system	2.5—6.3MPa
Flow of coolant	80,180,280,380L/min
Rated pressure of hydraulic system	6.3MPa
General motor power	N=61KW ( coolant pump 24Kw)

Main equipments: FANUC or SIEMENS 802D system, 3.3kwα30/1200 A.C servo motor, Germany ATLANTA high precision quenched slant rack and gear, hydraulic station with brand hydraulic valve

CNC deep hole drilling and boring machine