CNC Deep Hole Drilling And Boring Machine

Specifications

This machine is used for making deep-hole parts. Double-slant rack feeding mechanism with high rigidity and wide
machining range. Its main function includes drilling, boring (can boring blind holes) and rolling. The roughness usually
can reach Ra0.4 after rolling. BTA method for drilling, and push-boring method for boring, the coolant is supplied
by oil carriage. The clamping of workpiece and oil carriage are controlled by hydraulic system with properties of
safety and easily operation. The machine is suitable for both large and small batch of machining hydraulic cylinders,
spindle holes, cylinder holes and coolant holes.

Main structure:

Bed: box-shape and three sides 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---100mm, 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 CNC system, operation desk is amounted on oil carriage
and be rotated in a certain range, easy to operate.

Main specifications:

Max. boring diameter:  Φ250mm
Drilling diameter:  Φ25-Φ80mm
Max. boring depth: 1-8m (length to diameter ratio 100:1)
Center height(from flat guideway to spindle center): 350mm
Spingdle bore diameter: Φ75mm
Front taper of spindle:  Φ85mm 1:20
Speed range and steps: 70-1200rpm, 12steps
Feeding speed range: 10-1000mm/min (stepless)
Rapid speed of feeding carriage: 6000mm/min
Range of workpiece diameter: Φ40-Φ350mm
Main motor: N=30kW, n=1460rpm
Feeding motor: N=3.3kW, α 30/1200 A.C servo motor
Rapid motor of oil carriage: N=2.2kW, n=960rpm
Rapid speed of oil carriage: 3000mm/min
Coolant pump motor: N=5.5kW, n=1460rpm (3 sets) N=7.5kW, n=960rpm (1 set)
Hydraulic pump motor: N=1.5kW, n=1440rpm
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)

Max. Boring Depth:

905-0501: 1000mm

905-0502: 2000mm

905-0503: 3000mm

905-0504: 4000mm

905-0505: 5000mm

905-0506: 6000mm

905-0507: 7000mm

905-0508: 8000mm

Main equipments:
* FANUC Oi CNC system;
* 3.3kw α30/1200 A.C servo motor;
* Germany ATLANTA high precision quenched slant rack and gear;
* Hydraulic station with high quality brand hydraulic valve.