2 Spindle Gundrilling Machine

Basic Info

description
processing method:  gun drill and external chip removing
cnc system: fanuc oi mate tc / gsk980tdc (optional)
drill stem: rotary and feed, frequency speed adjustment
workpiece:  cnc indexing
guide sleeve: axial fixed and hydraulic driven
clamping: the left side of workpiece is clamped by hydraulic chuck, the right side is supported by
hydraulic center frame. workpiece can be around axial line indexed. simultaneously
drill two workpiece.
main parameter
drilling ability

no. of spindle: 2 pcs
distance between spindle:   207mm
drilling diameter range:  15 mm
max. drilling depth:  1000 mm
wokrpiece diameter range:  270 mm
max. length of workpiece:  1000 mm
bench lateral moving distance:    200mm
drilling speed

max. drill stem rotary speed:  5500 r/min
feed speed range: 1500 mm/min
fast move speed    2000 mm/min
drilling accuracy

skewness:  1.0/1000 drilling depth(length to diameter ratio100)
dimensional accuracy:  it7~it11
roughness:  ra0.8~ra3.2   
machine power

power of drill stem motor:  5.5 kw
power of workpiece's indexing servo motor:  1.2 kw  7.0 m.n
oil pump motor:   7.5kw
power of feed motor:  1.2 kw  7.0 m.n
power of oil cooling machine:  3.5 kw
total power:   29kw
hydraulic system

max. flow:    80 l/min
max. pressure:   12 mpa
filter accuracy:   20 um
oil tank capacity:     1360 l
basic dimension & weight

ground area:(l*w*h)    3100*2700*1800 mm
distance between drill stem center and ground:   1070 mm
weight of hydraulic system:   2.5 t
weight of main engine:  5 t

Product Description

The series is mainly used in drilling deep hole of long axial parts or other types of parts with big length to diameter ratio. Besides drilling concentric hole, through bench’s lateral moving and CNC indexing structure, realized drilling eccentric hole, indexing hole and multi holes on different position.