China Zk21xxg CNC Deep Hole Drilling Machine

ZK21xxG CNC deep hole drilling machine

This machine is a special purpose CNC deep hole drilling machine with high efficiency, high accuracy and high automatization, by metal chips external removing method (gundrill method), once continued drilling can replace drilling, boring and reaming etc. many machining procedure, and obtain the same machining accuracy and surface roughness. controlled by CNC system, not only has the machine single moving function, but also automatic cycle function. therefor it is suitable for both small and large batch production. This machine can drill through hole, blind hole and step hole, mated with special holders, it can also drill eccentricity hole and slant hole.

Characteristic of the machine
All the bed and boxes of the machine adopt fine casting, so they have good rigidity and stability.
The cutter need not untread during machining.
Controlled by CNC system, the automatization is high.
The movement of the cutter adopt rolling linearity guide way.
The clamp of the workpiece adopt high precision chuck and hydraulic steady rest so as to realize self centering clamp accurately.
The Min. drilling diameter is Φ2mm.
Feed system is diven by AC servo motor and ball screw couples with stepless speed.
The spindle speed of the travel headstock with rotating drilling bar is stepless.
Spindle bearing and surface of guide way are lubricated intermittently.
High pressure coolant system adopt frequency converting motor to drive gear pumps, and adopt immerged oil temperature controller.
Adopt automatic metal chips conveyer.
Adopt whole closed guard cover with convenient view windows and beautifule outline.
With multi-automatic surveillant and controll devices.



Main specification and features

Technical specificationTechnical parameterZK2102GZK2102Gx2ZK2103GZK2103Gx2ZK2104GMachining scopeNumber of spindles12121Distance between
spindles
180mm
180mm
Drilling Dia.2-20mm2-30mm4-40mmMax. drilling depth500/1000mmTravel headstock with
rotating drilling barMax. rotating speed of
spindle7000r/Min6000r/Min5000r/MinMain motor power3.7kW3.7kWx25.5kW5.5kWx27.5kWFeed of cutterSpeed range(stepless)5-500mm/MinRapid travel speed3m/MinMotor torque7.7Nm10Nm7.7Nm10Nm10NmCoolant systemMax. pressure10MPaMax. flow100L/Min150L/MinothersGeneral power(approx.)20kW24kW22kW28kW25kWOutline size(LxWxH)4.05/5.05x4.05x2.05mGeneral weight(approx.)6/7tMachining accuracyHole Dia. accuracyIT7-IT11roughnessRa0.4-3.2µmDeflexion of hole
center lineWorkpiece is stationary:≤1mm/1000mm(ratio of length and Dia.≤100:1);workpiece is rotating:≤0.5mm/1000mm.(ratio of length and Dia.≤100:1)Linearity of hole≤0.05mm/100mm.(ratio of length and Dia.≤100:1)
Standard sheme:
KND KND or GSK CNC system, manual pulse control box, vibration damper steady of drilling bar, chain plate type automatic chip conveyer,whole closed guard cover, centred lubrication station, special purpose coolant system, alarm light, tools, work light, levelers, oil temperature controller, hydraulic system, headstock, hydraulic steady rest, high precision chuck etc.
Optional devices:
FANUC 0i mate MD or SIEMENS 828D CNC system,drilling cutter and adapters, drilling oil, cutter grinder or grinding device, oil throwing machine, magnetic metal chips conveyer,air conditioner of electric control box.