Big Bore CNC Lathes

Features:
1. Big bore CNC lathes are with large spindle bore, double hollow chucks, mainly used in the petroleum, geological, mining and chemical industries, and in agricultural irrigation and drainage, etc.
2. Big bore CNC lathes are developed for oil pipe threading turning, and suitable for all kinds of pipe thread turning.
3. Big bore CNC lathes are full-closed loop control system CNC pipe threading lathe, also can be used as ordinary CNC lathe.

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Product Details

Applications:    


△ QK-series big bore CNC lathes are mainly designed to process all kinds of internal and external pipe threads including metric, inch, module, DP and taper threads, as well as having all the common functions of normal CNC lathe such as processing the inner bore and end face of shafts and disks. Big bore CNC lathes are  widely used in industries including petroleum exploiting, coal and minerals mining, chemical piping and geological prospecting, it is high-efficiency equipment in processing and repairing drilling pipe, drilling rod, thread coupling and so on.

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Features:


1. Big bore CNC lathes are with large spindle bore, double hollow chucks, mainly used in the petroleum, geological, mining and chemical industries, and in agricultural irrigation and drainage, etc.

2. Big bore CNC lathes are developed for oil pipe threading turning, and suitable for all kinds of pipe thread turning.

3. Big bore CNC lathes are full-closed loop control system CNC pipe threading lathe, also can be used as ordinary CNC lathe.

4. Big bore CNC lathes are suitable for processing complex shape of shaft, set, the dish parts, such as turning internal and external cylindrical face, internal and external cone face, circular arc surface, end face, cutting and corner, turning thread etc.

5. Strong adaptability and high processing efficiency, low scrap rate, finished good consistency, can reduce to requirements of skilled workers.

6. Electronic hand-wheel at the control panel for manual operation ensure easy, quick setup of new workpieces and tools.

7. High-torque drives and preloaded ball screws on all axes.

8. Including high-performance coolant system, and central lubrication unit, and chain-type chip conveyor.

Encoder for Spindle Speed

Thread connection for Chuck

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Accuracy Testing Big Bore CNC Lathes


» Fine turning for taper threads (Taper: 1:16, Thread pitch: 3.175mm), After tested by special measuring device, it can meet accumulative error of pitch to 0.035/25.4mm, and ensure that the clients can get the workpieces they want.

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RENISHAW Inspection Big Bore CNC Lathes


» Before the delivery, big bore CNC lathes adopts UK RENISHAW laser detector to do dynamic precision testing and offset, so big bore CNC lathes have the high positioning accuracy and re-positioning accuracy.

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Technical parameter:


Model

Units

QK-440

QK-520

QK-640

Capacity

Swing over bed

mm

1000

1200

1400

Swing over cross slide

mm

610

710

800

Distance between centers

mm

1500/3000

1500/3000

1500/3000

Pipe threading range

mm

270-430

330-510

330-630

Bed width

mm

755

755

1100

Max. load capacity

kg

6000

6000

10

Spindle

Spindle bore

mm

440

520

640

Spindle speed steps

steps

stepless (3shifts)

stepless (3shifts)

stepless (3shifts)

Spindle speed

rpm

8-205

8-205

2-120

Chuck size

mm

1000

1000

1250

Chuck type

-

Electrical 4-jaw

Electrical 4-jaw

Electrical 4-jaw

Turret

Turret type

-

Electrical 4-stations

Electrical 4-stations

Electrical 4-stations

Tool shank size

mm

40x40

50x50

50x50

Feed

X-axis travel

mm

520

520

850

Z-axis travel

mm

1250

1250

1250

X-axis rapid feed speed

mm/min

4000

4000

4000

Z-axis rapid feed

mm/min

4000

4000

4000

Tailstock

Tailstock quill diameter

mm

140

140

220

Tailstock quill taper

-

MT6

MT6

Metric 80

Tailstock quill travel

mm

300

300

300

Power

Main motor power

kw

22

22

37

Coolant motor power

kw

0.125

0.125

0.125

Others

Machine dimensions

cm

500/650
     x220x220

500/650
     x220x220

550/700
     x288x280

Machine weight

kg

13000/14000

15000/16000

18000/19300


Accessories:


Standard:

√ 4-jaw chuck

√ FANUC CNC system

√ MPG

√ Vertical 4-stations tool post

√ Central lubrication system

√ Working lamp

√ Cooling system

√ Operator manual

Optional:

★ GSK CNC system

★ SIEMENS CNC system

★ Horizontal 6-stations tool-post

★ Rear support

★ Steady rest

★ Air conditioner


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