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Nantong Xingli Machine Tool Co., Ltd  

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press brake for steel sheet 

Price: 6650.0~186650.0 USD 
Payment Terms: T/T,L/C 
Place of Origin: Jiangsu, China (Mainland) 
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Product Detail

Model No.: WE67K-1200T 9000
Production Capacity: 60 Set/Sets per Month
Delivery Date: Within 25-45 days after rec...
Raw Material: Sheet / Plate Rolling
Power: Hydraulic
Extra Services: Machining
Bending width(Length: 9000mm
System: Delem DA52 CNC System
Means of Transport: Ocean,Land
Packing: PVC plastic,with steel pall...
Machine Type: Coiling Bending Machine
Material / Metal Processed: Stainless Steel
Automation: Manual
Bending thickness: 16mm
Backgauge accuracy: 0.1mm

Bending machine for Steel Sheet
Integrated hydraulic system, REXROTH valve-Germany
Main electrical components-Siemens-Germany
High quality,DA52 CNC

160T/3200-3C

Ser.

Name

Parameter

Unit

1

Nominal pressure

12000

KN

2

Length of worktable

9000

mm

3

Distance of upright

7650

mm

4

Ram stroke

400

mm

5

Max.opening height

900

mm

6

Throat depth

600

mm

7

CNC Axis number

Y1,Y2,X,C

8

Speed of ram

 

 

Approach

90

Mm/s

Working

16

Mm/s

Return

90

Mm/s

9

Re-positioning precision of arm

+_0.01

mm

10

Back gauge X axis

500

mm

11

Overall dimension of machine tool

 

 

Length

9300

mm

Width

3800

mm

Height

6180

mm

12

Main motor power

45x2

Kw

13

Machine weight

63500

Kg

Note:Y1,Y2 axis- controlling the movement of arm

X axis- controlling the movements forward and backward to back gauge

C axis-automatically hydraulic crowning compensation to the worktable

 

Structural feature of machine

Outline structure should have these feature:

u Totally European design,streamlined looking

u Taking off inner-stress of welded parts by tempering,good stability

u Remove rust with sand-blast and coated with anti-rust paint

u Adopt Spanish pentahedron machine center,once clamping can finish all working surfaces which will guarantee dimension precision and position precision

u Supplying three front sheet supports

u Finish of Nippon Polyurethane paint

Ram structure

u Upper stroke design for bending,low noise,stable operating situation

u Parallel tolerance of Y1 and Y2 is 0.01mm

u Y1,Y2 can be programmed separately,can work under non-balance load,can bend cone-shape work piece

u At bottom dead center a pressure-keeping time is offered,and can be programmed to assure precision of all kinds of work piece.

u Can move the ram up slowly,which allows the operator to control work piece conveniently

u Universal fixing-surface of the upper tool can be meeting with the clamping requirement of the tool farthest

Hydraulic system

u Close loop electro-hydraulic synchronized servo-control system,the most advanced

u Hydraulic system is from Rexroth,Germany,a full loop electric-hydraulic proportional servo control,Sumitomo oil pump,Japan.

u Imported linear optical reader,guiding system,positioning system and hydraulic balancing system with high precision,which all can permit the processing work piece of full length or with eccentric.

u An outfit with "C" is at throat, as deformation compensation on throat,directly measuring the distance between upper tool and low die,assuring the precision of work piece.

u All seals in cylinder is imported,the most famous brand,good quality and high performance

u Overload overflow protection is outfitted to hydraulic system,which can assure no leakage,and the oil level can be read or seen directly

u Being able to work under rated load continuously,stable working and high precision

Back gauge

u Good for work piece needing multiple steps of bending with high precision requirement.

u X is moved with ball screw,guided by linear guide,and driven by digital AC servo-motor.

u Back gauge has well enough mechanical strength and rigidity with tank-type gauge structure.

u Two fingers are moving alone swallow guide,operate easily with high precision

u Particular finger-stop design,enlarge the range of back gauge.

Electrical system

u Electrical components are imported or from Sino-foreign joint Venture,in accordance with international standards,reliable safety,long life,good anti-interference ability,a radiation unit is fitted in electrical cabinet.

u Having a movable single-hand pedal switch with emergency stop,easy to operate.

Crowning compensation

u Low worktable has an automatic crowning compensation uint; compensation amount is automatically set up by CNC system,with guarantee a same bending angel on full length.

u The worktable adopts the particular design,reducing the crowning distortion amount of lower tool effectively.

CNC control system

u CNC control is DA52,DELEM of the Netherlands

Dies and tool configuration

 

 

List of main commercial components:

Serial

Name

Supplier

1

CNC system

2

Servo motor

3

Servo drive

4

Hydraulic system

5

High pressure gear pump,proportional direction-flow valve,pressure-control valve,change valve,one-way valve,pre-fill valve,shuttle valve,retainer,pressure equalizer,damp bolt,high pressure oil filter

Rexroth/ Hoerbiger,Germany 

6

Optical readout 

Haidenhain,Germany

7

Slide-in joint of hose

EMB,Germany

8

Ball screw,linear guide

HIWIN

9

Seals of cylinder

VALQUA,Janpan

10

Main motor

ABB

11

AC contactor/Heat relay

Schneider,France/Siemens,Germany

12

Single/double pole air switch,button

 

Control Technology

The synchronization of press brake adopt the technology of full loop electro hydraulic servo control, the positioning signal of the upper beam are feed back by raster (light-ruler) to CNC system and CNC system will check the opening size of synchronization valves, adjusting the inlet oil amount, to realize the synchronizing movements of the upper beam (Y1, Y2), and keep the worktable are always parallel situation. Following the situation of sheet metal to be bended, CNC system control automatically the amount of the crowning compensation of worktable to realize that angle being bended of workpiece can keep same along the full workpiece length. 

 

Crowning Compensation

Crowning compensation system on worktable can make a workpiece having a same precision full along the length of the workpiece. A crowning compensation system is composed of a group cylinders in line in worktable, which can from a relative movements of worktable, forming a curve needed of adding conves to worktable, to ensure unchanged the relative position to the upper beam of worktable after the worktable being under pressure. The crowning compensation amount is automatically calculated out by CNC system according to the worktable's situation. 

 

 

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 Mr. James

Tel: 86-513-88280666
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Company Info

Nantong Xingli Machine Tool Co., Ltd [China (Mainland)]


Business Type:Manufacturer
City: Nantong
Province/State: Jiangsu
Country/Region: China (Mainland)

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