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G-TOP

Release time:[2017-9-10 7:11:25]    Browser:5432second

LAG GE International's product portfolio represents the Italian technology innovation, attention to detail and design and huge Chinese productivity. These advantages, combined with world-class component combinations, enable GE to provide the most cost-effective rice machinery and services for its customers on the market.


G-TOP series machines are the outcome of decades of development and top of the line innovations from LAG in the field of press brakes. This technology enables you to bend the most complex parts precisely and meet the market demand for various bending application and production levels. G-top is becoming the best-selling bending machine because although is affordable price, it delivers its owners perfect bends, top performance and flexibility in a fast growing and demanding market




Highly productive and flexible

G-TOP press brakes delivers maximum flexibility and productivity due to several top of the line features:

Ø High speed travelling of all axis

Ø Generous stroke, open height and throat

Ø Minimum tooling setup time

Ø Cleverly designed safety system with CE certification

Ø Automatic dynamic crowning system G-CS

Ø High end configuration :4-axis (X-R-Z1-Z2) back gauge with retractable pneumatic supports

Ø PC based controller with ergonomic touch screen monitor


Top quality bent parts

With G-TOP machines, you can achieve the best quality finished parts every time. Thanks to:

Ø Precision bending guaranteed by bolted and modular, precisely machined, frame components

Ø Patented frame proportional deflection compensation system GFlex

Ø Constant angle over the entire length of the bend resulting from the combination of GFLEX frame compensation system and the smart G-CS dynamic crowning system

Ø Exclusively designed high precision back gauge ensures the blank piece is always positioned

accurately before bending.


Top-of-the-line bending solutions

All of your customized requirements

Ø special tools, automatic clamping, automatic tools setup,automation and software

Ø from one source:

Ø Wide choice of options for back gauge, including our dynamic positioning with multi axis back gauge 6-Axis(X1-X2R1R2-Z1-Z2)

Ø Wide choice of controls, clamping and handling systems

Ø Remote control system with touch screen for remote assistance

Ø Automatic bending followers

Ø 3D simulation and design offline software with CAD import capability

Ø AMS precision angle measurement system

Ø G-TOP/R robotized cell solution




PAT ENTED FRAME PROPORTIONAL DEFLECTION COMPENSATION SYSTEM G-flex

The G-Flex system guarantees consistency between each bend, in case the bending tonnage changes due to material characteristics such as strength, length or bending position on the press

 

Typical of all press brakes, frame deflections are caused by the "C-shaped" side frames which open during bending causing what is called "yawning effect".  This makes the upper beam position measurement erroneous if the linear encoders are directly fixed to the side frames. To prevent this reading error, the machine is equipped with "C-shaped" sub-frames bolted at the bottom of the lower beam and connected to the linear encoders.  With this system the subframes are independent from the main structure and as such are not subject to the above mentioned deflection thus partly guaranteeing correct positioning of the machine

 

With added G-Flex system, the actual position of the upper beam is measured by the two linear encoders installed on auto balanced lever on top of the "C-shaped" sub-frames. That mechanism does not follow any of the deformation of the frame during the bending therefore the measurement imprecision of the encoder caused by the yawning of the side frames is completely eliminated by the spring loaded mechanism

 


CNC DYNAMIC AUTOMATIC CROWNING SYSTEM G-CS

G-Top series is equipped with LAG's innovative CNC dynamic automatic crowning system G-CS, clearly one of the top crowning system in today's press brake market. Being built for maximum precision and absolute repeatability are the strong points of G-TOP series machines. Thanks to advanced systems such as G-CS,G-Flex and to a high  strength and precision bolted frame structure

 

The core innovative aspect of the G-CS dynamic crowning cylinder is that it is controlled in real time in relation to the deformation of the upper beam during the bending cycle. The hydraulic pressure sent to the crowning cylinders is determined by measured values coming from two potentiometers that indicate the deformation of the upper beam and of the lower beam in a closed loop

 

The conventional crowning systems work from a calculated expected upper beam deflection and send a corresponding value to have the lower beam flexion equally.  But this is only a presumable deformation without any feedback on its correctness. Material variations, parts length, holes or various openings and bending position along the machine bed can affect significantly the beams deflections, making anticipated calculations helpless. The bending result then becomes unsatisfactory and corrections need to be made, the Angle of the bend is not

your programming to set the exact value

 

The G-CS manages to achieve automatically, on the same thickness of sheet metal plate, a constant bending angle by keeping tooling parallelism along the full length of the bed, even when bending parts off-center. This is all done without any intervention or corrections from the operator of the press

 


Back gauge synchronized axes(X-R-Z1-Z2)

When it comes to ensuring a precisely bent part, the back gauge system is also another very important aspect of a press brake.Equipped with a standard 4-Axis (XRZ1Z2) back gauge, this configuration already offers flexible and precise high speed gauging. Optional versions of the back gauge are also available depending on your requirements (GRP-5 (5-Axis), GRP-6 (6-Axis),

and GRF-6 (fully independent 6-Axis))

 

The unique design of LAG back gauge is attached very precisely and solidly to the side frames of the machine on dedicated machined surfaces for the high quality linear guides and gear rack transmission. This ensures perfect alignment of the back gauge structure with the side frame without any adjustment required

 

With a structure made from a precision aluminum extrusion and tubular steel beam combination, each axis has on each side have fully adjustable braces allowing a very precise fine-tuning of the parallelism and level of the fingers for maximum precision Highly integrated LAG's latest patented design is associated with X-R shafts fully sealed into a self-lubricated transmission, using straight line dual drive

 


Retractable pneumatic supports

The GRP -R pneumatic sheet supports combined fixed along each Z1/ Z2 CNC moving finger extend out on request to support thinner sheet metal blanks that would otherwise be falling off behind the bottom die and hard to lie against the back gauge fingers.  As soon as bending starts, the GPR -R retracts into rear position.  This will prove very useful for bending large panels as the operator can feed the material in the same direction for continuous bending, and avoid most of the parts turning operation.  Bending efficiency and precision is greatly improved

 

The brushes on top of the GRP-R supportsprevent material scratching or marking

 


Manual sliding front supports

Modular and highly rigid, the front supports are manually sliding along the lower beam of the press on linear guides and a roller bearing at the bottom.  The height is easily adjusted using a front located handle. You can also order some parking areas for those supports when required

 


Punch Holder

Standard KYOKKO H=100 mm high precision manual quick clamping, compatible with European, Amada, Japanese and domestic type tools. One operator can quickly change and clampvertically orfrom the side any uppertool. Optional versions available with double quick clamping or with H=150 mm

 


Lower tool clamping G-BLOCK M

Standard manualclamping

Quick change dies eliminate need to align punch and die when a die is changed Base is 60mm wide, allowing installation of standard European 4-V dies, T-dies, etc

 


Modular tooling system

According to your required bending needs and the commonly used sheet thickness, LAG engineers, according to the open height and press brake can recommend the best selection, including:

standard Punch                                                                1 set

standard V-Die                                                                        1 set

The quick change base with T-shape                        1 set

Customers can select other tools according to their needs

 


Safety-CE certification

The G-TOP press brakes are equipped with the most advanced safety solutions for press brakes in terms of productivity and safety.

 

In addition to meeting relevant standards and regulations, the safety installation of this press are equipped with CE high-end electrical and hydraulic components, such as the DSP-AP Laser Beam, electronic and hydraulic redundant systems

 

DSP-AP Laser Safety offers unique features, increasing the productivity of the press brake:

 

Ø Speed change point at 2 mm above material (0.2 sec), allowing the operator to work safely even with fingers close to the tools without interrupting high approaching speed

 

Ø Built in tool crash protection

 

Ø Box mode capability to achieve complex shapes without significant impact on speed

 

Ø Different operating modes selectable bend by bend (stop at mute-auto mute) fully integrated in the control

 

Ø Height adjustable supports through linear guided sturdy supports equipped with  quick reference scale for faster tool  changes and repositioning along with upper position locking mechanism allowing side extraction



Heating exchanging system

Another important competitive advantage of the hydraulic system comes from the use of a separate automatic oil cooling system.  Hydraulic oil temperature upper limit is monitored by temperature sensors to control oil temperature within  reasonable  range.  Automatic  start-stop  function effectively protects the cooling and hydraulic systems during long working hours preventing overheating of the oil than can cause permanent damages to valves or seals and reduce equipment performance



Independent crowing pump

In  order to manage  perfectly the crowning pressure, a secondary hydraulic pump is in line with the main pump in order to control the working pressure independently. This ensures constant bending accuracy



Air conditioning electrical box

The electric cabinet is equipped with an air conditioning system that controls the temperature and humidity to an ideal level. It also prevents dust and corrosive gases from entering the cabinet and damaging electrical or electronical components. This guarantees a longer life to all components and improves the system stability and machine reliability



Numerical control system ESA 550 PC touch screen

LAG cooperates with world famous Numerical Controls manufacturers. State of the art control technology combined with LAG's decades of bending know-how allow operators to easily program a wide variety of parts under different bending conditions.

 

Ease of programming

An operator friendly 15" Touch Screen user interface leads to a significant improvement in data input rate and greatly reduce programming time 2D graphical programming with automatic bendingsequencing will assist in making even first time operators become quickly autonomous.

 

Productive

the ESA550PC has perfect dynamic crowning software,a large memory CIF card,two USB ports and an Internet connectivity Most bending applications are easy to program by using the 2D graphical on-line programming with auto sequencing. According to demand in the course of time the designer may do simulation checks using the 3D visualization of the parts on the machine control



2D Off-line software

2D offline software is an easy-to-use and an effective tool for off-line programming of all G-TOP series press brakes

 

 

Main Standard Configuration

Frame proportional deflection compensation system G-Reflex

CNC dynamic automatic crowning system G-CS

CNC mod. ESASSOPC/Delem 66T

6+1 axis (Y1-Y2-X-R-Z1-Z2+V)

Back gauge system mod. GRP-R (X-R-Z1-Z22 tableswith brushes)

2 fingers on back gauge support

CE standard




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