Ortobreton 4EG - Multiblade cutting system for granite block with independent strip extractor

Ortobreton 4EG - portal block saw

Maximum rigidity to increase performances and minimise running costs 

Portal machine 

The circular blades are positioned on the machining area by shifting the block platform. 

Superframe structure

Two columns on each side of the spindle support beam provide greater rigidity.

The improved geometry minimises vibrations 

The portal block saw is the ideal solution for limiting the vibrations. Each circular blade works in ideal conditions and cutting accuracy is excellent.  

4EG block saws enhance the portal layout by means of two columns on either side of the machine. 

The portal structure enables the horizontal blade to be easily incorporated into the solid structure of the machine. The horizontal blade detaches the strips whilst the vertical ones operate.

SUPERFRAME structure     
The 4EG block saws are a real point of reference as to rigidity and stability of the cutting system.

The superframe structure provides the solidity required by a blade pack wider than one meter.

Each end of the spindle beam is rigidly fixed to two columns.

The structure acts against twisting of the spindle beam even when thrusts have a transversal component.

Vertical movement of the beam is provided by a reduction gear that transmits movement to the four angular transmissions connected to the four screws so as to ensure precise positioning.

Cutting is thus very precise, even in critical conditions, e.g. when only one side of the blade pack is working.

Unit for integrated horizontal cutting     
In the Ortobreton 4EG SFO block saws, the horizontal cutting unit is connected to the main structure of the machine but is independent from the vertical blades: this allows the unit to remove the strips while vertical blades cut the next series.                             

In this way the machine is always running, thereby ensuring greater productivity.

The horizontal blade unit slides on the two front columns and has very precise movements.  

The horizontal blade works in synchronism with the automatic vacuum unloader that moves to the right position so as to pick up and support the strip before it has been completely detached. 

The overhead structure of the unloader minimises the space occupied on the ground and enables very rapid cycles that are much less than the time required to detach the strip.

A machine designed to minimise running costs 

The running costs of a block saw are mainly due to the cost of diamond tools. The annual expense for tools may be as great as the amount invested in the machine. 

Wear of the diamond tools depends, besides on the rigidity of the machine structure, also on how the spindle carriage travels. In the 4EG model, an asynchronous motor controlled by an inverter that actuates a pair of parallel racks meshed to two pinions, moves the spindle-holding carriage. 

A dynamically balanced, large-sized spindle shaft performs the blade rotation.  In the 4EG 1100 SFO, the diameter is 210 mm and the moment of inertia is almost four times that of a shaft with diameter of 150 mm. This great moment of inertia means that the spindle shaft flexion is minimal even under heavy-duty conditions with 60 blades applied.

The unit for moving the platform into the machining area 

A rugged steel guard protects the screw in an oil bath that conveys the platform to the machining area. 

A labyrinth seal prevents water from coming into contact with the screw, which is moved by an inverter-driven motor. 

The platform reaches its working position with great precision by running on a flat and a prismatic rail. 

Management system with personal computer in Windows environment

The work of the block saw must be programmed very carefully. To increase the operator’s concentration, the machine is managed by a personal computer where a user-friendly software facilitates all operations. 

The data on block dimensions can be easily acquired by positioning the machine’s work axes using the palmtop keypad.

The personal computer can be connected to the Breton remote assistance service, which can rapidly acquire the information on machine status in order to carry out a rapid diagnosis and if necessary proceed directly with a software operation. 

Numberless statistics regarding operating time and tool duration can be processed. The programme also warns the operator when it is necessary to carry out a scheduled maintenance job.

Here you can find technical data about cutting granite block machine Ortobreton 4EG.

I'm done for today. I hope i haven't bored you.
Click here for request or other INFO.
By-by
Sergio Prior

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Block squaring system Breton Easywire DUO

System used to square blocks (two parallel sides of the block) or cut slabs (even thick slabs) using exclusively the fixed machine.

The squaring system consists of two single-wire machines EASYWIRE placed parallel to each other, one of which is fixed while the other moves on rails with motorized traverse.

The movement of the mobile single-wire machine is by two inverter controlled asynchronous motors, which transmit the motion (through reduction gears) to pinions meshing racks that are fixed to the rails.

Machine structure and mechanisms
Handy-designed and functional structure made of heat treated, arc-welded steel, ensuring the required stiffness of the system and cutting precision of the machine.

Two opposite carts containing the components for the wire motion, slide vertically along the machine columns by means of screw/nut screw mechanisms, thus moving the wire up and down.

The wire is rotated by a driving pulley with a diameter of 1.000 mm through an inverter controlled asynchronous motor that optimizes the wire peripheral speed according to the material to be sawn. 

A driven pulley with the same diameter is constantly kept under tension by a pneumatic cylinder, thus giving the wire the ideal tension.
The mechanism is completed by two independent driven pulleys with the same diameter, and two wire-driving pulleys installed next to the point where the wire gets into, and comes out from, the block to be sawn.

Electrical cabinet and control console with colour touch-screen.

Safety measures
a special sensor, connected to the stretching cylinder, detects any possible breakage of the wire and stops the machine instantly.

For more INFO write to mail@breton.it
By-by
Sergio Prior

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cutting block granite, diamon wire machine, diamond wire saw, Easywire duo breton, granite block squaring

The winning synergy

Breton SpA has acquired the Bideseimpianti production division from the Bidese group, a leader in the production of diamond saws for cutting granite and marble blocks. 

Breton diamond wire saws are covered by a variety of patents, putting them miles ahead of the competition.

The synergy between the successful projects and the incomparable know-how of Bideseimpianti , with Breton 's technical and planning skills and an excellent after-sales service make Breton diamond wire saws the most reliable and productive available in the market today.

Thanks to Bideseimpianti , Breton easily holds the record for the highest number of multi-wire saws installed in the world.

Breton & Bideseimpianti : the winning synergy that ensures the success of your return on investment.

SIMPLICITY AND FUNCTIONALITY

Breton diamond wire saws have a strong and functional, heat-treated, steel frame, which guarantees the necessary rigidity in the system and the greatest cutting accuracy. The painting process guarantees high resistance to corrosion.

The surfaces to be painted are first sand blasted in preparation for painting, then painted with zinc-based epoxy primer and followed by a bi-component paint.

Simple and functional designis the main feature of Breton diamond wire saws, which makes them extremely easy to use and service.

The wires can be replaced or moved to obtain the different thicknesses required very quickly and smoothly as the machine can be easily accessible from all sides.

The motor spool, independent pulleys of the driven spools, wire tensioner spools and wire guide spools are covered with special wear-proof elastomer profiles, and are easily interchangeable.

All the mechanical machine members and the electronic control and safety sensors are in positions easily visible and conveniently reachable, making routine maintenance and cleaning as user-friendly as possible.

THE LOWEST MAINTENANCE COSTS

Breton diamond wire saws stands out for its simplicity to service and clean, and its low costs for maintenance and replacing worn parts. 

Moreover, no special interventions by Breton technicians are required for all the routine maintenance operations (for example replacing a bearing, wear-proof elastomer profile or sensor), as the client's technician is generally able to perform these tasks in full autonomy.

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