Stone Block Cutting Machines in Spain

The machine GR 80 TAR is the perfect image of strength, power and control.
STRENGTH: Structure especially designed to resist high speed cutting. It has two large connecting rods and the most suitable forgings.
POWER: Its 132 Kw engine cuts all kind of material, soft or hard.
CONTROL: Automated system that controls the cutting conditions, regulating the sinking speed within the consumption of the main engine.
Besides its huge capacity, the sinking speed makes the gang saw GR 80 TAR the perfect choice for a clean and safe work.
Its cooling system by water combined with the sinking speed reduce the consumption of diamond and the risk of breaking precious material.
GR 80 TAR, designed with high technology can cut marble and granite blocks at the same time, giving the marble factories an excellent product to cover all the different stages of Stone processing.

Robust and simple bridge cutter. Different options depending on the number of discs needed.

From 1 to 6 discs, Diameters 1600-2200 mm.

Digafer S.A.

Pol. Ind. Las Gándaras s/n, Ap Postal 164 – 36400 Porriño Pontevedra, Spain

Phone: +34 986 337 969 | Fax: 986 337 926

info@digafer.es

BRIDGE CUTTER N.7000/1600
The NDF-7000 cutter is a machine with great robustness and versatility, thanks to its swivel design for cutting and squaring of blocks supported directly on the ground without turning the table.
Linear guides the movements of the head and bridge supported on steel beams.
Productive, efficient and precise, with automatic positioning and speed control, variable speed features in all their movements.
Terminal easy programming and installation for maximum performance for robot controloda.

HTO-2000 Block cutter
High capacity block cutter.
It works with an up to 2000mm diameter disk.
It is provided with great power, strenght and long lifespan as well as accuracy and speed to carry on the cutting tasks.
Application examples:
It cuts blocks, strips, specific pieces, it does chair jobs, etc.

Diamond gang saws are designed for the three types of machines of the market: single saws, vertical multiple gang saws and horizontal multiple gang saws.
While the slow ones work at 80 strokes per minute, the fast ones work at 120 strokes per minute.
It is designed for cutting marbles, sandstones, siliceous sandstones, etc. The blond and the diamond get adapted to the material and the machine.
An accurate assembly and tensioning of the gang saws ensures a high quality and the cutting speed as well as a high performance required.

Linea Block Square Model: 08
Undoubtedly, one of the best products that can provide DyD® to increase the performance of your quarry. Always effective and resilient, our cutting line for Cuadreado Block allows chop several blocks of stone at a time with a cutting system with high performance and fully automated.

Characteristic Specs
NO MAXIMUM OF THREADS fifteen
THREAD DIAMETER 7.3mm
MACHINE HEIGHT (mt) 6.3
MACHINE LENGTH (mt) 10.20
MAXIMUM BLOCK LENGTH (mm) 3500
MAXIMUM BLOCK HEIGHT (mm) 2200
THREAD LENGTH (mt) 22.40
MACHINE VERTICAL TRAVEL (mm) 2400
FLYWHEEL DIAMETER (mm) 1800
MINIMUM CUTTABLE THICKNESS (mm) twenty
MAXIMUM CUTTING WIDTH (mm) 1000
DIAMOND WIRE SPEED 0-35m/sec
MAIN ENGINE POWER (kw) 75

MULTIWIRE N6860/60 TECHNICAL SHEET
The new Diamond wire cutting machine NDF 6870/60 is a multi-wire machine designed to produce boards and plates of varying thickness from the large blocks of marble and natural stone. This new unit represents the most modern technology in what refers to the primary sawing of the stone blocks, becoming the alternative to the traditionally used sawing methods, since it improves the production capacity quantitatively, efficiently taking advantage of the energy resources needed to the production of materials and significantly reducing the production costs of the cutting phase.

The multiple diamond wire cutter is a machine that stands out for its efficiency and high productivity, designed to obtain high yields, which is characterized by its great robustness, thanks to its particular design that forms a compact, balanced and balanced set where all movements are concentrated, and its proven reliability and that of the elements that compose it, being all designed to withstand the toughest working conditions.

The main structure of the machine is basically composed of two sturdy columns formed by two steel-welded steel structures, connected between them by an upper crossbar. On both columns the structure of the main frame that joins the two trolleycarriages is mounted, which move vertically supported on both columns on linear guides with linear roller recirculation skates and actuated by a pair of spindles rolled with recirculating nuts balls, synchronized and operated by two motor-reducers with independent servo motors for the ascent / descent of the threads with a smooth and precise movement, located in the upper part of both columns, the entire guide assembly is perfectly protected by PVC bellows . The servomotors are synchronized by software in the vertical movements that ensure smooth cutting, low consumption and maximum precision and avoid the slacks and problems of the central motorization with transmission and forwarding.

The Ø1800 drive drum is formed by a single multi-channel pulley with grooves and connected to the main motor by a pulley and timing belt transmission. The threads are manually positioned according to the desired thickness supported by one side of the machine on the drive drum, and in turn are tensioned from the opposite end by autonomous pulleys. The diamond wires are also guided by two multichannel drums that help to significantly reduce the arrow produced by them. From the opposite end to the driving drum, the diamond wires are supported by the set of idle pulleys, designed with a particular pivoting extraction system, which allows reducing maintenance times significantly.

Once the wires are located, these are adjusted with the active tensioning device that acts individually on each of the tensioning pulleys, independently ensuring that each of the threads has the same tension regardless of the minimum differences in length between each of the threads that are installed in the machine. The tensioning system manages to increase the useful life of the wires and therefore the profitability of the machine

The whole machine is characterized by the robustness and reliability of the elements that compose, being all designed to withstand the toughest working conditions, and in this aspect it is precisely where we can provide all the experience accumulated over the years we have been designing and manufacturing machinery for this sector.
Notable features
Reduced and optimized energy consumption.
Mechanical robustness and absence of vibrations.
Active and independent tensioning system, which increases the useful life of the threads, increasing profitability and ensuring optimum surface finishes.
Innovative pulley design, with pivoting extraction system that reduces maintenance times.
Full range of cutting thicknesses, thanks to its particular design of pulley packages and combination of grooves, without penalizing the life of the diamond wire.
Excellent precision and flatness of cut, through its particular system of guidance by linear skates and its rigid bearing structure.
Easy and convenient access to the inside of the machine, thus facilitating the work of changing threads and their maintenance.
Helical spindles with large diameter balls in vertical movement for smooth or precise movement.
Servomotors synchronized by software in vertical movements that ensure smooth cutting, low power consumption, maximum precision and avoid gaps and problems of central motorization with transmission and forwarding.
Up to 60 wires with various possibilities for the combination of cutting thicknesses.

Strong points
The multiple diamond wire cutter is a multi-wire cutter designed to produce slabs, boards and slabs of varying thickness from the large blocks of marble and natural stone. Traditionally in the factories of transformation of the granite, the cut of blocks is being made of the size of the same with looms when the blocks are of big dimensions, or with bridge cutters of big diamond discs in the workshops of stonework when cutting semiblocks.
The biggest aspect to note is that the multi-wire cutter, for an equivalent capacity, the effective energy consumption, is lower compared to any of the methods used. This translates into significant energy savings both in the implementation, as in production costs.
This difference in the equivalent energy saving is mainly due to the difference in sawing technology, the multi-wire cutter only uses up to 60 loops of diamond wire and water during this process by cutting continuously. These diamond wires are basically formed by a steel cable covered by diamond rings along the cable, the cutting effect on the stone block to obtain the slabs and boards is produced by the effect of the continuous drag movement of the wires at a linear speed of about 38 meters / sc. combined with the rotation of the rings, producing a very high cutting power, differentiated effect with respect to the large traditional looms where the cutting process can be defined as the effect of a reciprocating saw, formed by a frame that houses about 100-130 steel strips in contact with the stone blocks at the same time moving c incombination with the rain of abrasive mixture of water, steel shot and lime, which produces the same amount of incisions in the stone block that amount of strapping
In summary, the coefficient resulting from the equivalent energy consumption in Kw / m2 of a multi-wire cutter compared to the loom is greater than 50% savings, even considering that the total installed power of a multi-wire cutter is greater than that of a traditional loom.
The Multiple Diamond Wire Cutter is the alternative to the primary sawing methods currently used, improving the production capacity quantitatively, efficiently taking advantage of the energy resources necessary for the production of materials and significantly reducing waste produced during the cutting phase.
Comparatively, the advantages of using this new technology applied to the multiwire cutter are obvious. The multi-wire cutter can cut any type of stone material in front of looms that only cut granites or marble, but these are two different models and that use different tools, the looms are only profitable when cutting 2-3 cm sheets of thickness, but its biggest disadvantage is in the energy consumption and the very high production of solid waste, since the water used is recovered in all cases, this waste apart from assuming a higher purification cost, presents a problem of environmental pollution in case of the looms because it contains iron, and the lime that alters the acidity of the waters, in addition to the moment it is not possible to separate or recover at this stage of the process. There is an important difference compared to traditional cutters, which is based on the cutting height, with a disc we can cut 1.50 meters in front of the diamond wire that any commercial block can cut, apart from the great productive difference that exists
The water treatment and purification process for this new process is therefore more economical and less complex.
It is also worth noting that the water needs, while being similar, with respect to the traditional loom, the diamond wire cutting practically cancels the need to wash the load after sawing, this being much less demanding and both the needs and Water losses during the cutting process are lower.
Another aspect to note is that the multi-wire cutter, for an equivalent capacity, the effective energy consumption, is lower compared to any of the methods used. This translates into significant energy savings both in the implementation, as in production costs
With respect to consumables, say that in the multi-thread cutter there is only one; the diamond wire, small volume, easy storage and simple supply. The costs derived from storage, stock programming and handling, are also lower with respect to strapping, shot and lime, necessary for the traditional loom.
In reference to the costs of implementation, the simplicity and the consequent lower cost of civil works stand out in the first place, while in the loom the necessary work constitutes an indispensable part of it, in the multi-wire cutter, this becomes a mere support of it. In addition, in the case of renewal or replacement of the machine, the loom forces the new implantation to be exactly the same model as the previous one, while in the case of the multi-threaded cutter there is a high degree of possibilities of being able to make an adaptation of the existing civil works. In any important case, that is, the space occupied by the multiwire is less.
The simplicity of the multiwire is significantly greater, both in installation, use and handling, as well as in maintenance, both mechanically and electrically. It is important to note that the NDF-6870/60 multi-wire cutter does not use the common solution for vertical movement consisting of a central motor with reducer, transmissions and angular forwarding. This is replaced by two independent and electronically synchronized servomotors without coupling between them. This solution, in effect, cancels the inconveniences of the classic mechanical transmissions, the clearances and possible breaks due to wear and fatigue, and also allows us greater flexibility in the movements to be carried out. In this regard, it should be noted that the system is capable of working atspeeds as slow as one millimetre per minute, as at the fastest of almost one meter per minute, all without loss of power or precision in movement.
As a practical effect, the NDF-6870/60 cutter is the fastest machine on the market capable of performing a vertical ascent movement against any contingency, avoiding the undesirable marks of diamond wire in the stone.
The surface of the final product serrated with the diamond wire, in addition to the fact that it does not need to be practically washed, much less the use of harmful acids or chemicals and dangerous handling, offers the important advantage that its surface state can be assimilated to a certain jaded In the event that the material must be subsequently polished, a certain reduction in the costs associated with the abrasives used in the polishing process and the consequent reduction in production times should be noted.
The high speed of the multiwire cutter will also allow new users of this technology to schedule production with a lower advance and greater flexibility than the loom, even allowing partially cutting a block and reserving the rest of it for another more appropriate time.
The flexibility of production is also given by the clearly lower staffing needs. The preparation of the saw in a thread cutter for a cut, consumes less than half the time and less than half of human resources than a traditional strapping loom
With this cutting unit it is intended to integrate the fully automated operation of the primary sawing work of the stone blocks, with the minimum human intervention and therefore a significant reduction in the manoeuvres of product handling, regularization and optimization of the work processes, the increase of the productive capacity thanks to the reduction of the cycle times and the efficient use of the dead times, the reduction of the energy consumption and the production of the waste during the cutting process, and finally the reduction of the associated risks for the personnel involved in the work of manipulation and mechanization of the materials throughout each working day

Why should our cutter be bought?
The use of diamond wire in the primary sawing work has been used in the sector for not many years, and said wire is applied on known machines, normally formed by two pulleys on which a wire is installed forming a closed loop with which the cuts are made on the stone blocks.

In recent years, machines have begun to be used that use several diamond threads, which are mounted on multi-channel drums or formed by several pulleys, on which several threads are mounted in order to make several cuts at the same time on the stone blocks, thus obtaining significant productions.

The machines used up to now present different technical problems when performing the correct tensioning and control of the thread loops, in addition to another more significant one that lies in the possibility of varying in a simple way the position of the pairs of wires in order to obtain different thicknesses or vary them in the production of boards.

Taking these disadvantages into consideration, the N.6860/60 cutter stands out for its simplicity in the individual tensioning device of the tension wheels, and at the same time the variation of processing thicknesses in the slabs and boards to be cut has been simplified in a simple and easy way.

NODOSAFER offers its customers in addition to all the features intrinsic to any thread machine, such important improvements as:

Architecture based on a robust and compensated structure to avoid vibrations.
Maximum protection against the penetration of water and dust in the most sensitive parts.
Large diameter helical ball screws in the vertical movement for a smooth and precise displacement.
Linear roller recirculation guides in the columns to guarantee the absolute verticality of the cut.
Servo motors synchronized by software in the vertical movements that ensure smoothness in the cutting, low consumption, maximum precision and avoid the gaps and problems of the central motorization with transmission and forwarding.
Basic large diameter drive drum mechanism that prolongs the life of the thread.
Automatic tensioning device by independent pulleys of each of the threads, with position, arrow and tension control of each of the threads.
Automatic and progressive decrease of speed in case of excessive arrow in the thread.
Detection of thread breakage and controlled stop (rapid braking and maximum speed climb)
Controlled emergency stop to avoid marks on the cut block.
Possibility to resume a cut in automatic or semi-automatic mode.
Wide range of devices and program functions for operator and machine safety.
Motorized trolley with optional position control.
Operator panel in color with great ease of use and multiple configuration possibilities.
Compact electrical panel with the latest technologies.
High power main motor driven by inverter.
Button pad for movements in manual mode.
Automatic greasing.
Security
NODOSAFER machines are protected and provide a safety lock around their entire perimeter in accordance with CE safety standards
Load block trolleys
The machine has 2 motorized block trolleys fitted as standard.

The MEB 2000 wire saw from Grani Roc is a machine designed for dressing and slabbing stone blocks. The machine is built with the classic setup of static structure and rotating trolley to position and to move the block.
· The bridge structure and pillars of the machine are built in laminated steel. All surfaces of contact between the different parts are machined for guaranteeing high precision in assembly and also in the cutting process.
· All the steel elements of the structure are subjected to a surface finishing consisting of a deep cleaning and degreasing treatment, a metallization treatment and corresponding protective layers and painting. These treatments enhance the durability of the machine
against aggressive weather and working conditions.
· The main motor is direct in the main pulley, and it is controlled by an electronic frequency variator –inverter-, that permits to apply progressive linear speed to the wire and its adjustment to optimize the behaviour and performance of the tool.
· The tensioning of the wire is made pneumatic and automatically with indication of wire breakage or shortage. In this way the machine controls automatically the down movement of the machine, adapting it to the optimum working tension of the wire, avoiding possible breakages
and optimizing its behaviour.
· All the main pulleys –drive and tensioning– and guiding wheels are protected by rubber liners in order to get the necessary traction of the wire. Such liners can be easily changed once they are worn out.
· The machine is equipped with an automatic cooling system for the diamond wire with detection of constant water pressure. This system stops the machine in the case of lack or insufficient water flow, protecting the tool and preventing possible deterioration or damage of the equipment.
· All the up and down screws are protected with hoods against dust and water .
· The machines has an automatic greasing system that injects lubricating liquid in the critical parts of the machine ensuring their correct functioning and the long life of the spare parts.
· The control panel is situated in the lateral part of the machine and moves with it. It has all the drive and protection components and devices of all control and safety equipment of the machine. All these components are standard, allowing easy and quick maintenance and / or replacement.
·The machine has its own mobile compressor, necessary for the pneumatic system for tensioning the wire.
·The trolley is 2.300 x 2.300 mm and has a maximum capacity of 30 Ton. The rotation is manual 360º and can be blocked every 90º.

The MEB 2000 wire saw from Grani Roc is a machine designed for dressing and slabbing stone blocks. The machine is built with the classic setup of static structure and rotating trolley to position and to move the block.
· The bridge structure and pillars of the machine are built in laminated steel. All surfaces of contact between the different parts are machined for guaranteeing high precision in assembly and also in the cutting process.
· All the steel elements of the structure are subjected to a surface finishing consisting of a deep cleaning and degreasing treatment, a metallization treatment and corresponding protective layers and painting. These treatments enhance the durability of the machine against aggressive weather and working conditions.
· The main motor is direct in the main pulley, and it is controlled by an electronic frequency variator –inverter-, that permits to apply progressive linear speed to the wire and its adjustment to optimize the behaviour and performance of the tool.
· The tensioning of the wire is made pneumatic and automatically with indication of wire breakage or shortage. In this way the machine controls automatically the down movement of the machine, adapting it to the optimum working tension of the wire, avoiding possible breakages
and optimizing its behaviour.
· All the main pulleys –drive and tensioning– and guiding wheels are protected by rubber liners in order to get the necessary traction of the wire. Such liners can be easily changed once they are worn out.
· The machine is equipped with an automatic cooling system for the diamond wire with detection of constant water pressure. This system stops the machine in the case of lack or insufficient water flow, protecting the tool and preventing possible deterioration or damage of the equipment.
· All the up and down screws are protected with hoods against dust and water .
· The machines has an automatic greasing system that injects lubricating liquid in the critical parts of the machine ensuring their correct functioning and the long life of the spare parts.
· The control panel is situated in the lateral part of the machine and moves with it. It has all the drive and protection components and devices of all control and safety equipment of the machine. All these components are standard, allowing easy and quick maintenance and / or replacement.
·The machine has its own mobile compressor, necessary for the pneumatic system for tensioning the wire.
· The trolley is 2.300 x 2.300 mm and has a maximum capacity of 30 Ton. The rotation is manual 360º and can be blocked every 90º.

The MEM AC-HV wire from Grani Roc is a machine designed for dressing and slabbing stone blocks. The machine is specially designed to cut horizontally but it can also cut vertically. The machine has an automatic wedging system that makes the horizontal cutting process completely automatic. To cut horizontally gives a higher productivity as well as a higher performance of the tool. Furthermore, a higher productivity is achieve due to the non existence of stop times in loading a loading operations as it happens in the conventional static machines.
·The bridge structure and pillars of the machine are built in laminated steel. All surfaces of contact between the different parts are machined for guaranteeing high precision in assembly and also in the cutting process.
· All the steel elements of the structure are subjected to a surface finishing consisting of a deep cleaning and degreasing treatment, a metallization treatment and corresponding protective layers and painting. These treatments enhance the durability of the machine against
aggressive weather and working conditions.
· The main motor is direct in the main pulley, and it is controlled by an electronic frequency variator –inverter-, that permits to apply progressive linear speed to the wire and its adjustment to optimize the behaviour and performance of the tool.
· The tensioning of the wire is made pneumatic and automatically with indication of wire breakage or shortage. In this way the machine controls automatically the down movement of the machine, adapting it to the optimum working tension of the wire, avoiding possible breakages and optimizing its behaviour.
· The machine has an automatic wedging system which introduces the wedges into the block to be cut using the number of wedges pre-programmed by the operator in the control panel.
· All the main pulleys –drive and tensioning– and guiding wheels are protected by rubber liners in order to get the necessary traction of the wire. Such liners can be easily changed once they are worn out.
· The machine is equipped with an automatic cooling system for the diamond wire with detection of constant water pressure. This system stops the machine in the case of lack or insufficient water flow, protecting the tool and preventing possible deterioration or damage of the equipment.
· All the up and down screws are protected with hoods against dust and water.
· The machines has an automatic greasing system that injects lubricating liquid in the critical parts of the machine ensuring their correct functioning and the long life of the spare parts.
· The control panel, situated in the lateral part of the machine, has all the drive and protection components and devices of all control and safety equipment of the machine. All these components are standard, allowing easy and quick maintenance and / or replacement.

Characteristic Specs
NO MAXIMUM OF THREADS twenty
THREAD DIAMETER 7.3mm
MACHINE HEIGHT (mt) 6.3
MACHINE LENGTH (mt) 10.20
MAXIMUM BLOCK LENGTH (mm) 3500
MAXIMUM BLOCK HEIGHT (mm) 2200
THREAD LENGTH (mt) 22.40
MACHINE VERTICAL TRAVEL (mm) 2400
FLYWHEEL DIAMETER (mm) 1800
MINIMUM CUTTABLE THICKNESS (mm) twenty
MAXIMUM CUTTING WIDTH (mm) 1200
DIAMOND WIRE SPEED 0-35m/sec
MAIN ENGINE POWER (kw) 90

The COMBO equipment from Grani Roc is especially designed to dress the blocks before they go for slabbing in a multiwire saw machine. It is composed of an stationary wire saw, a mobile wire saw and a mobile trolley, allowing to perform two cuts simultaneously.
·The structures and pillars of the machines are built in laminated steel. All surfaces of contact between the different parts are machined for guaranteeing high precision in assembly and also in the cutting process.
· All the steel elements of the structure are subjected to a surface finishing consisting of a deep cleaning and degreasing treatment, a metallization treatment and corresponding protective layers and painting. These treatments enhance the durability of the machine against aggressive weather and working conditions.
· The main motors are controlled by electronic frequency variators –inverters-, that permit to apply progressive linear speed to the wire and its adjustment to optimize the behaviour and performance of the tool.
· The tensioning of the wire is made pneumatic with detection and indication of wire breakage or shortage and stop the machines in case of breakage of the wire.
· All the main pulleys –drive and tensioning– and guiding wheels are protected by rubber liners in order to get the necessary traction of the wire. Such liners can be easily changed once they are worn out.
· The machine is equipped with an automatic cooling system for the diamond wire with detection of constant water pressure. This system stops the machine in the case of lack or insufficient water flow, protecting the tool and preventing possible deterioration or damage of the equipment.
· All the up and down screws are protected with hoods against dust and water.
· The machines has an automatic greasing system that injects lubricating liquid in the critical parts of the machine ensuring their correct functioning and the long life of the spare parts.
· The control panel, situated in the lateral part of the machine, has all the drive and protection components and devices of all control and safety equipment of the machine. All these components are standard, allowing easy and quick maintenance and / or replacement.
· The machines have their own mobile compressor, required for the pneumatic system for tensioning the wire.
· The trolley is 2.300 x 2.300 mm and has a maximum capacity of 30 Ton. The rotation is manual 360º and can be blocked every 90º. The movement of the trolley is controlled by an independent keypad to provide an easy movement and positioning of the trolley in other parts of the factory

Large size block cutter which works with one or more vertical disks and a horizontal disk. Its structure sits on four pillars in order to grant the stability and strenght needed to guarantee an accurate cut.
It is recommended to complete the block cutter with the automatic discharger in order to make the already cut pieces unloading easier.
Different models depending on the amount and the diameter of the vertical disks to be used.

The Two-Wires Saw Machine of Grani Roc is designed for a high slabbing production from stone blocks. The machine has the classic setup of static structure with moving trolley and has an automatic system for changing the thickness between wires. This system makes the machine being very versatile and time saving in changing the thickness of each cut.
·The bridge structure and pillars of the machine are built in laminated steel. All surfaces of contact between the different parts are machined for guaranteeing high precision in assembly and also in the cutting process.
· All the steel elements of the structure are subjected to a surface finishing consisting of a deep cleaning and degreasing treatment, a metallization treatment and corresponding protective layers and painting. These treatments enhance the durability of the machine against aggressive weather and working conditions.
· The main motor is direct in the main pulley, and it is controlled by an electronic frequency variator –inverter-, that permits to apply progressive linear speed to the wire and its adjustment to optimize the behaviour and performance of the tool.
· The tensioning of the wire is made pneumatic and automatically and independent for each wire, with indication of wire breakage or shortage.
· The machine has an automatic system for adjusting the distance between wires, instead of having manual devices or having to remove all the wheels manually for changing the thickness of the slabs to be cut.
· All the main pulleys –drive and tensioning– and guiding wheels are protected by rubber liners in order to get the necessary traction of the wire. Such liners can be easily changed once they are worn out.
· The machine is equipped with an automatic cooling system for the diamond wire with detection of constant water pressure. This system stops the machine in the case of lack or insufficient water flow, protecting the tool and preventing possible deterioration or damage of the equipment.
· All the up and down screws are protected with hoods against dust and water.
· The machines has an automatic greasing system that injects lubricating liquid in the critical parts of the machine ensuring their correct functioning and the long life of the spare parts.
· The control panel is situated in the lateral part of the machine and moves with it. It has all the drive and protection components and devices of all control and safety equipment of the machine. All these components are standard, allowing easy and quick maintenance and / or replacement.
· The machine has its own mobile compressor, necessary for the pneumatic system for tensioning the wire.
· The trolley is 2.300 x 2.300 mm and has a maximum capacity of 30 Ton. The rotation is manual 360º and can be blocked every 90º.

The Two-Wires Saw Machine of Grani Roc is designed for a high slabbing production from stone blocks. The machine is mobile and has an automatic system for thickness changing. These characteristics make the machine being very versatile and time saving in loading and unloading operations as well as changing the thickness of each cut. In this machine the user can input up to 10 different measurements for the thickness of the slabs and the machine will move automatically the wires and also will adapt the movement of the trolley to obtain the desired cuts.
·The bridge structure and pillars of the machine are built in laminated steel. All surfaces of contact between the different parts are machined for guaranteeing high precision in assembly and also in the cutting process.
· All the steel elements of the structure are subjected to a surface finishing consisting of a deep cleaning and degreasing treatment, a metallization treatment and corresponding protective layers and painting. These treatments enhance the durability of the machine against
aggressive weather and working conditions.
· The main motor is direct in the main pulley, and it is controlled by an electronic frequency variator –inverter-, that permits to apply progressive linear speed to the wire and its adjustment to optimize the behaviour and performance of the tool.
· The tensioning of the wire is made pneumatic and automatically and independent for each wire, with indication of wire breakage or shortage.
· The machine has an automatic system for adjusting the distance between wires, instead of having manual devices or having to remove all the wheels manually for changing the thickness of the slabs to be cut.
· All the main pulleys –drive and tensioning– and guiding wheels are protected by rubber liners in order to get the necessary traction of the wire. Such liners can be easily changed once they are worn out.
· The machine is equipped with an automatic cooling system for the diamond wire with detection of constant water pressure. This system stops the machine in the case of lack or insufficient water flow, protecting the tool and preventing possible deterioration or damage of the equipment.
· All the up and down screws are protected with hoods against dust and water.
· The machines has an automatic greasing system that injects lubricating liquid in the critical parts of the machine ensuring their correct functioning and the long life of the spare parts.
· The control panel is situated in the lateral part of the machine and moves with it. It has all the drive and protection components and devices of all control and safety equipment of the machine. All these components are standard, allowing easy and quick maintenance and / or replacement.
· The machine has its own mobile compressor, necessary for the pneumatic system for tensioning the wire

Characteristic Specification
NO MAXIMUM OF THREADS 51
MAXIMUM MACHINE HEIGHT (mt) 7.11
MACHINE LENGTH (mt) 10.18
MAXIMUM BLOCK LENGTH (mm) 3500
MAXIMUM BLOCK HEIGHT (mm) 2200
THREAD LENGTH (mt) 22.45
MACHINE VERTICAL TRAVEL (mm) 2400
MINIMUM CUTTING THICKNESS (mm) 31
DIAMOND WIRE SPEED (m/sec) 0-34
DIAMOND WIRE DIAMETER (mm) 7.3
MAIN ENGINE POWER (kw) 180

The MEB Profiling machine of GRANI ROC is designed for a high precision dressing of blocks and slabbing and profiling production from stone blocks. The machine is composed of a static structure and a mobile trolley. All the movements are controlled by a 2 axes CNC panel board.
· The movements of the machine are controlled by a 2 axes CNC. The data can be input directly in the CNC or by an ISO code file generated by the CAD-CAM software GraniCAD supplied with the machine. This software allows to design the pieces to be profiled, to transfer the *.dxf files to the CNC, to define the parameters of cutting in each step of the cut (speed of cutting, speed of the wire, etc.) and to simulate the path of the wire during the cut.
· Once the profiling file has been input in the machine board, the operator will have the possibility of modifying parameters such as cutting speed, wire speed with a full system of security on possible water shortage, wire broken, wire short or any kind of failure the machine may have.
· The machine has an electric system for bringing closer the small guide wheels that allows the operator to adjust the cutting width until the one desired, reducing the arch value when cutting with diamond wire and thereby increasing its speed.
· The tensioning of the wire is made pneumatic and automatically with indication of wire breakage or shortage. In this way the machine controls automatically the down movement of the machine, adapting it to the optimum working tension of the wire, avoiding possible breakages and optimizing its behaviour.
· All the main pulleys –drive and tensioning– and guiding wheels are protected by rubber liners in order to get the necessary traction of the wire. Such liners can be easily changed once they are worn out
· The machine is equipped with an automatic cooling system for the diamond wire with detection of constant water pressure. This system stops the machine in the case of lack or insufficient water flow, protecting the tool and preventing possible deterioration or damage of the equipment.
· All the up and down screws are protected with hoods against dust and water
· The machines has an automatic greasing system that injects lubricating liquid in the critical parts of the machine ensuring their correct functioning and the long life of the spare parts.
· The control panel is situated in the lateral part of the machine and moves with it. It has all the drive and protection components and devices of all control and safety equipment of the machine. All these components are standard, allowing easy and quick maintenance and / or replacement.
· The trolley is 2.300 x 2.300 mm and has a maximum capacity of 30 Ton. The rotation is manual 360º and can be blocked every 90º

The MEM Profiling machine from GRANI ROC is designed for a high precision dressing of blocks, slabbing and profiling production from stone blocks. The machine is mobile and all the movements are controlled by a CNC panel board. The friendly automation and control of all the systems of the machine along with the characteristic of being mobile, make the machine being very versatile and time saving in loading and
unloading operations as well as changing the thickness and shapes to be cut.
· The movements of the machine are controlled by a 2 axes CNC. The data can be input directly in the CNC or by an ISO code file generated by the CAD-CAM software GraniCAD supplied with the machine. This software allows to design the pieces to be profiled, to transfer the *.dxf files to the CNC, to define the parameters of cutting in each step of the cut (speed of cutting, speed of the wire, etc.) and to simulate the path of the wire during the cut.
· Once the profiling file has been input in the machine board, the operator will have the possibility of modifying parameters such as cutting speed, wire speed with a full system of security on possible water shortage, wire broken, wire short or any kind of failure the machine may have.
· The machine has an electric system for bringing closer the small guide wheels that allows the operator to adjust the cutting width until the one desired, reducing the arch value when cutting with diamond wire and thereby increasing its speed.
· The tensioning of the wire is made pneumatic and automatically with indication of wire breakage or shortage. In this way the machine controls automatically the down movement of the machine, adapting it to the optimum working tension of the wire, avoiding possible breakages and optimizing its behaviour.
· All the main pulleys –drive and tensioning– and guiding wheels are protected by rubber liners in order to get the necessary traction of the wire. Such liners can be easily changed once they are worn out
· The machine is equipped with an automatic cooling system for the diamond wire with detection of constant water pressure. This system stops the machine in the case of lack or insufficient water flow, protecting the tool and preventing possible deterioration or damage of the equipment.
· All the up and down screws are protected with hoods against dust and water
· The machines has an automatic greasing system that injects lubricating liquid in the critical parts of the machine ensuring their correct functioning and the long life of the spare parts.
· The control panel is situated in the lateral part of the machine and moves with it. It has all the drive and protection components and devices of all control and safety equipment of the machine. All these components are standard, allowing easy and quick maintenance and / or replacement.

The SPBO profiling machine of GRANI ROC is designed for a high precision dressing of blocks and slabbing and profiling production from stone blocks.
The machine is composed of a static structure and a mobile trolley. All the movements are controlled by a 2 axes CNC panel board.
· The movements of the machine are controlled by a 2 axes CNC. The data can be input directly in the CNC or by an ISO code file generated by the CAD-CAM software GraniCAD supplied with the machine. This software allows to design the pieces to be profiled, to transfer the *.dxf files to the CNC, to define the parameters of cutting in each step of the cut (speed of cutting, speed of the wire, etc.) and to simulate the path of the wire during the cut.
· Once the profiling file has been input in the machine board, the operator will have the possibility of modifying parameters such as cutting speed, wire speed with a full system of security on possible water shortage, wire broken, wire short or any kind of failure the machine may have
· The machine has an electric system for bringing closer the small guide wheels that allows the operator to adjust the cutting width until the one desired, reducing the arch value when cutting with diamond wire and thereby increasing its speed.
· The structure of the pillars and beam is made of electrowelded and machined tubes. The trolley is composed of electrowelded tubes forming a framework protecting all sensitive parts of the trolley like rod screws, wheels, etc.
· The tensioning of the wire is made pneumatic and automatically with indication of wire breakage or shortage. In this way the machine controls automatically the down movement of the machine, adapting it to the optimum working tension of the wire, avoiding possible breakages and optimizing its behaviour.
· All the main pulleys –drive and tensioning– and guiding wheels are protected by rubber liners in order to get the necessary traction of the wire. Such liners can be easily changed once they are worn out.
· The machine is equipped with an automatic cooling system for the diamond wire with detection of constant water pressure. This system stops the machine in the case of lack or insufficient water flow, protecting the tool and preventing possible deterioration or damage of the equipment.
· All the up and down screws are protected with hoods against dust and water
· The machines has an automatic greasing system that injects lubricating liquid in the critical parts of the machine ensuring their correct functioning and the long life of the spare parts.

The PBO profiling machine of GRANI ROC is designed for a high precision dressing of blocks and slabbing and profiling production from stone blocks. The machine is composed of a static structure and a mobile trolley. All the movements are controlled by a 5 axes CNC panel board.
· The movements of the machine are controlled by a 5 axes CNC. The data can be input directly in the CNC or by an ISO code file generated by the CAD-CAM software GraniCAD supplied with the machine. This software allows to design the pieces to be profiled, to transfer the *.dxf files to the CNC, to define the parameters of cutting in each step of the cut (speed of cutting, speed of the wire, etc.) and to simulate the path of the wire during the cut.
· The machine has an electric system for bringing closer the small guide wheels that allows the operator to adjust the cutting width until the one desired, reducing the arch value when cutting with diamond wire and thereby increasing its speed
· The guiding wheels are controlled by the CNC and independent motors which allows to position the wheels in the direction of the cut, permitting a faster speed of cutting when profiling.
· The structure of the pillars and beam is made of electro welded and machined tubes. The trolley is composed of electro welded tubes forming a framework protecting all sensitive parts of the trolley: screws, wheels, etc.
· The tensioning of the wire is made pneumatic and automatically with indication of wire breakage or shortage. In this way the machine controls automatically the down movement of the machine, adapting it to the optimum working tension of the wire, avoiding possible breakages and optimizing its behaviour.
· All the main pulleys –drive and tensioning– and guiding wheels are protected by rubber liners in order to get the necessary traction of the wire. Such liners can be easily changed once they are worn out
· The machine is equipped with an automatic cooling system for the diamond wire with detection of constant water pressure. This system stops the machine in the case of lack or insufficient water flow, protecting the tool and preventing possible deterioration or damage of the equipment.
· All the up and down screws are protected with hoods against dust and water
· The machines has an automatic greasing system that injects lubricating liquid in the critical parts of the machine ensuring their correct functioning and the long life of the spare parts.
· The control panel has all the drive and protection components and devices of all control and safety equipment of the machine. All these components are standard, allowing easy and quick maintenance and / or replacement.
· The motorised 360º turntable trolley is controlled by the CNC and has a “Backlash” system that permit the production of complex shapes as balls, screws, etc.

The PBO profiling machine of GRANI ROC is designed for a high precision dressing of blocks and slabbing and profiling production from stone blocks. The machine is composed of a static structure and a mobile trolley. All the movements are controlled by a 5 axes CNC panel board.
·The movements of the machine are controlled by a 6 axes CNC. The data can be input directly in the CNC or by an ISO code file generated by the CAD-CAM software GraniCAD supplied with the machine. This software allows to design the pieces to be profiled, to transfer the *.dxf files to the CNC, to define the parameters of cutting in each step of the cut (speed of cutting, speed of the wire, etc.) and to simulate the path of the wire during the cut.
· The machine has an electric system for bringing closer the small guide wheels that allows the operator to adjust the cutting width until the one desired, reducing the arch value when cutting with diamond wire and thereby increasing its speed
· The guiding wheels are controlled by the CNC and independent motors which allows to position the wheels in the direction of the cut, permitting a faster speed of cutting when profiling.
· The structure of the pillars and beam is made of electro welded and machined tubes. The trolley is composed of electro welded tubes forming a framework protecting all sensitive parts of the trolley: screws, wheels, etc.
· The tensioning of the wire is made pneumatic and automatically with indication of wire breakage or shortage. In this way the machine controls automatically the down movement of the machine, adapting it to the optimum working tension of the wire, avoiding possible breakages and optimizing its behaviour.
· All the main pulleys –drive and tensioning– and guiding wheels are protected by rubber liners in order to get the necessary traction of the wire. Such liners can be easily changed once they are worn out
· The machine is equipped with an automatic cooling system for the diamond wire with detection of constant water pressure. This system stops the machine in the case of lack or insufficient water flow, protecting the tool and preventing possible deterioration or damage of the equipment.
· All the up and down screws are protected with hoods against dust and water
· The machines has an automatic greasing system that injects lubricating liquid in the critical parts of the machine ensuring their correct functioning and the long life of the spare parts.
· The control panel has all the drive and protection components and devices of all control and safety equipment of the machine. All these components are standard, allowing easy and quick maintenance and / or replacement.
· The motorised 360º turntable trolley is controlled by the CNC and has a “Backlash” system that permit the roduction of complex shapes as balls, screws, etc.

The new NDF 6840/35 multiple diamond wire cutter is a multi-wire machine designed to produce panels and plates of variable thickness from large blocks of granite and natural stone. This new unit represents the most modern technology in terms of the primary sawing of stone blocks, becoming the alternative to traditionally used sawing methods, since it quantitatively improves production capacity, efficiently taking advantage of the energy resources necessary to the production of materials and significantly reducing the production costs of the cutting phase.
The multiple diamond wire cutter is a machine that stands out for its efficiency and high productivity, designed to obtain high yields, characterized by its great robustness, thanks to its particular design that forms a compact, balanced and compensated unit where all the movements are concentrated, and its proven reliability and that of the elements that compose it, all of it being designed to withstand the harshest working conditions.
The main structure of the machine is basically made up of two robust columns made up of mechano-welded steel structures, connected to each other by an upper crossbar. The structure of the main frame is mounted on both columns, which joins the two handwheel-carrying carriages, which move vertically supported by both columns on linear guides with recirculating linear roller skates and driven by a pair of laminated spindles with recirculating nuts. balls, synchronized and activated by two motor-reducers with independent servomotors for the ascent/descent of the wires with a smooth and precise displacement, located in the upper part of both columns, the entire guide assembly is perfectly protected by PVC bellows .
The Ø1800 driving drum is made up of a single pulley with multiple channels with grooves and connected to the main motor by means of a pulley and toothed belt transmission. The wires are positioned manually depending on the desired thickness, supported on one side of the machine on the drive drum, and in turn are tensioned from the opposite end by autonomous pulleys. The diamond wires are also guided by two multi-channel drums that help to significantly reduce the deflection produced by them. At the end opposite the drive drum, the diamond wires rest on the set of idler pulleys, designed with a particular pivoting extraction system, which significantly reduces maintenance times.
Once the threads are located, they are adjusted with the active tensioning device that acts individually on each one of the tensioning pulleys, independently ensuring that each one of the threads has the same tension regardless of the minimum differences in length that exist between them. each of the threads that are installed in the machine. The tensioning system manages to increase the useful life of the threads and therefore the profitability of the machine.
The entire machine is characterized by the robustness and reliability of the elements that make it up, all of it being designed to withstand the harshest working conditions, and in this aspect it is precisely where we can contribute all the experience accumulated over the years that we have been designing and manufacturing machinery for this sector.
The NDF 6840/35 multi-wire cutter stands out for the following characteristics:
– Reduced and optimized energy consumption.
– Mechanical robustness and absence of vibrations.
– Active and independent tensioning system, which manages to increase the useful life of the threads, increasing profitability and guaranteeing optimal surface finishes.
– Innovative pulley design, with pivoting extraction system that reduces maintenance times.
– Complete range of cutting thicknesses, thanks to its particular design of pulley packs and combination of grooves, without penalizing the useful life of the diamond wire.
– Excellent cutting precision and flatness, thanks to its particular linear slide guide system and its rigid bearing structure.
– Easy and comfortable access to the inside of the machine, thus facilitating the tasks of changing threads and their maintenance.
– Helical ball screws of large diameter in the vertical movement for a smooth and precise displacement.
– Servomotors synchronized by software in the vertical movements that ensure smoothness in the cut, low consumption, maximum precision and avoid clearances and problems of the central motorization with transmission and forwarding.
– Up to 35 threads with several possibilities for the combination of cutting thicknesses.
– Pre-installation for thread change from Ø7.3 to Ø6.3.

The new NDF 6870/70 multiple diamond wire cutter is a multi-wire machine designed to produce panels and plates of variable thickness from large blocks of granite and natural stone. This new unit represents the most modern technology in terms of the primary sawing of stone blocks, becoming the alternative to all traditionally used sawing methods, since it improves the productive capacity quantitatively, efficiently taking advantage of the necessary energy resources. for the production of materials and significantly reducing the production costs of the cutting phase.
The multiple diamond wire cutter is a machine that stands out for its efficiency and high productivity, designed to obtain high yields, characterized by its great robustness, thanks to its particular design that forms a compact, balanced and compensated unit where all the movements are concentrated, and its proven reliability and that of the elements that compose it, all of it being designed to withstand the harshest working conditions.
The main structure of the machine is basically made up of two robust columns made up of mechano-welded steel structures, connected to each other by an upper crossbar. The structure of the main frame is mounted on both columns, which joins the two handwheel-carrying carriages, which move vertically supported by both columns on linear guides with recirculating linear roller skates and driven by a pair of laminated spindles with recirculating nuts. balls, synchronized and activated by two motor-reducers with independent servomotors for the ascent/descent of the wires with a smooth and precise displacement, located in the upper part of both columns, the entire guide assembly is perfectly protected by PVC bellows .

The Ø1800 driving drum is made up of a single pulley with multiple channels with grooves and connected to the main motor by means of a pulley and toothed belt transmission. The wires are positioned manually depending on the desired thickness, supported on one side of the machine on the drive drum, and in turn are tensioned from the opposite end by autonomous pulleys. The diamond wires are also guided by two multi-channel drums that help to significantly reduce the deflection produced by them. At the end opposite the drive drum, the diamond wires rest on the set of idler pulleys, designed with a particular pivoting extraction system, which significantly reduces maintenance times.
Once the threads are located, they are adjusted with the active tensioning device that acts individually on each one of the tensioning pulleys, independently ensuring that each one of the threads has the same tension regardless of the minimum differences in length that exist between them. each of the threads that are installed in the machine. The tensioning system manages to increase the useful life of the threads and therefore the profitability of the machine.
The entire machine is characterized by the robustness and reliability of the elements that make it up, all of it being designed to withstand the harshest working conditions, and in this aspect it is precisely where we can contribute all the experience accumulated over the years that we have been designing and manufacturing machinery for this sector.
The NDF 6870 multi-wire cutter stands out for the following characteristics:
• Reduced and optimized energy consumption.
• Mechanical robustness and absence of vibrations.
• Active and independent tensioning system, which manages to increase the useful life of the threads, increasing profitability and guaranteeing optimum surface finishes.
• Innovative pulley design, with pivoting extraction system that reduces maintenance times.
• Complete range of cutting thicknesses, thanks to its particular design of pulley packs and combination of grooves, without penalizing the useful life of the diamond wire.
• Excellent cutting accuracy and flatness, thanks to its particular linear slide guide system and its rigid bearing structure.
• Easy and comfortable access to the inside of the machine, thus facilitating the tasks of changing threads and their maintenance.
• Large diameter helical ball screws in the vertical movement for smooth and precise movement.
• Servomotors synchronized by software in the vertical movements that ensure smoothness in the cut, low consumption, maximum precision and avoid clearances and problems of the central motorization with transmission and forwarding.
• Up to 70 or 72 threads with several possibilities for the combination of cutting thicknesses.
• Pre-installation for thread change from Ø7.3 to Ø6.3.
– STRONG POINTS:
The multiple diamond wire cutter is a multi-wire cutter designed to produce slabs and boards of variable thickness from large blocks of granite and natural stone. Traditionally in granite transformation factories, the sawing of blocks is being carried out to the same size with looms when the blocks are large, or with large diamond disc block cutters in stonework workshops when semi-blocks are cut.
The greatest aspect to highlight is that the multi-wire cutter, for an equivalent capacity, the effective energy consumption is lower compared to any of the methods used. This translates into significant energy savings both in implementation and in production costs. This difference in equivalent energy savings is mainly due to the difference in sawing technology, the multi-wire saw only uses up to 70 or 72 loops of diamond wire and water during this process, cutting continuously. These diamond wires are basically made up of a steel cable covered by diamond rings along the cable, The cutting effect on the stone block to obtain the slabs and boards is produced by the effect of the continuous dragging movement of the threads at a linear speed of about 30 m/sec. combined at the same time with the rotation of the rings, producing a very high cutting power, a differentiated effect with respect to large traditional looms where the cutting process can be defined as the effect of a jigsaw, made up of a frame that houses about 100-130 strips of steel in contact with the stone blocks at the same time moving c in combination with the rain of abrasive mixture of water, steel shot and lime, which produces the same number of incisions in the stone block as quantity of strapping
The multiple diamond wire cutter is the alternative to the primary sawing methods currently used, improving the productive capacity quantitatively, efficiently taking advantage of the energy resources necessary for the production of materials and significantly reducing the waste produced during the cutting phase.
Comparatively, the advantages of using this new technology applied to the multi-wire cutter are evident. The multi-wire cutter can cut any type of stone material compared to the looms that only cut granite or marble, but they are two different models and use different tools, the looms are only profitable when they cut sheets of 2-3 centimeters in length. thickness, but its greatest disadvantage is in energy consumption and the very high production of solid waste, since the water used is recovered in all cases, this waste, apart from assuming a higher purification cost, presents a problem of environmental pollution in case of the looms since it contains iron, and the lime that alters the acidity of the waters, In addition, at the moment it is not possible to separate or recover at this stage of the process. Compared to traditional block cutters, there is an important difference that lies in the cutting height, with a disc we can cut 1.50 meters compared to the diamond wire that can cut any commercial block, apart from the great productive difference that exists.
The water treatment and purification process for this new process is therefore cheaper and less complex.
It is also worth noting that the water needs, although similar to the traditional loom, diamond wire cutting practically eliminates the need to wash the load after sawing, this being much less demanding and both the needs and the water losses during the cutting process are lower.
Another aspect to highlight is that the multi-wire cutter, for an equivalent capacity, the effective energy consumption is lower compared to any of the methods used. This translates into significant energy savings both in implementation and in production costs.
Regarding the consumables, to say that in the multithread cutter there is only one; the diamond wire, of small volume, easy storage and simple supply. The costs derived from storage, stock scheduling and handling are also lower than the strap, shot and lime, necessary for the traditional loom.
In reference to the implementation costs, in the first place the simplicity and the consequent lower cost of the civil works stand out, while in the loom the necessary work constitutes an indispensable part of it, in the multi-wire cutter, this becomes a mere support for it. In addition, in the case of renewal or replacement of the machine, the loom forces the new implementation to be exactly the same model as the previous one, while in the case of the multi-wire cutter there is a high degree of possibility of being able to adapt the existing civil works. In any case, it is important to say that the space occupied by the multiwire cutter is less.
The simplicity of the multi-wire cutter is significantly greater, both in installation, use and handling, as well as in maintenance, both in the mechanical and electrical aspects. It is important to note that the NDF-6870 multi-wire cutter does not use the common solution for vertical movement consisting of a central motor with gearbox, transmissions and angular gearboxes. This is replaced by two independent and electronically synchronized servomotors without coupling between them. This solution, in effect, eliminates the drawbacks of the classic mechanical transmissions, the gaps and possible breakage due to wear and fatigue, and also allows us greater flexibility in the movements to be carried out. In this aspect, it should be noted that the system is capable of working at speeds as slow as one millimeter per minute,
As a practical effect, the NDF-6840/35 cutter is the fastest machine on the market capable of performing a vertical upward movement in the face of any contingency, avoiding undesirable diamond wire marks on the stone.
The surface of the final product sawn with the diamond wire, in addition to the fact that it practically does not need washing, much less the use of acids or harmful chemical products that are dangerous to handle, offers the important advantage that its surface condition can be assimilated to a certain honed In the event that the material must be polished later, a certain reduction in costs associated with the abrasives used in the polishing process and the consequent reduction in production times should be noted.
The high speed of the multi-wire cutter will also allow new users of this technology to schedule production with less notice and greater flexibility than the loom, even allowing a block to be partially cut and the rest to be reserved for a more appropriate time. .
The flexibility of production is also given by the need for clearly lower staff. Preparing the saw on a string saw for a cut consumes less than half the time and less than half the human resources of a traditional strap loom.
With this cutting unit it is intended to integrate the fully automated operation of the primary sawing of stone blocks, with minimal human intervention and therefore a significant reduction in product handling maneuvers, regularization and optimization of the work processes, the increase in production capacity thanks to the reduction of cycle times and the efficient use of downtime, the reduction of energy consumption and the production of waste during the cutting process, and finally the reduction of the associated risks for the personnel involved in the handling and machining of materials throughout each working day.

– WHY BUY OUR CUTTING MACHINE:
The use of diamond wire in primary sawing work has been used in the sector for not many years, and said wire is applied on known machines, normally made up of two pulleys on which a wire is installed. forming a closed loop with which the cuts are made on the stone blocks.
In recent years, machines that use several diamond wires have begun to be used, which are mounted on drums with multiple channels or made up of several pulleys, on which several wires are mounted in order to make several cuts at the same time on the stone blocks, thus obtaining significant productions.
The machines used up to now present different technical problems when it comes to correctly tightening and controlling the loops of wire, in addition to another more significant one, which lies in the possibility of easily varying the position of the pairs of wires with in order to obtain different thicknesses or vary them in the production of boards.
Taking these disadvantages into account, the N.6870 cutter stands out for its simplicity in the device for individual tensioning of the tensioning wheels, and at the same time the variation of processing thicknesses in the slabs and boards to be cut has been simplified in a simple and easy.
NODOSAFER offers its customers, in addition to all the intrinsic characteristics of any wire machine, important improvements such as:
• Architecture based on a robust and compensated structure to avoid vibrations.
• Maximum protection against the penetration of water and dust in the most sensitive parts.
• Helical ball screws of large diameter in the vertical movement for a smooth and precise movement.
• Linear roller recirculation guides on the columns to guarantee the absolute verticality of the cut.
• Servomotors synchronized by software in the vertical movements that ensure smoothness in the cut, low consumption, maximum precision and avoid clearances and problems of the central motorization with transmission and forwarding.
• Large diameter drive drum basic mechanism that prolongs line life.
• Automatic tensioning device by independent pulleys of each one of the threads, with control of position, arrow and tension of each one of the threads.
• Automatic and progressive speed reduction in case of excessive deflection in the line.
• Detection of wire breakage and controlled stop (rapid braking and rising at maximum speed)
• Controlled emergency stop to avoid marks on the cut block.
• Possibility of resuming a cut automatically or semi-automatically.
• Wide range of devices and program functions for operator and machine safety.
• Motorized trolley with optional position control.
• Color operator panel with great ease of use and multiple configuration possibilities.
• Compact electrical panel with the latest technologies.
• High power main motor driven by inverter.
• Button panel for movements in manual mode.
• Automatic lubrication.
- SECURITY
NODOSAFER machines are protected and provide a security closure around their perimeter in accordance with CE security standards.
– BLOCK TROLLEYS
The machine has TWO (2) standard built-in block carriers.

STRUCTURE AND DESIGN
The Multiple Diamond Wire Cutter N.6870/72 is a multi-wire machine designed to produce slabs and plates of variable thickness from granite and natural stone blocks.
The structure of the machine is basically made up of two robust columns made up of mechanically-welded steel structures, connected to each other by an upper crossbar. The structure of the flywheel-carrying main frame is mounted on both columns, which moves vertically supported by linear guides with
recirculating linear roller skates and driven by a pair of laminated spindles with recirculating ball nuts, synchronized and driven by two motors. -reducers with servomotors for raising/lowering the wires, located in the upper part of both columns, the entire guide assembly is perfectly protected by PVC bellows.
The entire machine is characterized by the robustness and reliability of the elements that make it up, all of it being designed to withstand the harshest working conditions, and in this aspect it is precisely where we can contribute all the experience accumulated over the years that we have been designing and manufacturing machinery for this sector.
MOTOR DRUM AND TAMBORINOS
The driving drum is made up of a single pulley with multiple grooves and connected to the main motor by means of a pulley and toothed belt transmission. The wires are positioned manually depending on the desired thickness, supported on one side of the machine on the drive drum, and in turn are tensioned from the opposite end by autonomous pulleys.
The drums, like the drive drum, are vulcanized, which increases their useful life and allows continuous work on the machine without delaying tire change downtimes. A movement in both directions of the tambourines allows the channel to be changed quickly and efficiently in the event that
a channel is excessively worn or a thread has not worked effectively. This method contrasts significantly with the change of tires that exists in other types of equipment since it significantly reduces the maintenance of the machine and allows work to be resumed in a considerably shorter period of time.
TENSIONING SYSTEM
The STA is a combination of tensioning systems patented by NODOSAFER that allows the useful life of the threads to be increased, also increasing profitability and guaranteeing optimum surface finishes.
The tensioning is characterized by the individual control of the deflection of each one of the threads, allowing the machine to automatically detect the arc described at all times and tend to equalize the horizontality of all the threads, so that the times block cutting completion times decrease and the consumption of the machine is uniform and balanced. This system also increases the useful life of each thread since, as significant arcs are not formed, all the threads work in a similar way without supporting excessive tensions.
The diamond wires are also guided by two small multi-channel drums that help to significantly reduce the deflection produced by them.
The Cutter N.6870/72 allows to cut a maximum of 2000 mm wide at 21 mm thick, allowing to obtain 71 sheets.
SYSTEM OF PULLEYS, TENSION PULLEYS AND FREE PULLEYS
Innovative pulley system, with pivoting extraction system, which considerably reduces maintenance times. The pulley change is carried out quickly and efficiently without having to disassemble the entire assembly, thanks to their design since with a small maneuver the desired set of pulleys is disassembled in record time.
Once the threads are located, they are adjusted with the tensioning device that acts individually on each one
of the tensioning pulleys, independently ensuring that each one of the threads has the same tension
regardless of the minimum differences in length that exist between each one . one of the threads that are installed on the machine.
HAIR COMB
CONTROL PANEL AND ELECTRICAL PANEL
In the electrical and control installation section, it is worth highlighting the installation of state-of-the-art automatons with programs custom designed by our technicians, so that the programming of the machine is as simple as possible, thus avoiding losses of unnecessary time. The programming of the work cycle and the visualization of its sequence is carried out on an operator terminal with a screen, where all the parameters of the cutting cycle are displayed.
A very intuitive and visual display and a radio control complete the maneuverability of the machine as well as the comfort for the operator to carry out his work safely and precisely.
VERSATILITY
The design of the N6870/72 allows, for everything described above, that the operation of the machine by the customer is very simple and intuitive. Each of the required parameters is controlled from the screen and when changing the thickness to be cut, the simple programming of the display indicates the position of each thread on the pulleys and drums without the possibility of error.
SECURITY
NODOSAFER machines are protected by a security closure around their entire perimeter, complying with CE security regulations.
BLOCK TROLLEY
The machine has a motorized block carrier carriage incorporated as standard.

Characteristic Specification
NO MAXIMUM OF THREADS 39
WIRE DIAMETER (mm) 5.3
MACHINE HEIGHT (mt) 7.65
MACHINE LENGTH (mt) 11.40
MAXIMUM BLOCK LENGTH (mm) 3500
MAXIMUM BLOCK HEIGHT (mm) 2200
LENGTH OF WIRES (mt) 23.40
VERTICAL MACHINE TRAVEL (mm) 2400
FLYWHEEL DIAMETER (mm) 1800
MINIMUM CUTTING THICKNESS (mm) twenty-one
MAXIMUM CUTTING WIDTH (mm) 1003
DIAMOND WIRE SPEED (mt/sg) 0-40
MAIN MOTOR POWER (Kw) 185

Characteristic Specs
NO MAXIMUM OF THREADS 60-62
MAXIMUM MACHINE HEIGHT 7.65 meters
MACHINE LENGTH 11.40 meters
MAXIMUM BLOCK LENGTH 3500mm
MAXIMUM BLOCK HEIGHT 2200mm
THREAD LENGTH 23.50m
MACHINE VERTICAL TRAVEL 2400mm
FLYWHEEL DIAMETER 1800mm
WIDTH OF CUT 1600mm
MINIMUM CUTTING THICKNESS 21mm
DIAMOND WIRE SPEED 0-40m/sec
DIAMOND WIRE DIAMETER 6.3-5.3mm
MAIN MOTOR POWER 355kw

NODOSAFER slicers are very solid and precise machines, characterized by their robustness, great production versatility and easy handling.
These slicers are equipped with the latest technological advances in terms of their particular mechanical and electronic design. Particularly noteworthy is the linear guide system of the headstock bridge, supported by two longitudinal beams, parallel to the cutting table, with precision linear guides and high-precision, high-rigidity recirculating ball slides, on which it moves, to carry out cutting work.
All movements have speed regulation through an electronic variator and the motors have a built-in brake to achieve precise stops.
In the management and control section, it is worth noting the implementation of state-of-the-art automatons with programs custom designed by our technical department, so that the programming of the machines is as simple as possible for the operators, thus avoiding unnecessary waste of time. The programming of the work cycle and the display of its sequence is carried out on an operator terminal with a touch screen, where all the work parameters are displayed, as well as the cutting cycles.