Basalt Giant Disc Bridge Saw Machine in Italy

Large-sized electronic bridge sawing machine for cutting stone material.
Very strong and stiff iron casting structure with double beam, mechanically worked by using high quality and precision systems.
Features
THE UNIQUE FEATURES OF COMANDULLI P.B.N.E. 350 MACHINE
Spindle sliding on an assembly of iron casting guides and special frictionless pads in oil bath.
Spindle sliding kinematical motion through a timing belt system with variable speed.
Bridge traverse on special steel guides with ball rollers in oil bath.
Bridge traverse kinematical motion through a pinion/rack system in oil bath with variable speed.
Spindle axis assembled on bearings in oil bath driven by an electric motor through V-belts.
Spindle lifting on round guide with screw kinematical motion with variable speed.
Turntable on a special ball-bearing pivot block, particularly sensitive, with a full load too.
Machine with fast movements and soft at the same time, and particularly silent.
The machine is supplied with water system with solenoid valve and flow-indicator, which stops the machine automatically in case of water lack.
Electrical board at floor level and hanging push- button control panel.
Linear laser for material alignment.
Metallized, cataphoresis treatment.
Main covers in stainless steel.
OPTIONS
There is always enough room for some further desires.
Bench with automatic rotation and precision locking each 45°
Electronic positioning on 360°. Bench rotation visualisation
with control 1/100°.
Adjustable disc rotation speed (inverter): 500:2000 g/1′.
Silenced disc guard.
Possibility to work on more than one bench.

Large machine ideal for small, medium and large companies for cutting stone, marble and granite, both in manual and automatic cycle. This machine also performs complex profiles and shapes on a very large cutting surface.
Max blade size of 1600 mm (63 in) - 2000 mm (78.7 in) optional.
Machine built in cast iron and protection covers in stainless steel.
The standard machine is supplied with the following:
- fixed head for marble and granite;
- optical template scanner;
- manual rotating table (optional: programmable automatic table);
- eletronic variable speed on the disc motor;
- software POLIAX for control;
- 12" touchscreen colour display with LAN connection and USB port;
- folding door solid panel safety barriers.

FEATURES
Max blade size of 1600 mm (63 in).
Up to 1200 mm of diameter, 32 blades can be mounted, for diameters ranging from 1300 to 1600 the following treatment is used: from 13 blades of maximum diameter 1100 mm and from 13 with diameter ranging from 1300 to 1600 mm.
Protections all made of stainless steel for a long-lasting life.
Attachments on request:
- inverter, electronic variator of the speed of rotation of the vertical blades (400-800 rpm) and of the horizontal blade (1400-2000 rpm) for power of 125-150 hp;
- extra 2,2 x 3 m trolley;
- additional machined rail to extend the loading length by multiples of 3 m;
- additional unworked rail to extend the loading length by multiples of 3 m;
- flange Ø 370 mm;
- spacers 280 - 370 mm.

FEATURES
Load-bearing structure composed of four vertical columns joined together by crossbeams
Bridge-trolley unit lifted by means of four screws guided by sliders with slide blocks made of anti-friction material; the entire unit is protected by a stainless steel guard.
Vertical movement is performed by means of a self braking gearmotor driven by inverter.
Large-sized shoulders with milled surfaces and hardened steel interchangeable tracks on which the disc-carrying bridgetrolley unit slides. Sliding takes place on roller cages in oil bath protected by PVC bellows.
The overhead bridge unit with a robust electrowelded steel structure in which two V-shaped guides have been formed for the trolley to slide on.
A self-braking gearmotor driven by inverter is used to drive the trolley, fitted with a braking device positioned on the opposite side to the gearmotor to guarantee its correct and stable positioning during cutting.
A rack and pinion with slanting teeth and corresponding inverterdriven gearmotor are used to translate the overhead bridge unit.
Disc-carrying trolley sliding on broad cross-section cast iron prismatic slide blocks in oil bath protected by special guards. Movement is performed by means of a rack and pinion with slanting teeth and corresponding inverter -driven gearmotor.
Ø 210 mm disc shaft, for the simultaneous use of 50/75 1000 mm diameter discs.
To guarantee a long service life and maximum resistance to corrosion, all the surfaces have been sand-blasted, galvanised and carefully painted with dual component epoxy paints.
On request, the machine can be supplied in a version performing the simultaneous cut of two blocks.

AUTOMATIC ELECTRONIC BLOCK-CUTTER FOR MARBLE AND GRANITE
Sawing machine able to transform marble and granite blocks into semimachined slabs having a maximum height of 1500 mm and the thickness desired.
FEATURES
Max blade size of 3500 mm (137.8 in).
Block holder trolley with electronically-controlled positioning with decimal tolerances and adjustable speed.
Movement of the blade holder slide drivens by a rack-pinion on guides in oil bath, free of maintenance with protections made of stainless steel. Separate regulation of the cut/return speed and the head limit stops from the control board.
Possibility to program a reduction of cut increment at the beginning of the cycle to facilitate the entrance of the blade in the block.
Columns, bridge and operating head made of highly resistant cast iron and protections of stainless steel for a perfect dimensional stability and a long-lasting life.
Switchboard including all the operating controls and the colour display. The POLYAX COLOR controls 3 axes of movement.
Possibility to set in multiple cuts 9 diff erent translation measures, repeatable up to 99 times. Possibility to program up to 9 different cutting heights and lenghts in order to work at the same time with blocks having different sizes.
Attachments on request:
- extra 2,2 x 3 m trolley;
- additional machined rail to extend the loading length by multiples of 3 m;
- additional unworked rail to extend the loading length by multiples of 3 m;
- inverter electronic variator of the speed of rotation of the vertical blades (150-300 rpm) for motor up to 50 hp;
- binario grezzo supplementare per allungare la corsa di carico di 3 metri;
- inverter variatore elettronico della velocità di rotazione dei dischi verticali (150-300 rpm) per motore fino a 50 hp.

MAXI 3000 RX and MAXI 3500 RX are sawing machines with a jumbo disc for cutting marble and granite at the desired thickness. These machines follow the Simec philosophy of the NT2 block cutters, with 2 columns fixed to the ground and the mobile block carrying trolley, to guarantee the absence of vibration, high productivity and long diamond lifetime.

4 columns block cutter for cutting granite, lava stone and marble blocks into strips by means of a set of vertical diamond discs and a horizontal disc. It works on stationary block.
M585 is available in several versions according to the vertical discs maximum diameter (from 1300 to 1700 mm) and to the maximum number of vertical discs (34 or 56 discs). It can be equipped with automatic or semi-automatic unloaders.
This 4 columns machine cuts stationary block and produces 460/650 max. wide strips with thickness dimension from 10 mm for modulgranito up to 80 mm for paving stones.
The machine can work even without block carrier trolleys since all movements are performed by its operational units.
M585 machine maintains in time top cutting precision with minimum diamond discs consumption and very reduced costs for production maintenance and depreciation.
The four holding columns, with their large foot bases strongly fixed to the foundation, are stiffened at the top ends through sturdy connecting beams and side ribs.
Four sliders, that move along the columns, support the transversal beams/bridge assembly. All such components, that were made in normalized large thickness steel work, form an extremely rigid structure.
The discs holder trolley, driven by a gear motor/pinion/rack system, slides along two “V” guides in oil bath with the interposition of anti friction slides.
In addition to this, four contrast wheels compact trolley and bridge to realize a “ clearance- free”trolley sliding system.
The discs stack, that is positioned on the trolley/bridge assembly centreline, favours the whole discs holder trolley mass to integrate in a balanced way the contrast wheels action.
Oleodynamic plungers lock automatically the two mobile uprights to the transversal beams during the vertical cutting phase.
Owing to this peculiar construction technology, M585 reduces to zero the discs traction action on the trolley, eliminates vibrations and realizes high quality cuts combined with very reduced diamond consumption.
The cutting parameters are pre set through the key board. Work cycles are controlled through PLC, positions and parameters are visualized in real time on display.
All motion motors are controlled through vectorial inverters and the movements precision is ensured though position digital transducers(encoder).
The inverter for main motor speed control and adjustment, particularly recommended for the optimal discs utilization, is available as optional.
The large dimension remote electric panels are air-conditioned by means of a heath exchanger and are dust proof and water proof in compliance with I P 54 ( EN 60529) standards.

This AUTOMATIC CYCLE machine, that was designed for the sawing of 1000 max. high blocks, is targeted to the production of large thickness slabs for tombstone art, building elements and paving stones.
The axis positioning is ensured by a PLC controlled system that comprises electronic vector regulators (inverters) and position digital transducers (encoders).
Disc down feed can be programmed during last phase of each cutting stroke thus permitting stroke immediate reciprocation and consequent “PENDULAR” motion that eliminates unproductive time.
The machine is equipped with VANISHING DISC that reduces noise level in any working position. Owing to the components high quality, to the sturdiness and precision of the mechanical parts, M950EF is an highly productive and reliable machine that maintains its great efficiency in time.
Two large contact surface “V” guides, machined onto the bridge, allow for trolley clearance- free sliding driven by a rack/pinion system.
Anti friction slides between trolley and bridge and continuous lubrication oil pits cut along the “V” guides enable the trolley stroke to be smooth and without vibrations even in case of high travelling speed.
Contrasting wheels, that compact trolley and bridge, allow discharging of the cutting stress directly onto the foundations.
The disc holder unit comprises an upper platform for main motor mounting and the spindle assembly that are connected to form a sole body through three ground chrome plated large diameter columns that slide vertically into protected housings machined onto trolley structure.
The two columns in front position absorb longitudinal stress caused by cutting action and improve disc performance.
Vertical displacement is driven in a balanced way through two synchronized screw/lead nut systems motioned by encoder controlled gear motor.
Bridge moves along two track ways fixed onto foundations. Bridge transversal displacement is driven through two rack/pinion systems that are synchronized through a connecting shaft motioned by an encoder equipped and inverter adjusted speed gear motor.
Bridge sliding along track ways is guided through two pairs of bearing wheels, with large centreline distance (1200 mm), that ensure bridge stability.
A system of auxiliary contrast wheels reacts to all vertical stress and allows for a very smooth disc performance。