Granite Giant Disc Bridge Saw Machine

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。

1) Siemens smart PLC control system makeshigh automation performance and easy.
2) Adopts 4 pillars for spindle sliding, which ensure the structure of the machine is steady and the lifting is stable.
3) Two-slider frame structure driven synchronized by screw with high stiffness and stability.
4) Sliding system of X and Y axes on linear guides and racks both in oil bath lubrication grants smooth and high production.