Equipment for Breton marble and/or granite slab polishing lines

Good morning,

Today I’d like to talk about the equipment complementing the Breton marble and/or granite slab polishing lines.

Every marble and/or granite slab polishing line is outfitted with facilities for the slab loading/unloading, besides the polisher, of course:

JOT - Loader/Offloader for "diamond-match pattern" polished slabs.

RG - Motorized turn-table.

CAL/S/2000 - Automatic slab loader with 6 suction cup.

CAL/S/2000/1V - Automatic slab loader with 1 suction cup.

Tilting roller convejor.

Jib crane complete with hoist.

 

SCAL/S/2000 - Automatic slab unloader with 6 suction cup.

SCAL/S/2000/SV - Automatic slab unloader with 1 suction cup.

System for taking high-resolution photos of natural stone slabs, and for their filing, coding and labelling.

IMAGEPLUS

IMAGEPLUS

IMAGEPLUS

Various machinery, 

Drying units.

Unloading system with automatic selection trolleys.

APP - Automatic equipment to apply point of protective polymer on the slabs.

APL- Automatic applicator of the protective polyethylene sheet.

CG200/4 - Automatic waxing machine for marble/granite slabs.

CG200/4 - Automatic waxing machine for marble/granite slabs.

As you can see, Breton range is wide and offers different solutions in order to compose your marble and/or granite slab polishing line to your liking.

Ask for an estimate right now to mail@breton.it.
We will reply you shortly.
By-by 
Sergio Prior

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Levibreton KFM - Polishing lines for marble strips

Polishing lines for marble strips: 

CONFIRMATION OF EXCELLENCE
Many years ago Breton was the first company to present continuous polishing systems for marble, revolutionising the industry.
Today, Breton with the new Levibreton KFM series confirms its leadership in polishing systems for marble by offering, as always, highly reliable and innovative technological solutions, guaranteeing constant and superior machine performance over time.
A Levibreton KFM to satisfy any polishing requirement
The Levibreton KFM are available in various configurations and with various fittings, and they can operate as individual units or can be integrated into a complete processing plant. They can be fitted with calibrating spindles or polishing spindles and the number of spindles mounted can vary depending on the Customer’s precise production requirements.
High-power and High-precision calibrating units
The calibrating spindles are mounted to a robust cast iron monolithic structure which practically eliminates vibrations generated when operating even during intensive work cycles. A recirculating ball screw assembly positions the diamond plate guaranteeing constant precision and performance reliability. This system also automatically raises the spindle in the event the conveyor belt shuts down preventing the diamond tool from excessively machining the workpiece, and then when restarted the spindle automatically returns to its preset machining depth.

The machining depth for each spindle is visualised on a digital display with a precision to hundredths. To guarantee such highprecision machining encoders detect and monitor the position of the spindle rather than the ball screw assembly which moves the spindle. The recirculating ball screw assembly system adopted for raising the spindle guarantees fast and precise spindle
movements without wear, unlike conventional trapezoidal screw systems which in emergency conditions only allow for controlling vertical positioning of the spindle and do not raise and lower spindle.

Dynamically balanced large diameter and dimensioned diamond tools combined with high-powered motors, ensure high-speed machining performance.
The diamond are fitted with a removable external crown that allows for quick diamond segment assembly and fitting.

High-performing honing-polishing units  
The honing-polishing units are result of a specific design which has led to achieving:
Greater rigidity and machining performance thanks to
- new design cast iron housings.
- increased motor power.
Greater reliability thanks to
- new lubrication channels in the shaft bushing.
- a new central water feeding system which flows in axis with the spindle, mounted in an elevated position preventing any build-up and deposits.
- new lifting and lowering cylinders with protected rod.
Easy maintenance thanks to
- centralised grease nipples on the front of the spindle.
- new self-adjusting thrust bearings.
- the new system for displaying consumption of abrasive material.
Greater and improved safety thanks to
- water feeding in axis with the spindle to avoid any leakage onto the internal components and external water flow deviation system in the event of overfeeding or blockage.
- sealed and protected commands.
.

High-performing honing-polishing backing plates
Each honing-polishing spindle is fitted with a special Breton new design abrasive holding plate. The pneumatic operating pressure can be adjusted utilising the two pistons provided which also raise the head in the event there is no workpiece.

These special abrasive holding plates have a 500 mm diameter, mount 8 abrasives and are fitted with an exclusive multidirectional shock absorbing system.
The entire assembly ensures perfect elasticity and a constant and optimal operating pressure resulting in a workpiece with a perfect and uniform polished finish right up to the edges, all with a minimal consumption of abrasive material.

Adjusting working width
The robust side guides which contain the workpiece to polish can be adjusted in width utilising the two manual handwheels one mounted at each end of the machine in an easily accessible position for the operator. The working width is then set utilising the keypad on the operator’s control panel.

P E R F E C T  P O L I S H E D  F I N I S H
 Fixed calibrating units and honing-polishing units mounted on mobile bridge for a perfect polished finish of any size workpiece
In all the various models of this machine the calibrating spindles are mounted to a robust cast iron monolithic structure integral to a fixed rigid bearing beam. This entire structure practically eliminates vibrations generated when operating even during intensive work cycles. The experience developed by Breton teaches us to be able guarantee a quality polished finish for any size workpiece, it is indispensable that the honingpolishing spindles are mobile and not fixed. This is why the honing-polishing units on all the models of this machine are mounted to a mobile bearing beam, designed with a special closed rectangular profile, which generates elevated moments of inertia and optimal bending and torsional rigidity.


The beam rests on two vertical structures that travel on amply dimensioned rectified and tempered roller sliding blocks enclosed in a oil bath, along cast iron bridges which house the ground and tempered travel ways.
The reciprocating movement of the beam is powered by a transmission shaft connected at each end to a rack and pinion assembly. The shaft in turn is driven by a powerful motor reducer unit mounted on the centreline and commanded by a frequency variator.

Safety protections
The Levibreton KFM machines are fitted with front sliding soundproofed safety panels of robust construction with an ABS and polyurethane sandwich structure, and are resistant to water and waste generated during machine operation. Protective rubber spray guards are fitted to the beam facing the abrasive backing plates “in line” with the workpiece to polish.

Controls and display
Analogical manometers with operating pressure regulators and the spindle cycle selector switches are positioned in correspondence to each honingpolishing unit above the front sliding protections, protected from humidity, and easily accessible to the operator.

Displays with a precision to hundredths and selector switches for vertical positioning of the spindles are mounted to the front of each calibrating group. An operator’s control panel with display is mounted to one of machine side panels.

The polishing machine for marble strips Levibreton KFM is available in 10 version:
- KFM 65/28, 
maximun workable width 650mm, 2 calibrating unit and 8 dressing units
- KFM 65/33
maximun workable width 650mm, 3 calibrating units and 3 dressing unit
- KFM 65/012,
maximun workable width 650mm, 12 dressing unit
- KFM 65/312,
maximun workable width 650mm, 2 calibrating units and 12 dressing unit
- KFM 65/014,
maximun workable width 650mm, 14 calibrating unit
- KFM 65/414,
maximun workable width 650mm, 4 calibrating units and 14 dressing unit
- KFM 100/312,
maximun workable width 1.000mm, 3 calibrating units and 12 dressing unit
- KFM 100/28,
maximun workable width 1.000mm, 2 calibrating units and 8 dressing unit
- KFM 100/012,
maximun workable width 1.000mm, 12 dressing unit
- KFM 100/014,
maximun workable width 1.000mm, 14 dressing unit.

Well, that’s all for today.
For more INFO and PRICE about Levibreton KFM write to mail@breton.it
By-by
Sergio Prior

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Levibreton KFT 3600 - Lines for polishing marble slabs

LEVIBRETON KFT 3600: A PRODUCTION PHILOSOPHY 
Nowadays, the Levibreton KFT 3600 polishing lines for marble are the best and most advanced solution for companies requiring high productions combined with low transformation costs.
Breton was the first company to develop the machines for the continuous polishing of marble slabs, revolutionizing the field.
Automation, production, user-friendliness, simple maintenance and low operating costs are absolutely familiar concepts to Breton who knew how to masterfully convey them in the tried and tested, world-famous Levibreton KFT 3600. 

HIGH-REMOVAL DRESSING/POLISHING SPINDLE UNITS
The dressing-polishing spindle units feature a sturdy cast-iron casing ensuring maximum rigidity and a consequent high removal capacity of the abrasives; under the mechanical and technological viewpoint, they are a concentration of reliability, safety and simplified maintenance.
Spindle units are lifted by a couple of pistons with constantly protected rod.
The lubrication points are centralized in front of the spindle unit in order to simplify the routine maintenance operations.
The water feeding system is positioned over the spindle units with passage along the spindle axis so as to prevent any possible build-up of residue, and an ingenious system diverts water outside the spindle casing in case of over-supply or clogging.

 
SPECIAL BRETON PLATES
Each spindle is equipped with a high-performance special Breton abrasive-holding plate with a diameter of 550mm, holding 9 abrasives, which ensure an extremely high removal capacity and work stability for a perfect and uniform polishing even up to the edges of the material.
The special Breton plates are equipped with an exclusive one-way shock-absorbing system ensuring the correct flexibility and a homogeneous and optimal working pressure.
This also results in a lower consumption of abrasives.
THE BEAM
The beam is built using a special design with box-type section in order to both contain weight and provide high rigidity.
Therefore, the spindle/beam assembly is very dynamic and enables to attain extremely rapid acceleration/deceleration ramps and a very high travel speed (up to 70 m/min). 

THE MOTORIZATION OF THE SPINDLE-HOLDING BEAM
The reciprocating movement of the beam is actuated by two motor reducers (one for the KFT 3600/08) attached at each end, mechanically synchronised and controlled by a single frequency variator.
Motion is transmitted by means of a pinion/rack system.
The beam working speed achieves 70 m/min.

THE TABLE
The table constitutes the supporting structure of the machine and is fabricated as a distortion-proof, arc welded steel, single-piece chassis.
The conveyor belt slides upon a thick steel table, milled as a single unit to assure perfect flatness.

THE BEAM SLIDING SUPPORTS
The beam rests on two shoulders moving along two sturdy, cast-iron supports, which house tempered, rectified and thick tracks with large diameter roller slides in an oil bath.
The sliding components are protected by stainless steel labyrinth seals. 

THE SLAB PROFILE AND THICKNESS READERS 
An optical reader memorizes the slab profile with 10x10 mm resolution, while a sonar reader memorizes its thickness. These two systems work without any contact with the material.
This system allows to automatically control the raising-lowering of the heads and guarantees both the self-adjustment of the spindle beam travel as to the width of the processed slabs and the automatic positioning of the frontal, anti-splash and sound-proof protection guards according to the slab thickness.
THE AUTOMATIC CONTROL OF THE ABRASIVE CONSUMPTION
Connected to both the control PC and the sonar sensor registering the thickness of each individual slab, this optional system performs the following functions:
- continuous, automatic monitoring of the abrasive consumption for each individual head, with video-messages and pre-alarm before the tool is completely consumed
- minimal raising of the heads at the entry/exit of slabs and subsequent rapid lowering guaranteeing a better polishing of the slab sides as well as a higher working speed. THE WATER PLANT
The water supply to the heads is by a common, large-diameter, PVC-made central piping, placed above the spindle units.
The water supply from the main pipe to the slabs passes vertically inside the shaft of the spindle unit.
With this system, when the machine is stopped, all the water inside the piping automatically flows out by gravity thus avoiding any possible stagnation and consequent build-up of solid residues inside the pipes. An ingenious system diverts water outside the spindle casing in case of overflowing or clogging, thus preventing excess water from coming into contact with the spindle internal components. THE ELECTRIC/ELECTRONIC PLANT
The electric/electronic plant is wired with the innovative “field-bus” technique. It is a simple, single cable delivering all the PC signals with digital transmission to the different control units installed on the machine.
With this state-of-the-art system, the signal transmission is safe and free from any interference, and the identification of possible failures is greatly simplified.
The electric plant connecting the stationary parts of the machine with the mobile beam is by a parallel sheathing system, which secures safer working conditions and a longer life of the cables.
All the electric/electronic equipment, including the PC installed on the machine, are of the commercial type and supplied by first-class world manufacturers so as to make easier both the technical assistance and the readiness of spare parts, virtually throughout the world. PROGRAMMING
The operator interface is simple and immediate, realised with a PC operating in a Windows environment, and is provided with touch-screen.
The major work processes are controlled, such as:
- speed of the machine conveyor and synchronism of the whole line, including loaders and connection roller conveyors.
- back-slipping correction on the anti-skid conveyor of badly-sawn, bent slabs, for both single slabs and packs of slabs
- beam movement (speed, customised programming of acceleration and deceleration ramps)
- continuous automatic monitoring of the abrasive consumption for each single head, with video-messages and pre-alarm before the tool is completely consumed
- possibility to “exclude” all, some or just one slab under processing, or even a portion of the slab (head, end, corner). 

TELEDIAGNOSIS 
The Levibreton KFT 3600 is equipped with evolved software the assisted Internet connection with Breton service, which facilitates remote trouble-shooting and expedites solutions.
STATISTICS
Furthermore, the PC gathers and processes the statistical data relating to the production and consumptions, such as:
- production statistics on partial periods, or on job orders, or per shifts, progressives, or accumulative (hours of machine switched on, in operation, in alarm, square meters processed, etc)
- tool wear statistics (per each individual head, square meters produced - at a given time - with the operating tool, square meters produced with the last replaced tool, etc.)
- diagnostics of machine condition, with video display of any alarm occurred;
- maintenance programming with alarm on the display when preventive maintenance has expired
- image file of the slabs processed (as they are memorised by the optical reader placed at the entrance of the machine)
Moreover, the PC control of all these data makes them readily available to other supervising or control PC, or data can be exported in “.txt” format files so as to be processed by any “office automation” application software (for instance, Word, Excel, etc.).

CONTROLS AND DISPLAY

Analogical manometers with operating pressure regulators and the spindle cycle selector switches are positioned in correspondence to each honing-polishing unit over the front sliding  protections, protected from humidity, and easily accessible to the operator.  
An operator’s control panel with display touch-screen is mounted to one of machine side panels.

SAFETY PROTECTIONS

The Levibreton KFT 3600 machines are fitted with front sliding soundproofed safety panels of robust construction with an ABS and polyurethane sandwich structure, and are resistant to water and waste generated during machine operation.
Protective rubber spray guards are fitted to the beam facing the abrasive backing plates “in line” with the workpiece to polish.

LEVIBRETON KFT 3600 comes in three versions, with 8, 14 15 and 17 spindles which are driven by a 11 kW motor each and hold plates with diameter of 550 mm; each plate holds 9 abrasive bricks for maximum removal capacity. 

The version with 17 spindles, specially designed for the most demanding production requirements, is equipped with a halfway bridge installed after the 7th spindle that "separates" the dressing from the polishing section. The dressing section is therefore stiffer, more "aggressive" and, if desired, capable of holding calibrating spindles on the first positions. A high-flow washing unit is mounted under the halfway bridge to wash out the residue of the coarse abrasive grains before slabs are processed by the finer polishing grains.
Well, that’s all for today.
For more INFO about Levibreton KFT 3600 write to mail@breton.it
By-by
Sergio Prior

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breton marble machines, breton stone machinery, levibreton KFT 3600, polishing marble lines