Edge Polishing Machines...
 LF 12 T
Edge-polishing machine
The automatic edge polishing machine LF12T has been specially designed for the continuous production of straight, gauged, regular bull-nose, bevels and grooves.
The conformation and polishing is carried out in one single automatic operation managed by the PLC, by placing the material on a conveyor belt and going through a sequence of gauging, pre-shaping, polishing, beveling and cutting spindles.
 
• Generator spindle motor power 2,2 kW/3 HP
• Polishing spindles motor power 1,5 kW/2 HP
• Beveling spindles motor power 1,5 kW/2 HP
• Cutting spindle motor power 4 kW/5,5 HP
• Belt motor power 1,1 kW/1,5 HP
• Belt speed 0-1,5 m/min



Pre-shaping spindles

Pre-shaping of the bull-nose and other round forms (half bull-nose, pencil round etc.) are carried out by two diamond wheels, mounted at 45°, with direct transmission, pressurized and positioning with manual blockage.


Polishing spindles
A group of a flat diamond wheel, with automatic positioning and pneumatic blockage, and seven spindles with pneumatic work pressure carry out shaping and polishing of bull-nose and other round forms (half bull-nose, pencil round etc.).

Beveling spindles
For pieces that require beveling superior and inferior sections, there are two spindles with direct drive, pneumatic work pressure, and pressurized to avoid water and dust entrance.

Structure
On an electro-welded steel structure with grinded support plane runs the synthetic conveyor belt with a guide that avoids the lateral displacement, driven by a motorreducer with an electronic speed control. The material is transported by polyurethane rollers with stainless steel axes and, for big dimension pieces, there's a mobile bar with plastic wheels and entrance-exit benches with acetyl resin wheels and stainless steel axes. The structure has a
material-support system with motorized anti-slip rollers.


Cutting spindle
For making grooves on the inferior, superior or on the edge of the material, there is a spindle for mounting a diamond disk with manual vertical, horizontal and angular motions.

Calibrating spindle
For grinding and gauging the thickness of the edge with a diamond cup wheel. Can also shape different forms. It has vertical, horizontal and angular manual adjustments.


Agile and speedy
Maximum geometric precision
Simple and easy of operating

Command panel
With the incorporation of a potent PLC the complete polishing cycle can be controlled with the possibility to modify the entrance and exit points of the spindles for an optimum finish for the ends of the piece, the material offset for polishing and other variables. The operation and preparation are very simple and are done in very short periods of time. There is also an alarm window and on-line help.

On the upper part of the machine, there is a regulator for the pneumatic work pressure of each spindle.
The general command center is mounted on an arm for comfortable work positioning and has a touch screen, where you can select the operation way, the different preset forms and production data.


Gauging spindle 1
Pre-shaping spindles 45º 2
Generator spindle 1
Polishing spindles 7
Beveling spindles 2
Cutting spindle 1
Gauging spindle motor power 4 kW/5,5 HP
Pre shaping spindle 45º motor power 2,2 kW/3 HP
Net weight 5600 Kg
Overall dimensions 32' x 8' 9'' x 8'
   
 LFT 32
 Edge polisher for flat edges and bullnoses

Specially developed for the generation and the polish of flat edges and bullnoses.
Main characteristic is the executing of the work with a single head doing without of form tool, since it generates the different profiles with a single diamond flat tool. After the generation it polish one with the use of normally abrasives or diamond sandpaper.
Built on an electrowelded monoblock structure of steel. The plane of work of high thickness is rectified and it has a lining in nonskid rubber.
 
• 3 HP (2.2 kW) motor
• Maximum workable edge thickness up to 4 3/4"
• Maximum workable length 126"
• Programmable logical controller for predefined and personalized work programs
• Main tool unit's movements operated by levers and gearbox
• None hydraulic parts
• Six pneumatic presses for material clamping

Operation
The operation of the machine is facilitated with the adoption of a PLC and an operator panel with potent software with predefined work programs for the most usual forms, being able to in all moment to generate personalized programs.
The electric and electronic equipment contemplates norms of security and protection, including the use of a photoelectric barrier that prevents the intrusion in the work area.

Equipment
The basic equipment of the machine includes five cylinders and rules for the blockade of the material to elaborate, revolvable pneumatic cylinder to facilitate the positioning of the material and solenoid valve for the refrigeration water. The lubrication of the essential parts of the machine is automatic and programmable.

The head
The head moves on lineal guides with recycling balls by means of a motor with variable speed with an inverter and in the vertical sense on chromed guides with brass sleeves by means of a motoreducer
The particular system of orientation of the head by means of levers with a box of oversized gears with a motoreducer with variable speed by inverter.Is accurate and soft in its operation and extremely robust with relationship to the traditional systems by circular sector and gear.

The spindle motor
The spindle motor has been specially developed as a compact, slight and potent unit with hollow axis for the passage of the refrigeration water.
The work pressure is pneumatic and compensated automatically in relationship with the angle of operation of the spindle.


Agile and speedy
Maximum geometric precision
Simple and easy of operating

Command panel
Mounted on an orientable arm for operator comfort.
It contains all the electric commands and the operator interactive panel.

Spindle
A single spindle carries out the generation work and polish of the profiles at high speed with a single set of tools for all the profiles.
Spindle 1 Unit
Spindle power 4 HP
Advance motor power 3HP
Turn motor power 0.5HP
Maximum displacement of Spindle 10,25'
Abrasive diameter 4" to 5"
Maximum thickness 5"
Net weight 8300 pounds
Dimensions 17'x 6,4'x 6,4'
 

 

 LF 11
 Flat edges continuous polishing machine
Basically, the LF11 edge polisher has been developed for the polishing of either marble or granite straight edges by means of a nimble and simple process. LF11 features: an electrically welded steel monoblock structure with a rectified supporting plane for the conveyor belt.
Conveyor belt made of man-made material, is powered by a variable speed motoreducer through a frequency converter.
A wheeled mobile rod can support very large plates. Vise for plates with a nonslip rollers, and a motorized positioning.
Plate guide polyurethane rollers the axles of which are protected with a hars chrome. Entrance and exit tables. Table wheels made of acetal resin and stainless steel axles.
 
• Maximum workable edge thickness up to 2 3/4"
• Seven polishing heads and four chamfering heads
• 1.5 HP (1.1 kW) motor with pneumatic work pressure
• 5.5 HP (4 kW) gauge head motor
• 1 HP (0.73 kW) variable speed conveyor belt.
• Wheeled mobile bar for work bench extension.
• Tables for materials entrance and exit

Gauging,

polishing,

bevelling


and molding

are performed by means of a sole operation

Command panel
A centralized, easily accesible command panel allows operating heads to be selected and working pressure to be selected for each head separately.

Heads
Gauge head for a 200 mm diameter diamond studded grinder with vertical, horizontal and angular manual movements.
Seven heads for edge polishing with 130 mm diameter abrasives equipped with a pneumatic sliding device.
Four beveling heads for a 45 º bevelling process, two heads are in a lower position, and another two heads are in a higher position. Heads have been designed for 130 mm diameter abrasives equipped with a pneumatic sliding device. Sand and phosphate treated with a two component epoxy enamel and polyurethane enamel finishing.
Gauging Unit 1
Polishing units 7
Bevelling units 4
Gauging unit power 5.5 HP
Polishing units power 1.5 HP
Bevelling units power 1.5 HP
Belt motor power 1 HP
Belt speed 0-1.5 m/min
Overall dimensions 5020 mm x 1700 mm x 2100 mm
Net weight 3700 kg
 
Dimensions, descriptions, photographs and technical data are indicative and may be subject to futher changes without previous notice.
 
 
 
 

COCH S.A.
Ruta Panamericana Km. 31
B1618FBN • El Talar
Buenos Aires • Argentina
Phone (54-11) 4726-7878
Fax (54-11) 4726-9491
coch@coch.com.ar
 
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LF 12 T
LFT 32
LF 11