Levibreton KFM Slab/Strip Calibrating and Polishing Machine

LEVIBRETON KFM



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

Parameters	Unit	KFM 65/28	KFM 65/33	KFM 65/012	KFM 65/312	KFM 65/014
Slabs max. processable thickness	mm	70	70	70	70	70
Bridge travel power	kW	4	Fixed honing units	4	4	4
Diameter of abrasive-holding plates	mm	500	750	500	500	500
Conveyor system forward speed	mm/min	400÷6.900	400÷6.900	400÷6.900	400÷6.900	400÷6.900
Polishing plates diameter	mm	690	690	-	690	-
Approx. Weight	Kg	12800	9000	12000	15800	12800
Cooling water requirement	l/min	300	240	300	420	340
Belt advancement motor power	kW	1.5	1.5	1.5	1.5	1.5
Number of polishing heads/honing units	nr	2	3	-	3	-
Slabs max. processable width	mm	650	650	650	650	650
Polishing heads/honing units motor power	kW	22	22	-	22	-
Number of Dressing spindles	nr	8	3	12	12	14
Machine overall length	mm	9100	7580	9720	12000	10300
Power of each dressing unit	kW	11	11	11	11	11
Sound pressure level	dbA	76	76	76	76	76
Machine overall height	mm	2250	2400	2250	2250	2250
Machine overall width	mm	2250	2200	2000	2250	2250
Number of abrasives for each plate	nr	8	20	8	8	8