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The machine comprises a one piece electrowelded bench with a ground surface incorporating special interchangeable wear-resistant stainless steel plates which ensure a perfect level surface over time.
Over the bench runs a special conveyor belt which has been stiffened to avoid jerking movements. The belt is driven by means of a motor reduction unit linked to an inverter and its speed is accurately monitored by an encoder mounted on the idle roller.
The spindle groups are housed in the centre of the spindle bridge (a large electrowelded steel structure) so as to ensure maximum stability.
Inside the spindle groups are chromed sleeves for the vertical movement of the abrasive heads.
The bridge rests, by means of a hinge, on sliding blocks which move on ground rollerways lubricated in an oil bath and are sealed by stainless steel labyrinths. An intermediate support has also been added so as to eliminate any bending of the bridge.
This is also oil-bath lubricated with stainless steel labyrinths.
The group is powered by a motor reduction unit, the speed of which is regulated by an inverter.
The racks and pinions have sloping teeth in order to ensure the smooth running of the machine. The vertical movement of the polishing heads is performed by a pair of pneumatic cylinders working in counter pressure.
The polishing heads are separated from one another by a metal diaphragm complete with a rubber strip which stops grains of abrasive from the previous heads from cutting the polished surface.
The machine has single doors in stainless steel so as to be able to change the abrasives one by one.
The polishing machine may be equipped with a centralised automatic lubrication system which can be programmed so that all the parts are correctly lubricated.
Machine parts:
- N° 1 one piece steel structure with ground surface, complete with interchangeable, wear-resistant steel plates .
- N° 1 conveyor belt suitable for speeds from 0 to 600 cm/min.
- N° 20 calibrating spindles equipped with GASPARI heads with oscillating arms for the abrasives, each with a 15 HP motor; the heads are 450 mm in diameter and are equipped with counter pressure.
- The up and down movement of the bridge and the work pressure are guaranteed by a pair of pneumatic cylinders.
- Each polishing head is equipped with a pneumatic pressure adjuster.
- The speed of the bridge is regulated by means of a remote control located on the front of the machine.
- All the control buttons for the motors are located in a waterproof structure fixed to the top of the machine to ensure better maintenance and operation
- Each head has its own separate door so it is possible to stop only the head/s needing a change of abrasive.
- Each head has stiff bulkheads which allow the operator, once the head movement has been stopped, to replace the abrasive without danger, according to safety regulations.
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| Modello/Model | | PGM600/20 | | Larghezza utile di lavoro / Working width | (cm) | 30/65 | | Spessore max lavorabile / Max. thickness of strips | (cm) | 7 | | Spessore min. lavorabile / Min thickness of strips | (cm) | 1 | | Nr. Teste operatrici / No of polishing heads | (N°) | 20 | | Potenza testa operatrice / Polishing head power | (Kw) | 11 | | Potenza traslazione ponte porta-mandrini / Spindle bridge traverse motor power | (Kw) | 4 | | Potenza nastro trasportatore / Belt motor power | (Kw) | 2,2 | | Velocità traslazione trave porta-mandrini / Spindle bridge traverse speed | (cm/min) | 0/1500 | | Velocità avanzamento nastro / Belt speed | (cm/min) | 0/600 | | Potenza totale installata / Total installed power | (Kw) | 226.2 | | Fabbisogno idrico / Water consumption | (l/min) | 500 | | Aria necessaria / Air consumption | (l/min) | 500 |
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