Berthiez RVU Serie

Macchine verticali di rettifica

Berthiez RVU - Precise grinding

The RVU grinding machines set new standards in high-precision machining and are especially suitable for high precision grinding applications in the bearing and aerospace industries. The range can be equipped with up to four water-cooled grinding spindles which can achieve a performance of 45 kW at 18,000 rev/min. (according to the type of grinding wheel selected)

The RVU facilitates a complete machining processing without interruption as optional dressing units, grinding wheel changers and workpiece measurement are available. Additional options for hard metal machining boring and workpiece measurement increase the possible applications of the machine series considerably.

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Optimized structure

The optimized structure of the machine components guarantees ergonomically operation. Continuous process monitoring is also provided. The optional complementary equipment offers a global machining solution by integrating hard turning, boring and parts measurement.

Grinding

Hard turning

Boring

Equipment

The machine is equipped with one to four water cooled spindles with power of 45 kW and a speed being able to go up to 18,000 rpm (according to the type of grinding wheels used).

The design ensures a complete machining process without interruption integrating options of dressing devices, wheel changer, part probe, hard turning, etc.

Options

Spindles → Additional grinding spindles
Wheel-changer → 6 to 8 wheels + covers and nozzles
Dressing → Fixed point or disk dresser | Tilt or radius dresser | Continuous dressing device
Turning → Hard turning
C-axis → Positioning, cam machining, etc
Coolant → Permanent filter or paper filtering unit
Process → Wheel / Part contact | Process monitoring | Conventional | Automatic or semi-automatic dynamic balancing | Part measuring
Control → CNC Siemens 840D sl

Accessoires

Design features

Hydraulic compensation system for counterbalance of the head
Large-dimension ball screws
Main drive via torque motor
User-friendly operator assistance guide
Automatic wheel balancing
Machine under temperature control

Accessories

Additional grinding spindles
Fixed or tilting dressing device, disk or diamond roller
Cooling device: grinding wheel cleaning,
emulsion, filter device, mist extraction
Component measuring via stylus or laser
Coolant pressure 150 bar

Extensions

Indexing headstock –5° +275°
Automatic exchange of grinding wheels, capacity: 6 – 8 wheels
Hard turning
C-axis: cam grinding
Conversational programming via operator
Different dressing devices