Features
MAV – VARIABLE GEOMETRY PRESS-ROLL
RANGE
For plate thickness from 80-100mm (3-4 inches) and above, it’s the best solution for very heavy duty applications in materials with medium to high yields and ultimate tensile strength. It’s been designed with many advancements and exclusive benefits.
PRESS-ROLL DESIGN As in a press brake, the MAV’s top roll moves in an up and down direction while the two side rolls move in and out, changing the bed width, like the bed of a brake. Very easy to operate.”
“The plate is fed by the rotation of the rolls and as it is fed through around the top roll, the necessary diameter is achieved.”
VARIABLE GEOMETRY The “”variable”” geometry of the MAV allows the operator to move each side roll in and out independently to optimize the best “”leverage”” for any application. Unlike other “”fixed”” side roll three roll machines, the side roll can be positioned to minimize the flat end, thus allowing the MAV to have the shortest flat end possible.
By moving the side rolls away from the top roll as far as possible, the bed can increased to roll the thickest plate in the industry. All three rolls can be tilted and moved independently for a large angle during cone rolling.
DAVI EXCLUSIVE BENEFITS
SERVO-TRONIC The patented, state-of-the-art Servo-Tronic synchronized roll parallel control uses hydraulic and electronic systems simultaneously for the most accurate parallel system on the market over the rolls using just hydraulic, mechanical (torsion bar) or electronic systems.
DAVI TECHNOLOGY Davi uses only the most state-of-the-art technology, integrating digital Roll by Wire, permanent lubrication and dual Servo-tronic parallel system allowing for ease of operation to produce quality parts accurately and reliably and ensuring the most maintenance-free plate roll on the market today.
THE BENEFITS OF THE MAV VARIABLE AXIS PLATE ROLL
“”BUILT-IN”” POWERED ROLLS
The MAV is the only plate roll of this kind with three independently powered rolls, mounted directly to each roll shaft to offer the market’s most powerful torque transmission available. Standard feature on other brands offer only the top roll powered, with brakes for the idle side rolls making thin, narrow or large diameter cylinders hard to feed properly. Optional auxiliary motors can be offered on request, but these are small and with not much power.
THREE HYDRAULIC MOTORS The Davi MAV uses three independent hydraulic motors and three gearboxes splined directly to each powered roll nearly eliminating the possibility of the plate slipping and ensuring excellent plate movement through the rolls. On larger capacity machines, incorporated into the top roll is the Davi “”Multi-Motor, using three or four hydraulic motors to power the main gear drive. This allows the machine to continue to produce during maintenance on one of the motors, avoiding costly down time.
ACCURATE FEEDING Unlike other brands using brake linings that wear out, Davi incorporates the safety of automatic and hydraulic assisted braking for all three powered rolls to ensure accurate plate feeding.”
EXCLUSIVE TOP ROLL TILTING In cone rolling applications, the Davi MAV uses an exclusive self-aligning and tilting top roll housing (vs. the rigid housing of machines on other brands), which tilts the top roll up more than 100mm (4 inches) allowing larger angles on heavy cones quickly and accurately. Other plate roll manufacturers, usually, can only tilt the side rolls 50 mm (2 inches) and the top roll only 10-20mm (1/2 to 3/4″”), dangerously pressing on its shaft, due to the rigid housing.
