VBH Series
The Parmigiani VBH is a hydraulic 4-roll plate bending machine built on nearly a century of Italian forming expertise. Engineered for both cylindrical and conical bending, the VBH handles plate thicknesses from 0.05" to 12.0" and roll lengths from 1 ft. to 26 ft. — one of the widest manufacturing ranges available in any single machine line. Its mono-block full frame construction, antifriction linear guide system, and digitally controlled parallelism deliver the kind of repeatable precision that heavy fabrication demands.
What sets the VBH apart is how much capability comes standard. Where competitors charge extra for diagnostics, parallelism control, or plug-and-play wiring, every VBH ships with Parmigiani's i-Diagnostic real-time monitoring, FACILE plug-and-play electrical system, and a proportional-valve parallelism system accurate to 0.004". Add in the industry's most advanced CNC controls — upgradable at any time through the Parmigiani Open System — and the VBH is a machine built to grow with your shop.
Technical Details
Strength: Antifriction Linear Guides & Heavy-Duty Bearings
The linear guides design is the only system that can grant the necessary machine stiffness and the perfect geometry for all kind of bending operations.
The linear design allows a compact geometry of the machine ("minimum centerline distance between the two side rolls" impossible to obtain with the swinging design) that it is essential for the bending precision and accuracy.
The linear design allows to work in the best and ideal geometrical conditions when rolling high yield strength materials, reducing the shell spring back reopening effect and also allows to obtain much smaller bending diameters when compared with the swinging design.
- No friction - less than swing design
- Direct loads to the plate
- Less vertical power on top roll
- Lower bending diameter
HMB System Heavy Multiple Bearings
Each bending roll is supported by 4 heavy-duty self-aligning spherical roller bearings (double raw type).
Each bearing is oversized in order to withstand the whole bending load.
Thanks to the HMB exclusive design, with four oversized bearings fitted into a swiveling housing, the roll can freely deflects along it’s full width during the rolling process.
This guarantees an optimal distribution of the load on the supports even during the cone rolling process and increase the machine reliability and life.
Moreover, the multi bearing system with swiveling housings design greatly reduces the maintenance and the need for lubrication (permanent lubrication).
Friction free - Maintenance free
AST System Antifriction sliding technology
Each Rolls supports with machined antifriction material in sliding area.
This system drastically reduce the maintenance and the sliding friction is lower than in a planetary machine.
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