On January 14, 2026, the Ministry of Enterprise and Made in Italy officially granted patent no. 102024000000804 for industrial invention, filed on January 17, 2024, relating to: “Bending press with active crowning system and bending process with active crowning system.”
This recognition certifies the technological value of the solution developed internally by our team.
The critical issue in bending: compensating for deflection intelligently
During the bending cycle, the lower crossbar and the machine structure are subject to elastic deformation.
Suboptimal compensation can result in:
- angle variations along the bend line
- deviations from the required tolerances
- reworking and scrap
- increased set-up times
The purpose of crowning is to compensate for these deformations. However, in traditional adaptive systems, energy adjustment is performed by proportional distribution valves, with inevitable energy losses and delayed response times.
Gasparini adaptive hybrid crowning
The patented solution introduces a completely redesigned architecture.
The system eliminates proportional distribution and energy regulation valves, replacing them with direct control based on:
- variable speed brushless motor
- reversible pump
- direct feed to the crowning cylinders
The cylinders are fed directly by the oil supplied by the pump.
The brushless motor dynamically adjusts its speed to generate the flow needed to compensate for the lower crosshead in real time.
The flow from the pump to the cylinders is bidirectional and pressure regulation takes place:
- in real time
- without downtime
- with high precision in force modulation
The result is an active crowning system capable of reacting quickly to load variations, maintaining uniform force distribution along the entire useful bending length.
The advantages of adaptive hybrid crowning
Compared to adaptive and adaptive plus crowning systems, the Gasparini solution offers concrete and measurable advantages.
- Greater energy efficiency – The elimination of proportional valves reduces energy losses associated with oil regulation. The system only works when necessary, avoiding unnecessary dispersion and overpressure.
- Lower electricity consumption – The variable speed brushless motor only delivers the energy required by the actual compensation cycle.
- Superior reliability – With fewer valves (limited to safety functions), the system has fewer components subject to wear, less chance of failure, and greater stability over time.
- Reduction in unexpected events and maintenance – A simpler structure means fewer corrective interventions and greater production continuity.
- Reduced installed power – Compared to traditional adaptive crowning, the power required is lower, as the system does not generate constant overpressure but is activated only when needed.
- Less aging of hydraulic oil – The reduction in stress and energy loss helps preserve the characteristics of the oil over time.
Precision and control in the press brake
From an application standpoint, the adaptive hybrid bending system allows for:
- greater uniformity in the bending angle
- better repeatability between successive cycles
- reduced adjustment times
- greater stability when working with long lengths
In a production context where bending quality directly affects the competitiveness of the company, being able to rely on an advanced compensation system means improving the entire process.
A patent that strengthens Gasparini's research
Official recognition by the UIBM certifies the industrial value of the solution developed.
This patent represents:
- protection of intellectual property
- confirmation of internal technical know-how
- a concrete step in the evolution of Gasparini press brakes
Adaptive hybrid crowning is not an incremental update, but a profound revision of the compensation architecture, with direct benefits in terms of efficiency, precision, and reliability.
