DAVI 4R bending machine

DAVI Planetary Roll: The Best in Prebending Technology

Introduction  

DAVI’s planetary roll machines are designed for optimal prebending with advanced features for ease of use and efficiency. These machines are known for their ability to produce perfect shells in a single phase, eliminating the need for complex handling and adjustments.

Key Features

Single Phase Prebending:

Efficiency: The 4-roll configuration allows for prebending in a single phase, handling one side roll position automatically with no need for plate transfer.

Automation: Automatic squaring is achieved instantly using a real hydraulic backgauge roll, eliminating the risks associated with manual squaring.

Squaring:

Automatic and Instant: The machine features an automatic, instant squaring mechanism that reduces the difficulty and risk of mismatches compared to manual methods.

Handling Devices:

No Additional Equipment Needed: The machine does not require additional tables or feeding systems, as the plate remains in a consistent, horizontal position during prebending. This feature simplifies operations and reduces the need for manual handling.

Prebending Process:

Prebending Performance: The machine’s design ensures that the plate is firmly clamped by central rolls, preventing slips and maintaining perfect control. This is especially important when changing side rolls.

Geometric Considerations:

High Precision: DAVI machines address geometric challenges such as large top rolls with high deflection and cambering requirements. The design minimizes spring back and ensures tight dimensional control.

Cones and Angles:

Advanced Cone Handling: The machine is equipped with a strong contrast die for cones, ensuring precise shaping and minimizing issues such as cone angle loss or shifting.

Advantages

Horizontal Plate Feeding:

Exclusive Option: DAVI is the only manufacturer offering a constant horizontal plate feeding option. This feature enhances stability and precision during the prebending process.

New Planetary Swing Guides:

Improved Performance: These guides allow the top roll to reach higher positions with optimal angles and auto-compensation. This results in a lower push effect and reduced deflection.

Minimum Diameter Requirement:

Enhanced Flexibility: The DAVI 4-roll machines can achieve a minimum diameter of less than the top roll diameter, accommodating a wider range of applications.

CNC and Automation

CNC Integration:

Advanced Control Systems: DAVI machines can be equipped with various NC, CNC, and DNC systems, including options from SIEMENS and HEIDENHAIN. This ensures high-quality control and adaptability to different budgets and applications.

Programmable Features:

Ease of Use: Automatic-instant squaring allows for safe and programmable starts. The control system supports running various shapes such as shells, ovals, and squares with high precision.

High-Tech Quality:

Top Brands: DAVI uses reliable brands such as SIEMENS, ABB, and RITTAL for motors, encoders, and consoles, ensuring top-notch quality and service.

Specifications

Models and Sizes:

4 Roll Machines: Examples include models with dimensions such as 3050 x 90, 3050 x 16, and 6100 x 13. These models vary in capacity and are designed for specific applications and thicknesses.