Aluminum Bending Machine

For cold bending aluminum profiles (extrusions), there are two popular types of bending machines: roll bending and stretch forming. In contrast, press bending and fluid cell presses are less common.

Regarding aluminum profile bending, aluminum alloy is lightweight and highly malleable, allowing it to form complex shapes. As a result, this reduces assembly time and costs while producing parts quickly. Additionally, the most common bent aluminum parts are structural components. Compared to welded parts, bent structural parts are more aesthetically pleasing and offer greater strength.

The most commonly referred to aluminum bending machine is the three-roll aluminum profile roll bending machine. This machine is favored due to its wide range of applications.

Aluminum bending machines also named: Profile Bending Machine, Aluminium Profile Bending Machine, Aluminium Extrusion Bending Machine, Aluminum Pipe Bending Machine, and Aluminium Bender Machine.

The operational principle of the 3-roll variable geometry aluminum bending machine involves all three rolls being capable of movement. During the rolling process, the top roll applies pressure to the aluminum profile between the two bottom rolls.

A common aluminum profile bending machine is a 3-roll variable geometry bending roll. By reducing the distance between the bottom rolls and pressing the top roll on the initial part of the aluminum profiles, it is possible to minimize the unbendable straight section.

The technological innovations, accuracy, speed, and excellent bending performance of the PBA aluminum bending machine make it stand out in aluminum profile bending applications.

Note: In the video, prepainted aluminum extrusions are roll-bent using the PBA profile bending machine without leaving any marks on the surface.

The aluminum profile bending machine employs simple, flexible, and efficient bending technology. This provides a reliable solution for bending various non-standard metal profiles and processing aluminum alloy profiles.

It finds application in fields such as architectural doors and windows, curtain walls, decoration, the automotive industry, aerospace, rail transit, elevators, bathroom fixtures, shipbuilding, tunnels, bridges, and lighting.

PBA series aluminum roll bending machines offer versatility and precision, delivering exceptional craftsmanship to meet diverse market demands. For instance, with DXF and STEP import capabilities, once designed, the workpiece can be easily reproduced, ensuring seamless curves and intricate designs for various applications.

CURVATURE ACCURACY

With digital technology, any curvature can be achieved. However, the accuracy of bending aluminum profiles is affected by springback.

Therefore, the focus is on solving springback to achieve precise and consistent workpiece dimensions.

In mass production, the key is to quickly resolve springback with the simplest operation.

PBA’s unique CNC operating system addresses springback in two steps: input the actual radius to get the coefficient, then input the compensation coefficient and start production.

Note: Springback refers to a material’s tendency to return to its original shape after being bent. It attempts to revert to its original shape at a certain angle.

REPEATABILITY

When scaling up aluminum profile bending production, it is crucial that thousands of parts of the same design maintain consistent dimensions from month to month.

Typically, the expectation for aluminum bending is that production should provide interchangeable parts from batch to batch.

PBA’s aluminum bending machines utilize a combination of motion controllers and servo motors to ensure precise repeatability of aluminum bending workpieces, with a repeat position accuracy of ≤0.01mm.

Notes: In contrast, if driven by hydraulic cylinders, repeat positioning speed and accuracy (≤0.02mm) can be easily affected by temperature.

CROSS SECTIONAL DEVIATION

When aluminum profiles are bent, the inner radius undergoes compression, while the outer side experiences tension. As a result, the metal flows in a specific way under constant yield conditions into certain unconstrained areas, causing cross-sectional deviation.

To prevent deformation (cross-sectional deviation) caused by stress, especially with asymmetrical profiles, custom internal support tools are crucial. Therefore, a reliable expert is needed to design these tools.

The perfect aluminum profile bending workpiece should be free from deformations or surface defects. In summary, not every manufacturer can provide a flawless tooling solution. Distortions, scratches, wrinkles, and cracks are unacceptable to customers.

Now, you can access top-notch service from BIT’s engineers, who bring over 20 years of unrivaled experience in aluminum profile bending tool design.

• Full Servo Drive: Repeat Position Precision ≤0.01mm. Even the most complex profiles can be bent precisely and consistently, resulting in workpieces with tight tolerances and perfect.
• DXF, STEP Import: Once Designed in Soft, The Bending Process Can Be Auto-Created.
• Quick Solution To Springback: Only Two Steps To Solve the Problem, The Workpiece Can Be Reproduced At Any Time.
• Any Curvature: 3D Simulation (C, U, S, Parabola, Archimedean Spiral, Asymmetric Variable Curvature Arc), Synchronous Display Of The Aluminium Bending Process.
• Simple Operation: Operating the machine is a breeze – it’s as simple to use as an iPhone. The true industrial-grade CNC control system saves you valuable time, enhances productivity, and reduces downtime.
• Free Tool Design Services: A great machine should include BIT’s carefully designed aluminum bending tools. This ensures perfect bending of aluminum, meeting various market needs while saving time and costs.