Skip to content

Reverse Curve Bending Machine

Reverse curve bending, commonly known as the S-curve, represents a transformative approach to metal fabrication. In this method, the radius center dynamically shifts from one side of the component to the other, offering unparalleled design flexibility.

S-Curve Rolling Machine
S-Curve Rolling Machine

PBA-500F S-Curve Rolling Machine

PBA-500F aluminum bending machine is suitable for bending profiles with different cross-sections. The equipment has 4 sets of rollers with photoelectric positioning. Through the rollers that match the profile section, the position of the rollers is automatically adjusted using the principle of three points forming a circle, forming 2 Three kinds of rolling and bending combinations (forward bending combination and reverse bending combination).

When combined in the forward direction, the PBA-500F profile bending machine has all the functions of a three-axis roll bending machine, and can be formed into the required radius and shape at one time or multiple times;
When the two methods are used in combination, the profile can be bent into an S shape (reverse bending) in one feed and processed to reach the set bending radius (the curvature can be changed).

Reverse Curve Bending With Freeform Bending Machine

PFB Reverse Curve Bending Machine

In the realm of metal fabrication, the Freeform Bending Machine emerges as a masterful tool for executing Reverse Curve Bending, also known as the S-Curve. This innovative machine transforms the way we approach metal shaping, providing unparalleled strength and flexibility.

Traditionally, Reverse Curve Bending involves changing the radius center from one side of a part to the other. The Freeform Bending Machine takes this a step further by seamlessly executing complex curves and bends, allowing for the creation of intricate and dynamic metal structures.

Unlike conventional methods, where a few feet of straight space between curves is considered ideal, the Freeform Bending Machine defies such limitations. It excels in bending metal sections without the need for straight intervals, ensuring the production of singular, robust metal pieces. This eliminates the complexities associated with welding multiple sections together, streamlining the fabrication process.

PBS S-Curve Rolling Machine

PBS Reverse Bending Machine

PBS reverse bending machine is a profile bending machine capable of reverse bending various materials such as aluminum extrusions, tube and pipe sections, and mirror frames.

Reverse bending involves creating bends that fold back upon themselves, resulting in a shape that resembles an “S” curve. This can be a complex process, but there are machines designed for bending metal materials, including aluminum, into various shapes.
For such specific applications, you might need to look into custom or specialized reverse bending machines, as standard bending machines might not offer the versatility and precision required for mirror frames and intricate extrusions.

Top 4 Features of S-Curve Rolling Machine

  • Strength in Simplicity – the Straight Between the Curves: Ideally, a few feet of straight line between the two curves enhances the effectiveness of reverse curve bending. However, even without this straight segment, certain steel sections can be successfully bent. This distinctive feature allows for the creation of a singular, robust metal piece, eliminating the need for welding multiple sections together.
  • Welding Woes and the Promise of Seamless Strength: Traditional methods often involve bending multiple pieces to meet project requirements, followed by welding these segments. Unfortunately, this process can compromise the quality of the final product and incur additional expenses. Reverse curve bending eliminates the need for welds or splices, ensuring the creation of a stronger, single-piece bent metal without sacrificing quality.
  • Aesthetic Marvels – Beyond Functionality: Reverse curve bending not only enhances structural integrity but also opens doors to aesthetically pleasing designs. Applications range from roof structures, canopies, and trusses to purely visual endeavors such as metallic art. This bending technique allows for the creation of structures that are not only mechanically sound but also visually captivating.
  • Streamlining Production, Enhancing Durability: One of the significant advantages of reverse curve bending machines is their ability to create continuous curves in metal components without the need for welding. This simplifies the manufacturing process, reduces the chances of defects, and lowers production costs. Additionally, the absence of welds contributes to overall structural quality and durability, eliminating potential weak points.


In conclusion, the application of reverse curve bending machines marks a revolutionary shift in the realm of metal fabrication. By breaking away from traditional bending methods, these machines offer unprecedented design possibilities and produce more robust, creatively inspired metal structures. Bridging the worlds of architecture, art, and industry, reverse curve bending meets diverse needs while ushering in a new era of efficiency and innovation. With its seamless strength and aesthetic appeal, this bending technique proves to be a game-changer in the ever-evolving landscape of metalworking.