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Glide Forming Technology

The Glide Forming technology is an advanced forming process capable of shaping long and narrow parts, ensuring full-thickness forming without the appearance of wrinkles, a common issue with current technologies. The process is continuous, heating and forming only a small portion of the part at any given time. This allows for the correct flat development corresponding to the part being formed.

The Glide Forming process is mainly used for manufacturing stringers and other composite material components, such as those used in the aerospace industry.

This innovative process is based on four key elements:

  • Tool: A CFRP (carbon fiber reinforced polymer) mold that does not require heating. The same mold can be used for both forming and curing the part.

  • Heating blankets: These blankets heat the laminate, creating a smooth transition from flat to formed.

  • Forming effector: Provides the necessary pressure distribution to shape the part to the mold, while simultaneously applying biaxial tension to the laminate to prevent the formation of wrinkles.

  • Steering and guiding elements: These are responsible for ensuring the correct position and orientation of the laminate relative to the mold at every stage of the forming process. They keep the laminate flat and properly aligned throughout the process.

GEOMETRICAL CONDITIONS FOR WRINKLE FREE FORMING

Across the part
1
Across the part

Book end effect: Z-Folding

GLIDE forming uses Z-folding to reduce compression and prevent wrinkles, enhancing the sliding of layers. This process creates the Book-End effect at the edges of the part.

Learn more about Book end effect.

Along the part
2
Along the part

Right Development of the final shape

For complex, contoured geometries in aerospace structures, the unfolded part is not a simple projection of the final shape. Calculating the correct developable proportion ensures the flat charge is designed accurately, avoiding defects or excess material when the part reaches its final form.

Learn how GF applies this principle.

Double curvature cases
3
Double curvature cases

Non-developable contours need in plane deformation

For the portion of the curvature that is complex and not developable, in-plane deformation must be promoted through tension. This tension is applied by the flexible nozzle, utilizing friction between the blankets and the charge, and can be adjusted through pressure applied by the forming bladder or additional actuation, depending on the part's shape.


Learn more about how GF addresses this principle

ADVANTAGES OF GLIDE FORMING

The Glide Forming process offers several significant advantages over traditional manufacturing methods. Its ability to handle complex geometries, reduce energy costs, and ensure part quality makes it an ideal choice for aerospace applications. Below are the key benefits that set Glide Forming apart from other forming technologies:

 

Superior Part Quality

Glide Forming ensures wrinkle-free parts with the highest quality standards, even in complex geometries like those with large or double curvatures. Current pressing technologies often result in wrinkles, requiring manual manufacturing for complex stringers.

Installation Versatility

A single Glide Forming machine can produce all types of stringers, regardless of their geometry, by simply changing the mold. This versatility makes the system adaptable to a wide range of aircraft components.

Energy and Cost Savings

Glide Forming does not require mold heating, which significantly saves energy, costs, and time. Unlike pressing processes that require both the mold and laminate to be heated and maintained throughout, Glide Forming only heats a few meters of laminate during the forming process.

Capability for Complex Geometries

Glide Forming can produce all kinds of stringers, including those with high curvature and non-developable geometries that are otherwise impossible to manufacture with conventional technologies. Previously, such parts could only be made manually.

 

Full Process Automation

Glide Forming does not require mold heating, which significantly saves energy, costs, and time. Unlike pressing processes that require both the mold and laminate to be heated and maintained throughout, Glide Forming only heats a few meters of laminate during the forming process.

PART QUALITY AND TYPES OF SHAPES CREATED WITH GLIDE FORMING

Taking advantage of the versatility of the technology, by simply changing the mold in the same machine, any of the conventional parts can be manufactured, as shown below, always ensuring that the process does not generate wrinkles under any circumstances. This flexibility allows adaptation to different designs and requirements without compromising the quality of the forming.

PART QUALITY

Hundreds of meters have been sectioned and micrographied, demonstrating the exceptional quality and consistency of the parts produced through Glide Forming. This rigorous analysis ensures that each piece meets the highest standards required for aerospace applications.

L Forming (for T Stringers)

We manufacture Transversal Section L stringers for T-Wing applications with a thickness ranging from 4 to 10 mm. These parts are integral to the complex structures of commercial wings, such as those used in the B777X Wing. The stringers include different configurations, such as positive and negative curvatures, run outs, and lengths greater than 30 meters. Both fabric and tape lay-ups are possible, providing versatility for various aerospace needs.

Omega stringer (for fuselage)

We manufacture Omega sections with a thickness ranging from 2 to 5 mm. Some examples of Omega sections we have produced include those for the A350 (Section 19), the B787 rear section, and the C-Series front section.

Thick Hat

We manufacture Large Thick Hat Transversal Cap Sections with a thickness of 12 mm. These parts are used in slightly contoured structures, providing the strength and stability required for demanding aerospace applications.

Glide Forming is a revolutionary process for manufacturing aircraft components, offering superior quality and efficiency

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