For years, articulating roller forming has provided manufacturers with an efficient way to create grooves, lips, flares, and other formed features on round and cylindrical parts. The process delivers consistent 360-degree contact while applying less force to the part than many traditional press or crimping operations.

As manufacturers continue to push the limits of material strength, part complexity, and process control, some applications require more than a traditional pneumatic system can provide.

To address these evolving requirements, Orbitform developed the Servo Articulating Roller Head, bringing higher precision, flexibility, and control of servo technology to articulating roller forming.

Why Servo?

Across the manufacturing industry, servo-driven equipment has become increasingly common as manufacturers seek greater precision, repeatability, and process flexibility. As manufacturers increasingly requested servo-driven solutions for improved process control and repeatability, Orbitform recognized an opportunity to bring those same benefits to articulating roller forming.

Development of the Servo Articulating Roller Head began as part of Orbitform's ongoing effort to expand the capabilities of its roller forming platform while maintaining the advantages that have made articulating roller forming a proven manufacturing process for decades.

Rather than relying on pneumatic actuation, the system utilizes servo control across three independent axes:

• Spindle rotation

• Thrust movement

• Roller articulation

Because each axis is independently programmable, manufacturers gain precise control over the entire forming cycle, from how the rollers engage the part to the final formed position.

Designed for Greater Control

Traditional pneumatic articulating roller heads follow a fixed forming path. The rollers advance, form the workpiece, and retract. For many applications, this remains an effective and economical solution.

Servo control introduces the ability to create programmable forming paths.

Because spindle rotation, thrust, and articulation are independently controlled, the forming sequence itself can be tailored to the application. The head can simultaneously control advancement, articulation, and spindle rotation throughout the cycle, allowing manufacturers to create more complex forming profiles and multi-stage operations.

Potential applications include:

• Tapered profiles

• Angled grooves

• Multi-stage forming operations

• Groove and lip forming within a single cycle

• Stationary crimping operations

• Complex geometries requiring non-linear forming paths

By making the forming path programmable, engineers gain additional flexibility when developing new products and evaluating alternative manufacturing methods.

The ability to form more demanding materials is only part of the story. Servo control also changes how the forming process itself can be executed, opening the door to part geometries and forming sequences that are difficult or impossible to achieve with a fixed-path system.

Industry-Exclusive Thru-Spindle Pressure Pad

While servo control provides greater flexibility and precision, the Servo Articulating Roller Head also incorporates one of Orbitform's most valuable roller forming technologies: the industry-exclusive Thru-Spindle Pressure Pad.

Installed directly through the center of the spindle, the pressure pad applies a preload force to the assembly before and during the forming cycle. This helps maintain proper part positioning throughout the process while supporting consistent and repeatable forming results.

For many applications, the pressure pad serves as more than just a hold-down device. It can be used to verify part presence, validate assembly stack-up conditions, compress internal components, and maintain part contact throughout the forming operation.

Because the pressure pad is integrated through the spindle, it applies force directly through the center of the workpiece without interfering with the roller forming process. This allows clamping and forming to occur simultaneously while maintaining full access to the part geometry.

The Thru-Spindle Pressure Pad has become a critical feature on many Orbitform roller forming applications and remains a key differentiator of the platform. Learn more about this technology in our article, Industry-Exclusive Thru-Spindle Pressure Pad.

Higher Forming Capacity Than Anticipated

While improved control and flexibility were the primary objectives during development, testing revealed an additional advantage: significantly greater forming capacity than originally anticipated.

The Servo Articulating Roller Head is capable of delivering up to 9,000 pounds of total articulating force, expanding the range of materials and applications that can be considered for roller forming.

This increased capacity creates opportunities to process higher-strength materials and thicker wall sections that may have previously exceeded the capabilities of traditional pneumatic articulating roller forming equipment.

Application Spotlight: Replacing a Secondary Machining Operation

One application evaluated during development involved forming a groove in a 0.065-inch-thick stainless steel tube.

The manufacturer already utilized articulating roller forming equipment for similar products, but the stainless steel version required the groove to be machined after the tube-end flaring operation. The force available from their existing pneumatic equipment was insufficient to reliably form the groove in the harder material.

As demand for the stainless steel configuration increased, the customer sought a way to eliminate the secondary machining operation and perform both processes on a single machine.

Using the Servo Articulating Roller Head, Orbitform successfully formed the groove in the stainless steel component, demonstrating how the combination of increased forming capacity and programmable control can expand the range of applications suitable for roller forming.

Designed for Process Control

In addition to programmable motion and integrated process validation features, the Servo Articulating Roller Head allows manufacturers to form to a defined, programmable position.

For applications where consistency and repeatability are critical, this provides greater control over the final formed result and can reduce reliance on post-process verification.

Combined with servo control of the spindle, thrust, and articulation axes, manufacturers gain a highly controllable forming process capable of producing consistent results across demanding applications.

Is Servo Articulating Roller Forming Right for Your Application?

The Servo Articulating Roller Head is not intended to replace traditional pneumatic articulating roller forming. Many applications continue to be well-suited for pneumatic systems.

However, manufacturers may benefit from servo control when:

• Forming higher-strength materials

• Additional force capacity is required

• Process repeatability is critical

• Multiple forming stages are desired within a single cycle

• Complex geometries require programmable tool paths

• Secondary operations may be eliminated through roller forming

As product designs continue to evolve, manufacturers need forming technologies that offer greater flexibility without sacrificing consistency. The Servo Articulating Roller Head expands what is possible with articulating roller forming while maintaining the advantages that have made the process a proven manufacturing solution for decades.

If you're evaluating a new application, Orbitform's Solutions Lab can help determine whether servo articulating roller forming is the right solution for your part and process requirements. Contact us today.