CORNER FORMER

Say goodbye to Welding, Grinding, and Finishing! 

ERSM’s Corner Former streamlines your production process, eliminating these traditional steps and significantly cutting costs. 

Improve efficiency and deliver high-quality results faster with this innovative, time-saving solution.

Corner Forming Made Easy: One-Step Forming with No Welding Required!

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With the ERSM Corner Former, clean and sharp corners are formed with ease.
In just three simple steps — flaring, forming, and trimming — high-quality corners can be produced directly on the press brake in minutes, eliminating welding, grinding, and time-consuming finishing operations.

The machine frame features an all-steel welded structure with a fully stress-relieved worktable to prevent deformation. Machined in a single setup on a large five-axis machining center, the worktable delivers excellent geometric accuracy, ensuring long-term stability and high precision.

For large sheet metal parts, an adjustable front support table is available. Its telescopic design allows easy adjustment to match different workpiece sizes.

The entire machine is driven by a servo pump control system, reducing energy consumption and hydraulic oil usage. Servo control enables precise adjustment of the die gap, delivering efficient, stable, and energy-saving corner former.

Key Advantages for Corner Former

Lightning-fast Forming

Complete a full R-corner in a three-step, one-cycle process — massive throughput gains for batch production.

Eliminates Welding & Grinding

One-time forming produces paint-ready, clean corners so you can remove welding and grinding from your workflow.

One-step Form + Integrated Scrap Cut

Forming and scrap removal happen in one cycle with precision dies, guaranteeing consistent R-radius and minimal rework.

Built-in Operator Protection

Integrated safety light curtain and pneumatic interlocks instantly halt the machine if the work envelope is breached, keeping staff safe.

Fast Die Change & Low Running Cost

Modular die mounting and servo/energy-efficient controls enable one-person tooling swaps and reduced energy and maintenance expenses.

Corner Forming Tooling & Safety System

Square Lower Die
Square Lower Die

The square die serves as the lower (internal) die. Its design is simple, enabling very fast and easy die changes. Manufactured with high hardness and uniform heat treatment, it resists deformation and wear, offers excellent toughness, and delivers long service life. One block die can be customized with four corner-angle configurations to form four different sheet-metal corner types.

Rolling Die
Roller Die
The roller die functions as the upper die and is quenched and precision-ground. All critical machining dimensions are held to tight tolerances to ensure optimal processing results. Using high-precision, heat-treated roller dies reduces error-induced rejects and significantly extends tooling life. Both sides of the die are supported by a linkage structure that allows the die to be pulled out for fast, convenient die replacement.
V-Shaped Cutter
V-Shaped Cutter
Two shear dies are included as standard. Manufactured from white-steel (high-hardness tool steel) blades, they are mounted above the roller die and are used for removing excess material.
die holder
Die Holder
The die holder serves as a universal tool in the corner forming system, providing stable positioning and support for the workpiece throughout the forming process.
safety light curtain
Safety Light Curtain

The ERSM Corner Former is equipped with a complete safety system, featuring a pneumatically controlled safety door combined with a safety light curtain. Any interruption of the light curtain instantly stops the machine, ensuring effective operator protection during corner forming.

Corner Forming Machine Processing Technical Parameters

Common Processing MaterialsSheet Thickness (mm)Forming Edge Height (mm)Forming R Angle
Cold-rolled Sheet / Galvanized Sheet / Electrolytic Sheet0.810~12R2~R60
1.010~15R2~R60
1.210~20R2~R60
1.410~25R2~R60
1.510~25R2~R60
1.810~30R2~R60
2.010~30R2~R60
2.310~35R2~R60
Aluminum Sheet0.810~12R2~R60
1.010~15R2~R60
1.210~20R2~R60
1.510~25R2~R60
1.810~30R2~R60
2.010~30R2~R60
Stainless Steel (Grade 304 and Above)0.810~12R2~R60
1.010~15R2~R60
1.210~20R2~R60
1.510~25R2~R60
1.810~25R2~R60

Please note that hot-rolled steel is more difficult to form than carbon steel, and you will need to send a sample for testing.

Furthermore, the minimum size of our processed parts is 200 mm x 200 mm, and the maximum size is 6000 mm x 6000 mm.

Clean, Precise Corner Forming — Made Simple

Still Welding Cabinets?

Change your production process with Servo Corner Forming — look how ERSM forms clean, precise corners directly from flat sheet metal.

By combining pre-bending, corner forming, and scrap trimming into one streamlined process, ERSM replaces traditional R-corner-based methods and is already widely applied in electrical enclosures, cover panels, aluminum curtain walls, and the refrigeration industry.

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Streamlining pallet and door production with the ERSM corner forming machine is so convenient!

Comparison of Processes

Traditional Technology

Bending

1.Bending

Splicing

2.Splicing

Welding

3.Welding

Polishing

4.Polishing

Plate processing completed

5.Finish

corner Forming Technology

Pre-bending

1.Pre-Bending

corner Forming Technology - Corner Forming

2.Corner Forming

corner Forming Technology-Processing completed

3. Finish

Forming process - 3D demonstration

Frequently Asked Questions

The total cost to produce 6,000 parts using the Corner Former is $16,350, while the cost with traditional processes is $68,250. Compared to traditional methods, the Corner Former can save up to $51,900, significantly reducing production costs.

A Corner Former is a machine designed to quickly form the corners of metal sheets, integrating flaring, forming, and cropping into a single operation. Unlike traditional welding and grinding processes, the Corner Former produces smooth, aesthetically pleasing corners without the need for welding, greatly improving production efficiency and reducing post-processing steps.

The Corner Former eliminates several time-consuming steps traditionally required for corner production. These include:

  1. Welding – No need to weld the corner joints.
  2. Grinding – Avoid additional grinding to smooth out welded areas.
  3. Finishing – Reduces the need for surface finishing or polishing.

By removing these steps, the Corner Former streamlines the process, reduces labor costs, and delivers clean, finished corners in one setup.

The Corner Former is ideal for customers in industries that require clean, high-quality corner production with minimal post-processing. These include:

  • Metal Fabrication Shops – For producing sheet metal enclosures, trays, and boxes efficiently.
  • Appliance Manufacturers – For refrigerator panels, washing machine bodies, and other metal components.
  • Automotive Industry – For forming vehicle panels, parts, and structural components.
  • HVAC Manufacturers – For producing ductwork, air handling units, and custom ventilation panels.
  • Construction and Architecture – For building facades, metal doors, windows, and decorative panels.
    Electrical Cabinet
  • Manufacturers – For forming corners of cabinets and control panel housings.

Applications of the Corner Former:

Forming corners for sheet metal boxes, trays, and panels.
Producing doors and enclosures with smooth, finished corners.
Replacing traditional processes like welding, grinding, and finishing for a more efficient and cost-effective solution.
The Corner Former is perfect for manufacturers seeking to enhance production efficiency, reduce labor costs, and improve product quality.

Cornering Technology News

Why Should You Choose a Corner Forming Machine?

Corner Forming vs. Traditional Processes: Efficient Corner Forming Technology

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