CNC Punching Services for Custom Sheet Metal Fabrication
Triangle Sheet Metal Fabrication offers high-speed CNC punching solutions for precise, scratch-free processing of stainless steel, aluminum, and mild steel parts. Ideal for enclosures, panels, and small-batch OEM components.
What Is CNC Punching?
CNC punching is a computer-controlled sheet metal processing method that uses programmable punch presses to precision sheet metal punching results, creating accurate holes, cutouts, and formed features in metal sheets. This process enables fast, repeatable production while maintaining tight tolerances and consistent quality.
For a general technical overview of the punching process, you can refer to this explanation.
We supports punching, tapping, embossing, engraving, and deburring within a single setup, making it ideal for manufacturing perforated panels, ventilation components, electrical enclosures, and custom parts for OEM projects. It is especially well-suited for designs that require high accuracy, clean edges, and efficient batch production.
CNC Punching Capabilities And Technical Specs
At Triangle Sheet Metal Fabrication, our services are designed to support a wide range of custom sheet metal punching parts, from simple hole patterns to complex multi-feature components. We focus on stable accuracy, clean edge quality, and efficient production for both prototype and batch orders.
By selecting suitable tooling and processing parameters based on material type and part design, we ensure consistent results across different projects. Our operations can be combined with
laser cutting, bending, and welding to provide complete in-house manufacturing solutions.
CNC Punching Capability Overview
| Specification | Capability |
|---|---|
| Precision & Tolerances | CNC punching, forming, tapping, embossing, light engraving, deburring |
| Supported Materials | Stainless steel, aluminum, carbon steel |
| Typical Thickness Range | 0.8 mm – 6.0 mm |
| Part Types | Panels, brackets, covers, plates, chassis, enclosures |
| Accuracy Level | High-precision positioning and repeatability |
| Production Volume | Accepted Drawing Formats |
| Edge Quality | Clean edges, minimal burrs |
| Secondary Processes | Bending, welding, surface finishing, assembly |
Why Choose Our CNC Punching Services
At Triangle Sheet Metal Fabrication, our punching services are built around stable quality, tight punching tolerances, and process reliability for industrial and OEM sheet metal projects. We combine automated equipment with experienced operators to achieve accurate hole positioning, clean edges, and repeatable results across different production volumes.
Our workshop is equipped with multiple types of punching machines, allowing us to select suitable equipment based on part thickness, material type, and production quantity.
CNC & Punching Equipment in Our Facility
Automated CNC Punching with Salvagnini S4
To improve punching accuracy, production stability, and efficiency for repeat orders, Triangle Sheet Metal Fabrication operates an automated Salvagnini S4 punching and shearing system. This system integrates sheet positioning, punching, forming, and part separation into a continuous workflow, significantly reducing manual handling during the punching process.
Compared with conventional standalone punching machines, the automated punching system allows consistent hole positioning, clean cut edges, and stable dimensional control across different batches. It is especially suitable for parts with dense hole patterns, repetitive features, and projects requiring high consistency over medium to high production volumes.
By combining automated sheet handling with programmable punching sequences, the Salvagnini S4 helps minimize setup variation and surface damage during processing. This allows us to maintain good surface condition while achieving reliable punching accuracy for stainless steel, aluminum, and carbon steel sheet metal parts.
Fully automatic CNC punching machine
- Press capacity: 20 tons
- Positioning accuracy: ±0.1 mm
- Supports punching, forming, tapping, curling, embossing, and deburring
- Designed for scratch-reduced surface processing
Mechanical punching machines (multiple units)
- Press capacity range: 20–100 tons
- Suitable for high-volume production and general forming
Hydraulic punching press
- Press capacity: 100 tons
- Suitable for thicker materials and special forming requirements
- Pressure: 20 tons - Processing Accuracy: 0.1mm - Processing Speed: 800 times/min(Calculated on 1mm thickness)
- Pressure: 20-100 tons
- Pressure: 100 tons
High-precision punching equipment used for custom sheet metal parts and enclosure components.
Our fully automatic CNC punching machine supports high-speed and stable production of custom sheet metal parts, helping us achieve accurate hole positioning, clean edges, and consistent part quality. The machine integrates multiple operations such as punching, forming, tapping, embossing, marking, engraving, and deburring within one setup, improving efficiency while reducing handling steps.
For parts with surface appearance requirements, the punching process is designed to minimize scratches and surface damage. The combination of controlled punching motion and suitable tooling helps maintain a good surface condition, which can reduce the need for additional finishing in many applications.
In addition to CNC punching equipment, we also use hydraulic punching press machines for certain forming and punching tasks. These machines apply controlled hydraulic force to cut or form metal sheets and are suitable for processing thicker materials or special forming features.
Our hydraulic punching presses can handle a wide range of materials, including steel, aluminum, brass, and copper, allowing us to support diverse custom sheet metal projects.
For projects requiring multiple fabrication processes, please also see our sheet metal fabrication services.
Applications of CNC Punching for Sheet Metal Parts
Our CNC punching services are widely used to manufacture a variety of custom sheet metal parts across industrial and OEM applications, including:
- Ventilation louvers and perforated panels for server racks and cabinets
- Control panels and electrical enclosures in stainless steel or carbon steel
- Cabinet doors, covers, brackets, and mounting plates
- Decorative faceplates and front panels
- Chassis components for machinery and equipment
- Small to medium batch OEM parts for industrial and electrical products
Many of these parts are later assembled through our sheet metal assembly service.
Frequently Asked Questions
CNC punching is typically suitable for sheet metal thicknesses from around 0.8 mm to 6.0 mm. For thicker materials or special forming features, we may recommend hydraulic punching or alternative processes.
Unsure if your part is feasible for CNC Punching?
Upload your drawing and our engineers will review it for manufacturability — free of charge.
Not sure if CNC Punching is the right process?
Compare CNC Punching with other sheet metal processes and understand when it’s the best choice for your project.