レーザーチューブ切断

In laser tube cutting, a high-intensity beam generated by fiber or CO₂ sources, is directed to slice through tubes of various shapes, including round, square, and custom profiles. The process is highly automated, driven by CAD/CAM software, which ensures each cut follows exact specifications.

Design & Programming

The process begins with a digital design file, typically in DXF or STEP format. The file is loaded into CNC software, which converts the design into exact cutting commands. Engineers can include complex hole patterns, miters, or engraving directly into the plan.

Tube Loading and Positioning

Tubes are placed into an automated loading system that aligns and secures them. Advanced machines can handle diameters ranging from 12 mm to over 200 mm, accommodating various industrial applications.

Cutting and Shaping

A high-powered laser, often exceeding 3,000 watts, focuses its beam onto the material surface, melting or vaporizing the metal instantly. Assist gases such as nitrogen or oxygen help remove molten material and prevent oxidation, ensuring a clean, burr-free edge.

Complex Features in One Pass

One of the biggest advantages is the ability to cut complex geometries such as slots, angled cuts, and intricate patterns in a single operation, eliminating the need for secondary machining.

Quality Inspection

After cutting, each tube is inspected for dimensional accuracy and surface finish. Automated measurement systems can achieve tolerances as tight as ±0.1 mm, making the process ideal for industries like aerospace, automotive, and medical manufacturing.

What Are The Challenges in Laser Tube Cutting?

Laser tube cutting is a powerful manufacturing method, it comes with its own set of challenges that must be managed to ensure consistent results. 

Material Reflectivity

Metals such as copper, brass, and some aluminum alloys can reflect the laser beam back toward the cutting head, potentially damaging optics. Using fiber lasers, specialized coatings, or surface treatments can help minimize reflectivity and improve cutting performance.

Heat-Induced Distortion

During cutting, thin-walled tubes can easily deform due to heat exposure. Excessive thermal input can cause deformation, affecting accuracy and fit. Adjusting power levels, cutting speeds, and assisting gas flow is essential to maintain dimensional stability.

Complex Programming Requirements

Intricate geometries require precise CNC programming to ensure clean, accurate cuts. Poorly optimized cutting paths can waste material, increase cycle times, and result in part misalignment. Skilled programming ensures efficiency and quality.

Ongoing Maintenance Needs

Laser tube cutting machines rely on clean optics, properly aligned nozzles, and reliable gas delivery. Neglecting maintenance can lead to reduced cut quality, costly downtime, and shortened equipment lifespan.

Thickness Limitations

Most laser tube cutting systems handle wall thicknesses up to 10–12 mm efficiently. Cutting thicker materials can slow production and may require multiple passes, increasing both cycle time and operating costs.